Your browser doesn't support javascript.
loading
Biomechanical features of tooth movement from a lingual appliance in comparison with a labial appliance during space closure in sliding mechanics.
Komaki, Hiroya; Hamanaka, Ryo; Tominaga, Jun-Ya; Jinnai, Sachio; Nguyen, Tuan Anh; Kuga, Daiki; Koga, Yoshiyuki; Yoshida, Noriaki.
Afiliación
  • Komaki H; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Hamanaka R; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Tominaga JY; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Jinnai S; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Nguyen TA; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Kuga D; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
  • Koga Y; Department of Orthodontics, Nagasaki University Hospital, Nagasaki, Japan.
  • Yoshida N; Department of Orthodontics and Dentofacial Orthopedics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. Electronic address: nori@nagasaki-u.ac.jp.
Am J Orthod Dentofacial Orthop ; 162(3): 307-317, 2022 Sep.
Article en En | MEDLINE | ID: mdl-35422375
ABSTRACT

INTRODUCTION:

The objectives of this study were to simulate long-term orthodontic tooth movement in en-masse retraction using the finite element method and investigate the effects of power arms on tooth movements when using a lingual appliance in comparison with a labial appliance.

METHODS:

A 3-dimensional finite element model of the maxillary dentition was constructed with 0.018-in brackets and 0.016 × 0.022-in stainless steel archwire. An en-masse retraction was performed by applying retraction force at various lengths of the power arm (4, 6, 8, and 10 mm) to the second molar tube, and long-term tooth movements with the lingual and labial appliances were analyzed using the finite element method.

RESULTS:

Although lingual crown tipping of the incisor was more marked with the lingual appliance than with the labial appliance in the early phase of space closure, only a slight difference was evident after space closure. Although the power arm was effective for achieving better-controlled tooth movement and reducing vertical and transverse bowing effects, bodily movement of the incisor could not be achieved, and bowing effects could not be eliminated.

CONCLUSIONS:

To provide better torque control of the incisor or prevent a vertical bowing effect, the incorporation of extra torque into brackets of incisors was recommended, and the use of power arms for the lingual appliance. To prevent a transverse bowing effect, incorporation of the antibowing bend or application of retraction force from both buccal and lingual sides or temporary skeletal anchorage devices was recommended.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Soportes Ortodóncicos / Métodos de Anclaje en Ortodoncia Límite: Humans Idioma: En Revista: Am J Orthod Dentofacial Orthop Asunto de la revista: ODONTOLOGIA / ORTODONTIA Año: 2022 Tipo del documento: Article País de afiliación: Japón Pais de publicación: EEUU / ESTADOS UNIDOS / ESTADOS UNIDOS DA AMERICA / EUA / UNITED STATES / UNITED STATES OF AMERICA / US / USA

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Soportes Ortodóncicos / Métodos de Anclaje en Ortodoncia Límite: Humans Idioma: En Revista: Am J Orthod Dentofacial Orthop Asunto de la revista: ODONTOLOGIA / ORTODONTIA Año: 2022 Tipo del documento: Article País de afiliación: Japón Pais de publicación: EEUU / ESTADOS UNIDOS / ESTADOS UNIDOS DA AMERICA / EUA / UNITED STATES / UNITED STATES OF AMERICA / US / USA