Severe Tooth Wear From Years of Clenching and Grinding: Crown Lengthening, a Diagnostic Wax-Up, and Full-Mouth Zirconia-Ceramic Crowns

Severe tooth wear rebuilt through a planned full-mouth rehabilitation

Full-mouth rehabilitation of severely worn teeth in Washington, DC for a patient who came in because a filling on a lower left molar had fractured. This documented case at Elite Prosthetic Dentistry found generalized wear from years of clenching and grinding and a collapsed bite, and rebuilt both arches with periodontal crown lengthening, a diagnostic wax-up, and customized zirconia-ceramic crowns protected by a night guard. Treatment was planned and completed by Gerald Marlin, D.M.D., M.S.D., a prosthodontist focused on comprehensive bite rehabilitation.

The presenting condition

The patient was referred after a filling on a lower left molar fractured and needed replacement. The immediate problem was one tooth. The comprehensive examination found something much larger: severe wear throughout the entire dentition caused by years of heavy clenching and grinding. Diagnostic records, including photographs, radiographs, and a detailed clinical evaluation, showed significant loss of tooth structure and a reduced vertical dimension of occlusion, meaning the natural height of the bite had collapsed over time as the teeth shortened. The roots and supporting bone were healthy, which made reconstruction possible, but the amount of lost structure meant the teeth could not simply be crowned as they were. The patient also reported a history of snoring, and a possible sleep evaluation was discussed as part of the overall picture.

Why worn teeth need more than new crowns

Teeth worn down from grinding look like a cosmetic concern, but the effects run deeper. As the teeth shorten, the relationship between the upper and lower jaws changes, chewing function and facial support are affected, and the forces on the jaw joints and the remaining teeth are redistributed. Placing crowns on short teeth in a collapsed bite produces an unstable result: there is too little tooth to hold the crowns, and the bite that destroyed the natural teeth is still in place to destroy the new ones. Predictable rehabilitation means evaluating the remaining structure, the periodontal support, and the bite position; creating restorable tooth height where it has been lost; designing the new proportions and bite relationship before any tooth is prepared; and protecting the finished work from the habit that caused the damage. A prosthodontist plans that endpoint first and sequences the periodontal, restorative, and protective phases to serve it.

The treatment plan

With healthy roots and bone to build on, the rehabilitation was organized around re-establishing tooth structure and bite height before the final crowns were made.

The outcome

The patient’s worn dentition was transformed into a restored, balanced smile through comprehensive planning and a customized full-mouth rehabilitation. Each zirconia-ceramic crown was designed to fit the patient’s face and smile rather than simply to replace lost structure. The full-face, close-up, and retracted views at the top of this page document the result, including follow-up views at three and thirteen months showing the restorations and tissues settled into the new bite. The patient was extremely satisfied, reporting that the new restorations gave him the improved appearance and confidence he had hoped for.

Who this case may sound familiar to

This story tends to resonate with patients in a few recognizable situations:

• Your teeth have gradually become shorter and flatter and your smile shows less tooth than it used to.
• You clench or grind and you have been told your bite has collapsed or that your fillings keep breaking.
• You came in for one problem and were told the real issue is wear throughout the mouth.
• You want restorations strong enough for a grinder and designed to look natural on your face.
• You want the bite rebuilt correctly once rather than crowns replaced one at a time as they fail.

If any of those describe where you are, a consultation with Dr. Marlin can give you the diagnostic picture and the specific plan for your case.

Frequently asked questions

What does it mean when the vertical dimension of occlusion is reduced?

Vertical dimension of occlusion is the height of the bite when the teeth are together. When teeth wear down over years of grinding, that height is lost, the jaws close further than they were designed to, and chewing function, facial support, and the load on the jaw joints change. Rehabilitation restores the lost height along with the tooth structure.

Why is crown lengthening needed before crowning worn teeth?

Severely worn teeth often do not have enough height above the gum to hold a crown securely. Periodontal crown lengthening repositions the gum and bone to expose more of the tooth, creating the structure needed for predictable restorations without compromising the gum health around them.

What is a diagnostic wax-up and why does it matter in a full-mouth case?

A wax-up is a three-dimensional design of the finished teeth built on models before any treatment begins. In a full-mouth rehabilitation it defines the new tooth proportions, the bite relationship, and the esthetics, so the patient can see the plan and the laboratory fabricates the final crowns to a defined result rather than improvising tooth by tooth.

Why are zirconia-ceramic crowns used for patients who grind?

Zirconia is among the strongest crown materials available, and a zirconia-ceramic design combines that strength with a natural appearance. For a patient whose grinding wore down natural enamel, the material has to withstand the same forces, and a night guard is recommended afterward to protect the investment.

More about the work behind this case

This case combines full mouth reconstruction with zirconia-ceramic crowns to rebuild a bite collapsed by years of grinding. The sequencing reflects the practice’s philosophy on planning the endpoint first, and the crowns were fabricated with the in-house laboratory.

Elite Prosthetic Dentistry treats patients from across the DMV including Bethesda, Chevy Chase, McLean, Arlington, Potomac, and Great Falls, and from much further out for cases that warrant the trip.