Patient: A 61-year-old female patient complained of difficulty in mastication due to missing molars and poor esthetics. There was insufficient crown length due to severe attrition of the mandibular anterior teeth, and insufficient prosthetic space due to protrusion of the maxillary right molar, but occlusal vertical dimension was not reduced. Therefore, surgical preprosthetic treatment was performed, and function and esthetics were restored without occlusal elevation.

Discussion: Surgical crown lengthening was performed on the mandibular anterior teeth, to ensure sufficient crown length for esthetics and retention of the partial denture. In addition, the result of the maxilla being edentulous simplified the prosthetic design and made management easier.

Conclusion: Due to severe attrition and a non-vertical stop occlusion in the molars, restorative and prosthetic treatment was performed after appropriate prosthetic treatment to correct the occlusal plane and achieve the retention of the definitive prosthesis.