The comparative evaluation of fracture resistance and microleakage in bonded amalgam, amalgam, and composite resins in primary molars.
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Date
2015-09
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Abstract
Background: The intense development of adhesive restorative materials and parents’ preferences
for esthetic restorations prompt clinicians to use alternative restorative materials for primary
molars. Amalgam, however, is the choice of material when it comes to occlusal stress bearing
areas, either in primary or permanent molars. To overcome the drawbacks of amalgam and
restorative adhesive materials, the bonded amalgam technique is employed.
Aims: To evaluate microleakage and fracture resistance of bonded amalgam in primary molars,
and compare it with the microleakage and fracture resistance of high‑copper amalgam and
composite resin materials.
Settings and Design: An in vitro study and 60 caries‑free primary molars were used.
Subjects and Methods: A total of 60 samples were randomly divided into two equal groups for
the evaluation of microleakage and fracture resistance. Class V cavities for microleakage study
prepared on 30 samples and Class II mesio‑occluso‑distal cavities for fracture resistance study
on other 30 samples were prepared and randomly divided into three equal groups. Group I
received amalgam, Group II received bonded amalgam, and Group III received composite resins.
The microleakage was viewed under a stereomicroscope. The fracture resistance was evaluated
using a universal testing machine.
Results: Bonded amalgam exhibited minimum microleakage, when compared to amalgam and
composite resin and was found to be statistically insignificant (P = 0.203), while amalgam
showed better fracture resistance compared to bonded amalgam and composite resin. It was
found to be statistically insignificant (P = 0.144).
Conclusions: Bonded amalgam appears to be comparable to amalgam when microleakage is
considered and to composite resin when fracture resistance is considered; hence, bonded
amalgam can also be an alternative material to amalgam in primary molars.
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Keywords
Amalgam, bonded amalgam, composite resin, fracture resistance, microleakage
Citation
Vanishree H S, Shanthala B M, Bobby W. The comparative evaluation of fracture resistance and microleakage in bonded amalgam, amalgam, and composite resins in primary molars. Indian Journal of Dental Research. 2015 Sept-Oct; 26(5): 446-450.