Journal of Conservative Dentistry
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Year : 1999  |  Volume : 2  |  Issue : 3  |  Page : 140-146

An In Vitro Comparison Of The Fracture Resistance Of Class-I Composite Resin Restorations With And Without Glass Ceramic Inserts



Correspondence Address:
Sumita . A Bhagwat


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The present study was conducted to compare the fracture resistance (compressive strength) of composite resin restorations with and without glass ceramic inserts. A total of 40 unrestored, noncarious, permanent, human mandibular molar teeth were selected. The teeth were divided into two groups. Group A: Teeth with class–I (pit) cavity preparations, restored with Prisma TPH composite resin. Group B: Teeth with class-I (pit) cavity preparations, restored with prisma TPH composite resin and Beta Quartz Glass Ceramic Inserts. The specimens were then subjected to a compressive axial load in a triaxial testing machine. The load required to fracture the restorations was noted for each specimen and calculated in kilograms. Results were derived and observations were made. Group B restorations had a much higher resistance to fracture as compared to Group A restorations When subjected to compressive load. The study showed that compressive strength was significantly increased when a composite resin restoration was done with glass ceramic inserts as compared to without glass ceramic inserts.


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