In vivo study of pixel grey-measurement in digital subtraction radiography for monitoring caries remineralization.
Dentomaxillofac Radiol
; 38(2): 73-8, 2009 Feb.
Article
em En
| MEDLINE
| ID: mdl-19176648
ABSTRACT
OBJECTIVES:
The aim of this study was to evaluate the performance of a quantitative method, based on pixel grey value measurements, for monitoring caries remineralization.METHODS:
Proximal radiographs of 11 patients (61 enamel caries lesions) were taken both before and after a 2 month remineralization protocol. Radiographs were digitized and for each area a follow-up image was subtracted from a baseline image. A quantitative analysis was undertaken using ImageTool software (University of Texas Health Science Center, San Antonio, TX). For each caries lesion diagnosed, a mean pixel value was obtained in digital subtraction radiographs (SR) using a scale ranging from 0-255 grey values. To identify caries status after the remineralization protocol, a subjective analysis of SR was undertaken by 6 radiologists who graded the lesions as demineralized (n = 10), unchanged (n = 34) or remineralized (n = 17).RESULTS:
There was a statistically significant difference between the mean pixel values for demineralized (112.1+/-14.4), unchanged (127.3+/-12.3) and remineralized (137.5+/-13.8) lesions.CONCLUSIONS:
It was concluded that the status of proximal caries lesions after remineralization therapy can be assessed by pixel grey measurements in SR and may constitute a suitable complementary method for monitoring the results of remineralization protocol in clinical practice.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Remineralização Dentária
/
Processamento de Imagem Assistida por Computador
/
Intensificação de Imagem Radiográfica
/
Técnica de Subtração
/
Cárie Dentária
Tipo de estudo:
Guideline
/
Observational_studies
/
Prognostic_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Dentomaxillofac Radiol
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil