An Experiment Of Using X-Ray Microtomography (XMT) To Study The Depth Of Bonding Agent Penetration Into Dentinal Tubules
Introduction: This is a novel study of the depth of penetration of bonding agents (BA) by using a miniaturised CT-scan, XMT.The Linear Attenuation Coefficient describes the fraction of a beam of x-rays or gamma rays that is absorbed or scattered per unit thickness of the absorber. The higher the LAC, the more opaque the image is. Materials and Methods: The primer and sealer of bonding agent (BA) were added with contrast, iodine and tin methacrylate respectively. Each drop of the mixture were scanned for 1 hour with Mu Cat2 XMT. Linear Attenuation co-efficient (LAC) of the BA must be optimized to appear more than the enamel & dentine. 3 extracted molar teeth were sectioned up to the dentine layer and the dentine were acid etched, dried and applied with the BA. The teeth were scanned by using the same machine for 24 hours and the penetration depth of the BA was studied by using in house (Queen Mary University of London) software. Results: The LAC of dentine was 1.6 cm-1, enamel 2.6 cm-1 and the primer was 3.2 cm-1. Penetration depth of BA was about 30-300um. However, the penetration depth of the BA were not homogenous throughout the dentine. Conclusion(s): We have demonstrated that XMT gives a clear picture of penetration depth of the contrast added primer with iodine that warrants further studies in this field.
How to Cite
All material submitted for publication is assumed to be submitted exclusively to the IIUM Medical Journal Malaysia (IMJM) unless the contrary is stated. Manuscript decisions are based on a double-blinded peer review process. The Editor retains the right to determine the style and if necessary, edit and shorten any material accepted for publication.
IMJM retain copyright to all the articles published in the journal. All final ‘proof’ submissions must be accompanied by a completed Copyright Assignment Form, duly signed by all authors. The author(s) or copyright owner(s) irrevocably grant(s) to any third party, in advance and in perpetuity, the right to use, reproduce or disseminate the research article in its entirety or in part, in any format or medium, provided that no substantive errors are introduced in the process, proper attribution of authorship and correct citation details are given, and that the bibliographic details are not changed. If the article is reproduced or disseminated in part, this must be clearly and unequivocally indicated.