My patient wasn’t satisfied with the esthetics and feel of her previous restoration. Detailed planning enabled me to deliver a beautiful, functional result. Here is the conclusion of this case and placement of the new six unit anterior bridge:

Failed Restoration: Provisional

After the treatment planning was completed, I removed the patient’s existing anterior bridge and replaced it with a bisacryl provisional derived from the orthodontic wax-up. I sectioned it specifically to enable tooth movement while I restored the pontic sites. This meant sectioning between the maxillary central, the upper left lateral and central, and the upper right canine and lateral.

I then cemented the provisional with Rely-X luting cement. Doing so decreased displacement secondary to the orthodontic forces. Next, the patient went through orthodontic therapy over three months. Following this, she was ready for periodontal surgery. Crown lengthening was done on the upper right canine, in addition to placing connective tissue grafts in the pontic sites. This ensured ovate pontics could develop.

Failed Restoration: Equilibration & Placement

Equilibration was the natural next step. It was used to achieve the necessary anterior guidance with posterior disclusion, as well as freedom in the anterior and no centric occlusion slide to maximum intercuspal position.

I prepped off the orthodontic provisional and refined the preparation. For the margin design, I went with a shoulder and rounded internal line. This could accommodate the all-porcelain restorations.

We weren’t worried about the reduction of 1.5 mm because of the original tooth reduction, but we did go forward with placement of a third plane of reduction. This was necessary for final incisal edge placement in a AP dimension.

Venus from Hereaus was used to create the six unit provisional from upper right to upper left canine. This also allowed tissue development to occur in the pontic sites.

After taking final impressions three months later, the six unit bridge was made using E.max. I placed the patient’s direct composite veneers on the upper first molars and bicuspids. Shade matching to the anterior bridge was one advantage of this approach. Also, the patient could choose to move to porcelain at some point in the future.

My patient was finally happy with her smile. All in all, it took dedicated teamwork between myself, the ceramist, orthodontist, and periodontist to exceed her expectations. 

Replacing a failed restoration starts with a careful examination of the patient’s needs, desires, and current oral health. My patient in this case presented with a six unit anterior bridge, decay, and many esthetic issues. After an esthetic evaluation and comprehensive exam, it was time to move on to treatment planning.

Failed Restoration: Treatment Plan

To treatment plan this case, I relied on an advanced facially-generated treatment planning system for communicating with the rest of the team. Communication is essential to a reliable outcome.

First, a diagnostic work-up was generated. Then, the interdisciplinary team together developed a final treatment plan and sequence, with the incisal edge position of the upper right central as reference.

We chose orthodontic extrusion of the upper teeth to handle proclination in the anterior and the gingival discrepancy. Additionally, we treatment panned the maxillary right canine for over-extrusion by 2 mm. This was done to achieve adequate restorative ferrule through crown lengthening, not to mention re-treatment endodontic therapy with post and core.

We talked about implant therapy, but ultimately it was not a workable solution. Root proximity on the upper right and the gingival tissues meant it wasn’t ideal as a first option. For the final treatment, we decided on placing a six unit anterior bridge. I then discussed the outcome with the patient and she decided conservative therapy for the posterior esthetics of direct composite veneers was best. This enabled us to create consistent contour and shade.

Next up was the lab, which made a pre-orthodontic wax-up based on periodontal surgery and planned tooth movement. I gave them the proper information by using PowerPoint and digital photography with the proposed tooth positions. After this, the post and core endodontic re-treatment was done for the upper right canine.

To be continued…

What’s your approach to treatment planning? 

A comprehensive exam is the first step in a long line of decisions that can end in case success or failure. For this case, my patient presented with a litany of problems and dental concerns.

Failed Restoration: Patient History

When I first encountered the patient, she had a six unit anterior bridge with temporary cement. She came to my practice because she was unhappy with how her dental work looked and was interested in a permanent restoration that would truly suit her goals.

She had a checkered dental history beginning with orthodontic treatment for a diastema between the maxillary centrals and a left maxillary lateral that fractured down to the root and had to be removed. After a FPD was placed for the tooth removal, her diastema reopened and the right maxillary was also lost to fracture.

That wasn’t even it for the patient’s woes. She was given a bridge that made her very unhappy and also had to have endodontic therapy on the upper right canine. Despite multiple placements, the restoration was never to her liking.

Esthetically, the patient wanted to remedy her uneven gingival margin, the length of the upper right canine, the relative size of laterals and centrals, and the color match. The latter was difficult to remedy because of tetracycline staining from her childhood. Finally, she was also displeased with the thick feeling of the bridge.

All of this together painted a picture of a patient in need of serious help.

Failed Restoration: Evaluation & Exam

My esthetic evaluation confirmed many of her concerns. I completed it intraorally and with diagnostic photographs. The patient presented with tooth proportion asymmetries, inadequate tooth display at rest on one central, an uneven incisal plane, and gingival discrepancies.

Her comprehensive exam revealed normal TMD joints, but also showed posterior wear. She had muscle pain and headaches yet no muscle tenderness. I put her on six weeks of appliance therapy, which led to the discovery that she had a habit of ‘power wiggling.’ I was then able to obtain an accurate centric relation bite record.

I removed the anterior bridge for radiography of the abutments. It became clear that her maxillary right canine had a lot of decay and inadequate ferrule.

To be continued…

A patient presented to my practice with upper and lower implant hybrids and a long history of fracturing. I myself struggled with needing to replace her dentures regularly up until the point I decided something had to change.

Parafunction, Occlusion, and a Low Smile Line

The patient clearly needed some type of intervention. I looked at mounted models and evaluated her history of extreme parafunction to determine what we should do next. She had been restored in her hybrids with canine guidance and relatively steep anterior guidance. In light of all these factors, I recommended resetting the upper hybrid, opening her vertical, and both shallowing and balancing her occlusion.

These adjustments would hopefully make a big difference in her ability to maintain dentures for longer periods of time. There wasn’t much space to open vertical, but with the little we had we managed to lengthen the time between fractures from months up to once a year. That was a huge achievement on its own, but we knew we could do more. We had also made her an occlusal appliance that went over her upper hybrid. She consistently wore it, which was beneficial.

I shared this story with Wiand of Wiand lab and he was able to give me an important breakthrough. He asked me how high her smile line was and I told him it was very low. He had an idea that made all the difference. We took upper and lower impressions of the hybrids, bite records, facebow, fixture level impression on the upper arch, and gathered shade information.

Wiand lab removed everything from the original bar. Then, I had them send the entire case to Gold Dust Dental Lab. There, they waxed the upper to full contour over the bar. After this, the case was returned to Wiand, where an injection-molded composite was used to fabricate a one-piece upper over the patient’s original bar.

This seems to have finally done it for keeping my patient out of the dental chair. No maintenance has been necessary since. By relying on the advice of my fantastic partners in both dental labs, I was able to help a tricky patient. The lesson here is that patients who are hard on their teeth will be hard on restorations. Similarly, implants aren’t going to magically resolve issues for occlusally high-risk patients.

It’s impossible to go through a dental career without continuously encountering cases that challenge our clinical skills. Nor do I think that would be a good thing, as stagnation and complacency can lead down a slippery path to less optimal dental care. Even an expert has something more to learn.

The case I’m going to discuss here is a perfect example of why collaboration is so important in the dental practice. No matter how much I think I know about the techniques for tricky restorations, I’m always surprised by how much there truly is left to understand or adjust.

It’s important to rely on our peers and lab partners for case breakthroughs and insights. They can see things from a different perspective and give you exactly what you need to provide an exceptional outcome for patients. Even just the act of talking through impressions on a patient’s circumstances can lead to unexpected realizations.

A Case of Fracture, Wear, and Parafunction

This case frustrated me for quite a while before I understood how to solve it. The patient presented with upper and lower implant hybrids from another dentist. An examination revealed the problem she had visited my office for, which was fracturing of the upper right lateral denture tooth.

She was no stranger to the irritation of fractures. She shared with me that she had a long history of wearing down and fracturing her teeth. I was immediately interested in taking the time to understand the cause of this consistent fracturing.

The patient had multiple single unit implants placed for replacement of individual teeth. Her condition then worsened to the point where she had her remaining teeth removed. Implants were used for dentures with locator attachments, but this didn’t last long. The problem persisted and resulted in the need for more implant placements.

Upper and lower hybrids were created, yet still she went through 4-5 replacements of upper lateral and canine denture teeth. After seeing me, she and I had to replace upper anterior denture teeth several times over the course of a year. That meant removing the hybrid and replacing the screws each time.

To be continued …

During an occlusion-focused hygiene exam, there are certain things the hygienist should pinpoint. This will help them develop a deeper relationship with the patient as well.

A Hygiene + Occlusion Exam

What the hygienist should look for:

1. “Can you eat/drink cold things comfortably?”
2. Subtle wear facets – those shiny spots on the edges of teeth.
3. Chipping of the edges of teeth. Can you get the patient to line up an incisal “chip” with a sharp edge of a lower front tooth?
4. Fremitis – that subtle shimmying of an upper front tooth when you gently place your fingernail on the facial of a maxillary incisor and ask the patient to grind side-to-side and front-to-back.
5. NCCL – could that be from clenching or orthodontic expansion? Both/and?
6. Persistent marginal inflammation that could be a sign of clenching (or an imbalanced bite).

The hygienist’s role is to raise patient awareness –  to “discover” changes that can be brought to the doctor’s attention for long-term protection of the patient’s teeth.

The doctor’s arrival for an exam is the time that real skill and teamwork begins. The hygienist takes the lead and informs the doctor what they (hygienist and patient together) have been discovering/discussing.

Many times, the most significant questions come when I am behind and feeling rushed. Our goal, practiced for years, is for me to get in and out of the hygiene room in under 5 minutes. Therefore, our total goal together is to encourage the patient to schedule another appointment for a more thorough evaluation of any changes/discoveries.

The hygienist then supports and reassures the patient about the need for a more thorough understanding to protect their teeth and eating for a lifetime. They confirm the uniqueness of a full understanding of teeth, harmonizing bite forces, and oral-systemic health and well-being.

“This is what sets our office apart. Together we strive for the best in your total oral health prevention.”

A well-thought-out and choreographed hygiene appointment can truly establish you in the relationship-based sector of dental care.

Dentistry is rapidly segmenting into two distinct professions.

One will be what most patients think of as traditional dentistry. The tooth fixer and cleaner. The technician. These dental offices will focus on bits and pieces of treatment to get full insurance dollars from each patient each year. The staff will likely also be fragmented by tasks.

The other profession will be the doctor of the oral-health system. The valued family advisor on health and wellness. As Pankey-trained dental offices, we are well positioned to become the relationship-based advocates for our patients’ health.

Training Your Team to Advocate for Patient Health

How about your team? Have you put in the time to train and behaviorally change your most valued support?

A most important person in that team approach is the hygienist. Are they having conversations about total health? Social conversations don’t lead to behavior change that improves the health awareness of our valued patients.

Again, as Pankey-trained dentists, our hygienists can have a huge impact on our patients’ perception of our unique thoroughness. Occlusal awareness should be part of hygiene discovery about their health.

Bringing Up Occlusion in the Hygiene Appointment

This can involve simple questions: What have you been noticing about your bite? Chewing? Jaw? Headaches? “What have you been noticing about [fill in the blank]…?” can begin a discussion.

Depending on the conversation, one can follow with: “We are noticing that, as people live longer (keep their teeth longer), we see things slowly develop that can lead to big concerns. In our office, our purpose is unique – we want you to be able to enjoy eating all the foods you love the remainder of your life. I will look at potentially traumatic bite forces for you.”

How do you introduce occlusion in your hygiene exams? Let us know in the comments! 

When a patient has periodontitis, they suffer from a destructive inflammatory infection that significantly impacts their oral health and damages their periodontal structures. Understanding how occlusion impacts or worsens this damage is key to helping these patients prevent unnecessary trauma.

Periodontitis and Occlusal Trauma

Even before the 1960s, there was research linking occlusal trauma and progression of periodontal disease. More recent research has found that this link isn’t as strong as once thought. Still, a relationship has been identified between the extent of damage and whether the patient has an occlusal interference.

One crucial aspect of periodontitis is that it is unique to every patient. This means we have to be careful not to apply a blanket approach to all patients or rely too heavily on past data that may not help us treat our current patient. Their individual susceptibility to periodontitis must be assessed based on their distinct risk factors.

The Relationship Between Occlusion and The Periodontium

For each tooth, occlusal experience matters and may be one of the reasons that loss of attachment worsens. A 2001 study by Harrel and Nunn found that there was a correlation between amount of periodontal damage and existence of occlusal interference. Perhaps more interesting, they also found that changing the occlusion had a positive impact on the periodontal issue.

Even in light of this research, the relationship between occlusion and periodontium is hotly contested. Regardless of one’s opinion on this matter, there’s no denying that the periodontium is effected by occlusal force. When there is no occlusal loading, there may be over-eruption or drifting of the tooth. On the other hand, when the force is appropriate, the periodontium is healthy and stable.

We must remember that there is a spectrum of susceptibility to periodontitis. For those who are very susceptible and also have teeth experiencing occlusal trauma, the latter only serves to worsen the situation.

Current digital splint technology requires workarounds to make it a feasible option for clinically exceptional dentistry. In Part 1 of this series, I described the challenges and opportunities of digital dental technology and explained some details of my preferred protocol. Here, I continue this explanation:

An Effective Digital Splints Protocol

In my practice, I mount digitally printed models using a centric relation record and a protrusive record for condylar inclination adjustments. This is just like we have done in the past with stone models. 

The lab technician can transfer this into the computer exactly as we have it in our hands. They do this with the use of a tabletop scanner. It’s important to note that the technician can now register original files for the impressions into position for the best accuracy. The greatest benefit today is the accuracy of these original scans (20-30 microns). 

The design portion comes next in this process. Communication with the technician can be done in real time online. My technician and I have been working with different settings in the software that give me the best chance of skipping the reline procedure patients don’t enjoy. 

I can also evaluate and do final adjustments on the mounted digital models and analog articulator. We have been successful about 80% of the time getting a splint that is rock solid and has an intimate fit on the occlusal surfaces. This is critical for fine-tuning adjustments and fracture resistance. 

If it ends up as an ill-fitting or loose-fitting splint, we can still reline just like we always have because it is a milled PMMA material (as dense as a denture tooth). 

Areas of Improvement for Digital Splints

My opinion at this time on digital splints is mixed:

Pro: We can produce a very high quality PMMA splint that lasts longer and generally gives the patient a better experience.

Con: We still need digital counterparts to essential analog skills that provide for all situations. 

Pro: I believe we will have printed materials that outperform current milled materials in the near future (this will lower the cost to produce splints). 

Con: It is frustrating that we are not getting better support from companies selling us  expensive equipment.

I am proud to be part of the Pankey family because our community encourages the use of technology to enhance good dentistry.