Corticotomy affects both the modus and magnitude of orthodontic tooth movement.
Eur J Orthod
; 40(1): 107-112, 2018 01 23.
Article
em En
| MEDLINE
| ID: mdl-28591765
ABSTRACT
Objective:
To analyze whether the decreased bone density due to the manipulation of bone remodeling rate has an influence on the type of the planned tooth movement. Materials andmethods:
A finite element model of a lower incisor has been developed. The density of the alveolar bone surrounding the tooth has been assumed to simulate the one occurring after corticotomy to increase tooth movement rate. Moment-to-force ratios corresponding to three different types of movements have been simulated; uncontrolled tipping, translation, and root movement. The three tooth movements have been analyzed in both corticotomized and non-corticotomized simulations, and the final effects on the amount and type of tooth movement analyzed. The stress and strain levels in the periodontal ligament have been analyzed too.Results:
The amount of tooth movement obtained in case of lower bone density is higher in all types of movement simulations. The centre of rotation of the movement shifts more apically in case of translation, controlled and uncontrolled tipping. In the corticotomy simulations, the compressive stresses in the periodontal ligament decreased while the tensile stresses increased.Conclusion:
A decreased bone density influences not only the amount of tooth movement, but also its type. This study suggests that the moment-to-force ratios used in conventional orthodontics should be modified in case of techniques that decrease bone density to enhance tooth movement rate.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Osteotomia
/
Técnicas de Movimentação Dentária
/
Processo Alveolar
/
Incisivo
Limite:
Humans
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article