TINGKAT KEKERASAN PERMUKAAN RESIN KOMPOSIT AKIBAT MASA KEDALUWARSA MATERIAL
Abstract
Methods: This research was an experimental laboratory using post test only with control group design. Samples for this research were 27 divided into 3 groups based on its expiration date (2016, 2018 and 2019). The surface hardness was measured by Shore D Hardness. The result of this research were tested with One Way Anova and Post Hoc test LSD.
Result: The lowest surface hardness result was measured on group 1 (81.02
SHD) and the highest was group 3 (94.72 SHD). The result of One Way Anova test showed that there was signifcant differences in all groups (p<0.05). Post Hoc LSD test showed difference signifcantly between each groups.
Conclusion: It can be concluded that there was signifcant difference of composite resins surface hardness based on material’s expiration date
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DOI: http://dx.doi.org/10.30659/odj.5.1.45-48
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