Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Temporomandibular joint dysfunction and orthognathic surgery: a retrospective study | Dujoncquoy et al. Head Face Medicine 2010 6 27 http content 6 1 27 HEAD FACE MEDICINE RESEARCH Open Access Temporomandibular joint dysfunction and orthognathic surgery a retrospective study 1 1 1 2 Jean-Pascal Dujoncquoy Joel Ferri Gwenael Raoul Johannes Kleinheinz Abstract Background Relations between maxillo-mandibular deformities and TMJ disorders have been the object of different studies in medical literature and there are various opinions concerning the alteration of TMJ dysfunction after orthognathic surgery. The purpose of the present study was to evaluate TMJ disorders changes before and after orthognathic surgery and to assess the risk of creating new TMJ symptoms on asymptomatic patients. Methods A questionnaire was sent to 176 patients operated at the Maxillo-Facial Service of the Lille s 2 Universitary Hospital Center Chairman Pr Joel Ferri from to . 57 patients 35 females and 22 males age range from 16 to 65 years old filled the questionnaire. The prevalence and the results on pain sounds clicking joint locking limited mouth opening and tenseness were evaluated comparing different subgroups of patients. Results TMJ symptoms were significantly reduced after treatment for patients with pre-operative symptoms. The overall subjective treatment outcome was improvement for of patients no change for of patients and an increase of symptoms for of them. Thus most patients were very satisfied with the results. However the appearance of new onset of TMJ symptoms is common. There was no statistical difference in the prevalence of preoperative TMJ symptoms and on postoperative results in class II compared to class III patients. Conclusions These observations demonstrate that there is a high prevalence of TMJ disorders in dysgnathic patients most of patients with preoperative TMJ signs and symptoms can improve TMJ dysfunction and pain levels can be reduced by orthognathic treatment a percentage of dysgnathic .
