Effect of extraction and non-extraction treatment on frontal smiling esthetics: a meta-analysis

Abstract

Abstract: PURPOSE: To evaluate the effectiveness of tooth extraction and non-extraction orthodontic treatment on frontal smiling esthetics. METHODS: A literature research was performed using Wanfang database, Chinese Biological Literature database, China National Knowledge Infrastructure, Chinese Scientific Journals Database of VIP, Medline and the Cochrane Library, dating from the establishment of the databases to 31st, August, 2014. Weighted mean difference (WMD) was calculated and meta analysis was performed by Review Manager 5.2. RESULTS: A total of 8 controlled studies were included. The results of meta analysis showed no significant difference between extraction and non-extraction treatment on subjective evaluation of smile esthetics [5.74~7.05 for extraction; 5.53~7.02 for non-extraction; WMD=0.09, 95%CI (-0.28, 0.46), P=0.64], buccal corridor [0.12~0.19 for extraction; 0.11~0.18 for non-extraction; WMD=0.01, 95%CI (-0.00, 0.02), P=0.09], maxillary visual arch width [26.3~52.17 mm for extraction; 25.43~52.37mm for non-extraction; WMD=-0.13, 95%CI (-1.01, 0.75), P=0.77]and smile height [5.7~10.39mm for extraction; 5.4~9.97mm for non-extraction; WMD=0.38, 95%CI (-0.27, 1.03), P=0.25]. CONCLUSIONS: Based on the results of this meta analysis, it can’t be concluded that extraction treatment could affect the frontal smiling esthetics based on the present clinic evidences. Given the small sample size and the potential heterogeneity, more well-designed prospective studies should be performed in future.

Key words: Tooth extraction, Non-tooth extraction, Frontal smile esthetics, Meta analysisShanghai J Stomatol, 2015, 24(4):499-504.

CLC Number:

R783.5

DAI Mei-lu, XIAO Meng, YU Zhe, LIU Dong-xu. Effect of extraction and non-extraction treatment on frontal smiling esthetics: a meta-analysis[J]. Shanghai Journal of Stomatology, 2015, 24(4): 499-504.

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《上海口腔医学》刊务委员会名单（按姓氏笔画排序）
24 王仁飞 * 杭州市口腔医院院长
25 王鹏来江苏省徐州市口腔医院院长
26 孙瑛 * 安徽省合肥市口腔医院院长
27 安钢苏州市口腔医院院长
28 朱洪水 * 南昌大学口腔医学院院长
29 江银华浙江省丽水市口腔医院院长
30 许全林 * 上海市杨浦区牙病防治所所长
31 何家才安徽医科大学口腔医学院院长
32 张东升山东大学山东省立医院口腔医疗中心主任
33 李月玲上海市嘉定区牙病防治所所长
34 杨立上海市普陀区牙病防治所所长
35 邹振东上海市闵行区牙病防治所所长
36 孟箭徐州市中心医院口腔医学中心主任
37 郑苍尚深圳市第二人民医院口腔中心主任
38 姚江武厦门市口腔医院院长
39 施乐上海市静安区牙病防治所所长
40 柳忠豪 * 山东省烟台市口腔医院院长
41 段义峰泰州市口腔医院院长
42 胡勤刚南京大学医学院口腔医学院院长
43 唐丽琴无锡市口腔医院院长
44 徐欣 * 山东大学口腔医学院院长
45 徐培成 * 上海市徐汇区牙病防治所所长
46 高美琴 * 江苏省南通市口腔医院院长
47 曹新明 * 上海市口腔病防治院院长
48 麻健丰温州医学院附属口腔医院院长
49 黄桂林遵义医学院附属口腔医院院长
50 韩建国徐州医学院口腔医学院院长
51 路振富中国医科大学附属口腔医院院长
52 （ * 常务委员）