Journal of Iranian Dental Association
J Iran Dent Assoc
Medical Sciences
http://jida.ir
23
journal23
2383-3041
10.52547/jida
en
jalali
1393
4
1
gregorian
2014
7
1
26
3
online
1
fulltext
en
اثر حذف حلال بر قدرت باند ریزکششی سیستمهای Etch and Rins با اعمال فشار ادهزیو به عاج خشک و مرطوب
Effect of Solvent Removal on Microtensile Bond Strength of Etch and Rinse Systems under Vigorous Application to Wet and Dry Dentin
Restorative Dentistry
Restorative Dentistry
Original
Original
<p> <strong> Background and Aim </strong><strong>: </strong>Adhesive systems are commonly used<strong> </strong>for restorative dental procedures. Solvent removal my be effective for increasing the microtensile bond strength of etch and rinse systems to dentin. The aim of this study was to evaluate the effect of solvent removal on microtensile bond strength of etch and rinse systems to wet and dry dentin .</p>
<p> <strong> Materials and Methods </strong><strong>: </strong>This in-vitro study was conducted on 40 intact human extracted third molars . A flat superficial dentin surface was exposed by wet abrasion. The specimens were randomly assigned to five groups. Two coats of the solvent-based (SB) and solvent-free (SF) adhesives were applied to dry (D) or rewetted (W) surfaces, under vigorous rubbing action after phosphoric acid etching according to the manufacturer’s instructions. The examined groups included: group one: adhesive with solvent on dry dentin, group two: adhesive without solvent on dry dentin, group three: adhesive with solvent on wet dentin, group 4: adhesive without solvent on wet dentin and group 5 (control group). After light curing (600mW/cm²/10 s), composite build-ups were constructed incrementally and specimens were stored in water (37 ° C/24 h). They were longitudinally sectioned in the “x” and “y” directions to obtain bonded sticks (1mm²) for immediate testing at a crosshead speed of 1 mm/min. The resultant bond strength was expressed for different fracture patterns. The microshear bond strength test was carried out in a Universal Testing Machine. The data were analyzed using two-way ANOVA. All statistical analyses were performed using SPSS version 2 software. P<0.05 was considered significant .</p>
<p> <strong> Results </strong><strong>: </strong>The highest bond strength was achieved in group 1 and the lowest in group 4 but the differences among groups in this respect were not statistically significant .</p>
<p> <strong> Conclusion </strong><strong>: </strong>Within the limitations of this study, the results showed that presence of solvent was not essential to achieve high bond strength values to dry and wet dentin when applied vigorously .</p>
<p></p>
Adhesive system , Solvent , Moisture , Bond strength
190
196
http://jida.ir/browse.php?a_code=A-10-1-774&slc_lang=en&sid=1
Mansoreh
Mirzaei
2300319475328460019710
2300319475328460019710
No
Member of Dental Research Center and Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran.
Esmaeil
Yassini
yassini_e@yahoo.com
2300319475328460019711
2300319475328460019711
Yes
Member of Dental Research Center and Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran
Farzaneh
Aghagani
2300319475328460019712
2300319475328460019712
No
Researcher & Member of Dental research center, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran
Narges
Ezzati Givii
2300319475328460019713
2300319475328460019713
No
Postgraduate Student, Department of Periodontology, School of Dentistry, Ahvaz University of Medical Sciences. Ahvaz, Iran
Mohammad Javad
Kharazi Fard
دکتر محمدجواد
خرازی فرد
2300319475328460019714
2300319475328460019714
No
Research Member of Dental Research Center Tehran University of Medical Sciences. Tehran, Iran