Aldrees Abdullah M, Shamlan Manal A
Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, PO Box 60169, Riyadh 11545, Kingdom of Saudi Arabia.
Saudi Med J. 2010 May;31(5):512-9.
To analyze the pre-treatment cephalometric features in Saudi adults with bimaxillary protrusion and to develop cephalometric standards to clarify the overall presentation of this malocclusion for clinicians.
A descriptive retrospective study was designed in which lateral cephalometric radiographs of 60 individuals with Class I skeletal and dental relationship and decreased interincisal angle were collected between June 2007 and December 2008 at the Orthodontic Clinic, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia. Radiographs were studied and compared to those of 60 individuals with similar skeletal and dental relationships, but with normal interincisal angle. The measurements were calculated electronically using Dolphin software. The data were analyzed using the t-test.
Saudi individuals with bimaxillary protrusion had a vertical skeletal pattern that is similar to that of the control group, however, they demonstrated increased procumbency of the upper and lower lips. Comparing females to males with bimaxillary protrusion revealed significant increase in male lip thickness. On the other hand, no significant difference was detected in the amount of lip protrusion between males and females.
Saudi subjects with bimaxillary protrusion demonstrated distinctive soft tissue features when compared to the control group and to other ethnic groups with bimaxillary protrusion.
分析沙特成年双颌前突患者的治疗前头影测量特征，并制定头影测量标准，以便临床医生明确这种错牙合畸形的整体表现。
设计一项描述性回顾性研究，于2007年6月至2008年12月在沙特阿拉伯利雅得国王沙特大学牙科学院正畸诊所收集60例骨骼和牙齿关系为I类且切牙间角减小的个体的头颅侧位X线片。对头影测量片进行研究，并与60例骨骼和牙齿关系相似但切牙间角正常的个体的头影测量片进行比较。使用Dolphin软件以电子方式计算测量值。采用t检验对数据进行分析。
沙特双颌前突个体的垂直骨骼型与对照组相似，然而，他们的上、下唇突度增加。比较双颌前突的女性和男性发现，男性唇厚度显著增加。另一方面，男性和女性之间的唇突量未检测到显著差异。
与对照组以及其他双颌前突的种族群体相比，沙特双颌前突受试者表现出独特的软组织特征。
