Microleakage of composite fillings in Er,Cr:YSGG laser-prepared class II cavities

Lasers in Surgery and Medicine
N GutknechtF Lampert

Abstract

If there is insufficient bonding to the enamel, the shrinkage of composites that occurs during polymerization can result in a gap between the filling material and the cavity wall. This gap permits the passage of bacteria or their metabolic products and also of various molecules and ions. This leads to hypersensitivity or secondary caries and is thus one of the causes of the failures encountered in composite restorations. The aim of this study was to examine the quality of the margins of composite fillings in Er,Cr:YSGG laser-prepared cavities by means of dye penetration. The results were compared with those of restoration in conventionally prepared and conditioned cavities. To this end, 45 class II cavities in extracted molars were prepared. The teeth were divided into three groups. The first group served as a control group. The cavities were prepared in the classical manner by using a diamond, beveled and subsequently conditioned by the etching method. In group 2, the cavities were prepared and conditioned exclusively with the Er,Cr:YSGG laser. In group 3, laser preparation was supplemented by conditioning of the cavity with phosphoric acid. No significant difference could be found between the classical preparation technique i...Continue Reading

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Citations

Mar 17, 2009·Lasers in Medical Science·Ali ObeidiNorbert Gutknecht
Mar 12, 2009·Lasers in Medical Science·Mehmet Kemal CalişkanBerdan Aydin
May 18, 2010·Lasers in Medical Science·Mustafa Murat KoçakSis Darendeliler Yaman
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Dec 15, 2015·Lasers in Surgery and Medicine·Yuan-Yuan KongMin-Le Chen
Jul 23, 2005·Lasers in Surgery and Medicine·Ana Cecilia Corrêa AranhaCarlos de Paula Eduardo
Jul 10, 2009·Lasers in Surgery and Medicine·Ali ObeidiFiroz Rahemtulla
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