scholarly journals Effect of the Er, Cr: YSGG Laser Parameters on Shear Bond Strength and Microstructure on Human Dentin Surface

Author(s):  
Eun Mi ◽  
Sungyoon Huh ◽  
Duck Su ◽  
Sun-Young Kim ◽  
Su-Jin Ahn ◽  
...  
2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmed Mohammed Hassan ◽  
Ahmed Ali Goda ◽  
Kusai Baroudi

Objective. The aim of this study was to evaluate the effect of different disinfectant agents on bond strength of two types of resin composite materials.Methods. A total of 80 sound posterior teeth were used. They were divided into four groups(n=20)according to the dentin surface pretreatment (no treatment, chlorhexidine gluconate 2%, sodium hypochlorite 4%, and EDTA 19%). Each group was divided into two subgroups according to the type of adhesive (prime and bond 2.1 and Adper easy one). Each subgroup was further divided into two subgroups according to the type of resin composite (TPH spectrum and Tetric EvoCeram). Shear bond strength between dentin and resin composite was measured using Universal Testing Machine. Data collected were statistically analyzed byt-test and one-way ANOVA followed by Tukey’spost hoctest.Results. It was found that dentin treated with EDTA recorded the highest shear bond strength values followed by sodium hypochlorite and then chlorhexidine groups while the control group showed the lowest shear bond strength.Conclusions. The surface treatment of dentin before bonding application has a great effect on shear bond strength between resin composite and dentin surface.


LASER THERAPY ◽  
2018 ◽  
Vol 27 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Ahmed El Gamal ◽  
Etienne Medioni ◽  
Jean Paul Rocca ◽  
Carlo Fornaini ◽  
Nathalie Brulat-Bouchard

10.2341/08-82 ◽  
2009 ◽  
Vol 34 (3) ◽  
pp. 288-292 ◽  
Author(s):  
J-I. Lee ◽  
S-H. Park

Clinical Relevance In order to maximize the bond strength of a resin inlay to dentin, the exposed dentin surface should be sealed with DBA before taking an impression. In addition, the bonding agent should be gently air dried and light cured before applying the luting material.


2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Baraba Anja ◽  
Dukić Walter ◽  
Chieffi Nicoletta ◽  
Ferrari Marco ◽  
Sonja Pezelj Ribarić ◽  
...  

The purpose of thisin vitrostudy was to evaluate the microtensile bond strength of one-step self-etch adhesive to human dentin surface modified with air abrasion and sonic technique and to assess the morphological characteristics of the pretreated dentin surface. The occlusal enamel was removed to obtain a flat dentin surface for thirty-six human molar teeth. The teeth were randomly divided into three experimental groups (n= 12 per group), according to the pretreatment of the dentin: (1) control group, (2) air abrasion group, and (3) sonic preparation group. Microtensile bond strength test was performed on a universal testing machine. Two specimens from each experimental group were subjected to SEM examination. There was no statistically significant difference in bond strength between the three experimental groups (P> 0.05). Mean microtensile bond strength (MPa) values were 35.3 ± 12.8 for control group, 35.8 ± 13.5 for air abrasion group, and 37.7 ± 12.0 for sonic preparation group. The use of air abrasion and sonic preparation with one-step self-etch adhesive does not appear to enhance or impair microtensile bond strength in dentin.


2011 ◽  
Vol 28 (4) ◽  
pp. 236-241
Author(s):  
Larry Kimberlin ◽  
Phil Brown

Canine dentin has increased size and number of dentinal tubules compared to human dentin. With less intertubular surface area for bonding to composite material in dog teeth, bonding shear strength may be affected negatively. This study was designed to compare the shear bonding strength of canine and human dentin. It also compared bond strength of two different acid etch systems when used with the same composite resin. The shear bond strength of composite cylinders to dentin was measured in 30 extracted canine cuspid teeth and a similar number of human molar teeth. Shear bond strength was 40 % greater for human compared with canine dentin. This significantly different (P < 0.05) result validates the hypothesis that dentin bond strength is positively correlated with the area of intertubular dentin. Results also indicated that shear bond strength was greater in the self-etching bond system compared with the etch and rinse system, although this difference was not significant.


1990 ◽  
Vol 6 (3) ◽  
pp. 204-207 ◽  
Author(s):  
P.M. McInnes ◽  
S.L. Wendt ◽  
D.H. Retief ◽  
R. Weinberg

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