AI Article Synopsis
- The study aimed to assess how well light passes through different translucent posts (D.T. Light-posts) available on the market.
- Nine posts were tested under two lighting methods (vertical and oblique trans-illumination) in a completely dark environment, using a light curing unit, with images captured for analysis.
- Results showed no significant differences in light transmission between vertical and oblique methods for most posts, but a notable difference was found in one; generally, larger posts transmitted more light, and vertical trans-illumination was preferred.
Article Abstract
Purpose: The aim of this study was to evaluate the progression of the light through a series of translucent posts available on the market (D.T. Light-post, R.T.D.).
Materials & Methods: nine D.T. Light-posts (DTLPs) were analyzed, 3 for each available measure. Each post was trans-illuminated both in vertical trans-ilumination (VTI) and oblique trans-illumination (OTI), via a light curing unit (LCU) (V.I.P., Bisco), in complete darkness conditions, and the resulting image of the post, was digitally acquired with a 1:1 ratio. The images were then analyzed using digital image analysis software (Image Pro plus 4.1, Media Cybernetics) previously performing the light intensity calibration, of the LCU, by means a radiometer (Curing Radiometer model 100, Demetron Corp.). The evaluation of the progression of the light through the posts was conducted for each post along its longitudinal axis.
Results: no significant differences concerning VTI vs OTI for DTLP n.1 (p = 0.341) and DTLP n. 3 (p = 0.115), while for DTLP n.2 a significant difference was observed (p = 0.041); Conclusion: The results demonstrate that the greater the section of the post, the greater its ability to transmit light at a distance; also the vertical Trans-illumination of the post is to be preferred to the oblique one.
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