中国实用口腔科杂志

中国实用口腔科杂志 ›› 2012, Vol. 5 ›› Issue (08): 495-497.

• 论著 • 上一篇    下一篇

安氏Ⅱ1错牙合上颌单颌拔牙矫治前后咀嚼效率对比研究

  

  1. 广东省河源市人民医院口腔科，广东  河源   517000
  • 收稿日期:2012-04-17 修回日期:2012-07-19 出版日期:2012-08-15 发布日期:2012-09-14

  • Received:2012-04-17 Revised:2012-07-19 Online:2012-08-15 Published:2012-09-14

摘要： 目的    探讨安氏Ⅱ1错牙合上颌单颌拔牙矫治前后咀嚼效率的变化。方法    选择2006—2009年在广东省河源市人民医院口腔正畸科就诊的安氏Ⅱ1错牙合患者30例为试验组，采用过筛称重法测量治疗过程中咀嚼效率变化，同时以30名个别正常学生牙合作为对照组，比较咀嚼效率差异。结果    矫治后即刻拆除矫治器时的咀嚼效率与矫治前的差异无统计学意义（P > 0.05）；保持6个月后咀嚼效率明显提高，仅略低于对照组（P > 0.05），其与矫治后即刻相比，差异有统计学意义（P < 0.05），但与矫治前相比，差异无统计学意义（P > 0.05）。结论    上颌单颌拔牙矫治安氏Ⅱ1错牙合能改善咀嚼肌功能，经一段时间的适应后咀嚼效率接近正常牙合。

关键词: 安氏Ⅱ1错牙合, 咀嚼效率, 单颌拔牙

Abstract: Objective    To investigate the change of masticatory efficiency before and after orthodontic treatment with the single maxillary extraction. Methods    Thirty patients （15 male，15 female） were selected. Each patient was treated with the single maxillary extraction orthodontics. Masticatory efficiency （Gravimetric method） was evaluated in 30 patients before and after finishing stage，half a year after retention. Thirty subjects with individual normal occlusion who had not received orthodontic treatment served as control group. The data was analyzed using SPSS 13.0 software package. Absorbency method and weigh-in were adopted to measure the change of chewing effectiveness before and after therapy. Moreover，a total of 30 non-patients who were at the same age and had individual normal occlusion were the normal comparison group；masticatory efficiency was the criteria to compare between two groups. Results    The difference of masticatory efficiency was insignificant in the instant test after therapy and before orthodontic therapy in the treatment group（P > 0.05）. The difference of masticatory efficiency between two  groups was insignificant in the post-therpay test after six months in the treatment group（P > 0.05）. Conclusion    The masticatory efficiency of the patients after the single maxillary extraction is similar to that of the subjects with individual normal occlusion.

Key words: Class Ⅱ1 malocclusion, masticatory efficiency, single maxillary extraction