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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:44 |
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Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Polymer Physics
Title:
Atomic Force Microscopy evaluation of dentin surfaces
Authors:
Irina-Maria GHEORGHIU(1), Paula PERLEA(1), Catalin BERLIC(2), Ioana SUCIU(1), Dana BODNAR(1), Daciana ZMARANDACHE(1), Dumitru STAICU(2)
Affiliation:
1)University of Medicine and Pharmacy „Carol Davila” Bucharest, Faculty of Dental Medicine, Romania.
2)University of Bucharest, Faculty of Physics, Magurele, Bucharest, Romania
E-mail
igheorghiu@hotmail.com
Keywords:
Atomic Force Microscopy, carbon steel burs, polymeric burs, dentine surface.
Abstract:
The current attitude in the treatment of dental lesions requiring dental restoration is the minimally invasive approach, regardless of their nature. In case of treatment of dental caries, the removal of all irremediable affected tissue remains a necessity. Dental surfaces, both the enamel and the dentin, which are processed using different types of instrumentation presents different structural characteristics. These specific topographical aspects play a key role in achieving adhesion of modern restoration materials to tooth structure.
The ultrastructural studies of dentin surfaces revealed that its multiple features have a major contribution and influence in dentin adhesion. The present study is conducted in vitro on a total of 20 premolar and molar human teeth which have cavities with altered dentin. In the present study, with the aid of optical microscopy and AFM (Atomic Force Microscopy) techniques, we have examined ultrastructural characteristics of the dentin surfaces mechanically prepared with stainless steel burs and with polymer burs. The results of both optical and AFM investigations showed significant differences in the dentin surface’s aspect and characteristics for the two tested groups.
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