Stereomicroscopic Evaluation of the Adaptability Of Different Retro filling Materials (In Vitro Study(
DOI:
https://doi.org/10.32828/mdj.v5i2.516Abstract
The purpose of this in vitro study was to evaluate the marginal interfaces between
tooth structure and the retro-filling materials.
Sixty teeth were divided into six groups of ten for each. The teeth were
instrumented to a minimum of size no. 45 k-file, obturated with gutta-percha, resected
perpendicular to their long axes and prepared to receive a retro-filling. The teeth were
filled with amalgam, resin-modified GIC or light-cured composite resin. Each filling
material was either applied with dentin adhesive or without dentin adhesive.
Photomicrographs were made & examined by four evaluators.
Statistical analysis of the results revealed that the composite resin had better
marginal adaptation than the amalgam & the glass ionomer cement, but the difference
was non significant (p>0.05). In addition, the non-adhesive groups together had less
marginal adaptation than the other groups and the difference was significant (p<0.05).
Composite resin retro-filling material had better marginal adaptation than other
materials used and the dentin adhesive may have effect on the quality of the
adaptation.
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