Volume 4 Issue 1 (January-February), 2018

Original Articles

Comparative Assessment Of Tensile Bond Strength Of Two Commonly Used Dental Luting Agents: An Observational Study
Dr. Harmanjot Kaur Sidhu, Dr Gurtejpal Singh, Dr Gurwant Kaur

Aim: To compare tensile bond strength of Zinc Phosphate and Zinc Polycarboxylate luting cements. Materials & methods: A total of 40 freshly extracted maxillary permanent central incisors were included in the present study. Following extraction, each specimen underwent a thorough washing and drying process, after which they were preserved in containers filled with normal saline. Impressions of the specimens were obtained post-cavity preparation, leading to the creation of castings using dental stones. This casting procedure included the formation of wax patterns, followed by the processes of devesting, finishing, and polishing. For the purpose of analysis, the specimens were randomly divided into two groups: Group 1 was treated with zinc phosphate, while Group 2 was treated with zinc polycarboxylate. Subsequently, sectioning was performed, and the tensile strength of each specimen was assessed using a Universal Testing Machine. Results: Group A exhibited a mean tensile strength of 2.86 MPa with a standard deviation (SD) of 0.37, while Group B demonstrated a mean tensile strength of 2.01 MPa with an SD of 0.30. The p-value for the comparison between these groups is 0.0004, indicating a statistically significant difference in tensile strength between Group A and Group B. Conclusion: Zinc phosphate cement demonstrates a higher tensile bond strength in comparison to polycarboxylate cement, thereby underscoring its longstanding application and dependability in clinical environments. Although both types of cement possess distinct characteristics and possible uses, our research indicates a preference for zinc phosphate cement in situations that require improved mechanical retention.

 
Abstract View | Download PDF | Current Issue