Posted on May 31, 2022June 1, 2022 by Armen Mirzayan — Leave a comment

Capturing a Dynamic Bite with the Trios 4 Wireless Scanner

In this video we demonstrate for new and potential users of digital dentistry a implant restoration where the dynamic bite is captured. We initially imaged the upper and lower jaws with 2 bites. Then we captured the dynamic bite and the returned for the jaw scan with the scanbody. There are many ways to approach this but this sequence we have found to be easiest for new users to digest.

The scanbody was captured after the bite because it usually is taller than the adjacent teeth. There is a chance you may injure the patient if you don’t follow the proper sequence

Patient Specific Motion Capture

Here is the fabrication process with Amber Mill Direct and DOF craft milling machine

Posted on April 11, 2022April 11, 2022 by Armen Mirzayan — Leave a comment

Introducing the Medit i700 Wireless Intra-Oral Scanner

In April of 2022, Medit launched its wireless version of the i700 intra-oral scanner. We’ve been testing it ever since and are impressed with the range that it has. You want to be within 10 meters but more importantly you want to have clear line of site from the scanner to the hub. Much like anything else that is wireless, the further you are from the receiver the more difficult it is to maintain connection. In this video we demonstrate the distance at which you can maintain good connectivity.

Testing the Range of the i700 Wireless

After connectivity we tested its ergonomics. Some users get frustrated with tangled cords that are teathered to the laptop computer. This is a great solution and there is not much weight added to the device making it very easy to handle

Ergonomics of Medit i700 Intra-Oral Scanner

In this video we show the layout of the battery pack, the scanner, and the dimensions of the battery pack. It is very easy to remove them and swap them with fully charged nodes.

Wireless Medit i700 Battery Configuration

In this video we had the chance to scan a full set of upper and lower temporaries. You can see all the great features of the scanner in action where we capture the maxilla and mandible in little time.

Posted on March 17, 2022March 17, 2022 by Armen Mirzayan

Full Mouth Rehab under Sedation

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.

Posted on March 4, 2022June 22, 2022 by Armen Mirzayan — Leave a comment

Fast and Easy Full Arch Temporary by Medit Design Software

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

Posted on February 2, 2022March 1, 2022 by Armen Mirzayan — Leave a comment

Proper Cooling Will Increase Tool Life and Reduce Milling Time

Most if not all milling machines do not adequately cool the tools or restoration while milling. At CAD-Ray we have developed augmenting tools that reduce or eliminate any dry milling of glass ceramic restorations. We can either run tubing from the holding tank or we can submerge the block for soaked milling

Coolicant Spray

Submerged Milling

Posted on December 6, 2021December 7, 2021 by Armen Mirzayan — Leave a comment

Top Reasons Why Restorations from Digital Impressions Don’t Fit

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:

1. 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.
2. 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

Comparing Intra-Oral Scan with Printed Model

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.

Mark your own margins

Models Printed and Mounted

Posted on November 18, 2021 by Armen Mirzayan — Leave a comment

Submit to Panthera Dental Directly

Until recently, when you submitted a case to Panthera Dental for a Obstructive Sleep Apnea Device, they would manufacture it and send it to one of their partner labs. This would delay the process and add other hurdles. You can now directly submit the cases through the meditlink portal. You must attach an Rx form and you must have an account with them.

if you modify your models to block out deep undercuts and capture the bite correctly you will have very little to no adjustments to make. We also recommend having the patient record your instructions so that you don’t have to repeat yourself. Most now do the titration remotely.

Easy Delivery

Posted on November 4, 2021 by Armen Mirzayan — Leave a comment

Submitting Models for Panthera Obstructive Sleep Apnea Device

It is a good idea to attach support pins to your models so labs don’t lose the vertical dimension and the protrusive position you captured

Panthera Obstructive Sleep Apnea Device

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prescription_D-SAD_L-022 v2

Changing the rods RA

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Dentsply PrimeScan Panthera Dental ordering process

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Posted on October 25, 2021 by Armen Mirzayan — Leave a comment

Introducing Medit’s Abutment Registration Feature

Medit’s software allows you to remove and pre-existing abutment and scan it outside the mouth. This allows you to find your margins without ever having to displace the tissue or reach hemostasis. Important matters to keep in mind with workflow

You must fill out the Rx form correctly and identify the abutment location
You must take the abutment scan at first in the right catalog box (upper jaw or lower jaw)
You must take the tibase / abutment outside the mouth and scan it under Abutment Registration Feature

watch the video for an introduction

Posted on October 20, 2021October 20, 2021 by Armen Mirzayan — Leave a comment

Anterior Crown Prep and Model Creator with Die

Here is a preview of the new Medit Model Builder with Ditched Dies where you can print the arches with support pins and separate dies

Model Builder with Dies

Download the case and design along: CAD Ray Anterior Crown and Die

Posted on October 12, 2021October 12, 2021 by Armen Mirzayan — Leave a comment

Full Arch Implant Planning Set Up with Medit i700

This used to be such a long process and we can bust them out in no time. take upper and lower scans in a minute. add lip…

Posted by Armen Mirzayan on Monday, October 11, 2021

Download the Medit Case with live scans

Download the CT scan dcm’s to design along

Posted on October 7, 2021October 7, 2021 by Armen Mirzayan — Leave a comment

AI Scanbody Match with Medit i700

In this video, we show how you to capture the healing abutment, the tissue profile after the abutment is removed, and then we image the scanbody while utilizing the AI feature of the Medit i700 to pick up all the data from the scanbody by matching the STL to the physical one during the scan

AI Scanbody Match

Posted on August 31, 2021August 31, 2021 by Armen Mirzayan — Leave a comment

Distalized Second Molar During Temporary Stage

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

Distalized Second Molar

Posted on August 25, 2021August 26, 2021 by Armen Mirzayan — Leave a comment

Meshwork in Local HD and RD Scanning

The Medit scanner has a feature where you can locally capture a preparation in HD mode.

This allows for more crisp visualization of tooth anatomy and morphology but most deem it clinically insignificant

Scanned in HD and in RD

In this case a preparation was captured twice, once in regular definition mode and again in high definition mode

Meshwork in Local HD and RD Scanning

The models were then rendered and compared and the differences were analyzed. You can import them into medit compare and see
For yourself

This crown was replaced along with multiple class 2 restorations approximating it. This last video shows the try-in of the amber mill block

HD vs RD local

Fabrication of Lithium Disilicate Crown

Posted on August 24, 2021August 24, 2021 by Armen Mirzayan — Leave a comment

Excessive External Light Source Can Alter Your Models

The overhead light source can distort your models and impressions. This particular doctor had excellent preparations and retraction but the light source kept flooding the dentition resulting in ill-fitting restorations. Our crew at CAD-Ray remotely logged in through teamviewer and was able to review the logged video while scanning and instantly noted the source of the error.

The Medit software and scanner have a setting that can warn you if there is too much excessive ligthing.

Excessive light

Posted on August 23, 2021 by Armen Mirzayan — Leave a comment

Creating Your Own Dental Morphology Library

Medit Orthodontic Simulation application allows you to segment out individual teeth from patient scans into an stl format that you can use as a template for smile design wax-ups. You have to watch the vide for it to make sense

Export individual morphology

Posted on August 19, 2021August 24, 2021 by Armen Mirzayan — Leave a comment

The Digital 3D Shade Guide

3d-shade-guide-instructions

We’ve digitized the Vita 3D shade guide to help with color identification. The same Medit scanner was used to scan the tabs and then this digital file was created. the assumption is that the same camera and light will hit natural dentition and the net effect will be the same. Use at your own risk.

3D Shade Guide

DOWNLOAD THE 3D Shade Guide

i think this can work!

i scanned the vita 3d shade guide with the same light i would use to scan teeth. Start with matching the value, then the hue, and then chroma.

*** correction made

Posted by Armen Mirzayan on Wednesday, August 18, 2021

Posted on August 2, 2021August 3, 2021 by Armen Mirzayan — Leave a comment

Measuring Intra-Oral Scanner Accuracy and How Accurate is the Medit Scanner?

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.

You can download the case and design along

Posted on August 1, 2021August 1, 2021 by Armen Mirzayan — Leave a comment

Medit’s Model Builder and Ortho Simulation Apps and the American Board of Orthodontics Electronic Cast Radiograph Evaluation (CRE)

The following information is from the The American Board of Orthodontics. We preview how the Medit Ortho Simulation and Model Builder can satisfy their criteria

AOB Standards and Medit

ortho simulation wiht model builder

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grading-system-casts-radiographs

Posted on July 29, 2021July 29, 2021 by Armen Mirzayan — Leave a comment

Introducing the Medit Model Builder

Medit has many free applications, including Smile Analysis, Orthodontic Simulation, and now, Medit Model Builder

Adding bases has been a feature for a while but as usual, Medit was quick to respond to its users’ request by expanding the base to including holes for drainage in printing and by allowing us to add support pins to the models. Many people who have printers, whether labs or clinicians, easily lose the proper vertical relationship when they print the models. By adding these pins, it allows you to index the models properly for any finishing work someone may need to do.

Advanced users are unlikely to use this feature for a single unit, but it comes in handy for oral appliances, particularly when they have advanced the jaw to open the airway. Oh, and this app is free and you can use it with models created by any scanner

Medit Model Builder

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Submerged Milling

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Models Printed and Mounted

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ortho simulation wiht model builder

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Medit has many free applications, including Smile Analysis, Orthodontic Simulation, and now, Medit Model Builder