Original Research Article
Year: 2019 | Month: December | Volume: 6 | Issue: 12 | Pages: 555-561
Comparative Evaluation of Transverse Strength of Provisional Restorative Resins Using Zinc Oxide Eugenol and Non Eugenol Cements - An in Vitro Study
Manju Choudhary
MDS, Prosthodontics, Sikar, Rajasthan
ABSTRACT
A provisional restorative material must be strong enough to resist fracture during function. Fracture resistance of provisional restoration is an important concern for the restorative dentist and it is directly proportional to its transverse strength. The purpose of this in vitro study was the comparative evaluation of transverse strength of provisional restorative resins using zinc oxide eugenol and non eugenol cements.
Objective: An in vitro study was conducted to (a) Study the effect of zinc oxide eugenol cement on transverse strength of provisional restorative materials. (b) Compare the effect of zinc oxide eugenol cement versus non eugenol cement on the transverse strength of provisional restorative materials
Method: In the present study, 30 specimens of each material were obtained. They were coated with zinc oxide eugenol cement and non-eugenol cement ten specimens each. They were stored in water for 7 days and later were conducted to 3 point bending test. For comparison purpose the specimens were divided into 3 sub groups in each group. The control group, eugenol group and non eugenol group were the subgroups, and the results were statistically evaluated.
Results:. All the specimen were subjected to three point bending test with universal strength testing machine at a cross head speed of 1mm / min to obtain fracture strength. The readings were recorded and transverse strength is calculated. The mean of the readings was obtained and comparison was done between the groups and within the groups.
Conclusion: The decrease in strength was highly significant for protemp composite resin followed by DPI self cure acrylic provisional resin. Zinc oxide eugenol cement in comparision to noneugenol cement affects the transverse strength of provisional restorative materials significantly.
Key words: Flexural strength, provisional restorations, zinc oxide eugenol, non eugenol, resin cements
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