The effect of alveolar decortication on orthodontically induced root resorption.
Angle Orthod
; 90(4): 524-531, 2020 07 01.
Article
em En
| MEDLINE
| ID: mdl-33378490
ABSTRACT
OBJECTIVE:
To determine the effect of alveolar decortication on orthodontically induced root resorption. MATERIALS ANDMETHODS:
A total of 24 male Wistar rats (14 week old) were used. The rats were randomly divided into one of the following three groups group 1 (control group), orthodontic tooth movement (OTM) for 2 weeks; group 2, OTM for 2 weeks + two alveolar decortications (2AD); group 3, OTM for 2 weeks + four alveolar decortications (4AD). The first molar was moved mesially for 2 weeks. Micro computed tomography was used to analyze root volume. In addition, histological sections were stained with Tartrate Resistant Acid Phosphatase (TRAP) to quantify the osteoclast number.RESULTS:
The buccal root volume in OTM + 4AD group was decreased by 8.92% and 6.11% when compared with the OTM-only group and OTM + 2AD group, respectively. Similarly, the other four root volumes in the OTM + 4AD group was decreased by 8.99% and 5.24% when compared with the OTM-only group and OTM + 2AD group, respectively. There was a decrease in buccal root density in the OTM + 4AD group by 4.66% and 3.56% when compared with the OTM-only group and the OTM + 2AD group, respectively. In addition, there was an increase in the number of osteoclasts by 195.73% and 98.74% in OTM + 4AD group in comparison with the OTM and OTM + 2AD group.CONCLUSIONS:
The amount of orthodontically induced root resorption was positively correlated with the extent of surgical injury used to accelerate orthodontic tooth movement.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Reabsorção da Raiz
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Revista:
Angle Orthod
Ano de publicação:
2020
Tipo de documento:
Article