Alcalde R E, Jinno T, Pogrel M A, Matsumura T
Department of Oral and Maxillofacial Surgery II, Okayama University Dental School, Japan.
J Oral Maxillofac Surg. 1998 Feb;56(2):129-34. doi: 10.1016/s0278-2391(98)90849-7.
Knowledge of the normal dentofacial patterns of adults belonging to various ethnic and age groups is important for clinical and research purposes. Lateral cephalometric standards of normal Japanese adults were developed using the Burstone and Legan comprehensive cephalometric analyses that are specific for orthognathic surgery.
Cephalometric radiographs of 217 Japanese adults were analyzed, and the mean values of their hard and soft tissue measurements were compared with those of white American adults.
Statistically significant differences were found in the Japanese sample, who had a shorter maxilla, larger upper anterior face height, and lower posterior dental height than Burstone's white sample. A less prominent chin was observed in the Japanese male group. Soft tissue analysis of the Japanese subjects showed a retrognathic maxilla and mandible in relation to the soft tissue glabella and bilabial protrusion when compared with the white adult standards.
Lateral cephalometric norms are specific for the racial group, but these values should not be interpreted as treatment goals. Normative data represents an aid for the diagnosis and treatment planning of orthognathic surgery according to the needs and expectations of each individual patient.
了解不同种族和年龄组成年人的正常牙颌面形态对于临床和研究目的而言至关重要。采用正颌外科专用的Burstone和Legan综合头影测量分析法制定了日本正常成年人的侧位头影测量标准。
分析了217名日本成年人的头影测量X线片,并将其硬组织和软组织测量的平均值与美国白人成年人的进行比较。
在日本样本中发现了统计学上的显著差异,与Burstone的白人样本相比,日本样本的上颌较短、上前部面高较大且后牙高度较低。在日本男性组中观察到下巴不太突出。与白人成年人标准相比,对日本受试者的软组织分析显示上颌和下颌相对于软组织眉间点和双唇前突呈后缩状态。
侧位头影测量标准因种族而异,但这些数值不应被解释为治疗目标。规范性数据有助于根据每位患者的需求和期望进行正颌外科的诊断和治疗计划。