Occlusal Discrepancy Correction and Improvement in Vocal Performance: A Case Report of an Opera Singer

Abstract

Background: Dental occlusion and tooth morphology may influence oral cavity configuration, jaw position, and phonation, but their relationship with vocal performance remains insufficiently characterized. This case report describes clinical changes observed after correction of occlusal discrepancies in a professional opera singer. Case Presentation: A female opera singer in her 40s presented with occlusal discomfort, mild headaches, right shoulder stiffness, impaired sitting balance, and difficulty producing high-pitched notes. Symptoms began approximately two weeks after placement of a three-unit metal bridge in the upper right molar region. Clinical examination identified no temporomandibular joint abnormalities but revealed an anterior crossbite and minor tooth morphology irregularities, including protrusions affecting the lower left canine and lower left first molar. Intervention: Occlusal adjustment and tooth morphology refinement were performed using conventional dental assessment. The Bi-Digital O-Ring Test was used only as a supplementary clinical indicator and did not determine diagnosis or treatment independently. Results: After treatment, the patient reported improved occlusal discomfort, resolution of headaches within several days, improved right shoulder mobility, and stabilized sitting balance. She also reported easier high-pitched phonation, greater vocal stability, reduced strain, and improved resonance, with maintenance of improvements for more than two months. Conclusion: This case suggests a possible association between correction of occlusal discrepancies and improved subjective vocal performance, although causal inference cannot be established from a single case.