A posteriori registration and subtraction of periapical radiographs for the evaluation of external apical root resorption after orthodontic treatment
Imaging Science in Dentistry
;
: 17-24, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-146510
ABSTRACT
PURPOSE:
This study employed a posteriori registration and subtraction of radiographic images to quantify the apical root resorption in maxillary permanent central incisors after orthodontic treatment, and assessed whether the external apical root resorption (EARR) was related to a range of parameters involved in the treatment. MATERIALS ANDMETHODS:
A sample of 79 patients (mean age, 13.5±2.2 years) with no history of trauma or endodontic treatment of the maxillary permanent central incisors was selected. Periapical radiographs taken before and after orthodontic treatment were digitized and imported to the Regeemy software. Based on an analysis of the posttreatment radiographs, the length of the incisors was measured using Image J software. The mean EARR was described in pixels and relative root resorption (%). The patient's age and gender, tooth extraction, use of elastics, and treatment duration were evaluated to identify possible correlations with EARR.RESULTS:
The mean EARR observed was 15.44±12.1 pixels (5.1% resorption). No differences in the mean EARR were observed according to patient characteristics (gender, age) or treatment parameters (use of elastics, treatment duration). The only parameter that influenced the mean EARR of a patient was the need for tooth extraction.CONCLUSION:
A posteriori registration and subtraction of periapical radiographs was a suitable method to quantify EARR after orthodontic treatment, and the need for tooth extraction increased the extent of root resorption after orthodontic treatment.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Ortodontia
/
Reabsorção da Raiz
/
Extração Dentária
/
Processamento de Imagem Assistida por Computador
/
Técnica de Subtração
/
Incisivo
Tipo de estudo:
Estudo prognóstico
Limite:
Humanos
Idioma:
Inglês
Revista:
Imaging Science in Dentistry
Ano de publicação:
2016
Tipo de documento:
Artigo
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