I got my 3Dshape scanner, great support , my training with Destany was excellent. Great team!! - 2/15/2024
Yu Gan
Great company. Pioneer in digital dentistry. Armen knows his stuff. Hands down the go to scanner reseller in the US. Support and training courses are incredible. - 10/02/2022
arthur lyford
I cannot say enough about the support I have received from the beginning. I chose CadRay ultimately because of the support reviews...I can attest first hand...they are all right on...though I have been practicing for more than 35 years, this old dog ...read moreI cannot say enough about the support I have received from the beginning. I chose CadRay ultimately because of the support reviews...I can attest first hand...they are all right on...though I have been practicing for more than 35 years, this old dog has been taught a lot of new tricks from the support staff at Cad Ray...Truly impressed with every interaction so far! Thanks 10/4/2023 And they did it again today with ten minutes before the pt came in 3Shpe server would not connect with the computer and Andy got to 3Shape directly and had us up and running...thankfully I didn't have to call anyone but CadRay...thanks again....read less - 10/05/2023
Paul Crespo
Cad-Ray has been instrumental in implementing and supporting our experience with scanning. Having scanned previously with other services I can truly say that Cad-Ray takes their clients very seriously and will not leave you hanging. They set the ba...read moreCad-Ray has been instrumental in implementing and supporting our experience with scanning. Having scanned previously with other services I can truly say that Cad-Ray takes their clients very seriously and will not leave you hanging. They set the bar very high. Cad-Ray all the way!read less - 12/09/2021
Cole Smith
These guys are great. My favorite part about them is they set you up for success with your products. A lot of dental companies will be happy to sell you big ticket tech item but don't have much to set you up for success. I bought the Medit i500 and t...read moreThese guys are great. My favorite part about them is they set you up for success with your products. A lot of dental companies will be happy to sell you big ticket tech item but don't have much to set you up for success. I bought the Medit i500 and they have tons of videos on how to get it working and working well for you in your office. If you need a much of hand holding they have that our if you are like me and like the do it yourself videos they have that. I am sure you can buy these products all over but it is there service that sets them apart. If to are looking to buy some dental tech use these guys!read less - 6/05/2020
Robert Mabry
I don't scan in my practice my assist does. She says it's awesome. Better than the trios or cerecs we have had in the past. The image quality while designing cases is amazing. Haven't seated a restoration from it yet but expect it to be great as well...read moreI don't scan in my practice my assist does. She says it's awesome. Better than the trios or cerecs we have had in the past. The image quality while designing cases is amazing. Haven't seated a restoration from it yet but expect it to be great as well.read less - 6/16/2020
I love my medit i-500. Cad-Ray has wonderful customer support, I can not imagine getting a scanner from anyone else. Armen and Frank are great! Thanks again. Will recommend cad-ray to all my friends. - 6/16/2020
Ryan Buckwalter
Couldn't have had a better experience. The training was excellent, and they've been great to work with. I recently had an issue that required a warranty claim. The process was super easy, and completely hassle free. In fact, I'm still in shock at...read moreCouldn't have had a better experience. The training was excellent, and they've been great to work with. I recently had an issue that required a warranty claim. The process was super easy, and completely hassle free. In fact, I'm still in shock at how great they were about the whole thing. I would (and do) highly recommend this company.read less - 2/09/2021
Luciana Bretz-Pavie
Wayne Glassoff is the go-to guy here! The BEST!!! He is always on it, he helps figuring out exactly what you need, the best way possible. And fast! Great working with CAD-Ray, they have pretty much everything when it comes to digital dentistry. And t...read moreWayne Glassoff is the go-to guy here! The BEST!!! He is always on it, he helps figuring out exactly what you need, the best way possible. And fast! Great working with CAD-Ray, they have pretty much everything when it comes to digital dentistry. And they give you a damn good support too. Jessica Knott is awesome… training and support, just the BEST! Very satisfied customer here!read less - 2/05/2023
Daniel Kim
CAD-Ray's online resources and customer support has made my Medit scanner implementation possible without the need for any hands on training. They are full of resources and have expert knowledge. - 7/01/2021
Shahnam Shifteh
I just ordered my i700 and am
Very excited to get into the digital world of dentistry and Nick was extremely helpful with answering any questions and helping to put the order together. - 12/09/2021
Thank you guys so much. You guys have the absolute best customer service! - 5/05/2025
Cody Boseman
Cad-ray has been amazing, not to mention they have an amazing product in the medit i500. Their training is great, customer service is quick and thorough, and follow up is consistent. I highly recommend using cad-ray for anything that you may need. - 6/19/2020
Scot White
It's rare to find a company that actually has its customer's best interests in mind. They took all the intimidation out of the equation for me as I took the leap into the "digital dentistry." Frank Weinstein is the right person to know if you are try...read moreIt's rare to find a company that actually has its customer's best interests in mind. They took all the intimidation out of the equation for me as I took the leap into the "digital dentistry." Frank Weinstein is the right person to know if you are trying to learn about and buy and use digital tools in your office. It's so mush easier when you have knowledgeable people who are really on your side.read less - 7/07/2021
Ellen Huang
Armen created series of these very helpful videos. They helped us tremendously in breaking into the new scanner we purchased. No matter you just got into digital dentistry or you are quite experienced with different fields of data acquiring or treatm...read moreArmen created series of these very helpful videos. They helped us tremendously in breaking into the new scanner we purchased. No matter you just got into digital dentistry or you are quite experienced with different fields of data acquiring or treatment planning, you will find those being tremendous help.read less - 5/24/2020
Great 1st lesson with Ryan on the Mediti700. We are ready to scan:) - 12/30/2022
David Chong
Digital dentistry has changed my work flow for the better and could not imagine going back. So important that I have the support when things don't work as expected. CAD-Ray has been there every step and trust their expertise and knowledge! - 4/20/2022
Jordan Bower
Frank helped me out when 3dbiocad could not help me with my trios issue. Thank you cad-ray. - 9/10/2024
Brenden Rogers
This company is excellent. Their knowledge, support, and sincerity is unmatched.Thank you, Frank, Damien, and Jonathan. You guys rock! - 5/08/2025
Levy Do
I'm a repeat customer because Cad-Ray's customer service is fast, efficient, and no nonsense. The classes offered for training for particularly for the Medit is awesome and it comes included which is phenomenal. All the classes that I've gotten to at...read moreI'm a repeat customer because Cad-Ray's customer service is fast, efficient, and no nonsense. The classes offered for training for particularly for the Medit is awesome and it comes included which is phenomenal. All the classes that I've gotten to attend so far has been well organized and I left learning very practical things. Remote support team solves my problem right then and there. Recently I had an issue, and instead of me talking to a sales rep who doesn't know what to do, Kaila remoted in and got it fixed just like that. Thank you and great job guys!read less - 4/19/2022
Susan Latimer
Cad Ray has always provided me with the best customer support for my Medit scanner. Today, I worked with Destiny. She is quick to respond and identify problems and also great at explaining how to fix them! I highly recommend this company! - 5/01/2025
Anita Madhav
Absolutely love Laura. She was my initial contact and is an amazing resource for any questions even months later. Would highly recommend buying from Cad Ray especially Laura! - 6/28/2022
Kent Lysgaard
This company has the best customer support I have ever experienced. I purchased the I700 Intraoral scanner and the transition from impression material to io scanner has been so easy because of Cad-Ray. I highly recommend them. The response to questi...read moreThis company has the best customer support I have ever experienced. I purchased the I700 Intraoral scanner and the transition from impression material to io scanner has been so easy because of Cad-Ray. I highly recommend them. The response to questions/issues is instantaneous even with a patient in the chair they have the capability to go online and help. Absolutely first rate.read less - 4/13/2022
Carter Mitchell
Pretty much echoing what everyone else has said. Frank DeLuca and the whole team at CAD-RAY are fantastic. The best customer service and support in dentistry, hands down, not even a close second. We are thrilled with our Medit scanner and will certai...read morePretty much echoing what everyone else has said. Frank DeLuca and the whole team at CAD-RAY are fantastic. The best customer service and support in dentistry, hands down, not even a close second. We are thrilled with our Medit scanner and will certainly be choosing CAD-RAY for any future purchases.read less - 12/30/2021
Bio Solution
Very great company, especially Frank. He is very helpful and has saved us a lot of money on resin for our 3D printers. We've recently bought a new scanner and Exocad software. He has been very gracious and quick to respond with the many questions I h...read moreVery great company, especially Frank. He is very helpful and has saved us a lot of money on resin for our 3D printers. We've recently bought a new scanner and Exocad software. He has been very gracious and quick to respond with the many questions I have had. Highly recommend Cad-Rayread less - 1/25/2023
Dong Lim
I’ve been using Medit for close to 2 years. It’s a must for any practice. No evil monthly subscription and great support from CAD ray - 6/16/2020
Nate Cherof
Excellent customer service and communication. Could not recommend them more - 2/14/2023
Mark Evans
I’d like to tell you a story about CAD-Ray.com.
I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little ind...read moreI’d like to tell you a story about CAD-Ray.com.
I ordered a VHF N4+ from CadRay. About two weeks after the order was placed, they called me up and said, “VHF just got an exclusive with “The Big Boys” so they are cutting ties with all the little independent distributors. They just called us, and we just found out. What this means is that we won’t be able to provide you service after purchasing the VHF mill that you just bought.”
Now, they could have just left it at that. They could have said, “Sorry, it’s out of our hands.” They could have said, “We appreciate your business, but it’s not our fault.” They could have said, “That’s the way the cookie crumbles.”
But they didn’t.
Frank Weinstein calls me up and tells me that they want to make this right, so they are going to hook me up with a brand new Imes Coritec One+ for the same price as the VHF. The Coritec One+ is like the Mercedes of mills for in-office. This is the new model that just barely came out. It is a 5 axis mill. It does wet and dry milling. It does blocks and pucks. It mills all materials know to man, including Vibranium. It can also fly the space shuttle, and make all your wishes and dreams come true. It’s that good. It came with the laptop, Exocad, all the tools, and all the bells and whistles. It came fully loaded. It came white glove delivered to my office. It came with in office training. It came with the extra bur package. It came with everything and the kitchen sink.
So, I paid 36k for a mill, and because of something that was not Cad-Rays fault, they ended up giving me a 60k mill for the same price.
In the words of the great Tony Stark: “That’s how Dad did it. That’s how Cad-Ray does it. And it’s worked out pretty well so far.”
Thank you Frank Weinstein and Armen Mirzayan for having outstanding customer service and going the extra mile every time.read less - 4/02/2021
David Christensen
I purchased the Medit i500 from Cad-Ray December 2018. I couldn’t be happier with the scanner. The improvements Medit has made over the last 10 months are nothing short of astounding! I can’t imaging what they’ll come up with next.
As for Cad-Ray...read moreI purchased the Medit i500 from Cad-Ray December 2018. I couldn’t be happier with the scanner. The improvements Medit has made over the last 10 months are nothing short of astounding! I can’t imaging what they’ll come up with next.
As for Cad-Ray, their support has been second to none. Never have I experienced the kind of attention and help from any other company. Wether it’s with help installing, computer hardware issues or technical help they respond IMMEDIATELY!
Armen is also a huge reason why I chose Cad-Ray. No one selling a product has helped me more evolve my scanning technique. He’s quick to respond to questions and issues I feel his service is a huge reason why to buy from CAD-RAY.read less - 10/09/2019
They all go absolutely above and beyond in all aspects. Whether it's tech support, products, CE, everything. Everyone I have dealt with has been wonderful. Love these guys! - 6/19/2020
Blake Ferando
I purchased my medit in April of 2019 from Cad-Ray. The support offered is second to none, and the training videos are some of the best out there. Add to that a great support team that is fast to answer questions and issues, its hard to beat Cad-Ray. - 6/19/2020
Rodney Baier
Cad ray has been very nice to work with. Excellence service and support since I bought my Medit scanner - 6/16/2020
Suresh Goel
I have enjoyed using the Medit i500 scanner. Previously I had two 3Shape scanners, however, the yearly fees were adding up and there are no ongoing fees with the Medit. Quality is great, and support has also been solid. Overall very happy with thi...read moreI have enjoyed using the Medit i500 scanner. Previously I had two 3Shape scanners, however, the yearly fees were adding up and there are no ongoing fees with the Medit. Quality is great, and support has also been solid. Overall very happy with this purchase.read less - 2/16/2020
The Medit i700 is a game changer in speed and overall comfort for patients. I find it much smaller than other brands and have done almost 50 appliances/aligner cases the past 2 months with no fit issues from my lab. Love this scanner!
Dr. Sherric...read moreThe Medit i700 is a game changer in speed and overall comfort for patients. I find it much smaller than other brands and have done almost 50 appliances/aligner cases the past 2 months with no fit issues from my lab. Love this scanner!
Dr. Sherrick
Auburn Lakes Orthodonticsread less - 8/24/2021
I was on the fence for a few years about getting into intra-oral scanning. I finally did it in the fall of 2019 and haven't looked back. I was hesitant mostly because I didn't want to spend a lot on $$$ on something that I don't end up implementing. ...read moreI was on the fence for a few years about getting into intra-oral scanning. I finally did it in the fall of 2019 and haven't looked back. I was hesitant mostly because I didn't want to spend a lot on $$$ on something that I don't end up implementing. I found that I love scanning, I feel like it has improved my quality of preps and my OCD of being able to verify accuracy. I recommend Cad-ray because they want you to succeed. They are always available. They have been through this process many times, they know what does and doesn't work. My experience is with the Medit i500 IOS.read less - 6/19/2020
Rosemary Toczydlowski
I had a phone call with Frank from support today, and he was awesome! Very helpful and knowledgeable. He sorted out all our issues no problem. Thank you Frank!! - 6/09/2021
Lauri Ann
I am about the worst person when it comes to technology. I decided to get a scanner and chose the Medit due to all the positive comments users had. I haven't used it much-the pandemic started right as I received it, however, the customer service has ...read moreI am about the worst person when it comes to technology. I decided to get a scanner and chose the Medit due to all the positive comments users had. I haven't used it much-the pandemic started right as I received it, however, the customer service has truly been amazing! I had an online training and a rep checked in with me several times to see if I needed help. I am going to do another online training soon as a refresher. I wouldn't hesitate to recommend this company and scanner to anyone!read less - 6/16/2020
Kirk Arritt (fldnstrm)
Whatever digital workflow addition you want to add to your dental practice look no further than Cad-Ray. Top notch support and training. - 1/29/2023
John Pobanz
We had an outstanding experience purchasing two Medit scanners. The delivery was timely . The onboarding clean. Laura was dazzling with her acumen and quick solutions . We highly recommend the investment in Cad Ray .Pobanz Orthodontics , Ogden Utah :...read moreWe had an outstanding experience purchasing two Medit scanners. The delivery was timely . The onboarding clean. Laura was dazzling with her acumen and quick solutions . We highly recommend the investment in Cad Ray .Pobanz Orthodontics , Ogden Utah :)read less - 12/10/2021
Milton Ruiz
Best customer service I have ever experienced from any company I have worked with! They alway answer the phone and are ready to help with whatever question you may have. Love that I do not have to press 500 buttons to get to a live person. Bought my...read moreBest customer service I have ever experienced from any company I have worked with! They alway answer the phone and are ready to help with whatever question you may have. Love that I do not have to press 500 buttons to get to a live person. Bought my Medit from them and could not be happier with decision!read less - 12/20/2022
Brian Wilkinson
This company is genuinely amazing. Amazingly good products, but the thing that sets them apart is the support. Frank and Sean have answered any questions I have unbelievably fast. And I LOVE the DOF Craft 5x milling unit. Learning the flow of same da...read moreThis company is genuinely amazing. Amazingly good products, but the thing that sets them apart is the support. Frank and Sean have answered any questions I have unbelievably fast. And I LOVE the DOF Craft 5x milling unit. Learning the flow of same day milling was tricky for me, but they held my hand the whole way. Can’t go wrong here.read less - 1/06/2024
Eric Reum
I bought a i500 almost a year and a half ago. Sadly it ran into an issue with the cord after over a years use. Cad-ray was extremely quick to diagnose the issue and also send a replacement scanner. The quality and ease of scanning has been great! Als...read moreI bought a i500 almost a year and a half ago. Sadly it ran into an issue with the cord after over a years use. Cad-ray was extremely quick to diagnose the issue and also send a replacement scanner. The quality and ease of scanning has been great! Also very happy with the customer service.read less - 6/02/2022
Jeff Muszynski
Fantastic customer service - 6/19/2020
Graham Reed
I got the Medit scanner last fall and I have been nothing but impressed by it and the support by CAD-Ray. The level of support, training videos, and continuously upgraded software is really impressive. If you are on the fence, you should feel confide...read moreI got the Medit scanner last fall and I have been nothing but impressed by it and the support by CAD-Ray. The level of support, training videos, and continuously upgraded software is really impressive. If you are on the fence, you should feel confident in moving forward with CAD-Ray.read less - 6/16/2020
David Stall
These guys are great. Always available and helpful. My scanning issues were dealt with quickly and courteously. - 10/01/2021
Jennifer Ebner
After using the medit i500 scanner at an office as an employee, I purchased it from Cad-ray,com specifically because of their good reviews and their large, concise training library of videos. I've used CEREC as an instructor at a dental school and bo...read moreAfter using the medit i500 scanner at an office as an employee, I purchased it from Cad-ray,com specifically because of their good reviews and their large, concise training library of videos. I've used CEREC as an instructor at a dental school and bought a used Planscan, Planmill for my private office. Both were hard to learn and the fees and cost associated with training were a bitter pill to swallow after the costs to purchase. The ease of seating restoration was instant. The scanning learning curve is quick. I have easily added occlusal guard scanning, and implant scanning and will be trying a digital denture soon.
The purchase was easy, the product came quickly and the set-up videos guided me through very necessary adjustments to my Laptop I never knew I needed. Learning the new features with each FREE update is a treat. The DIY option was an extra bonus as the $2000 rebate came without having to ask for it. Cad-ray has delivered more than I expected with the purchase of the fantastic Mediti500 scanner.
I've included my cart set up. purchased from Amazon for $68. Its stable, has room for the necessities. I've taken it home and back to the office half a dozen times and it transports the scanner safely. It also keeps the cords from being run over. I haven't taken the included 2 day course but look forward too it after Social Distancing mandates are lifted.read less - 4/25/2020
I purchased a Medit scanner in August and I am very happy with the scanner. I was trained on an Omnicam in dental school and used Omnicam for 4 years in my associateship. The speed and quality of the Medit scanner is comparable to a CEREC scanner but...read moreI purchased a Medit scanner in August and I am very happy with the scanner. I was trained on an Omnicam in dental school and used Omnicam for 4 years in my associateship. The speed and quality of the Medit scanner is comparable to a CEREC scanner but you can’t beat the price of the Medit! I would highly recommend this if you are a beginner or pro in digital dentistry!read less - 9/22/2020
Caroline Langlois
It's so nice to enter the digital age for scanning! I've been taking impressions since 1975. Medit i700 is amazing and our #1 supporter, Laura has been with us every step of the way. I truly don't know what I would do without Laura and Nick in tec...read moreIt's so nice to enter the digital age for scanning! I've been taking impressions since 1975. Medit i700 is amazing and our #1 supporter, Laura has been with us every step of the way. I truly don't know what I would do without Laura and Nick in tech support. They definitely need a raise! Yes, we had a couple of glitches (mostly operator error) but they were there with us all the way. The detail that the scan gives, whether it's a crown, bridge, full mouth scan for patient review and now many scans for NTI's is truly amazing! We recommend it highly to all who are interested! I am proof that as a dental assistant who's 64, you CAN teach an old dog new tricks!!!read less - 12/09/2021
Shant Aharonian
Cad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why:
1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer cust...read moreCad-ray has to be the best company to work with when it comes to digital dentistry solutions. Here are the reasons why:
1. Experience. Everyone in the company has extensive experience in dentistry. They have used all digital platforms and offer customers first hand experience.
2. Honesty. Based on their experience they share all the good/bad of different systems. They work with you to find a solution that works best for you. Not sell you the piece of the equipment that gives them the biggest commission.
3. Support. Cad-ray offers the missing piece of the dentist/digital manufacturer puzzle. Many other distributors sell you a piece of equipment but don’t have true day-to-day experience with that equipment. Cad-ray’s team openly share their expertise to help customers optimize their workflows with great technology.
4. Passion. The Cad-ray team is extremely passionate about their craft. They truly believe in what they have to offer.
I took Armen Mirzayan’s course on intraoral scanning and it was truly mind blowing. Armen’s insights will help any dentist optimize their craft. I purchased the full sprintray 3d printing ecosystem the help of Frank. I plan to purchase more equipment from cad-ray.
Also, Jesse is a genius in regards to all aspect of digital workflows. I’m truly grateful for this company and everyone who I’ve worked with so far.read less - 10/07/2022
Suzanne Stock
Excellent experience, customer service has been stupendous! - 11/20/2023
An often overlooked characteristics of an intra-oral scanner is the scan area / window. The larger the area, the more likely it is that your scanner will stay on track and not derail and introduce errors. In this video, we demonstrate how a small scan area, rendered either digitally or by small sized tips, can readily introduce errors known as the Veersing Effect. We can overcome this easily just by holding the camera in a proper orientation. Some scanners make this much easier because of their tip dimensions. The Trios 5 is 19mm x 13mm, the Medit tip is 15 x 13, and the DEXIS 3800 Side Tip can capture up to 19.6 mms. The 19 mm tip size makes these scanners the preferred ones for larger implant cases with extended edentulous spaces between the suprastructures.
In the video below, we will explain how the capture window size (field of view) affects the accuracy of intraoral scanning and provide tips on how to optimize the capture of data during scanning
Are you interested in an office build out or incorporating technology into your practice?
feel free to visit us when we are conducting courses or sign up to take a self guided tour at your convenience when you come out to Las Vegas for a business trip. You can reach us by emailing support@cad-ray-dev2.developerpad.com
the patient was sedated and intubated for the case so we could not keep track of the bite. Instead, we imaged all 30 prepared teeth and used medit compare / design to digitally mount them to the wax ups. In the link provided you can download the models and relate them to each other […]
To access this page and view the premium content and support, you must either be a customer of CAD-Ray or purchase CAD-Ray Membership.
Medit Compare, now called Medit Design, now has a boolean cut feature that lets you extract a temporary shell model from wax up or mock up model and prep model for easy and quick designs without painful margin marking on multiple units
Much like conventional impressions, digital impressions can render ill-fitting restorations. It is imperative to figure out the source of the problem and to understand if it is a scanning or manufacturing issue. We have compiled the top reasons for such errors in this article:
If the restoration is manufactured on printed models, you should be alarmed! There are so many variables that can be introduced in additive manufacturing process that can lead to less than desired results. Printed models should only be used after restorations are milled to assess contacts or to dial back bulky material to the margin on they die.
Translucent / transparent enamel can lead to inaccurate scans. This is most magnified when we work on conservative preparations made on enamel. See this article to understand the troubles that can be introduced while scanning glass. aa
3. We highly recommend that the clinician places his or her margins as soon as they image the preparation. Oftentimes, labs only work with STL models instead of color models and this leaves a lot of room for open interpretation and errors. Labs can then print the models to finish work like contacts and reducing margins they have bulked out to protect the material whilst milling.
With second molars, you should always be on the look out for not just the jaw settling, if you remove the first point of contact, but also with the temporary step forcing the tooth to tip towards the distal, if there is no third molar to stop its tilting.
In this case, a doctor was trying to seat a second molar crown he had just prepped a few weeks prior. There was an open contact and he could not ascertain the reason for this. He did take a second impression digitally so we had the chance to merge the two models and look for discreptancies between the preps. This video shows how the comparison of those two steps in Medit Compare
Still not a single article published that says Medit ios is a good scanner ! its just been user driven for 3 years now.
it’s a good thing, because the world just changed. it is irresponsible to extrapolate research done outside the mouth on stone models or impressions into clinical significance with intra-oral scanning. There are parameters that are impossible to quantify like focal distance throughout the scan (unlike desktop scanners with known focal distances), the codes use to do the algorithms, the scan patterns, and also how light is treated by enamel, dentin, and restored materials.
i can’t believe people still use terms like trueness and accuracy when they really don’t even exist when you scan intra-orally. Like analog impressions, it is impossible to judge digital impression accuracy LIVE while it is happening.
Enter Medit! There are a few distinct ways to demonstrate an accurate scan live while it is happening. One way is to import a geometric shape that doesn’t alter its form while models are being rendered. That’s what’s demonstrated here. To my knowledge no one has ever studied this approach because no other camera lets you do this. i did see some publications where the authors attached objects like radiographic markers and after it was processed, they could measure that object and see if it distorted or not, but nothing at this level.
One of the most important lessons a digital dentist has to learn quickly is how to not introduce errors when scanning dentition. The most likely area when s/he can introduce errors is in the anterior area where the incisor are not only narrower than molars but can also have translucent enamel. Add just a little spacing between teeth with diastemas and you can quickly distort the accuracy of the model. This is true of ALL intra-oral scanners in the market
Incisal Translucency / Transparency Causing Model Distortion
There are a few ways you can overcome these issues and the second video highlights some of our preferred methods. The concept is easy- block the light from travelling through the tooth structure and you are set! Watch the videos to learn how to do it
Here are some examples of how light shinning through the enamel and /or ceramic instead of bouncing back resulting in errors in model accuracy. Lesson #1 for every ios user is to know when and where they are likely to introduce error. in dentate cases, it usually is right that the transition from premolar to canine to lateral. The surface area decreases dramatically and if you have translucent enamel and / or material and / or highly reflective surfaces you can “derail” the model building. Here is an exaggerated demonstration
Translucent enamel can also play a role in distorting the cavosurface margins of a inlay or onlay restoration. When imaging from the occlusal, the gingiva below the margins acts as a barrier to block light transmission through the enamel, but as soon as you start to roll the camera to the buccal or lingual, and you have enamel with no substrate behind it to block light transmission, you can introduce errors in the equation with any scanner.
There are many ways to combat this which include powdering the tooth structure, using a rubber dam, or in Medit’s case, you can use the color subtraction filter. You selectively tell the scanner to ignore certain colors and you use that exact color (here, it is the color of the glove) to block light transmission through the enamel. So the software just ignores the blue, but the light is prevented from shining through reducing the errors you would introduce.
Here is another example of the distorted enamel margins on a conservative preparation and how blocking out the light from travelling through the tooth structure leads to crisp visualization of margins without any distortion or artifact
can you explain why we see blurred margins and artifact/distortion between the 2 centrals while in the second image the…
At CAD-Ray, we have now designed over 20,000 implant cases since 2013. One of the most common requests we get is from doctors doing full arches and their desires to reduce the conversion time. A simple thought to keep in mind is that A LOT can be derived from the actual implant plan, even if you don’t do the surgery guided. You can extract the digital implant positions and fabricate temps and based on your level of experience, your conversion / temporary time can drastically reduce.
Another very helpful matter to keep in mind is a concept we preach a lot at our courses. It deals with relating models to each other, both automatically and manually. This can be a CT scan to an intra-oral scan, or a pre-op to a post op. You just have to find redundant landmarks for the software to merge the models together. One thing to keep in mind, particularly with the Medit i500 is that when you merge models to each other and process it, their relationship to each other is preserved.
There is a lot of benefit that can be derived from that. For example, in this video, we have the dicoms converted to surface STL’s which is very easy to do. We also have the intra-oral scan merged to that stl file. You can digitally extract the teeth and do bone reductions, and if you are ever in a bind where you lost track of the vertical dimension, you can use the jaws as the means to related the preop to post-op. Or you can even use the nose if you are really desperate.
in this case we import multiple models, videos, CT scans, and Face Scans so that our users can utilize all of these features. Click here to enter the member’s section to download the whole case and design along
here is a list of why the Medit Artificial Intelligent Implant Suprastructure Identification System is significantly more advantageous over all other cadcam systems.
It s technically a crown and bridge case and the implant location or timing does not matter
You can find margins outside the mouth! See the first video to appreciate the significance of this
You don’t have to deal with retraction or hemostatis at all
You don’t have to worry about sprue position. Many other systems force the placement of the sprue to a specific location often making the case more difficult to manage than necessary
you are not limited to just a few implant lines
you don’t have to worry about location of anti rotational notch
you can digitally alter the prep and get a virtual reduction coping in cad
Use any restorative block you want. There is no need to order special blocks with pre-fabricated access channels and keep a large inventory of many colors. Your regular block inventory will suffice. Just make sure the top of the tibase is wider than the diameter of the drill used to mill out the intaglio. Also, the CAM and the milling machine determine the exact product and different settings maybe utilized to give you relief off the walls. Some will even remove the antirotational notch because the adaptation is so tight, the restoration will not rotate due to the tall walls of the tibase
You can check the fit outside the mouth on the same tibase or a one you keep chairside for every case to let you know that if you are not seating, it is clearly a contact or contour issue as opposed to an intaglio issue.
The following pictures depict the sequence of burs we recommend that you use to finish a preparation quickly. While patient is getting numb, take a quick look at the clearance you will need to reach proper material thickness. Once the quadrant is isolated with isolite and optragate, take an occlusal router bur and create a trough to gain the proper depth. Follow that with a flat disk, and you can quickly reduce the occlusal height.
A shoulder bur of .8 mm thickness can help you reduce the interproximal areas as well as the buccal and lingual margin lines. Before finishing the prep, place hemostatic agent like expasyl in the sulcus and place retraction cord. while it is setting, check your reduction. If you need more space, now is the time to reduce some more.
Once you have adequate clearance, retraction, and hemostatis, you can readily image and find your margins in the CAD software
Shining3d has a projector and a single camera that takes photos of the surfaces it is scanning. at first, you may think this is a shortcoming, but in many ways, it dramatically reduces errors a new user can introduce.
in the early days of cerec, all you needed to do was capture the margins and the area above the height of contours of the adjacent teeth. This made the try-in and the contacts really easy as the design software just dropped straight a straight wall down to make contacts to. same concept here!
also, after you image and place margins, A SINGLE CLICK takes you to design software where you can finish the case and mill it right away.
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the patient was sedated and intubated for the case so we could not keep track of the bite. Instead, we imaged all 30 prepared teeth and used medit compare / design to digitally mount them to the wax ups. In the link provided you can download the models and relate them to each other […] 
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