CEREC Doctors

Blog Author: Steven Hernandez

22 Aug 2019

Posted by Steven Hernandez on August 22nd, 2019 at 07:59 am
View Comments (22)


Richard has been a patient of mine for the last eight years. He’s 32 years old, single, and an overall great guy. Earlier this year he made a consultation appointment for his front teeth to discuss veneers. When we finally sat down, I asked him what made him decide to move forward with this treatment.  He mentioned that he was tired of being single and knew that he needed to do something about his smile if he wanted to feel confident enough to enter the dating scene and find a life-long partner.

embedded imageembedded image

We had a lengthy conversation about what he wanted to be sure I could meet his desire. His request was simple: make is teeth white. Overall, the position of the teeth was good; no ortho or soft-tissue treatment was required. As this was a straightforward case and the patient wished to begin treatment as soon as possible, I elected to begin without a wax-up. While this is not my normal protocol, I felt confident I could deliver and the patient would be happy.  A pre-op putty was taken and his teeth prepared. 

embedded image

CEREC images were captured and the putty was used to fabricate the provisionals. Even though the temps were the same shape/position prior to preparation, he was quite happy at the fact that his teeth were no longer discolored. Without a wax-up to copy, I decided to send the case to Weston Hatcher and allow him to design it. Weston and I spoke about the case and I let him know what I was looking for regarding facial anatomy (minimal to none), embrasures, etc. The final design was emailed back to me a few days later and the restorations were milled in-office.

embedded image

After the congratulations, handshakes, and hugs, I walked him to the front door. When he walked outside, he raised his hands in the air Rocky Balboa style and shouted, “I’m beautiful!”  Cases like these make all the tough days hard to remember. I wish the young man well in his social life with his new-found confidence.  These restorations are Emax BL4 and were hand polished only.  I chose not to add any incisal or cervical characterization as the patient’s primary desire was to have teeth that were simply one color.

embedded imageembedded image

 

22 Jul 2019

I’ve seen a few posts lately regarding the OptiSleep oral appliance and wanted to give a general overview of how to use the Sidexis software to segment the airway, import the necessary CEREC data, and ultimately order the OptiSleep device. 

Once a CBCT volume is obtained, selected the TOOLS tab and then select SICAT SUITE. 

embedded image

 

Once on the SICAT AIR page, select the ANALYZE tab.  Please note the blue, vertical arrows. The single arrow is used when you wish to segment one airway. If you wish to compare airways, perhaps after treatment with the OptiSleep, use the icon with two blue arrows.

embedded image

 

In this screen, you need to identify the patient’s airway. I selected a spot on the hard palate and double-click to begin the segmentation and then drag my cursor to the bottom left, somewhere on the patient’s spine. Again, double-click to end the segmentation and form a box denoting the patient’s airway. The software will trace out what it believes to be the airway and highlight this in yellow. Just like when we merge CEREC & CBCT data, you will need to confirm that the segmentation is correct before proceeding. If you are satisfied with the tracing, hit OK.

embedded image

 

The software will complete its calculations and you will now see a 3-D model of your patient’s airway, complete with coloring. The parameters for the colors themselves can be adjusted, but that is far beyond the scope of this post.  IMPORTANT!!  This software cannot diagnose obstructive sleep apnea. This representation is merely a conversation starter with your patient.  Only a sleep physician can diagnose your patient with obstructive sleep apnea (OSA).

embedded image

 

Moving forward…

Your patient has OSA and can be treated with an oral appliance.  Consent forms are signed, finances secured, and the patient is ready to have an OptiSleep oral appliance fabricated.

 

Full mouth CEREC images are captured, as well as a bite registration obtained using a George Gauge.

embedded image

 

The patient’s CBCT is opened, and the ORDER tab is selected. There is an icon that resembles teeth and that should be clicked to begin importing the CEREC images.

embedded image

 

Again, similar to the workflow when importing CEREC data into the Galaxis software, you will BROWSE your computer and import the correct CEREC images.

embedded image

 

Both arches will be imported.  An order will be created and placed. 

embedded image

embedded image

embedded image

I hope this helps and please remember this is a generalized overview of the process. Remember, CEREC Doctors has a wonderful seminar on Airway Prosthodontics if you’re looking to go down this path.


I've posted about this before, how CEREC can help you complete an RCT, b/u, APC in one appointment, often in under 2 hrs.  My last post on this topic only showed the before and after photo; no intermediate steps.

embedded image

In an effort to explain the process further, I performed the same treatment on tooth number 15 and took photos along the way using my Primescan.   

Pre-op radiograph. 

embedded image

Here are my steps:

  1. Anesthesia, CEREC images of opposing arch and buccal bite.  I capture the buccal bite at this stage as the patient has not lost proprioception in the area.
  2. Place IsoDry and begin preparation of the tooth. I begin with occlusal reduction and then move on to the decay.

embedded image

  1. Once I have clean margins and I’m at the pulpal floor, I placed a Tofflemire matrix. 

embedded image

  1. Build-up complete. 

embedded image

  1. Final preparation. It took me 25 minutes from the time I picked up the handpiece to this point. 

embedded image

  1. CEREC images are captured and I have a second assistant design, mill, fire the restoration while I drill through the center of the build-up & complete the RCT. 

The beauty of this approach is that simultaneous processes are occurring.  By reversing the typical RCT-crown order, I was able to complete treatment in under two hours.

embedded image 

embedded image

 

 

Side note: my CBCT allowed me to visualize the number of canals (no MB2) and and their paths prior to initiating the RCT.  I knew prior to starting that the palatal canal did not go to the apex of the root. Had I not seen this ahead of time, I may have thought my obturation was short in my final PA. The power of these technologies cannot be overstated. They have allowed me to provide better, more efficient treatment for my patients in a consistent manner that I never thought possible before.

 

06 Mar 2019


This patient was unhappy with the appearance of her teeth;  crowns on teeth #8,9 were too wide, multiple stained/failing class V resins, and wear facets. 

embedded image

A wax-up was ordered, patient viewed it, approved the design.  

embedded image

Teeth were prepared, wax of design was transferred to the teeth. Occlusion checked/adjusted.

embedded image

Patient was seen while in temporaries to check function and esthetics.  She requested changes as they appeared "too masculine."  Incisal edges were rounded and embrasures opened to soften/feminize the teeth.  Eight Empress restorations were milled and hand-polished; no glaze. Final photograph is three months post-delivery.

embedded image

 

Take Aways:  

1.  Start with a wax up.
2.  Use reduction guides to ensure that you remove enough tooth structure

3.  Have the patient 'test drive' the provisionals; use this time to evaluate esthetics and function.

4.  Once the patient is happy, simply copy what's there. All the guesswork is removed from it.

5.  Don't be afraid of using CEREC for anterior cases. Take the Level 4A hands-on workshop & see what's possible.  

23 Jan 2019

We all know CEREC is capable of producing great aesthetic results, makes restoring implants easier/faster, and can even mill surgical guides in office.  For me, one of my favorite procedures is the same day root canal, build up, and crown. I know the clinical situation doesn’t always allow it, but when it does, I find that CEREC allows me to leverage my time for both the benefit of the patient and myself.

embedded image

Last week, this patient appointed for an OB resin on tooth #30 and a root canal, build up, crown on tooth #31. The appointment was scheduled for 7 AM and the patient was out before 9. The appointment workflow looks something like this:

  1. Seat/numb patient (1 septo)
  2. Capture pre-op images of the opposing arch, BB, and mandibular arch.
  3. Use the cut tool to remove tooth #31.
  4. Deliver second carpule of anesthetic (septo)
  5. Place IsoDry. 
  6. Prepare #31.  I didn’t have to spend much time searching for the canals as the decay already involved in the pulp chamber. Also, reviewing my CBCT prior to treatment let me know exactly how many canals there were. As I know I’m doing a root canal, I don’t have to be timid about my occlusal reduction. As you can see, this is anything but a traditional prep. I would guess my prep took ~10 minutes. I don’t want to image with the pulp chamber opened, so I placed some packable resin and just took a few seconds to smooth it, simulating my core build-up (don't bond this into place).
  7. Capture CEREC images and pass the AC unit to my second assistant to design, mill, fire the restoration.
  8. Place rubber dam, remove resin in chamber, start RCT.

embedded imageembedded image

 

The RCT is relatively quick as I had already found my canals.  Also, using my CBCT to estimate canal length and an M4 handpiece making getting to length relatively easy. The crown is usually out of the oven when I’m finished and is ready for try-in. I always seat the crown and let the patient see what it looks like to get their approval.  After that, it’s prepared for bonding. The IsoDry is placed again in the crown is bonded in place. The resin on #30 can be completed at any time; before CEREC images, after bonding crown, etc.  

The power of certain comes into play in that the crown preparation is completed prior to the RCT. If I find that I can’t get the canals dry or I need a second appointment to complete the RCT for whatever reason, I will usually mill an MZ 100 and bond that in the interim.

09 Jan 2019

So we had a patient arrived today as he heard weeded we did the same day crowns. He presented with some severe perio & class III mobility on tooth number 10. Patient stated that he is a teacher, goes back to work tomorrow and couldn't as he was.  The tooth literally waved in the wind as he spoke to me. Yes, he was informed of his perio condition and the need to return for a full, comprehensive exam but he wanted his chief complaint address today. Here's his PA:

embedded image

Solid as a rock.

embedded image

embedded image

embedded image

embedded image

We took a bio copy image of the tooth, extracted # 10 and imaged the site. I milled out a CeraSmart A1 and stained the cervical using my Cosmedent kit. I’ve seen a few cases completed by Kristine Aadland and I attempted to follow her lead; I failed. However, the patient was thrilled. winking

The restoration was delivered using Variolink DC and the patient left with an appointment for a full, comprehensive exam. With the neglect I observed in his mouth, I’ll be surprised if he returns.  One can hope.  The point of my rambling is this: we have amazing technology at our fingertips. No way I could work this into an already busy schedule without CEREC. Even after 10 years, this technology still amazes me.

 

 

 

30 Aug 2018

Happens all the time.  You complete a single-central and feel you've done a great job.  Then, as many others on here do, you photograph your stellar work only to find that your "A" is more like a C+.  Statements such as, "The patient was thrilled..." can be found all throughout this site.  And while that's important, we (I feel I can speak for many here) know it's not the only factor...nor is it the most important.  Here are 2 such cases where 'the patient was thrilled' but my efforts were less than ideal.  Hopefully you'll see something that can help you in your next case and avoid these pitfalls.  

 

CASE 1:

embedded imageembedded imageembedded image

Gentleman fractures #9, implant placed.  The surgery isn't the point of this post, so we'll skip to the restorative portion.  

embedded image

Healing abutment.  I've set myself up for success.  Now I just have to not F it up.  

embedded image

Notice how 'bulbous' the restoration is?  Way too round.  I didn't take my time and contour in the mouth before delivering.  Incisal edge has no characterization and the distal incisal edge is too short.  

embedded image

Again, he's happy with it but with minor corrections, this case could have turned out much better.  

 

CASE 2:

embedded imageembedded image

PFM #8.  Pt not happy with appearance.  

embedded image

What I found as soon as I removed the crown.  Prepare tooth, blockout with Cosmedent Pink Opaque.  

embedded image

Shade, texture are ok but the distal line angle/incisal edge are too short.  Also, I could have closed the incisal embrasure a bit more btwn #8/9.  I also missed the incisal translucency present on #9; could have been corrected with some blue on the lingual of the restoration.  

 

Overall, small items...but items that were missed/are lacking nonetheless.  Thanks to those who post cases from which I have learned a lot...my hope is that I can do the same for someone else.  And if you haven't, make your way to AZ or NC for hands-on courses...you will cover this in depth.  

​Enjoy the Holiday weekend!!!


Nothing fancy here.  Typical case.  Pt appointed for #2, #3, #15 direct resins and #5 crown.  We scheduled 2 hrs and finished ahead of time; just over 1:30 (#5 Empress polish only; no oven time).  I hope the following tips help you leverage your CEREC and complete more treatment in the same amount of time.

1.  Anesthesia of upper right quad only.  Next capture pre-op images of arch as I wanted to copy the B cusp of #5.  Also image opposing arch.

embedded image

2.  Teeth #2,3 & 5 prepared.  *Note that I did not spend time restoring the molars.  As soon as the images were captured and we advanced to the model screen, anesthesia was delivered for #15.

embedded image

3.  You can use pre-op images to check your reduction if you're not using reduction burs or bite tabs.

embedded image

4.  Copy line of #5 that avoids the DO resin, hole in the occlusal surface & abfraction.  

embedded imageembedded image

5.  Initial proposal.

embedded image

6.  Overlaying images of pre-op and CEREC proposal.  

embedded image 

7.  Final design of #5 with unrestored #2,3.  

 

TIPS:

*While the CEREC was moving from AQUISITION to MODEL phase, anesthesia was delivered for #15.  No 'downtime' waiting for CEREC  to process models.

*While #5 was milling, #2, 3 were restored and #15 was prepared for a direct resin (OL).  

*Leaving #2,3 unrestored during imaging of #5 allowed me to disregard them when designing occlusal contact strength of #5 crown.  

*After restoring the molars, I could adjust the occlusion of #2,3 while #5 was milling.  Without the crown in place, I could disregard occlusion of #5 prep as there was none. 

*After delivering #5 and cleaning the area, #15 was restored.  As the upper right had already been restored/contacts adjusted and polished, I only had to concentrate on #15 when adjusting the composite.

 

Again, this isn't 'sexy,' just everyday bread and butter dentistry.  My hope is that you'll find all the little areas of 'downtime' during a crown appt and find that there is plenty of time to complete other dentistry and make the appointment more productive while not increasing chair time.  

 


Yes, it's true.  Love seeing something like this on the schedule; 18-MO, 19-MOD, 20-MOD, 21-DO.  Why?  CEREC.  Prior to having my CEREC system, a quadrant of CL II direct composites was not cause for celebration.  Why?  Because I would be tied-down to one operatory, start-to-finish, unable to do another/more profitable (and fun!) procedure.  Sorry, but tinkering with matrix bands, wedges and clamps doesn't excite me.  And sometimes, despite my best efforts, I'd remove a matrix band and find a void or open contact or...

With CEREC, my attitude (and how I approach the case) has completely changed.  Let's look at a recent case:  

 

Carmen presented with failing amalgams and interproximal decay in the LLQ; #18-MO, 20-MOD, 21-DO

embedded imageembedded image

My workflow with CEREC is fast, predicable and results in better restorations that I can provide by hand.  In this case, I designated #18 & 20 as BIOCOPY restorations using the 3M MZ100 blocks.  These blocks are resin, not porcelain.  And unlike a composite that I place in my office, these are already polymerized; no shrinkage.  The result, better fit and longer lasting.  

embedded image

I delivered anesthesia and captured BIOCOPY images.  

embedded image

I prepared both #18 and #20...initial designs.  

embedded image

Only small changes were required before both designs were complete.  To leverage my time while the restorations were milling, I prepared #21.  Once #18 & #20 were seated, I built the contact against #20.  

 

Take Homes:

1.  Don't forget about the MZ100 blocks.  I find them useful for fillings, tempoary crowns, etc.

2.  If you have an EDDA and your state allows it, have them mill/deliver the restorations.  

3.  CEREC allows you to leverage your time.  While the restorations are being designed/milled, you're free to perform other dentistry.  

 

01 Mar 2018

This past Jan, we had a new patient walk into our office.  She was distraught over a broken front tooth.  I met her and saw an existing Cantilever bridge from #6-7 with #7 completely missing. 

embedded image

She still had possession of the pontic and stated being happy with the shape/contour/esthetics of the previous restoration.  Tooth #7 was placed in the mouth and BIOCOPY images captured.  

embedded image

Anesthetic.  Preparation of #6 was completed.  Images captured.

embedded image

Final Design with BIOCOPY images confirmed a precise copy of her previous restoration.

embedded imageembedded image

The only alteration of the design was on the palatal surface of #7; occlusion/protrusive contacts with the opposing arch lead to failure (see arrow)

embedded image

Immediate delivery pic

embedded image

The pt was so happy that she took time out of her busy day to write this wonderful review.  Again, without CEREC, this final tx option wouldn't have been possible.  To date, she has referred 2 other pts to our practice.  These are the pts that you know will be with you for life.  They will be raving fans and ambassadors for your practice.  

embedded image