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Proceedings Paper

Tensile bond strength of different adhesive systems to primary dentin treated by Er:YAG laser and conventional high-speed drill
Author(s): Barbara A. Marques; Ricardo S. Navarro; Fellipe D. Silvestre; Sergio L. Pinheiro; Patricia M. Freitas; Jose Carlos P. Imparato; Margareth Oda
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Paper Abstract

The aim of this study was to evaluate the tensile strength of different adhesive systems to primary tooth dentin prepared by high-speed drill and Er:YAG laser (2.94μm). Buccal surfaces of 38 primary canines were ground and flattened with sand paper disks (#120-600 grit) and distributed into five groups (n=15): G1: diamond bur in high-speed drill (HD)+ 35% phosphoric acid (PA)+Single Bond (SB); G2: HD+self-etching One Up Bond F (OUB);G3: Er:YAG laser (KaVo 3- LELO-FOUSP)(4Hz, 80mJ, 25,72J/cm2) (L)+PA+SB, G4: L+SB, G5: L+OUB. The inverted truncated cone samples built with Z-100 composite resin after storage in water (37°C/24h) were submitted to tensile bond strength test on Mini Instron 4442 (0.5mm/min, 500N). The data were analyzed with ANOVA and Tukey Test (p<0.05). The mean (MPa) were: G1-3.18(±1.24); G2-1.79(±0.73); G3-3.17(±0.44); G4-8.29(±1.86); G5-7.11(±2.07). The data analyzed with ANOVA and Tukey Test showed that Laser associated with PA+SB, SB or OUB lead to increased bonding values when compared to HD+PA+SB and HD+OUB (p=0.000), L+SB showed higher values than L+PA+SB and L+OUB (p=0.0311). Er:YAG laser radiation promoted significant increase of bond strength of different adhesive systems evaluated in the dentin of primary teeth.

Paper Details

Date Published: 23 March 2005
PDF: 7 pages
Proc. SPIE 5687, Lasers in Dentistry XI, (23 March 2005); doi: 10.1117/12.601998
Show Author Affiliations
Barbara A. Marques, School of Dentistry, Univ. of Sao Paulo (Brazil)
Ricardo S. Navarro, School of Dentistry, Univ. of Sao Paulo (Brazil)
Fellipe D. Silvestre, Pontifice Catholic Univ. of Campinas (Brazil)
Sergio L. Pinheiro, Pontifice Catholic Univ. of Campinas (Brazil)
Patricia M. Freitas, School of Dentistry, Univ. of Sao Paulo (Brazil)
Jose Carlos P. Imparato, School of Dentistry, Univ. of Sao Paulo (Brazil)
Margareth Oda, School of Dentistry, Univ. of Sao Paulo (Brazil)


Published in SPIE Proceedings Vol. 5687:
Lasers in Dentistry XI
Peter Rechmann; Daniel Fried, Editor(s)

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