Before preparing anterior teeth for veneers, we evaluate enamel, tooth position, smile proportions, gingival health, and the restorative materials we intend to use.

But how often are we examining the joints and muscles that control the movements of those teeth?

A patient may present with no significant pain and still have functional findings that deserve attention before we change their anterior guidance.

Why TMJ Screening Matters Before Cosmetic Dentistry

Veneers do more than change tooth shape. When we modify incisal edges, overbite, overjet, or lingual contours, we may also change how the mandible moves and closes.

In a stable masticatory system, these changes are often well tolerated. In a patient whose joints or muscles are already compensating, they may introduce additional functional demands.

The goal of screening is not to diagnose every patient with TMD. It is to recognize when further examination is necessary before irreversible treatment.

Six Findings I Look For Before Anterior Restorations

1. Joint clicking. A reproducible click may be associated with disc displacement with reduction. Many clicking joints remain stable and painless, but a recent or painful click, particularly with intermittent locking, deserves investigation.

2. Deviation or deflection during opening. Watch the opening path. Does the mandible deviate and return to the midline, or does it deflect and remain to one side? These patterns may indicate unequal movement or restriction.

3. Limited opening or locking. A patient reporting intermittent locking, restricted opening, or difficulty opening fully needs further assessment before extensive elective treatment.

4. Muscle tenderness or hypertrophy. Tender masseter or temporalis muscles, particularly alongside significant wear, may indicate a high-load functional environment.

5. Radiographic abnormalities. Condylar flattening, asymmetry, or suspected degenerative changes on a panoramic radiograph should be interpreted alongside clinical findings. Further imaging may be necessary when it will change management.

6. Repeated restorative failure or severe wear. Fractured ceramics, worn incisal edges, and recurrent debonding provide important information about the mechanical history of the dentition.

A Screening Finding Is Not a Diagnosis

I want to emphasize this distinction because it changes clinical decision-making.

A painless, longstanding click does not automatically require treatment. Similarly, a posteriorly positioned condyle does not independently establish disc displacement.

The examination must connect the patient's symptoms, opening pattern, muscle findings, wear, and joint history. The validated DC/TMD framework provides useful methods for this assessment [1].

If a patient has painful locking, unexplained limited opening, or progressive bite changes, I want to understand those findings before preparing anterior teeth.

A few additional minutes of examination may reveal a problem that changes the entire restorative plan.

For a deeper explanation, read my full article, Cosmetic Dentistry on an Unstable Foundation, where I discuss these warning signs, condylar position, and imaging selection.

Develop a More Complete Examination

In Hands-On Level 1: Screening, Examination, and Diagnosis, we work through the clinical examination and diagnostic reasoning needed to recognize these findings.

Level 2: Occlusion and Treatment Planning builds on that foundation by connecting functional findings to treatment decisions.

Explore Hands-On Level 1 | Explore Hands-On Level 2

References

1. Schiffman E, et al. Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). J Oral Facial Pain Headache. 2014;28(1):6–27.

2. Naeije M, et al. Disc displacement within the human temporomandibular joint. J Oral Rehabil. 2013;40(2):139–158.

3. Mallya SM, et al. Recommendations for imaging of the temporomandibular joint. Oral Surg Oral Med Oral Pathol Oral Radiol. 2022;134(5):639–648.