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Tipo do documento: Artigo
Título: In vivo study of pixel grey-measurement in digital subtraction radiography for monitoring caries remineralization
Autor: Carneiro, Lórimer Sandoval
Nunes, C. A.
Silva, Maria Alves Garcia Santos
Leles, Cláudio Rodrigues
Mendonça, E. F.
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 5 10), unchanged (n 5 34) or remineralized (n 5 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.
Palavras-chave: Subtraction technique
Tooth remineralization
País: Gra-bretanha
Unidade acadêmica: Faculdade de Odontologia - FO (RG)
Citação: CARNEIRO, L. S. et al. In vivo study of pixel grey-measurement in digital subtraction radiography for monitoring caries remineralization. Dentomaxillofacial Radiology, London, v. 38, n. 2, p. 73-78, 2009.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1259/dmfr/15857365
Identificador do documento: 10.1259/dmfr/15857365
Data de publicação: 2009
Aparece nas coleções:FM - Artigos publicados em periódicos

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