Int J Stomatol

Inter J Stomatol ›› 2015, Vol. 42 ›› Issue (4): 426-429.doi: 10.7518/gjkq.2015.04.013

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Clinical study of traction preservation of maxillary anterior teeth residual root with microscrew anchorage

Wen Xingtao1, Ren Bolin1, Bao Lina2, Li Dongjian1   

  1. 1. Dept. of Orthodontics, Liwan District Stomatological Hospital, Guangzhou 510145, China; 2. Dept. of Orthodontics, Panyu Branch, Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou 511400, China
  • Online:2015-07-01 Published:2015-07-01

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Abstract:

Objective To evaluate the effect of orthodontic extrusion with microscrew anchorage in the repair of reexposed subgingival residual root. Methods A total of 18 cases of anterior teeth with crown fracture, 10 cases of anterior teeth, and 8 cases of premolar were chosen. Two parallel microimplants were implanted near the traction dental implant, with resin-bonded brackets. Segmental arch is fixed on the bracket and traction of subgingival residual root. Results The broken end of all teeth reached a gingival margin of 1 mm. The distance of the occlusion to the mobile was 2.8 mm to 4.3 mm. Among 18 patients, 15 cases were qualified, and 3 cases of prosthesis were unqualified. Conclusion Orthodontic traction with microscrew anchorage has good effect on the repair of under-the-gum residual root. The greatest advantage of this method is that it does not need to use adjacent teeth or antagonistic teeth as anchorage, thus effectively avoiding the side effects of anti-tooth displacement or loss of anchorage support.

Key words: subgingival residual root, microscrew anchorage, orthodontic extrusion, post crown


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