The aim of this study was to evaluate the influence of chlorhexidine on microleakage of composite restorations in class V cavities prepared with a carbide bur (CB) and a erbium:yttrium-aluminum-garnet (Er:YAG) laser.
Methods and Materials
Cavity preparations were created on the buccal surfaces of 48 bovine incisors using different methods then equally dividing them into four groups. Groups I and II were prepared with a #56 CB in a high speed handpiece while Groups III and IV were prepared with a Er:YAG laser at 350m J/4Hz on enamel and at 80.24 J/cm2 on dentin. The cavity preparations were rinsed with 2% chlorhexidine solution before the application of Clearfill SE Bond system and placement of a Z100 composite resin restoration. After 24 hours, the teeth were polished, thermocycled, and sealed with cosmetic varnish. The samples were then immersed in 2% methylene blue for four hours and sectioned in the buccolingual direction to determine the degree of microleakage.
Results
After statistical analysis (Kruskal-Wallis, p<0.05), no significant differences were verified among the tested groups and between the evaluated cervical or incisal margins of the restoration.
Conclusion
The use of the chlorhexidine did not interfere with the adhesion process regardless of whether a CB or the Er:YAG laser were used to prepare class V cavities when restored with the tested self-etching adhesive system.
Citation
Geraldo-Martins VR, Robles FRP, Matos AB. Chlorhexidine's Effect on Sealing Ability of Composite Restorations Following Er:YAG Laser Cavity Preparation. J Contemp Dent Pract 2007 July;(8)5:026-033.
Histological investigation of mid infrared laser ablation of dental hard tissues. In: International Congress on Lasers in Dentistry, 3. Salt Lake City 1992; Proceedings ISLD:243-244.
Erbium: YAG laser application in caries therapy. Evaluation of patient perception and acceptance. J Dent 1998;26:649-656.
Comparison between Er:YAG laser and conventional technique for root caries treatment in vitro. J Dent Res 1998;77:1704-1714.
A comparison of digital and optical criteria for detecting carious dentin. J Prosthet Dent 1985;53:643-646.
The effect of caries detector dyes and cavity cleansing agent on composite resin bonding to enamel and dentin. J Clin Pediatr Dent 2000;21:57-63.
Cavity disinfectants and dentin bonding. Oper Dent 1996;21:153-159.
The effect of cavity disinfectants on microleakage in dentin bonding systems. J Clin Pediatr Dent 1998;22:299-305.
Effects of various methods for chlorhexidine application on shear bond strength. Am J Orthod Dentofacial Orthop 1998;114:150-153.
Effect of disinfectant application methods on the bond strength of composite to dentin. J Oral Rehabil 1999;26:836-840.
Bond strength to primary tooth dentin following disinfection with a chlorhexidine solution: an in vitro study. Pediatr Dent 2003;25:49-52.
The effect of antimicrobial pre-treatments on the performance of resin composite restorations. Opere Dent 2003;28:716-722.
Bonding to intact dentin. J Dent Res 1996;75:706-1715.
Aggressiveness of contemporary self etching systems. I: Depth of penetration beyond dentin smear layers. Dent Mater 2001;17:296–308.
Dentin bond durability after three years using a dentin bonding agent with and without priming. Dent Mater 1996;12:302-307.
Long-term durability of dentin bonds made with a self-etching primer, in vivo. J Dent Res 1999;78:906–911.
Influence of self-etching primer treatment on the adhesion of resin composite to polished dentin and enamel. Dent Mater 1998;14:99-105.
An ultrastructural study of the influence of acidity of self-etching primers and smear layer thickness on bonding to intact dentin. J Adhes Dent 2000;2:83-98.
Reliability of in vitro microleakage tests: a literature review. J Adhes Dent 2001;4:295-8.
The effect of long-term storage on the microleakage of composite resin restorations: qualitative and quantitative evaluation. Pesqui Odontol Bras 2003;17:261-6.
Intrapulpal temperature during preparation with the Er:YAG laser: an in vitro study. Photomed Laser Surg. 2005;23(2):182-6.
In vitro study of enamel and dentin marginal integrity of composite and compomer restorations placed in primary teeth after diamond or Er:YAG laser cavity preparation. J Adhes Dent 2000;2:213-222.
The effect of lasers on dental hard tissues. J Am Dent Assoc 1993;124:65-70.
Lasers Surg Med 1992;12:625-30.
Enamel subsurface damage due tooth preparation with diamonds. J Dent Res 1997; 76:1698-1706.
Micro-tensile bond strength of two adhesives to Erbium:YAG-lased vs. bur-cut enamel and dentin. Eur J Oral Sci 2002;110:322-329.
Tensile bond strength and SEM evaluation of Er:YAG laser irradiated dentin using dentin adhesive. Denl Mater J 1998;17:125-138.
Bonding to ground dentin by a Phenyl-P self-etching primer. J Dent Res 1994;73:1212-1220.
Antimicrobial properties of self-etching primer-bonding systems. Oper Dent 2003;28:143-148.
Effects of various irrigation solutions on microleakage of Class V composite restorations. J Prosthet Dent 2004;91:265-267.
Microleakage of composite restorations after acid or Er:YAG laser cavity treatments. Dent Mater 2001; 17:340-346.
