eISSN: 2299-551X
ISSN: 0011-4553
Journal of Stomatology
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4/2021
vol. 74
 
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abstract:
Original paper

In vitro evaluation of micro-leakage of a universal adhesive used with different etching modes in compomer restorations

Betul Busra Ursavas
1
,
Tugba Bezgin
1
,
Mert Ocak
2
,
Burak Bilecenoglu
3
,
Ayşe Işıl Orhan
4

  1. Department of Pediatric Dentistry, Faculty of Dentistry, Ankara University, Ankara, Turkey
  2. Department of Anatomy, Faculty of Dentistry, Ankara University, Ankara, Turkey
  3. Department of Anatomy, Faculty of Medicine, Ankara Medipol University, Ankara, Turkey
  4. Department of Pediatric Dentistry, Faculty of Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey
J Stoma 2021; 74, 4: 236-242
Online publish date: 2021/12/19
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Introduction
In order to obtain a good prognosis in resin restorations, a strong adhesion not allowing leakage between tooth tissues and restoration should be provided. Effectiveness of universal adhesives on leakage in primary teeth compomer restorations has not been studied.

Objectives: The objective of this study was to evaluate sealing ability of a universal adhesive used with different etching modes after 1- and 3-year of artificial aging in compomer restorations of primary teeth.

Material and methods
Sixty-three extracted mandibular primary second molars were used in the study. Class II box cavities (3 mm × 3 mm × 1.5 mm) were prepared in each tooth. Then, teeth were divided into three groups (n = 21), including total-etch, self-etch, and selective-etch modes. All teeth were restored with compomer (Dyract Extra, Dentsply; Konstanz, Germany) after universal adhesive (Prime & Bond Elect Universal, Denstsply; Milford, USA) application. Teeth were divided into three sub-groups (n = 7) with the following three different aging protocols: 24 h water storage, 1-year aging, and 3-year aging with chewing simulator (Esetron Chewing Simulator; Ankara, Turkey). 50% silver nitrate solution was applied as a tracer, and its’ penetration was analyzed in mm3 using micro-computed tomography system (SkyScan 1275; Kontich, Belgium). Data was analyzed with Kruskal-Wallis H and Friedman tests.

Results
One-year aging significantly increased the leakage in self-etch group of samples (0.197 ± 0.49 mm3) compared to the total-etch (0.001 ± 0.000 mm3) and selective-etch (0.001 ± 0.000 mm3) groups (p < 0.05). There was no difference between the groups at baseline and after the 3-year artificial aging (p > 0.05).

Conclusions
Self-etch mode of adhesive revealed higher micro-leakage levels at all examination intervals; however, the difference was only significant after the 1-year aging. It can be concluded that universal adhesives can be used with all etching modes in compomer restorations.

keywords:

compomer, micro-leakage, universal adhesive

 
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