23 March 2005 Tensile bond strength of different adhesive systems to primary dentin treated by Er:YAG laser and conventional high-speed drill
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Proceedings Volume 5687, Lasers in Dentistry XI; (2005); doi: 10.1117/12.601998
Event: SPIE BiOS, 2005, San Jose, CA, United States
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.
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Barbara A. Marques, Ricardo S. Navarro, Fellipe D. Silvestre, Sergio L. Pinheiro, Patricia M. Freitas, Jose Carlos P. Imparato, Margareth Oda, "Tensile bond strength of different adhesive systems to primary dentin treated by Er:YAG laser and conventional high-speed drill", Proc. SPIE 5687, Lasers in Dentistry XI, (23 March 2005); doi: 10.1117/12.601998; http://dx.doi.org/10.1117/12.601998
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KEYWORDS
Er:YAG lasers

Adhesives

Teeth

Laser drilling

Composite resins

Dental caries

Etching

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