Journal of Prevention and Treatment for Stomatological Diseases ›› 2016, Vol. 24 ›› Issue (7): 424-427.doi: 10.12016/j.issn.2096-1456.2016.07.010

• Cinical Study • Previous Articles     Next Articles

Evaluation of the value of micro screw implant anchorage in adult patients with bimaxillary protrusion

Hong-juan HAN(),Hao WU,Xiao-hua REN,Fei HUANG   

  1. Department of Stomatology, Sichuan Medical Sciences Academy, Sichuan People’s Hospital, Chengdu 610072, China
  • Received:2015-11-21 Revised:2016-01-03 Online:2016-07-20 Published:2016-07-20
  • Contact: Hong-juan HAN E-mail:dhjh1981@163.com

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Abstract:

Objective To explore the clinical application of micro screw implant anchorage in orthodontic treatment of patients with bimaxillary protrusion.Methods A total of 62 cases of orthodontic treatment for adult patients with bimaxillary protrusion deformity were divided into micro screw implant anchorage group (group A, 27 cases) and extraoral anchorage group (group B, 35 cases) according to the different treatment methods.Results The orthodontic treatment time in group A was significantly shorter than that in group B (P < 0.05). The difference of upper lip protrusion, lower lip protrusion, upper lip-E line, lower lip-E line and lip gap before and after the treatment in group A were higher than those in group B (P < 0.05). The difference of the upper incisors protrusion, lower incisors protrusion, the upper central incisors angle, the lower central incisors angle, upper alveolar protrusion and lower alveolar protrusion before and after treatment in group A were greater than those in group B (P < 0.05). Conclusion Micro screw implant anchorage provides satisfactory antitumor effect in orthodontic treatment of patients with bimaxillary protrusion than extraoral anchorage, it is worth in the clinical application.

Key words: Micro screw, Implant anchorage, Bimaxillary protrusion, Extraoral anchorage, Adduction

CLC Number: 

  • R783.5

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组别 上唇突度 下唇突度 上唇-E线 下唇-E 线 唇间隙
A组（n = 27） 3.34 ± 0.39 2.38 ± 0.71 2.83 ± 0.71 2.08 ± 0.70 1.71 ± 0.48
B组（n = 35） 2.02 ± 0.53 1.70 ± 0.38 1.82 ± 0.44 1.59 ± 0.45 1.07 ± 0.54
t值 10.78 4.84 6.88 3.35 4.86
P值 <0.001 <0.001 <0.001 0.001 <0.001

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组别 上切牙突度（mm） 下切牙突度（mm） 上中切牙角（°） 下中切牙角（°） 上牙槽突度（mm） 下牙槽突度（mm）
A组（n = 27） 7.44 ± 0.92 5.92 ± 1.12 16.17 ± 2.20 13.02 ± 2.68 3.89 ± 0.89 2.87 ± 0.80
B组（n = 35） 4.22 ± 0.77 4.05 ± 0.71 11.01 ± 2.47 8.45 ± 1.32 1.80 ± 0.56 1.58 ± 0.48
t值 15 8.02 8.53 8.8 11.24 7.85
P值 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001

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组别 上颌突度（mm） 下颌突度（mm） SNA角（°） SNB角（°）
A组（n = 27） 0.44 ± 0.15 0.40 ± 0.11 0.93 ± 0.44 0.62 ± 0.29
B组（n = 35） 0.37 ± 0.17 0.33 ± 0.18 0.92 ± 0.38 0.69 ± 0.35
t值 1.78 1.9 0.13 -0.84
P值 0.08 0.062 0.901 0.403
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