Efficacy of upper-incisor torque control with clear aligners: a retrospective study using cone-beam computed tomography.
Clin Oral Investig
; 27(7): 3863-3873, 2023 Jul.
Article
em En
| MEDLINE
| ID: mdl-37036513
ABSTRACT
OBJECTIVES:
The objectives of this retrospective clinical study were to evaluate the efficacy of clear aligners on upper-incisor torque control, with the expectation of providing guidance for clinics. MATERIALS ANDMETHODS:
Pretreatment (T0) and posttreatment (T1) cone-beam computed tomography (CBCT) scans of 47 patients with a nonextraction treatment using clear aligners were obtained and 120 upper-incisors with torque ≥5° were selected. Voxel-based superimpositions were performed using Dolphin imaging software and achieved movements were then measured. Difference between achieved and predicted movement (DAPM) and the efficiency for upper-incisor torque were used to evaluate the torque control efficacy.RESULTS:
The achieved torque movement with clear aligners was lower than predicted significantly, as the mean efficiency was 46.81±33.95%. Additionally, the achieved incisor movement of the crown and root differed significantly from the predicted movement, especially root movement.CONCLUSIONS:
Clear aligners struggle to control upper-incisor torque, particularly root movement. In that case, overcorrection is necessary to prevent torque loss. CLINICAL RELEVANCE Clear aligners remain a limitation on torque control and overcorrection should be considered.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Aparelhos Ortodônticos Removíveis
/
Torque
/
Tomografia Computadorizada de Feixe Cônico
/
Incisivo
Tipo de estudo:
Guideline
/
Observational_studies
/
Risk_factors_studies
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article