Sahu Anshu, Lall Rajeev, Nezam Sumaiya, Singh Rajat, Kumar Shashi B, Ayub Faizan B
Department of Orthodontics and Dentofacial Orthopedics Hazaribag College of Dental Sciences & Hospital, Hazaribagh Jharkhand, India, Phone: +919431107576, e-mail:
Department of Orthodontics and Dentofacial Orthopedics Hazaribag College of Dental Sciences & Hospital, Hazaribagh Jharkhand, India.
J Contemp Dent Pract. 2018 Jun 1;19(6):712-718.
The study was conducted to assess facial asymmetry in various dental malocclusions and to determine asymmetry in lower, mid, and upper face and jaws using posteroanterior cephalometric analysis.
Overall, 120 posteroanterior cepha-lograms were taken of individuals between 12 and 25 years of both sexes, and were divided into four groups: Angle's class I excellent occlusion, Angle's class I malocclusion, Angle's class II malocclusion, and Angle's class III malocclusion. These cepha-lograms were traced and Grummon's analysis was performed.
In Angle's class I occlusion and Angle's class II malocclusion, the results obtained showed asymmetry present in the upper face. Correlation was found between occlusion, maloc-clusion, and facial asymmetry.
Facial asymmetry was found in all dental occlusions whether excellent or malocclusion group, with maximum asymmetry having upward trend toward upper face starting from lower.
For the success of the orthodontic treatments in various types of malocclusion and to determine the facial asymmetry, posteroanterior view can be very helpful, as it gives additional information which can be utilized to augment treatment planning and improve prognosis in terms of relapse prevention.
本研究旨在评估各类牙颌面畸形中的面部不对称情况,并通过后前位头影测量分析确定下、中、上面部及颌骨的不对称情况。
总共对12至25岁的120名男女个体拍摄了后前位头影测量片,并将其分为四组:安氏I类理想咬合、安氏I类错 、安氏II类错 和安氏III类错 。对这些头影测量片进行描图并进行格鲁蒙分析。
在安氏I类咬合和安氏II类错 中,所得结果显示上半面部存在不对称。发现咬合、错 和面部不对称之间存在相关性。
在所有牙列咬合情况中,无论是理想咬合组还是错 组,均发现面部不对称,且最大不对称程度从下部开始向上半面部呈上升趋势。
对于各类错 的正畸治疗成功以及确定面部不对称情况而言,后前位片可能非常有帮助,因为它能提供额外信息,可用于完善治疗计划并在预防复发方面改善预后。