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| ORIGINAL RESEARCH |
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| Year : 2014 |
Volume
: 25 | Issue : 1 | Page
: 73-77 |
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A comparative evaluation of compressive strength of Portland cement with zinc oxide eugenol and Polymer-reinforced cement: An in vitro analysis
S Prakasam1, Prakasam Bharadwaj1, SC Loganathan2, B Krishna Prasanth3
1 Department of Conservative Dentistry and Endodontics, Sathyabama Dental College and Hospital, Chennai, India
2 Department of Conservative Dentistry and Endodontics, Thai Moogambigai Dental College and Hospital, Chennai, India
3 Department of Prosthodontics, Sree Balaji Dental College and Hospital, Chennai, India
Correspondence Address:
B Krishna Prasanth
Department of Prosthodontics, Sree Balaji Dental College and Hospital, Chennai
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-9290.131135
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Objective: The purpose of this study is to evaluate the ultimate compressive strength of 50% and 25% Portland cement mixed with Polymer-reinforced zinc oxide eugenol and zinc oxide eugenol cement after 1 hour, 24 hours, and 7 days.
Materials and Methods: One hundred and eighty samples were selected. The samples were made cylindrical of size 6 × 8 mm and were divided into six groups as follows with each group consisting of 10 samples.
Group 1: Polymer-reinforced zinc oxide eugenol with 50% Portland cement (PMZNPC 50%)
Group 2: Polymer-reinforced zinc oxide eugenol with 25% Portland cement (PMZNPC 25%)
Group 3: Polymer-reinforced zinc oxide eugenol with 0% Portland cement (PMZNPC 0%)
Group 4: Zinc oxide eugenol with 50% Portland cement (ZNPC 50%)
Group 5: Zinc oxide eugenol with 25% Portland cement (ZNPC 25%)
Group 6: Zinc oxide eugenol with 0% Portland cement (ZNPC 0%)
These samples were further subdivided based on time interval and were tested at 1 hour, 24 hours and at 7 th day. After each period of time all the specimens were tested by vertical CVR loaded frame with capacity of 5 tones/0473-10kan National Physical laboratory, New Delhi and the results were statistically analyzed using ANOVA and Scheffe test.
Results: Polymer-reinforced cement with 50% Portland cement, Zinc oxide with 50% Portland cement, Polymer-reinforced cement with 25% Portland cement and Zinc oxide with 25% Portland cement exhibited higher compressive strength when compared to Zinc oxide with 0% Portland cement and Polymer-reinforced cement with 0% Portland cement, at different periods of time. The difference between these two groups were statistically significant (P < 0.05) and it is suggested that mixture of 50% and 25% Portland cement in Zinc oxide eugenol and Polymer-modified zinc oxide cement can be used as core build up material and permanent filling material.
Conclusion: It is concluded that 50% and 25% Portland cement in zinc oxide eugenol and polymer-modified zinc oxide eugenol results in higher compressive strength and hence can be used as permanent filling material and core built-up material. |
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