Influence of Matrix Metalloproteinase Synthetic Inhibitors on Dentin Microtensile Bond Strength of Resin Cements

2012 ◽  
Vol 37 (4) ◽  
pp. 386-396 ◽  
Author(s):  
THS Stape ◽  
MS Menezes ◽  
BCF Barreto ◽  
FHB Aguiar ◽  
LR Martins ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Phosphoric Acid ◽  
Bond Strength ◽  
Statistical Difference ◽  
Strength Testing ◽  
Microtensile Bond Strength ◽  
Resin Cements ◽  
Tukey Test ◽  
Human Dentin ◽  
Acid Gel

SUMMARY This study evaluated the effect of dentin pretreatment with 2% chlorhexidine (CHX) or 24% ethylenediamine tetra-acetic acid gel (EDTA) on the dentin microtensile bond strength (μTBS) of resin cements. Composite blocks were luted to superficial noncarious human dentin (n=10) using two resin cements (RelyX ARC [ARC] and RelyX U100 [U100]) and three dentin pretreatments (without pretreatment–control, CHX, and EDTA). CHX was applied for 60 seconds on the acid-etched dentin in the ARC/CHX group, and for the same time on smear layer-covered dentin in the U100/CHX group. EDTA was applied for 45 seconds on smear-covered dentin in the U100/EDTA group, and it replaced phosphoric acid conditioning in the ARC/EDTA group for 60 seconds. After storage in water for 24 hours, specimens were prepared for microtensile bond strength testing. The results were submitted to two-way analysis of variance (ANOVA) followed by Tukey test. ARC produced significantly higher μTBS (p<0.05) compared to the U100, except when EDTA was used. For ARC, no pretreatment and CHX produced higher μTBS than EDTA. For U100, EDTA produced higher μTBS; no statistical difference occurred between CHX pretreatment and when no pretreatment was performed. While CHX did not affect immediate dentin bond strength of both cements, EDTA improved bond strength of U100, but it reduced dentin bond strength of ARC.

Effects of Immediate Dentin Sealing and Pulpal Pressure on Resin Cement Bond Strength and Nanoleakage

2016 ◽  
Vol 41 (2) ◽  
pp. 189-199 ◽  
Author(s):  
VB Santana ◽  
RS de Alexandre ◽  
JA Rodrigues ◽  
C Ely ◽  
AF Reis
Keyword(s):  
Bond Strength ◽  
Negative Influence ◽  
Resin Cement ◽  
Microtensile Bond Strength ◽  
Resin Cements ◽  
Strength Data ◽  
Tukey Test ◽  
Luting Agents ◽  
Adhesive Luting ◽  
Scanning Electron

SUMMARY Objective: The object of this study was to evaluate the simulated pulpal pressure (SPP) and immediate dentin sealing technique (IDS) effects on the microtensile bond strength (μTBS) and nanoleakage of interfaces produced by different luting agents. Methods and Materials: Two self-adhesive luting agents (RelyX Unicem [UC] and Clearfil SA Luting [SA]) and two conventional luting agents (Rely X ARC [RX] and Panavia F [PF]) were evaluated. Eighty human molars were divided in four groups according to luting agents. Each group was subdivided according to SPP (with or without) and dentin sealing (immediate or delayed) using Clearfil SE Bond (n=5). After IDS was performed, specimens were stored in water for seven days before luting procedures. Composite blocks were luted according to the manufacturers' instructions. One half of the specimens were subjected to 15 cm H2O of hydrostatic pressure for 24 hours before cementation procedures and continued for 24 hours afterward. Then, restored teeth were sectioned into beams and tested in tension. Two additional teeth per group were prepared for nanoleakage evaluation with scanning electron microscopy. Bond strength data were statistically analyzed by three-way analysis of variance and Tukey test. Results: μTBS of RX decreased when it was subjected to SPP without IDS. However, in the same conditions, μTBS of UC increased. The IDS prevented negative influence of SPP on μTBS of RX and PF; however, a decrease in μTBS of SA and UC was observed. Except for RX, IDS increased μTBS for all resin cements. Conclusion: Independent of SPP, the IDS technique obtained higher μTBS for PF, SA, and UC and did not influence RX μTBS.

scholarly journals Influence of reused dental burs on bond strength to dentin

2014 ◽  
Vol 2 (3) ◽  
pp. 235
Author(s):  
Diogo Pedrollo Lise ◽  
Sylvio Monteiro Júnior ◽  
Renata Gondo
Keyword(s):  
Bond Strength ◽  
Analysis Of Variance ◽  
Adhesive System ◽  
Strength Test ◽  
Microtensile Bond Strength ◽  
Tukey Test ◽  
Diamond Bur ◽  
Human Dentin ◽  
Dental Burs

AIM: this study evaluated the bond strength of an adhesive system to human dentin prepared with reused diamond burs. MATERIAL AND METHODS: five molars (G1) were prepared in a standardized way with five diamond burs. Flat deep dentin surfaces were etched, received adhesive and received composite build-ups. The same burs were cleaned and reused on another five teeth groups (G2 until G8). After 24-hours storage and thermocycling, 50 dentin-resin sticks per group were obtained and subjected to microtensile bond strength test (μTBS). RESULTS: analysis of variance (ANOVA) and Tukey test were applied to identify differences between groups (p<0.05). The reuse of a diamond bur for more than two preparations resulted in significantly lower µTBS values (G1 = G2 > G3 = G4 = G5 = G6 = G7 = G8). CONCLUSION: Reuse of diamond burs interfered on adhesion between dentin and resin.

scholarly journals Effect of dentin pretreatment and curing mode on the microtensile bond strength of self-adhesive resin cements

2015 ◽  
Vol 7 (4) ◽  
pp. 317 ◽  
Author(s):  
Seung-Hyun Youm ◽  
Kyoung-Hwa Jung ◽  
Sung-Ae Son ◽  
Yong-Hoon Kwon ◽  
Jeong-Kil Park
Keyword(s):  
Bond Strength ◽  
Microtensile Bond Strength ◽  
Resin Cements ◽  
Adhesive Resin

scholarly journals Influence of Air Abrasion and Sonic Technique on Microtensile Bond Strength of One-Step Self-Etch Adhesive on Human Dentin

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Baraba Anja ◽  
Dukić Walter ◽  
Chieffi Nicoletta ◽  
Ferrari Marco ◽  
Sonja Pezelj Ribarić ◽  
...  
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Control Group ◽  
Air Abrasion ◽  
Microtensile Bond Strength ◽  
Dentin Surface ◽  
Significant Difference ◽  
Human Dentin ◽  
One Step ◽  
Self Etch

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.

Microtensile bond strength to ceramic of experimental resin cements

2014 ◽  
Vol 30 ◽  
pp. e39
Author(s):  
A.R.M. Palialol ◽  
A.F. Lima ◽  
A.C.R.A. Lancellotti ◽  
F.H.B. Aguiar ◽  
L.S. Gonçalves ◽  
...  
Keyword(s):  
Bond Strength ◽  
Microtensile Bond Strength ◽  
Resin Cements

Microtensile Bond Strength of Dual-Cured Resin Luting Cements to Dentin by the Type of Dentin Adhesives

2007 ◽  
Vol 361-363 ◽  
pp. 889-892
Author(s):  
S.Y. Kim ◽  
D.W. Kim ◽  
S.H. Park ◽  
K.K. Choi
Keyword(s):  
Bond Strength ◽  
Resin Composite ◽  
Resin Cement ◽  
Adhesive Systems ◽  
Microtensile Bond Strength ◽  
Resin Cements ◽  
Luting Cements ◽  
Dentin Adhesives ◽  
Materials Used ◽  
Mandibular Third Molars

This study was performed to investigate the bond strength between 4 dentin adhesives and resin luting cements by means of μTBS test. The materials used in this study were four resin cements (Choice, Panavia F, RelyX ARC, Bistite II DC), one 3-step adhesive (All-Bond2), one 2- step self-etching adhesive (Clearfil SE-Bond) and two 1-step self-etching adhesives(Prompt L-Pop and One-Up Bond F). Combination of 4 different dentin adhesives with 4 resin cements made up 16 experimental groups. Extracted human mandibular third molars without caries and restoratives were stored in saline and used within 1 month of extraction. All adhesive systems and resin cements were manipulated and applied to the dentin surfaces according to the manufactures’ instructions. The resin composite “overlays” prepared with 6 mm thickness (Tescera, Bisco Inc., Schaumburg, IL, USA) were luted with each resin cement. Each sample was measured μTBS. 1-step self-etching adhesives coupled with all resin luting cements used in this study resulted in lower bond strength except of OU-PA group. When Choice, RelyX ARC and Bistite II were used, Clearfil SE-Bond showed significantly higher μTBS values than 1-step self-etching adhesives (p<0.05). Clearfil SE-Bond did not show significant μTBS values than All-Bond 2 that is conventional 3-step dentin adhesive (p>0.05).

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