Send us Photos, Securely!

In today’s environment, communication is key in being successful.

It’s also about feeling secure. That’s why we have opted to use WeTransfer’s file sharing services for sending large size files, or large quantities of files.

Their service is GDPR compliant which is considered a framework similar to Canada’s PIPEDA act with regards to policies of the collection and security of data processing.

With the technical stuff out of the way, let’s get to the good stuff, sending photos and files!

How to send files via WeTransfer

  • Open your preferred web browser (ie. Chrome, Firefox, Edge, etc).
  • Navigate to There is no need to make an account or sign up for anything. Just click “No Thanks”.
  • Now, fill out the form as shown in the picture below.

send To:, and type in your email address in the From section. Fill in the message section with the patient name and shade tab
  • Open the folder that contains the pictures of your patient. The pictures should include 1 or 2 .NEF files and up to 5 JPG images.
  • Select the files by Shift or Ctrl Clicking and drag them to the browser window.
  • Once you have dragged the files over, they will then appear in the form:
  • After all files have been added, and form is filled out, you can click the Transfer button.
  • You may also have to supply a verification number which will be emailed to the address you type in for your clinic.
    Just retrieve the code from your inbox and paste or type it into the verification field and click Verify.
  • You will receive an email confirmation that the photos have been sent, and when we retrieve them, all securely.

This will have completed your session of sending photos/files securely to us.

If you are more of a visual learner, give this brief tutorial a watch:

Posted in Education, Featured | Tagged , , | Comments Off on Send us Photos, Securely!

Rotsaert Dental Laboratory is a Certified MIS MGUIDE center in Canada

Rotsaert Dental Laboratory is excited to partner with MIS, to be their design and fabrication center in Canada for the MGUIDE system.

Rotsaert Dental Laboratory has been in business since 1964. This family-run business was established by Henri Rotsaert.

Henri had a passion to be innovative and always moved forward in the world of dental technology. He instilled this in his children Eric, Mark, and Nicole Rotsaert RDT who now operate the business. Rotsaert’s dedicated team of technicians enables the company to grow and take on new services that we can provide with confidence to the Dental market.

Jennifer Dibben RDT is spearheading the case planning department for MIS Digital Dentistry MGUIDE in Rotsaert Dental Laboratory. She has many years of experience working with Dentists, Oral Surgeons and Periodontists in case planning and fabrication of surgical guides. With Jennifer’s experience and Rotsaert Dental Laboratory’s drive for excellence, Dentists, Periodontists and Oral Surgeons can place implants with confidence using the MIS MGUIDE system.


An innovative guided surgery system, which was designed to provide clinicians with a worry-free solution. It flawlessly incorporates prosthetically driven planning and easy-to-use tools, to deliver the most
predictable results.

mis mguide logo
MIS kits

Work-Flow and Timeline for Digital Surgical Guides

Mguide Timeline

Download all data necessary for guide fabrication.

This includes Raw Dicom Data of adequate Field Size 1*

Upper and Lower Oral Scans or Models Any previous diagnostic wax-ups Complete Script including contact info 2*

Dicom image of skull
scan of upper and lower jaws

Once all relevant data has arrived the Lab will examine the data and generate a preliminary plan.

Within 48 hours the lab will contact the Doctor at their preferred email address to let them know that they are ready to have an online meeting. The meeting should take about 15-20min depending on the size of the case. At that meeting, the Doctor will be able to make any changes they like, and the plan will be locked.

scanned plan 1
scanned plan 2
scanned plan 3
scanned plan 4
scanned plan 5

A ‘post meeting review’ email will be sent to the Doctor along with a surgical protocol and a release form to sign. When the form is signed and returned the guide will be printed and sent to the Doctor’s office. This could take up to 4 business days depending on the distance the case needs to be shipped.

Posted in Featured, Implants, Restorative | Leave a comment

A Laboratory Evaluation of Localized Wear of Splint Materials.

Printing KeySplint Soft

KeySplint Soft

Leinfelder Wear Simulator was used to simulate the wear in vitro KeySplint Soft when stored at 37°C for 24 hours followed by placement in PMMA beads slurry and then exposed to localized wear using stainless steel. Volume loss(mm3) and maximum depth (μ) was calculated after 400,000 cycles which is said to be equal to 3 years of clinical wear.

Wear conditions in removable dental appliances can be categorized into generalized and localized conditions, where wear due to the masticatory forces is said to be generalized and direct tooth to material contact is localized. This study indicates that KeySplint Soft™ material wears less in both conditions in vitro.

KeySplint Soft™ changes its properties with temperature and thus becomes more pliable when in contact with the body temperature, reducing the chances of fracture. KeySplint Soft does not show any cracking on magnification, thus suggesting energy absorbing behavior. Furthermore, this material when subjected to continuous temperature change intraorally and at room temperature enhances the longevity of the appliance.

When DigiSplint is warmed up under hot water it becomes flexible.

DigiSplint trims like hard acrylic.

A Laboratory Evaluation of Localized Wear of Splint Materials (PDF 3MB)

Posted in Nightguard | Leave a comment

Rotsaert Dental Laboratory support RNAO’s #TogetherWeCanDoIt campaign

RNAO logo

The Registered Nurses’ Association of Ontario (RNAO) wants everyone to join in and actively show our support for health providers and other essential services.

Beginning Thursday, March 19, 2020 at 7:30 p.m. local time and every evening going forward, RNAO is asking everyone – from the doorsteps of their homes or keeping a safe distance – to cheer on the millions of health providers, social service and other essential front-line workers in Ontario, Canada and around the world who are tackling #COVID19.

RNAO invites Ontarians to show their support in honour of those heroes keeping us all safe, while keeping in mind social distancing. “Step out onto your porch, balcony, or open a window and make some noise. Take a short video of yourself banging some pots and pans, singing a song, applauding, or honking your horn, and share it on social media,” says Dr. Doris Grinspun, RNAO’s CEO.

What:  #TogetherWeCanDoIt campaign to cheer up health-care providers

When: 7:30 p.m. sharp local time beginning March 19, 2020 and every day going forward until the fight against #COVID19 is over


  • Make yourself heard by stepping out onto your porch, balcony, or open a window and make noise: bang pots and pans, sing a song, applaud, or honk your horn
  • Tell your family, friends and neighbours to get involved
  • Post your cheering-up activity on social media with the tag @RNAO and using the hashtags #TogetherWeCanDoIt and #Cheer4HealthWorkers

“This amazing spirit of human solidarity must become even more infectious than the virus itself.”   – Dr. Tedros, World Health Organization

Let’s make Dr. Tedros’ words a reality!

The Registered Nurses’ Association of Ontario (RNAO) is the professional association representing registered nurses, nurse practitioners, and nursing students in Ontario. Since 1925, RNAO has advocated for healthy public policy, promoted excellence in nursing practice, increased nurses’ contribution to shaping the health system, and influenced decisions that affect nurses and the public they serve. For more information about RNAO, visit our website at or follow us on Facebook  and Twitter.

For more information, please contact:

Marion Zych
Director of Communications
Registered Nurses’ Association of Ontario (RNAO)
Phone: 416-408-5605 / 1-800-268-7199 ext. 209
Cell: 647-406-5605

Victoria Alarcon
Communications Specialist/Coordinator
Registered Nurses’ Association of Ontario (RNAO)
Phone: 416-408-5610 /1-800-268-7199 ext. 211

Posted in Education | Leave a comment

Our COVID 19 emergency preparedness and support commitment

The COVID 19 pandemic represents a significant health and economic threat to Canadians everywhere. Rest assured that the health and well-being of our clients and team members is always our top priority. Rotsaert Dental Lab has always followed strict guidelines on infection control, which is vital now more than ever.

A recent message from the RCDSO “recommends that all non-essential and elective dental services should be suspended immediately. Emergency treatment should continue.”

In light of this recommendation, we have suspended patient shade-taking and/or walk in adjustments. Our clients may send us emergency cases, and we will ensure the highest level of quality, service and attention to detail in fabricating the patient’s prosthesis.

Thank you for your continued support and confidence in our team at Rotsaert Dental Lab.

We will weather the storm that is COVID-19 together.

Nicole Rotsaert, RDT


Posted in Featured | Leave a comment

Frequently Asked Questions – 3M™ Lava™ Esthetic Zirconia

Full-Contour Zirconia

What is 3M™ Lava™ Esthetic Zirconia?

Lava Esthetic zirconia is a CAD/CAM disc for dental lab fabrication of esthetic all-ceramic full-contour restorations. It is a pre-shaded, high translucent cubic zirconia material with a natural color gradient optimized for esthetic full-contour restorations.

What is cubic zirconia?

A new all-ceramic material class based on zirconia. Compared to conventional zirconia, cubic zirconia offers a significantly higher translucency at a reduced strength level. Cubic specifies the dominant crystal structure present in Lava Esthetic zirconia. In conventional zirconia products like 3M™ Lava™ Plus Zirconia, the tetragonal crystal structure is dominant.

How does the composition of Lava Esthetic zirconia compare to Lava Plus zirconia?

Both are “polycrystalline” materials, this means that they consist of many small crystals. The crystals are composed of zirconium dioxide (syn. zirconia) with a small addition of yttrium oxide (syn. yttria) (3 mol%– 5 mol%). The yttria content determines the so-called “phase or structure” of the crystals, i.e. how the Zr and O atoms are arranged in the crystal lattice.

Zirconia has three distinct phases: monoclinic, tetragonal and cubic. Conventional zirconia such as Lava Plus zirconia contains around 3 mol% yttria and the crystal phase is predominantely tetragonal. Under mechanical stress the crystals can undergo a phase transformation to monoclinic. This leads to a local volume increase that impedes crack propagation and makes conventional zirconia the strongest and toughest ceramic used in dentistry.

Lava Esthetic zirconia contains 5% mol, the crystal phase is predominantly cubic. Cubic grains are larger and have isotropic (same in all directions) optical properties. This leads to less scattering of light and therefore greatly improved translucency.

What is the main difference between Lava Esthetic zirconia and other cubic zirconia?

The Lava Esthetic zirconia discs are gradient pre-shaded with a new proprietary shading chemistry with four shading elements. This enables a true color match to VITAclassical shades and makes Lava Esthetic zirconia the first zirconia with inherent tooth-like fluorescence built into the disc.

What is tooth-like fluorescence and why does it matter?

Sunlight and artificial light contain invisible ultra-violet (UV) light. Natural teeth look blue in UV light because they absorb UV light and emit visible blue light. This is called fluorescence. To look natural in all light conditions restorative materials have to mimic this effect.

How can I achieve the best final shade match?

Lava Esthetic zirconia offers a built-in shade gradient and inherent fluorescence for a true match to VITA classical shades. Glaze restorations to achieve best match to selected shade. Lava Esthetic zirconia has a high translucency so that dark preparations may shine through. Communicate the stump shade to your lab to ensure shade match.

Will Lava Esthetic zirconia replace any of the current Lava zirconia products?

No, Lava Esthetic zirconia comes in addition to the current portfolio. It is a new type of zirconia for productive high-esthetic full-contour restorations. Lava Plus zirconia remains our versatile high strength zirconia option.

What is the strength of Lava Esthetic zirconia?

Lava Esthetic zirconia offers a 3-point bending strength according to ISO 6872:2015 of 800 MPa and is qualified for Type II, class 4 indications: Crowns, bridges with one pontic between two crowns, inlays, onlays and veneers.

Lava Esthetic zirconia has a significantly higher flexural strength than IPS e.max® CAD. Lava Esthetic zirconia has higher flexural strength than other leading super-high translucent cubic zirconia, but less than Lava Plus zirconia.

What is the fracture toughness of Lava Esthetic zirconia?

Lava Esthetic zirconia has a fracture toughness of 4.4 ± 0.5 MPam½ measured by the SEVNB method according to ISO 6872:2008. And, it has a significantly higher fracture toughness than IPS e.max CAD.

What indications can be covered with Lava Esthetic zirconia?

  • • Crowns
  • • Bridges (max. 1 pontic between two crowns)
  • • Inlays, onlays, veneers
  • Please refer to Instructions for Use for details.

What is the minimum wall thickness and minimum connector cross-section requirement for Lava Esthetic zirconia?

Wall thicknessBridge connector cross section
Anterior ≥ 0.8 mm ≥ 12 mm²
Posterior ≥ 0.8 mm ≥ 14 mm²

Can Lava Esthetic zirconia restorations be used on implants?

Yes, Lava Esthetic zirconia crowns and bridges (with max. 1 pontic between two crowns) can be used on implant abutments.

Can Lava Esthetic zirconia be used for adhesive bridges such as Maryland bridges or inlay/onlay bridges?

No, Lava Esthetic zirconia is released for bridges with maximum 1 pontic between two full coverage crowns.

Can Lava Esthetic zirconia be used for cantilever bridges?

No, Lava Esthetic zirconia is released for bridges with maximum 1 pontic between two full coverage crowns.

Can bruxism patients use Lava Esthetic zirconia?

For cases with very limited space or parafunctional patients requiring ultimate strength, choose Lava Plus zirconia.

In what shades is Lava Esthetic zirconia available?

There are eight shades available at launch: Bleach, A1, A2, A3, A3.5, B1, C1, D2. Additional shades are under development and will be available in 2017.

Is a white Lava Esthetic zirconia disc for liquid shading available?

No. There are no white discs and no liquids available. All Lava Esthetic zirconia discs are pre-shaded and must not be used in combination with liquids.

In what formats is Lava Esthetic zirconia available?

Lava Esthetic zirconia is available in 98 mm disc format with step in three heights: 14, 18 and 22 mm.

Is Lava Esthetic zirconia available on a CEREC® mandrel?

No, Lava Esthetic zirconia is available in 98 mm disc format with step.

Is Lava Esthetic zirconia available in frame format?

No, Lava Esthetic zirconia is available in 98 mm disc format with step.

Which milling systems are compatible with Lava Esthetic zirconia discs?

Lava Esthetic zirconia discs fit into open milling machines compatible with 98 mm disc format with step suitable for dry milling of zirconia, e.g.:

  • • Roland DWX-50, DWX-51D
  • • Sirona InLab MC X5
  • • VHF K3, K4, K5, S1, S2
  • • imes-icore CoRiTEC 245i, 250i, 350i, 650i, 850i
  • • Yenadent D14, D15, D40, DC40, D43

This list is for guidance purposes only – many other compatible milling systems exist and new systems enter the market frequently. Always check with milling system suppliers for compatibility. Lava Esthetic zirconia discs are not compatible with Zirkonzahn Mx, Sirona Inlab/CEREC MC XL, 3M™ Lava™ Form and 3M™ Lava™ CNC milling systems.

How should Lava Esthetic zirconia be milled?

The Lava Esthetic zirconia discs are optimized for dry milling processes and can be milled with CAM strategies and parameters suitable for zirconia.

However, the surface quality of milled restorations and the yield rate greatly depend on set milling parameters, machine and tool types and the interaction of Lava Esthetic zirconia discs with your system. Thus, the following milling parameters are recommended:

Job Feed (mm/min) Step down (mm) Step over (mm) Spindle speed (RPM) Carbide tool diameter (mm)
Roughing 6000.40.610,0002
Rest material roughing 6000.30.330,0001
Finishing inside 3D/occlusal1350n.a./0.15 0.1525,0002
Finishing margin line 3D 500n.a.0.125,0002
Finishing outside cavity 8000.150.1525,0002
Fine finishing inside 3D 1,000n.a.0.1220,0001
Fissure machining 80010.230,0001
Fine fissure machining 5000.50.1530,0000.5

Please ask your CAM module and mill supplier for help to adapt the parameters in your system if necessary.

Is Lava Esthetic zirconia compatible with 3M™ Lava™ Frame or Lava Plus dyeing liquids?

No. Lava Esthetic zirconia must not be used in combination with any dyeing liquids. The use of dyeing liquids can reduce the strength of the material and compromise fluorescence and shade match.

What is the sintering cycle for Lava Esthetic zirconia?

Cycle StagesCycle Parameters
Cycle StagesCycle Parameters
Heating20 °C/min to 800°C
10 °C/min to 1,500°C
Holding Time120 min at 1,500°C
CoolingMax. 15 °C/min to 800°C
Max. 20 °C/min to 250°C

In our lab we already use certain sintering cycles for zirconia. Is it ok to sinter Lava Esthetic zirconia with my current cycles?

No. Lava Esthetic zirconia must be sintered with the cycle displayed above. Using a different sintering cycle can have negative effects on strength, translucency and/or shade.

What is the drying time of Lava Esthetic zirconia after shading with liquids? Is there a special sinter program including a drying step?

There is no drying time because Lava Esthetic zirconia must not be used in combination with any dyeing liquids. The use of dyeing liquids can reduce the strength of the material and compromise fluorescence and shade match.

What is the recommended finishing for full-contour Lava Esthetic zirconia restorations?

It is recommended to glaze restorations to achieve the best match to the selected shade and a natural, esthetic appearance.

Alternatively, the restoration can be polished using rubber polishers and polishing brushes with diamond polishing paste. This may cause a change in the shading results. This can be avoided, in part, if a shade lighter than desired is selected.

Which stains and glazes can be used?

Low-temperature (< 900 °C) firing glazes and stains suitable for use with zirconia must be used. A vacuum during the glaze firing holding time is not recommended. When Lava Esthetic zirconia is used in combination with a glaze, the manufacturer´s instructions for use must be observed.

Examples of compatible glazesExamples of compatible stain systems
• Creation ZI/ ZI-F Glaze • IPS e.max® Ceram Shades
• IPS e.max® Ceram Glaze • IPS Ivocolor™ Universal Stains
• Amann Girrbach Ceramill® Glaze • Amann Girrbach Ceramill® Stains
• Noritake Cerabien ZR External Stain Kit

How can I cement a restoration made of Lava Esthetic zirconia?

For final cementation of crowns and bridges, 3M recommends using 3M™ RelyX™ Unicem 2 Self-Adhesive Resin Cement offering high bond strength and ease of use without compromising reliability and esthetics.

Depending on the requirements, Lava Esthetic zirconia restorations may be cemented either conventionally (e. g. with glass ionomer cements such as 3M™ Ketac™ Cem Glass Ionomer Luting Cement or a resinmodified glass ionomer cement such as 3M™ RelyX™ Luting Plus Cement) or adhesively (e. g. with 3M™ RelyX™ Unicem 2 Self-Adhesive Resin Cement or 3M™ RelyX™ Ultimate Adhesive Resin Cement).

How do I pre-treat the bonding surface of Lava Esthetic zirconia?

Bonding surface must be sandblasted (30–50µm median particle size alumina, 2 bars/30 PSI). HF etching does not work.

If sandblasting is done in the lab, please make sure to clean the restoration surface with 5.4% NaOCl solution (Sodium Hypochlorite Bleach Solution), rinse and dry after the final try-in right before applying the cement. Do not clean with phosphoric acid.

Can sandblasting or diamond grinding reduce strength?

Yes. In general, strength is lowered by surface roughening of a ceramic material. This is true for mechanical treatment of all cubic zirconia materials as well as for HF etching of glass ceramics.

If adaptations were made to a restoration with diamond tools, make sure scratches or rough surfaces are smoothened with rubber polishers used for ceramics before cementation.

Fatigue studies conducted at the University of Alabama, Birmingham, have shown that sandblasting does not have a negative impact on the durability of Lava Esthetic zirconia restorations when cemented with RelyX Unicem 2 cement.

Do I need a primer for Lava Esthetic zirconia?

Follow the instructions of the cement you use – if it says use a certain primer for zirconia then you should do that. 3M recommends using RelyX™ Unicem 2 cement which does not require a separate primer for cementation of Lava Esthetic zirconia crowns and bridges.

How can restorations made of Lava Esthetic zirconia be adjusted and polished intra-orally?

Lava Esthetic zirconia is easier to adjust and remove in comparison to conventional zirconia. Adjust as needed with fine-grain diamond bur and water cooling. Make sure to maintain a minimum wall thickness of 0.8 mm. Polish adjusted areas with rubber polishers used for ceramics.

Frequently Asked Questions – 3M™ Lava™ Esthetic Zirconia PDF File (300KB)

Posted in Education, Zirconia | Leave a comment

The Intraoral Scanner that conquered the dental market by storm is now Available in Canada.

MEDIT’S Latest Product, The I500 Intraloral Scanner, Exemplifies Three Qualities:
Value, Efficiency, and Productivity

With its impressive speed and powder-less system, the i500 allows for a smoother scanning experience, shortening turnaround times and increasing the productivity of your clinic. Regardless of your specialization, the i500 has diverse applications, ensuring that your professional needs are met. Increase your work efficiency with the vast flexibility that the open CAD/CAM system offers and never worry about compatibility issues again.

Perfect Software and Hardware Combination:
Value, Efficiency, and Productivity

The i500 scanner and its accompanying software is pleasant to use and easy to understand, making it accessible to all users, and simple to incorporate into your practice or lab.

User-Friendly UI

Our software user interface is intuitive with a streamlined process so you can spend less time on scanning and more time on diagnosing and treating your patient.

Undercut Area Analysis

This feature allows you to analyze the undercut area based on insertion direction. You can set the insertion direction via two methods (auto or manual direction).

Automatic Alignment 

The iScan software automatically finds the occlusion with a simple scan of the bite.

Occlusion Analysis

The occlusion analysis feature quickly controls and displays the interference between the maxilla and mandible and shows the results with the color map.

Lock Area

You can lock the scan area by painting it and locked (colored) area will not be updated by further scanning. Use this feature to fix retracted gingiva after immediate scanning as it might collapse. You can still trim the locked surface. The deleted locked surface can be re-scanned.

HD Camera

You can take 2D images without 3D model data and share the images with a laboratory.

One Software to Connect them all

Medit’s new workflow management and communication software, Medit Link, was developed to enhance your performance. Its integrated Cloud Storage and open data architecture ensures that your clinic’s performance is optimized, while supporting your everyday CAD processes with its real-time workflow management and communication tools. In addition, Medit Link enables you to stay focused on your important tasks by giving you an overview of your current digital processes and associated costs.

Cloud Storage

Cloud storage is becoming a basic necessity as files and information go digital. That is why Medit Link is packaged with cloud storage which provides you with the ideal storage space for all of your patients’ files. You can save both digital impressions and patient treatment information securely on the cloud. Medit Link facilitates automatic uploading and downloading of databases and files via Amazon’s AWS. Data is automatically synchronized from the PCs of multiple users within the same company; technicians can work conveniently from any PC where Medit Link software is installed.

Dashboard (Coming soon)

Data is accessible in a summarized form at a glance. Keep track of all your orders, including relevant costs, scan types and patient visit rates. Medit Link enables easy management of ordering and performance and effective communication with digital dentistry partners.

Payment & Collection

Medit Link is integrated with Stripe (, the online payment platform, and the payment module (, which makes payment easier for everyone. In addition, wire transfer and payment skip methods are also available. With Medit Link’s payment management system, you no longer need to worry about forgetting a payment. Let the system handle the administrative tasks so you can focus on being more productive.

Easy Communication (Coming soon)

We know how important effective communication is, especially at work. This is why we have developed Medit Link to make communication as seamless as possible between clinics and labs. By enabling real-time communication between you and your lab, Medit Link ensures that the error rate of your order is minimized.

3D Viewer

After completing the scanning process in the i500 scan software, you can preview the final image via the 3D viewer in Medit Link.

How You Will Benefit from Our i500 Intraoral Scanner

Save money, time, and materials

Low inputs throughout the machine life cycle and no necessity for mold materials or powder in most cases are among the ways savings are achieved when using the i500. Furthermore, high accuracy and precision coupled with intelligent scan recognition and fast scan speed will reduce chair time significantly.

Experience convenience

Our intraoral scanner is an absolute lightweight which reduces the required effort when scanning for extended periods. The single button control allows you to start and stop the scanning process while holding the device easily. Additionally, you will be able to monitor captured 3D in-motion images on the screen next to you throughout the task. Another factor for increased convenience is the small tip for optimized patient comfort.

Digital workflow

The i500 intraoral scanner is partnered with Medit Link, an integrated collaboration tool that allows fast and easy transfer of scan data to dental labs, effective communication, and seamless workflows. Integrated cloud storage and open data architecture ensure optimized performance and a reduction of chances for human error while supporting your everyday CAD processes.

Posted in Digital Dentistry | Leave a comment

Exocad – Bite Splint Module for Nightguard

Rotsaert Dental Laboratory is proud to announce that we use Exocad’s Bite Splint Module to digitally design a nightguard.

With Exocad’s Bite Splint Module, therapeutic night guards can be designed quickly and in high quality. We recommend using a combination of both Bite Splint Module and Virtual Articulator for optimal patient-specific results. Output files can be either milled or printed.

Step by Step run-through on how to create an Occlusal Bite Splint

Block-out Direction

block out direction
Block-out Direction

Freeform Black-out Area

freeform black-out area
Freeform Black-out Area

Perform Virtual Articulation

virtual articulation
Perform Virtual Articulation

Define the Margin line

Define the margin line
Define the Margin line

Calculate the Splint

Calculate the Splint
Calculate the Splint

Adapt the Splint to Antagonist

Adapt the Splint to Antagonist
Adapt the Splint to Antagonist

Cut Intersections

Cut Intersections
Cut Intersections

Freeform the Splint to smooth out edges

Smooth Edges

Produce the final result

Final Design Nightguard
Produce the final result

The produced Occlusal Bite Splint

Finished Nightguard
The Final Product
Posted in Nightguard | Leave a comment

Send Us Your Case

Box with fragile stamp

Digital Impression or Physical Impression

Sending your Digital Impression Case

Medit i500/ i700

– Create or Login to your Medit Link account
– Select “CASE BOX” on the left
– Click your scanned case to open it
– With the case open, click the ‘Order’ button at the bottom
– The Order Case window will open. Be sure to check the Partner in the drop down menu at the top.
– Choose your delivery date, and add any notes you wish to in the Memo For Order field. Then click Ok
– The order will process and be sent to the Partner. You will be returned to the case window, and you will now see an “Ordered” indicator on the case information.


– Create or Login to your CEREC Connect account
– Type “Rotsaert Dental Laboratory Incorporated” in the box for Company Name
– Click FIND
– Check the box to the bottom left for “Rotsaert Dental Laboratory”
– Click ADD to complete the registration


– To connect with Rotsaert Dental Laboratory, call Align Technology at 800-577-8767 and request to have your scanner connect with Lab ID 4389
– After connecting to us as a Lab, select Rotsaert Dental Laboratory on your scanner when sending files


– Go to in a web browser
– Connect with “Rotsaert Dental Laboratory Incorporated” by searching
– After connecting to us as a Lab, select “Rotsaert Dental Laboratory Incorporated” when sending files

3M™ True Definition Scanner

Call 3M support at 800-634-2249 select Option 3
– Select Option 1 and request support Emerald Dental Works be added to your scanner
– 3M will then confirm with Emerald Dental Works and add connection remotely

E4D-Planmeca Planscan

– Select Find a lab option on your scanner
– Search for either Emerald Dental Works or
– Add Emerald Dental Works
– Select Emerald Dental Works when submitting scans


Option 1
– Email Emerald Dental Works at

Option 2
– Visit Carestream Connect on your scanner
– Search for Emerald Dental Works
– Add Emerald Dental Works
– Select Emerald Dental Works submitting scans raw STL files
– Email Emerald Dental Works at

Send us your Physical Impressions

Models and Impressions

Sending us your physical case is easy! Just follow the three steps below:

First Step:

Call the Rotsaert toll-free number at 1-800-263-2113. Ask if we have a driver that will be in your area. We have six different routes! Not on a driver route? Do not worry! Our receptionists will walk you through sending us your case via FedEx. If you are within Canada, we will pay the courier charges both ways!

Second Step:

Include the following with every case you send:

  • An impression or 2 working models
  • One (1) accurate opposing model
  • Bites, when needed
  • Study Model & Photographs for anterior work

Third Step:

Package your case for maximum protection. Make sure you have at least two layers of bubble or one layer of foam wrap around each item. Tape, or use a rubber band to secure the models. Place the models and impressions into a Rotsaert box, add extra padding, seal the box and ship to Rotsaert Dental Laboratory Incorporated.


Call us at 1-800-263-2113 or email us at We will send you an email with the Shipping label. Please print label and attach on your package. After the case is packed, go on the UPS/FedEx Courier website and schedule a pickup. Please make sure you take a note of the “Pickup Confirmation Number” for future reference. If the driver does not show up the same day, as this might happen because of a new location, email or call us and we will assist you.

For International Customers, please include two (2) copies of the prescription and bill of lading.

Rotsaert Dental Laboratory
71 Emerald Street South
Hamilton, Ontario L8N 2V4
Tel: (905) 527-1422 | Fax: (905) 527-1048
Toll-free: 1-800-263-2113

Posted in Education | Comments Off on Send Us Your Case

The Battle of File Formats: STL vs OBJ vs PLY

Humans have been storing information ever since writing was first developed. Before the invention of 3D scanning, dentists and lab technicians would store physical models and paper files in cabinets. However, information storage is now in a digital stage so rather than cabinets, we use computers. File formats are used to encode information to store data on a computer and programs need to recognize and access the file format in order to use the data.

With regard to impressions, the most basic feature of files formats is that they encode a 3D model’s geometry. There are three ways to do so: approximate mesh, precise mesh, and constructive solid geometry (CSG).

For 3D printing, approximate mesh is used because printers are unable to print in too high a resolution and the other ways to encode geometry are unnecessary for 3D printing. Approximate mesh uses tessellation which is the process of tiling a surface of an object with geometric shapes. The tiling produces no overlaps or gaps. With this process, it is possible to store the appearance of the model and other details such as color or texture. In 3D printing, the file is usually generated by CAD, which is then later processed by CAM, creating the CAD/CAM system.

So, this brings us to the three file formats commonly used in 3D printing: STL, OBJ, and PLY.

The most common file format that uses approximate mesh – and for 3D printing in general – is the STL file. In STL files, the tiles used are triangles (called facets), which cover the surface of the 2D shape. There are several advantages to using STL over other file formats. First, as it is universally recognized and most commonly used, collaboration is made easier. STL files are also simple and small, which makes processing them faster.

However, STL files have a large downfall. As tessellation only covers the surface, the files encode for surface geometry with no representation of color or texture. If you only want a single color or texture – which is most often the case – then STL files are great but with improved printers and the demand for color, other formats are increasing in popularity. Another issue with STL files is resolution. Retaining high resolution or encoding larger-sized objects requires more triangles, resulting in larger file sizes. The larger the file size, the longer it takes to process them.

The next two file formats, OBJ and PLY, were created to make up for what STL files lack. Both can store properties such as color and texture. While not as widespread as STL files, both OBJ and PLY are well-known and widely used for their ability to store color and texture along with other details. Both files benefit from improved 3D printers and are viewed as having more relevance into the future than STL files.

In the end, is one file format better than the other? It mainly depends on your needs and situation. However, one thing is for sure – 3D printers will continue to improve and so will file formats.


Posted in Dental Technology | Leave a comment