Objective: To study the effects of jaw advancement in treating micromandibular deformity associated with obstructive sleep apnea syndrome (OSAS) by ramus osteotomy and genioplasty.
Methods: From April 1998 to February 2002, 12 patients with micromandibular deformity associated with OSAS (aged 14-36 years, 7 females and 5 males) were treated. Invert "L" shape ramus osteotomy and inverted replantation of posterior segment of ramus were performed to reconstruct the TMJ with the jaw advancement and genioplasty at the same time in 7 cases; mandibular angle osteotomy, bone grafts and genioplasty in 3 cases; and the jaw advancement by ramus sagittal osteotomy and genioplasty in 2 cases of the first branchial arch syndrome.
Results: The follow-up period was 6 months to 4 years. All the patients gained good appearance and had the distance of opening movement over 3.0 cm. Micromandible and facial asymmetries were corrected satisfactorily. The ratio of SaO2 was ascended from 82%-92% (preoperation) to 97%-99% (postoperation). OSAS was relieved.
Conclusion: The jaw advancement by ramus osteotomy and genioplasty for treating micromandibular deformity associated with OSAS can correct the maxillofacial deformities and enlarge the upper airway space to relieve OSAS. This method has achieved satisfactory result.
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Zhonghua Yi Xue Yi Chuan Xue Za Zhi
July 2022
Genetic and Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China.
Objective: To carry out genetic analysis for a family with a fetus manifesting micrognathia and a previous history for fetal micromandibular deformity.
Methods: Systematic ultrasound examination was carried out for the fetus, and the prenatal and postnatal phenotype of the first fetus were retrospectively analyzed. The fetus and his parents were subjected to whole exome sequencing (WES) to identify potential pathogenic variants.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
November 2003
Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Nanyang, Nanyang, Henan, P. R. China 473013.
Objective: To study the effects of jaw advancement in treating micromandibular deformity associated with obstructive sleep apnea syndrome (OSAS) by ramus osteotomy and genioplasty.
Methods: From April 1998 to February 2002, 12 patients with micromandibular deformity associated with OSAS (aged 14-36 years, 7 females and 5 males) were treated. Invert "L" shape ramus osteotomy and inverted replantation of posterior segment of ramus were performed to reconstruct the TMJ with the jaw advancement and genioplasty at the same time in 7 cases; mandibular angle osteotomy, bone grafts and genioplasty in 3 cases; and the jaw advancement by ramus sagittal osteotomy and genioplasty in 2 cases of the first branchial arch syndrome.
Chin J Dent Res
December 1999
Department of Oral and Maxillofacial Surgery, School of Stomatology, Shanghai Second Medical University (SSMU), P. R. China.
Objective: To evaluate the results of distraction osteogenesis for correcting the micromandible with an intraoral device.
Materials And Methods: Eight cases of micromandible resulting from temporomandibular joint (TMJ) ankylosis and first and second branchial arch syndrome received treatment by distraction osteogenesis. Subjects included 5 females and 3 males, ranging in age from 10 to 43 years (avg 20.
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