Department of Orthodontics, School of Dentistry, National Taiwan University, Taipei; Department of Orthodontics, School of Dentistry, Kaohsiung Medical University, Kaohsiung; Institute of Biomechanical Engineering, National Cheng Kung University, Tainan. Received: 3 May 2002. Revised: 3 June 2002. Accepted: 9 July 2002. Reprint requests and correspondence to: Dr. Hong-Po Chang, Department of Or...

Osteogenesis imperfecta (OI) causes a variety of craniofacial changes of which skull and facial bone deformities can often be clinically observed. One such feature is mandibular prognathism, which is more frequent in OI than in a healthy population. It can result from excessive mandibular growth, surprisingly often from hypoplastic development of the maxilla, or from their combination. In OI, m...

BACKGROUND The purpose of this study was to elucidate the factors that cause facial asymmetry by comparing the characteristics of the mandibular morphology in patients with mandibular prognathism with or without facial asymmetry using three-dimensional computed tomography (3D-CT). METHODS We studied 28 mandibular prognathism patients whose menton deviated by ≥ 4 mm from the midline (FA group,...

Bilateral sagittal split ramus osteotomy is considered a standard technique in mandibular orthognathic surgeries to reduce unexpected bilateral stress in the temporomandibular joints. Unilateral sagittal split ramus osteotomy (USSO) was recently introduced to correct facial asymmetry caused by asymmetric mandibular prognathism and has shown favorable outcomes. If unilateral surgery could guaran...

BACKGROUND Mandibular prognathism is often corrected by surgical orthodontics. Correction of the sagittal facial profile has received wide attention. However, vertical changes remained undefined and thus, were investigated. METHODS Subjects included 18 patients with mandibular prognathism who had surgical correction (S group, mean age: 20.1 +/- 3.2 years) and 18 patients with Class I malocclu...

In the present study, the frontal and facial features of 112 populations from around the world are compared in terms of frontal and facial flatness measurements. Univariate analyses and canonical correlation analysis were applied to six indices representing flatness of frontal and facial bones. The deep infraglabellar notch, marked prognathism, and flat frontal bone show distinctive Australian/...

background : acromegaly, a condition which is associated with an acquired progressive disfigurement mainly involving the face and extremities, is a clinical syndrome which results from excessive production of growth hormone (gh) most commonly due to adenoma of the pituitary gland. acromegaly is a rare disease which due to its slow progression, is mostly diagnosed in late adulthood. bilateral sy...

Objective: Mandibular prognathism is inadaptability between skull and mandible and is one phenotype of class III malocculsion. Polydiastema may be present together with class III malocclusion. Skeletal class III malocclusion with mandibular prognathism can be diagnosed by cephalometric parameters. Study Design: A 22-year-old man complaining about difficult mastication and speech was referred to...

In the field of oral-maxillofacial surgery, vascular malformations present in various forms. Abnormalities in the size of the tongue by vascular malformations can cause mandibular prognathism and skeletal deformity. The risk in surgical treatment for patients with vascular malformation is high, due to bleeding from vascular lesions. We report a rare case of macroglossia that was treated by part...