IADR Abstract Archives
Enhanced Detection of Orthodontic Attachment Remnants Using UV Absorption Imaging
Objectives: The objective of this study is to develop a technique for the enhanced detection of orthodontic composite attachments during its removal using ultraviolet (UV) absorption imaging.
Methods: With the use of a conventional camera which was modified to detect only UV light, composite that absorbs UV light will appear as a dark cast against the bright tooth enamel surface, making the residual composite easily localized during removal procedures. The effects of setup parameters including camera settings, illumination source, and properties of the composite material on the quality of the UV images are investigated and optimized.
Results: A calibration system that relates the image gray values with thickness reveals three types of composites: weakly-, linearly, and strongly absorbing in the 0.1 mm to 1.0 mm composite thickness range. The effectiveness of the technique is demonstrated using real-time display of composite removal operation on a tv screen and on an endoscope panel.
Conclusions: The technique provides a convenient visual guide for the clinician, facilitating ease in the remnant removal and helps in avoiding iatrogenic damage to the enamel.
Methods: With the use of a conventional camera which was modified to detect only UV light, composite that absorbs UV light will appear as a dark cast against the bright tooth enamel surface, making the residual composite easily localized during removal procedures. The effects of setup parameters including camera settings, illumination source, and properties of the composite material on the quality of the UV images are investigated and optimized.
Results: A calibration system that relates the image gray values with thickness reveals three types of composites: weakly-, linearly, and strongly absorbing in the 0.1 mm to 1.0 mm composite thickness range. The effectiveness of the technique is demonstrated using real-time display of composite removal operation on a tv screen and on an endoscope panel.
Conclusions: The technique provides a convenient visual guide for the clinician, facilitating ease in the remnant removal and helps in avoiding iatrogenic damage to the enamel.