Effect of thermocycling on the colour stability of aesthetic restorative materials: An in-vitro spectrophotometric analysis

Bhattacharya, Swastika and Purayil, Tina Puthen and Ginjupalli, Kishore and Kini, Sandya K and Pai, Swathi (2020) Effect of thermocycling on the colour stability of aesthetic restorative materials: An in-vitro spectrophotometric analysis. Pesquisa Brasileira em Odontopediatria e Cl�ca Integrada, 20. pp. 1-6. ISSN 1519-0501

[img] PDF
RMS - 00008069.pdf - Published Version
Restricted to Registered users only

Download (221kB) | Request a copy

Abstract

Objective: To compare the color stability of Cention N, Fuji IX GP Extra, and Fuji IX GP after thermocycling. Material and Methods: Ten discs of each material of dimension 10 x 1 mm were prepared using a split mold. The preparations of the specimens were done according to the powder/liquid ratio as recommended by the manufacturers [4.6:1, 3.4:1 and 3.6:1 for the groups I, II, and III, respectively]. After setting, the samples were retrieved, and the thickness of each specimen was measured using a micrometer at five different locations. The specimens with variations in thickness, porosity or cracks were discarded and thus not included in the study. The selected specimens were stored in distilled water for 24 hours prior to testing. The prepared specimens were thermocycled at 5°C and 55°C, with a dwell time of 15 seconds for 250 or 500 cycles. Subsequently, the color parameters of the discs were measured using a spectrophotometer. The data were analyzed using two way ANOVA test, and a p-value <0.001 was considered. Results: Thermocycling resulted in changes in the color of both Glass Ionomer cement and Cention N (p<0.001). Among the materials tested, Cention N showed superior color stability. Conclusion: Cention N exhibited better color stability compared to Glass ionomer cements.

Item Type: Article
Uncontrolled Keywords: Dental materials; glass ionomer cements; esthetics, dental.
Subjects: Dentistry > MCODS Manipal > Conservative Dentistry and Endontics
Dentistry > MCODS Manipal > Dental Materials
Depositing User: KMC Library
Date Deposited: 27 Jun 2020 08:29
Last Modified: 27 Jun 2020 08:29
URI: http://eprints.manipal.edu/id/eprint/155280

Actions (login required)

View Item View Item