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good morning everyone so before I begin I want to take a moment to say thank you to Mike Parsons and everyone at is on his team at about me direct for organizing this webinar today and I'd also like to take this opportunity to introduce a new company by a battement direct called dent ology you obviously abutment direct sells a lot more than just abutments now they've got 3d printers resins zirconia birds alloys you name it so they wanted a name to reflect that moving forward all non implant components will now be sold by dent ology as you saw from the animation there the name is a portmanteau of the words dental and technology which i think is very fitting and clever so thank you to the team at dent ology for putting on this present to the presentation today so what we're going to be presenting today is an introduction to 3d printing so we're going to start with the absolute fundamentals and go from there to help you build a better understanding of 3d printing and how it relates to the dental field just a bit of housekeeping before the presentation this is a webinar format presentation today so that means video and audio for attendees is disabled and chat functionality has been turned off as well I'll be taking questions through the Q&A feature that you can find at the bottom of your screen and I'll try my best to address those questions at the end of the presentation so once again thank you for joining us today and let's get started so a little bit about myself I'm a second-generation dental technician and in my spare time I run a blog called dental tech tips where we focus on tips tricks and all the latest and greatest in the dental industry and if you'd like to connect with me online or through social media you can find me in all the usual places with the username at dental tech tips so the first question we need to ask of course is what is 3d printing well let's take a step backwards and look at traditional two-dimensional printing everyone knows what this is I hope it's a regular paper printer that you connect to your computer and I sincerely hope that everyone knows how it works but just in case you don't you have either a document or a photo on your computer that sent that sent to your printer and it uses either ink or toner to produce a letter or photograph so this printer by depositing ink or toner in a flat two-dimensional layer and and the end result is a physical real-world representation on paper of what you had created on your computer now suppose for a minute that I printed a pattern on multiple sheets of paper I cut that pattern out with some scissors and stacked them on top of each other with some glue eventually I'd start seeing some vertical dimension in my stack of papers and if I was talented enough the result could look something like this so what you're seeing here is a paper sculpture made to look like a marble statue by an artist named Li Hongbo super neat and I'd probably recommend that you check out his work if you've never seen it before but getting back to my point if you stacked enough sheets of paper on top of each other you've started building a three-dimensional object and at its most fundamental core 3d printing works on this exact principle so once again you have either a digital impression or restoration that you've designed on your computer and the 3d printer uses filament or resin to produce a real physical dental restoration or appliance digital models are simply transformed into real physical objects one layer at a time until you have a physical real-world three-dimensional representation of what you had created on your computer so a brief history of 3d printing when it was introduced back in the 1980s it was referred to as a rapid prototyping before 3d printing if you wanted a prototype you would need to design your parts on a linear CAD program send those CAD designs off to a machine shop for tooling to create molds for injection molded plastic and then about two to three months the shop would send you a rough prototype from the mold that hadn't been polished yet and things more than likely wouldn't fit together but it would give you an idea of what you'd be working with rapid prototyping changed the game completely because parts could be fabricated on demand and pretty much exactly to specification nowadays the uses for 3d printing has become far more diverse of course hobbyists Education Research manufacturing and of course in my opinion the most important dental 3d printing wouldn't be possible without the advent of digital dentistry digital is kind of a buzzword for any kind of new and exciting technology in dentistry but at its core the invention of tech had camps used in dentistry and the use of digital computer control technologies versus simple mechanical or electrical tools has been absolutely revolutionary digital manufacturing pathways and dentistry can be broadly classified in two categories additive and subtractive a subtractive manufacturing process involves an object that is larger than the desired end product and excess is removed from it like a sculptor chipping away at a block of marble an additive manufacturing process will be like our friendly earlier who takes the raw material and binds it together to make his paper statues when you think of subtractive manufacturing in dentistry milling of course is what comes to mind we're not gonna go into too much detail it's a segment or industry that's matured quite a bit when I first started my career about 15 years ago every single trade show you went to and every single booth had a milling machine and every company was selling their own brand of zirconia at Siemens and it's still the most reliable way to produce digital restorations but there are limitations with milling you have to consider your tool geometry and factor in to your process so there are limitations to what your designs can look like things like undercuts blank height positioning are a few things that are drawbacks or ability the new kid on the block is of course printing and now if we ever get back to doing trade shows pretty much every single booth would have a printer and every company is selling their own brand of resins so we're at the point where milling was 10 to 15 years ago and it's kind of interesting to see and observe the parallels that are happening here with printing many of the limitations of subtractive manufacturing there's all you no longer have to consider your tool geometry and undercuts are no longer a problem that's not to say that printing is superior to milling it has its own drawbacks as a little you do need to support your prints appropriately for them to print successfully and your print sizes are instead limited by the actual physical limitations of your specific printer finally 3d printing doesn't scale very well so it's not the most cost-effective production method in certain industries that employ mass manufacturing once you get past the 100 unit mark and economies of scale start to kick in the cost per unit of 3d printed parts don't go down very much when compared to more profitable methods like injection molding or CNC machining the exception of course comes when dealing with masks customized devices things like hearing aids and of course anything and everything in dentistry 3d printing excels when it comes to mass customization that's why dentistry and 3d printing go hand in hand so let's get acquainted with some of the basic terms and concepts that we normally use in 3d printing I've been using the word dimension a lot in the past few slides so let's discuss this term what we're talking about when we say dimension is we're referring to an object's length width and height a drawing on a paper has two dimensions length and width but it essentially has no depth or height a 3d printed object has a length a width and height and it's three-dimensional and these dimensions are represented in virtual space by the letters x y and z and i've prepared this simple animation demonstrating the three axes and how they relate to a 3d object in this case a dental model the z axis refers to the height or depth of the model the x axis its length and the y axis its width I know you must feel like you're back in 10th grade geometry bored out of your mind but we have to ask why are dimensions important important to us in dental 3d printing well let's forget about 10th grade geometry for a moment and go back to elementary school art class instead and let's look at tracing paper and connect the dots I'm sure a lot of you have used one of these at some point in your life or no you have kids and they're using it well how does this relate to 3d printing if we go back to our X Y Z 3 shape model here every single point on this model has a coordinate for example we get my talk around here real quick for example this point here on the cusp of karabell II may have an x value of 52 a y value of 49 and a z value of 32 and this buccal cusp year on the third molar may have a coordinate of X negative 128 Y negative 256 and Z of negative 5/12 but the idea is that every single point no matter where it is on this model has a specific coordinate in 3d space so the software interprets this data and it goes through peak slice by slice and it determines and figures out what each of these coordinates are so exactly like our friend Pikachu over here whose ear whose left ear consists of numbers 44 through 53 the software will slice through each of those layers of a 3d object and tell their printer where it should be connecting and where those dots are tracing and this software is quite conveniently called a slicer so you can import your 3d files in add supports for printing and then mess them onto a virtual build platform once you've done all that the software it translates that information in to individual layers or slices and sends it to a 3d printer in a language that it understands called G code but before we get ahead of ourselves let's discuss a little bit more about some of the concepts we just introduced here like 3d file formats generating supports and the build platform so for file formats the most common one you'll find in dental 3d printing is the STL file in a nutshell an STL file stores information about 3d models the objects are made up of thousands or even millions of tiny little triangles called facets the slicing software analyzes the coordinate data of each facet to determine what each individual layer will look like the STL file format has been adopted and supported as the de-facto 3d printing standard for the dental industry and the printing industry as a whole now moving on to the supports they are a type of removable scaffolding that helps to ensure a successful print once you are finished printing you would normally remove the supports from your 3d printed part when generating supports flow needs to be considered so what I'm referring to when I say flow is you need to imagine how the part being is being supported from one layer to the next if a part is simply floating in mid-air without any contact with a build plate that area is likely to result in print failure accounting for things like overhang and unsupported area is absolutely critical for ensuring a successful print so that's easy you say what if I just load up with a bunch of extra support so we don't get any failure that will work of course but we also need to strike a balance between how many supports we actually need we too many supporters will affect the final surface finish of your 3d printed part if your supports are too dense you can be what wasting excess resin which could get expensive in the long run it also requires more time to manually finish and smooth the rough surfaces left by the supports so definitely something to keep in mind is to try and find a happy medium when generating supports and the build platform is where all your 3d printed parts will attach to during the printing process the build platform in most 3d printers will move up or down as each consecutive layer is printed depending on the printing technology the sides of the build platform do vary quite a bit because of this if your build platform is too small it could really limit the productivity and capacity of a given printer something very important to consider when shopping for a printer usually when the build platform acts as the build platform acts as a z-axis and moves up or down as each layer is printed the technologies and how this is achieved can vary quite a bit and they all have advantages and disadvantages when compared to one another so let's discuss that a little bit now the three main types of materials that you can print with can be broadly classified into three categories filament resin and powder the technologies you use to print them are FDM so like a filament photo polymerization or resins and then finally laser melting so f DM or FFF sometimes you'll see a stands for fused deposition modeling or fused filament fabrication yeah they're identical the technologies are identical the terminology difference is only down to a trademark dispute pretty much so yes FDM ffff are the same and this is what you'll find in your hobbyist type printers where you have a plastic filament and it gets heated up and deposited into the desired shapes so very limited use in dental 3d printing specifically but it's currently the only way that you can print out blast actually so that's FD I'm Corey traditional SLA uses a single laser and some mirrors mounted on motors that rotate and draw everything out it's a very slow process because the printer is essentially drawing everything out on each layer DLP is a projector that does the exposing rather than the laser in contrast to SLA so a free in for example SLA would be like drawing something out with a pencil or as DLP could be like u2 if you had a stamp and projected an entire image on to the build platform all at once so remember how we mentioned in the previous slide about build platform size being limited by the printing technology well typically what you'll find is that DLP build platforms are much smaller than their SLA counterparts and the reason for that is because lasers can maintain a better fidelity over long distances because they're essentially a single point DLP on the other hand because it is a projected image the further out you project an image the fuzzier it tends to get at the edges so in order to counteract this drawback DLP printer manufacturers typically keep their build platforms relatively small in comparison to SLA in order to maintain a higher resolution and accuracy the next technology it would be Jenny so Jenny also uses resin but the way that it's employed is very much like a desktop jet printer where resin is injected through nozzles this is a very neat technology because it allows for variable materials in one single print so you can get multiple colors or multiple different types of materials so your solids could be one thing and you could jet your supports and something that's easily dissolvable by alcohol which then kind of eliminates your surface crypt finish issues if you were printing with regular supports and then finally we have SLM or powder fusion also called laser melting you essentially have a powdered metal and a laser very much like SLA and it melts or centers the powdered metal together to produce metal parts and typically you'll find these machines in large outsourcing facilities an excellent way to still offer metal restorations if you're anything like me and absolutely terrified of casting PSM is using an acetylene torch and a broken on casting machine so of course the two most popular technologies are SLA and DLP so here a couple videos illustrating how those two technologies work so all of the vat photopolymer resin based printing technologies are a form of stereo lithography although manufacturers and companies will tell you that these technologies are extremely different and one may be better than the other they are at their core all based on the original stereo lithography process that was invented in 1983 by chuck hall they all use a source of light and cure a photosensitive resin in order to produce a 3d object single laser SLA is self explanatory DLP instead uses a projector msla uses either LEDs or LCDs as the light sources and in the end they all produce a three-dimensional object now let's talk about the basic parts of a VAT photo polymer 3d printer no matter if you have a laser SLA DLP LCD or a non-contact DLP printer these are the basic building blocks that make up a resin printer you have your UV protective cover something to filter out the UV light so that the resin doesn't accidentally here these are photosensitive materials that we're working with so overhead lights natural daylight anything that emits UV radiation will cure your ism the next thing you'll need is a light source or light engine so either a laser or projector usually then you have your build platform which we had discussed previously and this is where all your parts will adhere to and finally you have your resin bed it can also be called the build tray a resin tank a reservoir tank a resin tray etc etc the resin VAT is a container with an optically clear bottom and it holds a certain volume of resin so that your build platform can rage in and out of it the bottom of the resin that on traditional DLP printers consists of a flexible membrane the reason for this is the resin is partially cured during the exposure and the flexible membrane is then it's peeled off of that flexible membrane by the build platform because this membrane experiences a lot of wear and tear as a result of literal tearing of the 3d printed parts off of it the resin that and most printers is considered a consumable item and it needs to be replaced pretty regularly once it's reached the end of its life expectancy some printers like a Saiga have built-in sensors that will track how many builds and how much resin volume has been processed by your resin tray and will automatically notify you that it's time to replace your resin tray soon you can typically choose to ignore this but before warned that if it does fail you can have resin leak all over your optical window or even worse cause damage to your actual light source or other internal printer components I've also included an animation that demonstrates the peeling process that we just described so of course we also need to mention a technology called non-contact DLP the most popular of course is clip from carbon non-contact DLP is essentially this modified DLP process in traditional SLA and DLP systems the layers are glued onto the resin tank and need to be peeled off of the base whereas non-contact DLP has the print suspended in the middle of the resin and it's pulled out of the VAT which reduces shearing forces decreases print times and potentially leads to more accurate prints due to less distortion I have prepared this handy little chart that has some of the most popular 3d printers at different price points that we use in dentistry today you can see the rush price points and printing technology that we've just discussed I've also included some specs on here to help build like build platform size wavelength and XY accuracy so typically when it comes to the sales pitch you hear about wavelengths 385 does this for Oh 405 does that etcetera etcetera but if we look at actual physical wavelengths what we are actually describing is the distance between the waves longer wavelengths carry less energy and shorter waves carry more energy and result in faster deeper cures 385 achieves more detailed because the waves are physically smaller and the range of reactivity is much narrower than visible light at 4:05 which can scatter and from a range of 400 to 410 resulting in overexposure 405 nanometers light engines are also more cost effective and easier to source so it makes them a little bit more budget-friendly so as a result you might say hey you know this guy here that's presenting had I see this formlabs here it has a relatively large build platform it's super cheap and this guy's telling me that SLA and DLP are essentially the same so why should I spend more and buy something that's four or five times the price well truth be told you should be looking at the XY accuracy and that's why I included in this presentation so the remember all that dimension talk were mentioning earlier XY resolution is a true indicator of accuracy so don't look at the Z depth of a printer when shopping around because Z depth is essentially meaningless for accuracy you can achieve better surface finish by decreasing your Z depth from 100 microns down to let's say 25 microns but it doesn't make your prints any more accurate the reason for this is because you think okay well lasers at a point but remember we are sourcing much cheaper light engines for something that's it for the formlabs and so if you point something perpendicular to wall at a 90-degree angle it's a perfect circle right but if you're pointing at like a 45 degree angle or some very steep angles that circle then starts to become a little tickle and it also loses fidelity over long distances so something like the formlabs it's a fantastic hobbyist printer it's revolutionized that the SLA segment and that's why it's so popular but for dental you do really need something that is much much more accurate and finally you'll also see on this chart that we are mentioning open and close systems so what what we mean there is a closed system is exactly like where companies are copying the traditional printer business model of selling you the printer at a loss in hopes of recouping that loss leader by over pricing the ink again and finding parallels from our past mistakes my first milling system we had this rfid barcode reader that you had to scan the disks in and if you didn't have a barcode you couldn't mill it nowadays you can go out by any zirconia blank that you want to buy and then mill it on pretty much any machine that you want so long as it adheres to that 98 millimeter standard and the trend that I'm seeing with printing is fortunately the same open systems allow you to use pretty much any resin with any printer so long as there's a material profile for it and even if there isn't a configuration file if you're savvy enough and you understand how to calculate milliwatts per cubic centimeter you can create your own profiles by applying the appropriate settings to your printer so an open versus closed system should be a big deciding factor for you when choosing a printer now that you're all experts in 3d printer construction and technology let's move on to the fun stuff and find out what we can actually produce with your 3d printers so first up is testable applications when when you produce something like the iPad it bins for pressing or casting so things like veneers metal copings RPD frameworks if you're anything like me and just a mediocre technician when it comes to using your actual hands but you're extremely comfortable with the mouse and keyboard I'd much rather design of any other full crown using a computer and then have it printed so you can achieve more intimate fits compared to let's say milling if you're milling wax especially in those sharp incisal edges where they're usually you need to put burr compensation so printing for especially for things like veneers where you need better fits definitely an excellent option models of course are currently the most popular use for printing in our lab of course crown and bridge models with a removable diet accounts for about 90% of our 3d printing currently but pretty much any type of model that you can pour up in gypsum can be 3d printed so digital implant models with painting double masks diagnostic models removable models for sucked down thermal forms I find that most traditional models for removals are actually poured using alginate or other cheap and accurate impression materials 3d printed models are equally accurate across the board whether it's for crowns or for an ex explint so fabricating the sort of feedback from dentists has been very positive on the improved fit of their removable restorations specifically and then of course we have splints and night guards they're an excellent growth opportunity that 3d printing can introduce to your lab so one of my favorite materials is key sled soft it's a flexible split material that's been absolutely wonderful and the feedback I've gotten from the clinical side has been fantastic you can print it as thin as one and a half millimeters and it's it's has like a memory effect so once you warm it up a little bit it does have a little bit of flexibility so super durable excellent stuff surgical guides are another popular use for 3d printing now a guided implant surgery makes things so simple and predictable for placing implants so typically if I'm doing like an immediate load load case we will perform a virtual tooth extraction design a temporary crown fit over a temp cylinder and produce the surgical guide with the corresponding sleeves so I absolutely love this workflow because the implants are designed from the top down rather than the bottom up so you have perfect screw hole access either lingually on the anteriors or centrally on the occlusal surface right in the middle dead center for posterior crowns and you have a perfectly sculpted emergence profile for the final restoration as well of course the most popular application for digitally printed models in the world by far is for the fabrication of clear liners two-five sorry about that okay so for the fabrication of clear liners and a lot of the pioneering in dental 3d printing can be credited to one company and that's Invisalign they were first company to really go out there and use this technology on a mass scale when they first started in 1997 they would work on traditional stone models and segment the teeth move the teeth slightly and then duplicate the models and then they'd segment the teeth again move them a little bit more duplicate the models and go on and on and on and on average for each case Invisalign produces about 40 models per patient for a comprehensive orthodontic treatment so you can imagine the scope and magnitude of models that Invisalign needs to produce and to this day they are by a wide margin the largest producer of 3d printed parts so not just in dental but the largest general producer of 3d printed parts in the whole world and they're printing an average of about three hundred and twenty-five thousand models per day so just imagine the scale of how massive amount of models that is and then of course we have in direct bonding trays going fog followed up with ortho in direct bonding trays are another amazing way that 3d printing can improve efficiency so depending on your jurisdiction and the laws governing orthodontics if you're an orthodontist and you're legally required to be the one that places the brackets on the patient rather than just taking an hour you can do it in essentially 30 seconds and the same goes for arthel labs that are currently servicing these orthodontist and fabricating these interactive bonding trays using traditional methods so rather than sitting there at your bench marking up the model figuring out the ideal centric position for the tooth duplicating the models and this process could take up to four hours you can let the computer do the hard work of planning the bracket placement sit back while your printer prints it out in about less than thirty minutes and finally the hottest topic in dental technology today of course is digital dentures 3d printed digital jurors are going to completely revolutionize the way we will be making dentures going forward development on the software hardware side along with the materials has reached a point of mass market adoption 3d printing dentures is more efficient more consistent and it's a scalable process for example a proficient denture technician would typically set aside about two and a half hours to complete a denture setup and if they need to reset the denture teeth it can take anywhere between a half an hour to 45 minutes with digital design in a program like three shape this process of resetting teeth takes no more than 10-15 minutes maximum these teeth are already programmed in perfect bilateral balanced occlusion so pretty much it's essentially a clickable button then of course you send it to your printer you can send it and do a monoblock Tryon while you're setting up another denture once you've printed out your parts you still need to clean and post-prom assess them so let's discuss that a little bit now parts should stand or higher purity I use 99% for pretty much everything sourcing that nowadays maybe a little bit of an issue but now we'll see once we get back to whatever our new normal is your first stage is a dirty bath for removing large amounts of resin and your second stage is a clean bath to ensure that your part is at clean as possible prior to carry my dirty bath that I use is a formlabs form wash with an agitator it's an excellent cleaning unit that holds a large volume of alcohol and has some automated features the clean bath is a small jewelry ultrasonic unit and so what I do is I'll wash in each bath two to three minutes in dirt three baths two to three minutes in the clean bath depending on what the material specifications and the instructions for use are and typically you try not to exceed more than four to six minutes of total Washington because the alcohol will begin to degrade your prints over an extended period of time which could affect accuracy denatured alcohol and ethanol sometimes easier to find and is cheaper these forms of alcohol infiltrate and affect the chemical properties and strength and accuracy of the parts I've also heard the use of TPM which stands for try coupling glycol mono methyl ether which is something else you could use for washing but I haven't heard anything from a manufacturer and I typically like to wait until you have official recommendations before using it so I once again these chemicals infiltrate and they affect the chemical properties and strength of your prints which can result and reduce strength or an incomplete cure and bearing in mind that you need to be fully cured for some of these materials to be considered biocompatible you want to really tread lightly in compromising integrity of a material when using other forms of alcohol besides IPA once you've completed your washing process you need to dry off the excess moisture with compressed air inspect the model for any glossy areas of residual resin if any area appears shiny then simply repeat the washing process as needed to cure I highly recommend using the auto flash g17 one with grade five or 99.999% pure nitrogen so moving on to curing once again I may start sounding like a broken record but for a biocompatible materials like denture basis and splints post curing is extremely important I'm the biggest proponent of finding the cheapest option that will get the job done for my labs actually has an official guide on the website for using a manicurist UV light box with some aluminum foil to cure your prints but because the materials are biocompatible and all the hassle that was required to get that through the Health Canada approval or FDA whatever it may be you may want to make sure that any residual monomer or binders or additives are completely removed and that everything is a hundred percent fully cured to eliminate the possibility of any cytotoxicity or adverse effects in the patients because they are wearing these appliances long-term so depending on your peering system some use a glycerol bath for the inert hearing environment instead of a nitrogen but the overall technique is the same so what you want to do is you want to place your models flat side down or the part with the most surface area to help prevent warping mm flashes per side so you take it flip it around specifically in the g17 one your curing unit may have a different process of course I use at at minimum they recommend grade two point six four ninety nine point six for optimal results but I use grade five or 99.999% pure nitrogen if you don't have nitrogen or you run out try not to flash consecutively wait a few minutes for the material to cool down and prevent overheating or shrinking or warping the fit and finish of your prints will be significantly affected without an inert environment so trying to keep as much nitrogen or glycerol on hand as you can and then finally of course you want to wait for your parts to cool completely prior to removing them from the curing unit to prevent thermal shock and warping and finally you can pretty much finish your 3d printed parts in the exact same manner you would a traditional process restoration you can grind fit polish it using typically acrylic burgers or some wheels whatever you would normally use and there's some manual adjustments that may be needed to believe under cuts but everything usually goes down pretty quick if you designed it correctly maybe a minute or two is what I use at most and that's including like removing the supports and adjusting so you shouldn't need to play with your prints much and finally I'd fit check and refine the contacts for example on a denture or on the splints and finally punish pumice and polish as needed so finally I just want you want to leave you with a few things like a tips and tricks before we wrap up and move on to QA so some limitations of course with 3d printing and added an additive manufacturing a lot of limitations of million have been solved and all so resins are still in the very early stages of developments 3d printed materials are not nearly as durable or strong as the restorations that have been milled and finally aesthetics and accuracy still have room to grow 3d printed and even or even milled denture teeth still can't compare to like us let's say a six layer cross-linked introduced with printers like let's say via sigue you have accurate enough prints to finally but um and at the tractors price point so it can only get better from here so moving on to some tips and tricks for certain resins is recommended that you mix them and pry one hour prior to printing so agitating and shaking up the material really well and setting it aside for an hour so that we can allow for bubbles to rise ensure a good resin consistency so you have a very nice clean and clear print this isn't for all resins so make sure you check the instructions for use of your specific resins but if you do pour it out and like for example Wilke c.split soft and you notice that there's some bubbles in the resin tray just take a little clean instrument pop those little bubbles to ensure that you're getting a nice homogeneous print keeping the build tray relatively full of resin while printing will help maintain pressure and tension on the membrane which results in an increased likelihood of a successful print so if you're getting print failures sometimes it may just because your resin level is actually too low and also don't leave your printed parts in a printer for more than eight hours even though it has a UV protective cover any stray to be light it does filter out all UV so any straight UV light could cause undesired carry if you're leaving the printer overnight I mean there's no light so turn off the lights inside the lab and that should help as well extending that time a little bit as for nesting and orienting your 3d printed parts you'll have that will significantly affect your print times so it's especially noticeable for laser SLA printers because the prints are happening one layer the time being drawn like I said like a pen like a pencil so if you place an object vertically that increases the layer count eventually when compared to a horizontal orientation what I typically do is I'll run a batch of small jobs all throughout the day printing horizontally of flats the build platform as much as I can and then doing a large vertical print job over for overnight builds for digital implant models what we'll do by what I recommend is inserting the digital analog into the model before curing and the same goes for surgical guides make sure that you're inserting the sleeves before post curing there is a little bit of shrinkage so it might make it too tight where that analog won't be able to fit so with that I think we can move on to the Q&A session that concludes our presentation so let me try and get like my screen back on here hey how's it going dad so a little a little elaboration on the technology essentially buying non implant prosthetics from a company called abutment direct it was kind of weird obviously 50% of our sales are actually non implant related products we're actually the largest 3d printer cell or in Canada now or better you get dental company so we wanted a new brand new need to bring all these non implant prosthetic products under and so we created a name technology so pentalogy has three printers almond Grbac zirconia and different machinery Keystone full line of Keystone including the proform guards milling tools alloy D tax has a bunch of products like the mall sale and all the different resins like Keystone soft splints and D tax a sigue procedure so we've basically taken all these products and put them on this in a new catalogue the new catalogue will be available probably in three weeks basically whenever one's getting back to work we'll have a new catalog for everyone to make things easier the prices will be in the catalogue it'll also include carbines diamond polishers all kinds of different products it's 100 page catalog so yeah so we're basically have it's one company still but two different brands some of the questions and you know if you want to see credits just email Mike at abutment direct calm and and I'll respond with us some people want them some people don't great okay and it looks like we have a question here from Steven read Stephan Stephan Stephan so he says hi I have a form to and a moonray s printing n 95 and 99 masks any recommendations on the best resins to use for this you know what for that I'd say just use the cheapest possible resin that you can possibly find but just something that doesn't smell toxic we really don't know right we're kind of in uncharted territory there but you know something that doesn't off-gas too much stuff that you breathe in all day long because because your your breathing is already restricted with an n95 and then this this one here is from a dentist friend of mine which was teasing me but he says how did you learn so much he's he's my guinea pig so whenever we were testing out like Keith Keith split soft or anything like that I said hey I got this no material I need you to so what we do that this is a great little side way so what we do is if you want to try and get a new material and you're kind of scared when you would do like a regular thermal flex so I fabricate a regular thermal flex and I print one as well so it cost you a little bit more up front but what you do then is you say hey you know what I'm sending you to try it out try the thermal flex and try out the key split okay let me know what you think what which one the patient likes and keep it so you are making doing double to work essentially but that way at least you get a little bit of feedback you can and you can kind of get your feet wet with it I think it's really important when you you have a 3d printer that could print the thermoplastic my cards with the Keystone soft splint immediately print a bunch of them a bunch of samples and give them out to all your dentists so the dentist can see what they look like doesn't necessarily have to go on someone's mouth right away but that you know dentist want to touch the nightguard to see what it looks like see how it feels run it under hot water when they get that experience and see the result then them they're more likely to say hey you know on my next case instead of the impact guard make me a printed guard let's try it out on a patient so you know it costs that the cost to print a night guard or so so low that it's not gonna break the bank and it's a great way to educate your dentist on what products are available and and what the actual proc looks like so I'd recommend a lot of labs do that and their night guard sales go through the roof some labs don't do a lot of night guards they might be doing a dentist crown a bridge but the dentist is saying the night guards is somebody else well this is a great way to get that cost get that dentist to send either night guards by offering a superior product so there's there's different ways to do it but I'd recommend printing a bunch of samples and send them out to all your dentists absolutely and of course if you don't know how to untie shameless plug here but if you don't know how to do any of these things we do offer some fantastic courses all throughout the year on how to do night guards how to do digital dentures models different things like that so get in touch with the team at tent ology in order to sign up to those courses yeah three three printers pretty useless if you don't know how to use it properly so we do monthly webinars with men teaching you how to design night guards how to design denture bases and teeth how to even build models so if you are lacking those those skills get in touch with us and we'll let you know the next date for the for the webinar you're looking for and essentially take your 3d printer and use it fully and get your money's worth because they're not cheap you're looking at with the printer and the curing unit with the with the auto plastering unit with nitrogen you're looking at after tax book twenty thousand dollars so it's not it's not a you know a thousand dollar piece of equipment you put in the corner and hope you use it if you're going to invest that much money you want to use it so we're here to make sure that you actually use it or train how to use it I don't think a lot of companies do that so that's kind of how we've separated ourselves from the pack and through service and training all right well I think we've pretty much answered all the questions if anybody wants to drop another question in their would but other than that I think hopefully hopefully you guys learned something good today yeah you know what I think I think we'll do another free webinar in probably two weeks three weeks just to go over a little more detail on the heceta and and showing you how to nest and showing how printing the you know designing different prints kind of a more advanced course this course was more introductory to three printing and the next one will be kind of level 2 this is what you can do with the 3d printer specifically more of a three shape design and type course so stay tuned for that it'll be another one-hour free webinar just to give you guys some more more free advice the skills to work with so yeah stay cute then don't be the one doing it men I guess I'm doing it that you get to see me again Rick asking about the forum 3b and my thoughts about it so I don't have I have experience with the forum labs forum too and if you've seen any of our past webinars and my testimonial regarding it and not because it's sponsored by a seka but because my personal experience with forum Labs has not been very good and from the anecdotal evidence I've heard online is that the forum 3b is actually slower than the forum - somehow so not very promising I mean they did put a little bit of hype on it when they first started releasing it but I if it was gonna be the next high printer.you you would definitely hear about it there's a reason why they Asik is the most popular selling printer and in all of Canada because I think you have I think if you have the time to fiddle with a 3d printer and you only print you know five pieces a week or five pieces a month then getting a three four thousand dollar printer makes sense it gets you in the game gets your feet wet gets you some experience with 3d printing if you're printing a decent amount of night guards and models surgical guides dentures if you get a low cost cost printer the amount of time you're going to waste on fixing it and figuring it out and reprinting misprints your time is worth money so you know you sure you might go from four or five grand to 20 grand but over the next five years the time you've wasted what is your time work if your time is worth even twenty dollars an hour you're going to get that difference in the next five years so if you do have a decent volume where you're printing 10 plus pieces a month I think the SE is the way to go it's by far the best printer under $40,000 there is the sigue Pro coming out that was just launched we're getting a bunch in we have a nine coming in I think five or six of them are pre-sold so we do have a few left those are more the $33,000 price point so those are your production labs that are doing say 3040 night guards in a week you know 30 40 models in a week where the max is gonna be work work to the bone and the pearl is kind of gonna come in it's got three times the build plate size and it's actually more precise it's gone from the max is 63 microns and we're going you're going to minimize it down to 56 microns so it's actually more precise with a larger build plate fantastic and I'm first on that list right yeah yeah we got three met three shipping next week and you got one of those but then we have another three coming two weeks after that and then the final three about three weeks after that so we have a steady stream of them coming in three all right eat well with that I think we've used up our entire hour so thank you everyone once again for joining us today okay take care guys all righty