Spatial changes of the upper dentition following en-masse space closure: A comparison between first and second premolar extraction / 대한치과교정학회지
Korean Journal of Orthodontics
;
: 371-380, 2005.
Artigo
em Coreano
| WPRIM
| ID: wpr-651467
ABSTRACT
The purpose of this experimental study was to evaluate and compare maxillary arch dimensional and positional changes between first and second premolar extraction groups. The Calorific Machine was used to illustrate tooth movement in three dimensions. The experimental teeth except the first or second premolars were embedded in artificial alveolar bone. The extraction space was closed using arch wires with bull loops into which 15 degree gable bends were placed. Before and after space closure, radiographs were taken in the sagittal and occlusal directions using occlusal films. The results showed greater mean maxillary incisor retraction and less anchorage loss in the maxillary first premolar extraction group than in the maxillary second premolar extraction group. Mesiopalatal rotation of anchor teeth was greater after extraction of a maxillary second premolar than a maxillary first premolar (p<.001).
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Dente
/
Técnicas de Movimentação Dentária
/
Dente Pré-Molar
/
Doença da Descompressão
/
Dentição
/
Incisivo
Idioma:
Coreano
Revista:
Korean Journal of Orthodontics
Ano de publicação:
2005
Tipo de documento:
Artigo
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