牙弓横向宽度不足的测量分析进展

Measurement Progress of Dental Transverse Width Deficiency

牙弓横向宽度不足是临床正畸常见问题,许多原因可导致这一错牙合,如侏儒症、佝偻病、垂体前叶功能不足等全身性因素,或者小舌症、口呼吸等口腔颌面部局部因素。牙弓横向宽度不足会对口k系统产生不良作用,对于错牙合畸形的治疗,一般首先要矫治横向宽度不足,因此,它的诊断分析尤为重要。临床上常用的测量方法有模型测量、X线片测量、Pont测量分析等。近年来,随着三维数字化技术的不断发展,CBCT、磁共振成像、3Shape数字化扫描等实现了牙列及颌骨三维重建及测量,本文就横向宽度不足的测量分析方法及新进展综述如下。

Dental transverse width deficiency is a common clinical problem in orthodontics.Many reasons can cause this malocclusion,systemic factors such as dwarfism,rickets,and anterior pituitary insufficiency,.maxillofacial local factors such as small tongue disease and mouth breathing.Dental transverse width deficiency has negative effect on the oral system.For the treatment of malocclusion,the dental transverse width deficiency should be corrected priority,so its diagnostic analysis is particularly important.The commonly used diagnostic methods in clinic include model measurement and X-ray film measurement、Pont,s analysis.In recent years,with the development of 3D digital technology,CBCT,MRI,3Shape digital scanning have achieved three-dimensional reconstruction and measurement of dentition and jaw bones,some new technologies and methods appear.In this review,the progress of measurement and diagnosis in recent years is summarized.