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目的:评价非对称拔牙方式矫治后的牙(牙合)关系改善效果。方法:选择非对称拔牙方式矫治病例21例(G1组),对称拔牙矫治病例25例(G2组)及不拔牙矫治病例23例(G3组),对所有患者治疗前后的模型应用PAR(Peer Assessment Rating)指数进行评价,对各组治疗前后的加权PAR总分值、加权PAR总分减少值和加权PAR分值减少率及改善程度进行统计学分析。结果:治疗后加权PAR总分减少值(G1组)及(G2组)大于(G3组)(P<0.05),G1组减少值最大;三组中均无变坏或无改变病例,极大改善55例,占79.71%,改善14例,占20.29%。结论:合理运用非对称拔牙方式矫治错(牙合)畸形,同样可取得明显的改善效果。
Objective: To evaluate the effect of improving the relationship between the occlusion of teeth after asymmetrical extraction. Methods: Twenty-one patients (group G1), 25 patients (group G2) with symmetrical extraction and 23 patients without group (group G3) were treated by asymmetric extraction. PAR (Peer Assessment Rating index, the statistical analysis of the weighted PAR total score, the weighted total score of PAR reduction and weighted PAR score reduction rate and the degree of improvement before and after treatment. Results: After treatment, the reduction of weighted total score of PAR (group G1) and (group G2) was greater than that of group G3 (group G3) (P <0.05), and the decrease of group G1 was the largest. No change or no change was found in all three groups, 55 cases improved, accounting for 79.71%, 14 cases improved, accounting for 20.29%. Conclusion: The rational use of asymmetric extraction method to correct malocclusion, the same can be significantly improved.