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VOLUME 10 , ISSUE 1 ( January, 2009 ) > List of Articles

RESEARCH ARTICLE

Can the Method of Primer Application Influence Adhesion to Er:YAG-laser Irradiated Dentin?

Adriana B. Matos, Sérgio B. Botta, Samuel N. Vieira, Rosely Cordon, Márcia M. Marques

Citation Information : Matos AB, Botta SB, Vieira SN, Cordon R, Marques MM. Can the Method of Primer Application Influence Adhesion to Er:YAG-laser Irradiated Dentin?. J Contemp Dent Pract 2009; 10 (1):49-57.

DOI: 10.5005/jcdp-10-1-49

License: CC BY-NC 3.0

Published Online: 01-01-2009

Copyright Statement:  Copyright © 2009; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of this study was to evaluate how cavity preparation and primer application methods influence the adhesion of composite resin to dentin using a self-etching system.

Methods and Materials

Forty-eight extracted, sound human molars were divided into six groups (n=8) according to the method used for the surface preparation of the teeth (#600-grit paper disc, diamond bur, and Er:YAG laser) and the primer application method utilized (active or passive). Following the adhesive procedure using a self-etching system, 5 mm high composite buildups were created with Z-250 composite resin. After storage in water at 37°C for 24 hours, the specimens were vertically sectioned into serial 1 mm2 sticks and tested for microtensile strength (μ-TBS). Nine additional molars were prepared for morphological analysis using scanning electron microscopy (SEM).

Results

Statistical analysis showed surface preparation technique (p<0.00) and primer application methods (p<0.001) do influence bond strength of the self-etching system tested. The best adhesion was achieved with specimens having the dentin ground with sandpaper followed by those ground with diamond burs. The worst bonding was obtained with Er:YAG laser ablated dentin. The active primer application method increased bonding performance compared to the passive method.

Conclusions

Within the limitations of the study, it can be stated surface treatment can influence the bond strength of the self-etching system tested and the active primer application method is more effective in achieving success in bonding to dentin compared with the passive application method.

Clinical Significance

Clinicians should use the active application method to apply a mild acidic self-etching primer along with an appropriate tooth surface preparation to facilitate the bond strength between dentin and composite resin.

Citation

Botta SB, Vieira SN, Cordon R, Marques MM, Matos AB. Can the Method of Primer Application Influence Adhesion to Er:YAG-laser Irradiated Dentin? J Contemp Dent Pract 2009 January; (10)1:049-057.


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