Er:YAG laser cavity preparation and composite resin bonding with a single-component adhesive system: Relationship between shear bond strength and microleakage
✍ Scribed by Marie-France Bertrand; Gianfranco Semez; Eric Leforestier; Michèle Muller-Bolla; Samir Nammour; Jean-Paul Rocca
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 357 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0196-8092
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✦ Synopsis
Abstract
Background and Objectives
The purpose of this study was to assess the performances of a single‐component adhesive system when an Er:YAG laser was used to prepare cavities.
Study Design/Materials and Methods
Shear bond strength tests were performed on composite rods bonded with a single‐component adhesive system to dentin surfaces prepared using either bur+acid, Er:YAG laser (fluence = 44 J/cm^2^), or Er:YAG laser+acid. Class V cavities were prepared differently according to the molar surface: buccal surfaces were prepared using a diamond bur, and lingual surfaces using the Er:YAG laser. In group 1, cavity walls were not acid treated after Er:YAG laser preparation. In group 2, only the enamel walls were acid treated. In group 3, all the enamel and dentin walls were acid treated. Microleakage was assessed using a methylene blue dye penetration method.
Results
Bond strength values did not differ significantly between the three groups (P = 0.162). Better marginal adaptation was obtained between the composite resin and cavity walls when Er:YAG laser preparation was followed by a total acid etching (P = 0.008).
Conclusions
Our results supported the use of single‐component adhesive systems in cavities prepared using Er:YAG laser. The step of acid etching must be maintained for the whole cavity walls in regard of the microleakage values. Lasers Surg. Med. 38:615–623, 2006. © 2006 Wiley‐Liss, Inc.