The Effect of Endodontic Irrigants on the Microtensile Bond Strength of Dentin Adhesives

2009 ◽  
Vol 35 (9) ◽  
pp. 1259-1263 ◽  
Author(s):  
Haktan Yurdagüven ◽  
Jale Tanalp ◽  
Burcu Toydemir ◽  
Kambiz Mohseni ◽  
Mübin Soyman ◽  
...  
2007 ◽  
Vol 361-363 ◽  
pp. 889-892
Author(s):  
S.Y. Kim ◽  
D.W. Kim ◽  
S.H. Park ◽  
K.K. Choi

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).


2007 ◽  
Vol 361-363 ◽  
pp. 869-872
Author(s):  
J.R. Kim ◽  
M.R. Jung ◽  
Sang Jin Park ◽  
K.K. Choi

The purpose of this study was to evaluate the effect of different etching times on microtensile bond strength(μTBS) to dentin both initial and after thermocycling with 3 different types of total-etching adhesives. Fifty four teeth were divided into 18 groups according to 3 etching times(5, 15, 25sec), 3 types of adhesives(Scotchbond Multipurpose(SM), Single Bond(SB), One-Step(OS)), and thermocycling(0, 2,000cycles). Following the bonding procedure, the specimens were bonded using Z250 composite. Half of them were not thermocycled (control group) and the others were subjected to 2,000 thermocycle (experimental group) and processed for microtensile bond strength testing. The microtensile bond strength(MPa) by different etching time(5, 15, 25s) was 37.7±9.1, 34.3±10.9 and 30.5±7.5 using Scotchbond Multipurpose(SM), 34.6±10.1, 33.8±7.6, 35.3±9.9 using single bond(SB) and 34.3±7.6, 31.3±8.5, 35.8±11.0 using one step(OS). After 2000 thermocycling the specimens, the microtensile bond strength(MPa) was decreased for all dentin bonding systems tested. But when specimens were bonded with OS, there is no significant difference between microtensile bond strength of the groups with the different etching times(5, 15, 25s) (28.2±7.8a , 29.1±8.6a and 28.2±9.4a). And the microtensile bond strength of the groups using SM, SB was decreased significantly when the etchant was applied for 25 sec(p<0.05). After all, the adhesive durability for dentin could be affected by type of solvents in adhesive and etching time. Especially, extended etching time may deteriorate dentin bond strength when ethanol-based adhesive was used


2017 ◽  
Vol 35 (3) ◽  
pp. 893-900 ◽  
Author(s):  
Cristián Bravo ◽  
Camila S Sampaio ◽  
Ronaldo Hirata ◽  
Regina M Puppin-Rontani ◽  
Juan Ricardo Mayoral ◽  
...  

1998 ◽  
Vol 14 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Steven R. Armstrong ◽  
Daniel B. Boyer ◽  
John C. Keller

2021 ◽  
pp. 232020682199798
Author(s):  
Beyza Unalan Degirmenci ◽  
Alperen Degirmenci ◽  
Emine Kara

Aim: Natural antioxidants were offered as the answer of dentin adhesion issue. The aim of this study is to investigate the effects of proanthocyanidin and lycopene as pretreatment agents on the sound and caries-affected dentin surface on microtensile bond strength and microleakage. Materials and Methods: This study was designed as in vitro because of that 84 mandibular molar teeth were collected. Forty-two of the included teeth were carious teeth, while the other 42 were without caries. Sixty of them were used for microleakage and 24 for microtensile bond strength testing and scanning electron microscopy analysis. The samples were divided into six subgroups randomly according to dentin pretreatments: 5% proanthocyanidin, 5% lycopene, and no antioxidant application. After the restorative procedures, samples were attached to the microtensile tester. Samples were subjected to tensile stress in the load cell until they broke at a speed of 0.5 mm per min. Microtensile bond strength (µTBS) and microleakage test data were analyzed with two-way analysis of variance, Bonferroni correction, and Tamhane’s T2 tests. Results: Two-way variance analysis showed that dentin pretreatment applications, dentin substrate, and the interaction between these two parameters had statistically significant effects on µTBS values ( P < .001). There was no difference between dentin pretreatment applications in terms of microleakage scores ( P > .05). Conclusion: The application of dentin pretreatment with proanthocyanidin is a successful procedure that increases the bond strength in both dentin substrate, while pretreatment with lycopene in caries-affected dentin reduces it.


Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 450
Author(s):  
Apinya Limvisitsakul ◽  
Suppason Thitthaweerat ◽  
Pisol Senawongse

This paper presents the effect of blade type and feeding force during resin-bonded dentin specimen preparation on the microtensile bond strength (μTBS) test. Forty resin-bonded flat middle dentin specimens were divided into four groups. The specimens of each group were sectioned according to type of blade and feeding force as follows: fine grit/20 N, fine grit/40 N, medium grit/20 N, and medium grit/40 N to obtain resin-dentin sticks with a cross-sectional area of 1.0 mm2. Four sticks from the center of each tooth were subjected to the μTBS test. Five remaining sticks of each group were selected for surface topography observation under a scanning electron microscope (SEM). As a result, the bond strength of the medium-grit group was higher than that of the fine-grit group (p < 0.001), whereas the feeding force had no influence on bond strength values (p = 0.648). From the SEM, sticks prepared with the fine-grit blade showed a smoother surface integrity and fewer defects on the specimen edges in comparison with the sticks prepared with the medium-grit blade. The grit type of the blade is one of the considerable factors that may affect the bond strength and the surface integrity of resin-dentin specimens for microtensile testing.


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