【摘要】 目的 分析口腔正畸患者错畸形类型和年龄构成。方法 以长沙市口腔医院收治的4865名口腔正畸病例为研究对象。按Angle分类法统计错殆类型及年龄构成。结果 错(?)类型为安氏Ⅰ类42.80％、安氏Ⅱ类38.64％、安氏Ⅲ类18.5％。年龄构成乳牙期6.45％、替牙期8.69％、恒牙期(12-18岁)66.70％、成人期(>18岁)为18.5％。结论 要求正畸治疗患者的错殆类型以安氏Ⅰ类和Ⅱ类最多,年龄构成以恒牙期为主,成人正畸患者有上升趋势。更多还原

【Abstract】 Objective To investigate the proportion of different maloulusion types and the ratio of different age group. Methods 4865 cases attending Orthodontic Department of ChangSha stomatological hospital from Jan . 1998 to Dec. 2002 were divided into four age groups: deciduous dentition group,mixed dentition, permanent dentition group (12- 18) and adult dentition group. The proportion of maloclusion types was evaluated by Angle classification. Results The proportion of 4865 cases malocclusion was respectively 42.86% (AI), 39.64% (All) and 18. 50% (AIII). The ratio of four groups was respectively 6.45%(deciduous dentition),8.69%(Mixed dentition),66. 70%(permanent dentition 12-- 18),and 18.15% (adult dintition). Conclusion The results suggested that the main malocclusion is AI and All, and that the ratio of the permanint dintition (12--18)group is most high in four groups. Adult patients had obviously increased.更多还原