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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Dent Mater. 2012 May 9;28(7):792–800. doi: 10.1016/j.dental.2012.04.004

Figure 5.

Figure 5

Mean Backscattered Intensity of the subsurface enamel below the composite filling interface. Teeth (n=6) that were recently restored (< 6 months) with resin composites, which were assessed to be sound by tactile method, had underlying enamel with low backscattered intensity. Error bars represent the standard deviation. Cavitated secondary caries, which were tactile (+) and placed over 6 months ago, along the tooth-composite interface (n=5) had significantly higher (p <0.01) backscattering intensity than restorations that were recently placed. A majority of the tactile sound composites (n=11), which were restored greater than 6 months ago, showed low enamel backscattering along the subsurface interface. However, several underlying interfaces (dotted box) showed a marked increase in enamel scattering than recently placed restorations. This suggests the ability of CP-OCT to assess early secondary caries prior to cavitation.