title: Severe bone resorption in expanded polytetrafluoroethylene chin augmentation.
abstract: Expanded polytetrafluoroethylene implant is usually considered as a wonderful implant for chin cosmetic augmentation with no or less bone resorption compared with solid silicone implant. However, one severe bony erosion in expanded polytetrafluoroethylene chin augmentation was found in our clinical work. We consider that the possible reason about severe bone resorption in such situation is most relative to the mentalis muscle hyperactivity, rather than the kinds of materials. We also strongly advise that genioplasty is suitable for the cases with mentalis muscle hyperactivity caused by a dentofacial deformity.
authors.affiliation: From the Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Zhang
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Tang
mesh_terms: D000328:Adult; D001862:Bone Resorption / Q000209:etiology* / Q000503:physiopathology; D002680:Chin / Q000601:surgery*; D005260:Female; D063172:Genioplasty / Q000009:adverse effects*; D006801:Humans; D008341:Mandibular Prosthesis / Q000009:adverse effects*; D009119:Muscle Contraction / Q000502:physiology; D011138:Polytetrafluoroethylene / Q000009:adverse effects*
chemical_list: D011138:Polytetrafluoroethylene