Abstract
Aims
The aim of the study was to assess, compare and evaluate the adhesive strength and compressive strength of different brands of glass ionomer cements to a ceramometal alloy.
Materials
(A) Glass ionomer cements: GC Fuji II - GC Corporation, Tokyo; Chem Flex — Dentsply DeTrey, Germany; Glass ionomer FX — Shofu-11, Japan; MR dental — MR Dental Suppliers Pvt. Ltd., England; (B) ceramometal alloy — Ugirex III; (C) cold cure acrylic resin; (E) temperature cum humidity control chamber; and (F) Instron universal testing machine.
Methods
Four different types of glass ionomer cements were used in the study. From each type of the glass ionomer cements, 15 specimens were made to evaluate the compressive strength and adhesive strength, respectively. Fifteen specimens were further divided into 3 subgroups each having 5 specimens. For compressive strength, specimens were tested at 2, 4 and 12 hours by using Instron universal testing machine. To evaluate the adhesive strength, specimens were surface treated with diamond bur, silicone carbide bur and sandblasting, and tested under Instron universal testing machine.
Results and conclusions
It was concluded from the study that the compressive strength as well as the adhesive bond strength of MR dental glass ionomer cement with a ceramometal alloy was found to be maximum compare to other glass ionomer cements. Sandblasting surface treatment of ceramometal alloy was found to be comparatively more effective for adhesive bond strength between alloy and glass ionomer cement.
Keywords: Glass ionomer cement, Ceramometal alloy, Compressive strength, Adhesive strength
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