Year : 2019

Volume : Volume 10

Issue : Issue 3

Address for correspondence :
Dr. Kriti Garg.
KritiGarg@gmail.com

Abstract

Background:  The mechanism by which metal burs remove tooth structure differs from the abrading action of a diamond rotary instrument. Dental cement must be used as a barrier against microbial leakage, sealing the interface between the tooth and restoration and holding them together through some form of surface attachment. Hence; the present study conducted for comparing the tensile bond strength of three different luting cement (Zinc phosphate, Zinc polycarboxylate, and Glass ionomer GC Fuji 1 radio-opaque luting agent) used in dentistry.  Materials & methods: A total of 30 freshly extracted maxillary first premolars were included in the present study. After a thorough cleaning, all the specimens were stored in normal saline until further use. After finishing of the cavity preparation, the impression was taken of all the specimens followed by pouring of casts with type IV dental stones. Wax patterns were made, and casting was done. Afterwards, the castings were devested, finished and polished. All the specimens were divided into three study groups as follows: Group 1: A zinc phosphate group, Group 2: Zinc polycarboxylate group, and Group 3: Glass ionomer group. All the samples were luted according to their respective groups. Universal Testing Machine was used for evaluation of mean tensile strength.  Results: Mean tensile strength of specimens of Group 1, Group 2 and Group 3 was found to be 1.72 MPa, 0.86 MPa and 1.69 MPa respectively. While analyzing statistically, significant results were obtained on comparing the mean tensile strength in-between group 1 and group 2 and in-between group 1 and group 3. Conclusion: Mean tensile strength of Zinc phosphate cement and Glass ionomer cement is significantly higher in comparison to Zinc polycarboxylate group.

Keywords: Dental cement, Tensile strength.