Year : 2017

Volume : Volume 7

Issue : Issue 1

Address for correspondence :
Dr. Vineet Kumar
VineetKumar@gmail.com

Abstract

Aim:  Aim of the study is to evaluate and compare the impact strength and flexure strength of heat curedLucitone199, microwave cured-Vipi Wave and glass-fibre modified Lucitone199 denture base materials. Material & Methods: The materials were used are Heat cure poly (methacrylate) denture base resin Lucitone 199 (Dentsply York Division USA), Microwave cured denture base material- Vipi Wave (VIPI Industria, odontologics Ltd. Brasil) & 2% Glass-fibres modified Lucitone199 (Mechan Co. Ind, Mumbia). A total of 120 specimens were made and divided equally into three groups (Group A, B and C). Each group contained 40 specimens and in each group 20 specimens of dimensions 65mm x 10mm x 2.5mm were used to evaluate flexure strength and another 20 specimens of each group with dimension 60mm x 7.5mm x 4mm were used to evaluate impact strength. Results: The data obtained were subjected to statistical analysis. Mean, standard deviation and standard error were calculated, with the one-way analysis of variance (ANOVA) test followed by Post hoc tukey’s test used to determine the level of significance and for multiple group wise comparison. Student t-test was also performed for pair wise comparison. Results revealed that glass fibre modified Lucitone 199 shows statistically higher significant values in relation to impact strength and flexure strength as compared to Microwave cured denture base material- Vipi Wave and Heat cure poly (methacrylate) denture base resin Lucitone 199. There were intergroup differences in the values the groups showed statistically significant difference in their transverse strengths and impact strength. Conclusion: Among the different denture base materials used in the study Glass fibre reinforced proved to have better transverse and impact strength, followed by this is denture base resin. Keywords: flexure strength, impact strength.