Torque control during lingual anterior retraction without posterior appliances / 대한치과교정학회지
The Korean Journal of Orthodontics
;
: 3-14, 2013.
Artículo
en Inglés
| WPRIM
| ID: wpr-213103
ABSTRACT
OBJECTIVE:
To evaluate the factors that affect torque control during anterior retraction when utilizing the C-retractor with a palatal miniplate as an exclusive source of anchorage without posterior appliances.METHODS:
The C-retractor was modeled using a 3-dimensional beam element (0.9-mm-diameter stainless-steel wire) attached to mesh bonding pads. Various vertical heights and 2 attachment positions for the lingual anterior retraction hooks (LARHs) were evaluated. A force of 200 g was applied from each side hook of the miniplate to the splinted segment of 6 or 8 anterior teeth.RESULTS:
During anterior retraction, an increase in the LARH vertical height increased the amount of lingual root torque and intrusion of the incisors. In particular, with increasing vertical height, the tooth displacement pattern changed from controlled tipping to bodily displacement and then to lingual root displacement. The effects were enhanced when the LARH was located between the central and lateral incisors, as compared to when the LARH was located between the lateral incisors and canines.CONCLUSIONS:
Three-dimensional lingual anterior retraction of the 6 or 8 anterior teeth can be accomplished using the palatal miniplate as the only anchorage source. Using LARHs at different heights or positions affects the quality of torque and intrusion.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Férulas (Fijadores)
/
Diente
/
Torque
/
Desplazamiento Psicológico
/
Incisivo
Tipo de estudio:
Estudio pronóstico
Idioma:
Inglés
Revista:
The Korean Journal of Orthodontics
Año:
2013
Tipo del documento:
Artículo
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