Comparison of the intrusion effects on the maxillary incisors between implant anchorage and J-hook headgear

Toru Deguchi, Takashi Murakami, Shingo Kuroda, Toshinori Yabuuchi, Hiroshi Kamioka, Teruko Takano-Yamamoto

研究成果: Article査読

51 被引用数 (Scopus)

抄録

Introduction: Recently, miniscrews have been used to provide anchorage during orthodontic treatment, especially for incisor intrusion. Miniscrews during incisor intrusion are commonly used in implant orthodontics. Traditionally, effective incisor intrusion has been accomplished with J-hook headgear. In this study, we compared the effect of incisor intrusion, force vector, and amount of root resorption between implant orthodontics and J-hook headgear. Methods: Lateral cephalometric radiographs from 8 patients in the implant group and 10 patients in the J-hook headgear group were analyzed for incisor retraction. The estimated force vector was analyzed in the horizontal and vertical directions in both groups. Root resorption was also measured on periapical radiographs. Results: In the implant group, significant reductions in overjet, overbite, maxillary incisor to palatal plane, and maxillary incisor to upper lip were observed after intrusion of the incisors. In the J-hook headgear group, significant reductions in overjet, overbite, maxillary incisor to upper lip, and maxillary incisor to SN plane were observed after intrusion of the incisors. There were significantly greater reductions in overbite, maxillary incisor to palatal plane, and maxillary incisor to upper lip in the implant group than in the J-hook headgear group. Estimated force analysis resulted in significantly more force in the vertical direction and less in the horizontal direction in the implant group. Furthermore, significantly less root resorption was observed in the implant group compared with the J-hook headgear group. Conclusions: The maxillary incisors were effectively intruded by using miniscrews as orthodontic anchorage without patient cooperation. The amount of root resorption was not affected by activating the ligature wire from the miniscrew during incisor intrusion.

本文言語English
ページ(範囲)654-660
ページ数7
ジャーナルAmerican Journal of Orthodontics and Dentofacial Orthopedics
133
5
DOI
出版ステータスPublished - 2008 5月
外部発表はい

ASJC Scopus subject areas

  • 歯科矯正学

フィンガープリント

「Comparison of the intrusion effects on the maxillary incisors between implant anchorage and J-hook headgear」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル