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目的探究快速螺旋扩弓器扩大腭中缝在安氏Ⅲ类错颌畸形中的应用效果。方法 50例安氏Ⅲ类错颌畸形患者,随机分为参照组和研究组,每组25例。参照组患者施行直丝弓矫正治疗,研究组患者采用快速螺旋扩弓器扩大腭中缝治疗,比较两组患者的治疗效果。结果研究组治疗前颅底-上齿槽座角(SNA)(78.76±4.35)°,治疗后(81.94±3.87)°;治疗前颅底-下齿槽座角(SNB)(77.73±4.12)°,治疗后(76.24±3.97)°;治疗前上下齿槽座角(ANB)(2.56±1.74)°,治疗后(5.03±1.39)°;治疗前下颌平面角(MP-SN)(32.28±4.68)°,治疗后(35.77±4.85)°;治疗前下中切牙下颌平面角(T-MP)(91.12±6.84)°,治疗后(90.35±6.45)°;治疗前覆盖(-2.45±1.32)mm,治疗后(3.76±1.26)mm;治疗前上颌骨位置(71.23±3.45)mm,治疗后(74.34±3.29)mm;治疗前下颌骨位置(80.26±4.16)mm,治疗后(88.34±7.25)mm。参考组治疗前SNA(78.58±4.37)°,治疗后(80.48±3.46)°;治疗前SNB(77.68±4.15)°,治疗后(77.11±3.95)°;治疗前ANB(2.53±1.68)°,治疗后(4.01±1.15)°;治疗前MP-SN(32.36±4.56)°,治疗后(33.74±4.26)°;治疗前T-MP(91.28±6.37)°,治疗后(91.67±6.49)°;治疗前覆盖(-2.51±1.29)mm,治疗后(2.11±1.38)mm;治疗前上颌骨位置(71.24±3.36)mm,治疗后(73.11±3.27)mm;治疗前下颌骨位置(80.42±4.19)mm,治疗后(84.64±2.04)mm;治疗后,两组患者头影测量相关指标均明显改善,且研究组患者改善程度优于参照组,差异具有统计学意义(P<0.05)。结论快速螺旋扩弓器扩大腭中缝治疗安氏Ⅲ类错颌畸形效果显著,可明显改善面型和头影测量相关指标,值得在临床中推广使用。
Objective To explore the application of rapid spiral expansion device in expanding the palatal incision in Angle Ⅲ malocclusion. Methods Fifty patients with Malignant Group Ⅲ malocclusion were randomly divided into a reference group and a study group, with 25 cases in each group. The patients in the reference group were treated with straight wire arch correction. The patients in the study group were treated with rapid spiral expansion device to expand the palatal suture. The treatment effect was compared between the two groups. Results The study group had anterior cranial base-superior alveolar septum (SNA) (78.76 ± 4.35) ° after treatment, (81.94 ± 3.87) ° before treatment; (77.73 ± 4.12) °, after treatment (76.24 ± 3.97) °; Before and after treatment, the maxillary and alveolar seated angle (ANB) was (2.56 ± 1.74) ° after treatment and (5.03 ± 1.39) 4.68) ° after treatment, and (35.77 ± 4.85) ° after treatment. T-MP (91.12 ± 6.84) ° before and after treatment (90.35 ± 6.45) ° before treatment and (-2.45 ± 1.32) mm, after treatment (3.76 ± 1.26) mm. The position of the maxilla was (71.23 ± 3.45) mm before treatment and (74.34 ± 3.29) mm after treatment. The position of the mandible before treatment was (80.26 ± 4.16) ± 7.25) mm. The pre-treatment SNA (78.58 ± 4.37) ° and post-treatment (80.48 ± 3.46) °, SNB (77.68 ± 4.15) ° before treatment and (77.11 ± 3.95) ° before treatment, ANB MP-SN (32.36 ± 4.56) ° before treatment and (33.74 ± 4.26) ° after treatment; T-MP (91.28 ± 6.37) ° and 91.67 ± 6.49 ° before treatment (4.01 ± 1.15) (-2.51 ± 1.29) mm before treatment and (2.11 ± 1.38) mm after treatment. The maxillary position (71.24 ± 3.36) mm before treatment and after treatment (73.11 ± 3.27) mm respectively. The position of the mandible before treatment (80.42 ± 4.19) mm, after treatment (84.64 ± 2.04) mm. After treatment, the indexes of cephalometric measurement in both groups were significantly improved, and the improvement in the study group was better than the reference group, the difference was statistically significant (P <0.05). Conclusion The rapid spiral expansion of the palatal suture in treating Class Ⅲ malocervical malocclusion significant effect, can significantly improve the surface and cephalometric measurements related indicators, it is worth to promote the use of the clinic.