Characterisation of enamel white spot lesions using X-ray micro-tomography

Theory of X-ray microcomputed tomography in dental research: application for the caries research

“…These advantages have made XMT more popular as a means of measuring demineralization in vitro. 32,33 Since radiopacity corresponds well to mineral density in teeth, XMT is well-suited in detecting demineralization characteristics of caries lesions. 34 Furthermore, the nature of the data obtained in XMT lends itself to automated analysis.…”

Observations of mineralised tissues of teeth in X-ray micro-computed tomography

“…The main advantages of the system, such as the 3D reconstruction of carious lesions and getting two-dimensional (2D) cross-sections along any axes of the 3D image, make it an ideal system to study the dynamic process of reand demineralisation. Various researchers have shown that the concentration of minerals in sound enamel in the superficial -an intact layer of enamel white spot lesions and the deepest layer of initial caries, gradually decreases [14]. Other authors also found that examination of initial caries in the enamel using micro-CT showed no significant differences between the lesions clinically qualified as active and inactive.…”

“…This has been used to measure the demineralisation of enamel and dentin [13,14,24,29]. The main advantages of the system, such as the 3D reconstruction of carious lesions and getting two-dimensional (2D) cross-sections along any axes of the 3D image, make it an ideal system to study the dynamic process of reand demineralisation.…”

“…These features make obtaining images at much higher resolution possible, which reaches submicron scale [8,15,19]. However, micro-CT is not used for human in vivo studies because of high mutagenic potential of X-ray used in the present technique [14,29]. Therefore, research studies using micro-CT are carried out in vitro or on animal model [8,13,14,24,29,30], and the only limitation then may be the size of the sample.…”

Avaliação de cáries proximais por meio da microtomografia, tomografia Cone Beam e radiografias digitais

“…A µCT é o exame que produz imagens com a maior riqueza de detalhes dos métodos, os quais utilizam radiação X e têm como princípio, imagens seccionais ou tomográficas (EFEOGLU et al, 2005;HUANG et al, 2007;MERCER et al, 2003;OLEJNICZAK et al, 2007 Outro dado interessante foi que em alguns espécimes pode-se observar a presença de áreas hipomineralizadas na dentina. Estas áreas aparecem como aglomerados circulares hipodensos espalhados no corpo da dentina.…”