Methods A total of 32 patients(age 18～45 years,women 25,men 7)with microgenia were performed operation by endoscope-assisted a minimally intraoral straight incision with subperiosteal exposure of the mandibular mentum area.

Objective To introduce a safe and effective method to solve the double-chin deformity.

Treatment of prominent malar complex and microgenia;

Cause of microstomia and the experience of correction of microstomia;

Objective: To design and fabricate a new type of prosthesis, the collapsible maxillary complete denture with hinges, for improving the treatment of edentulous patients with microstomia.