Effect of Thermocycling on the Colour Stability of Aesthetic Restorative Materials: An in-vitro Spectrophotometric Analysis

Abstract

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.

Evaluation of the color stability and surface roughness of dual-cure, bulk-fill composites

“…In our study, no statistically significant difference was observed when the surface roughness values (Ra) of the Cention-N composite were compared with the other composite groups (p>0.05). In the study of Bhattacharya et al investigating the effect of thermal cycle on color stability in various composites, it was stated that Cention-N composite showed better color stability compared to Fuji IX GP and Fuji IX GP Extra (16). Our study determined that Cention-N samples polymerized with light have the lowest ΔE00 values in all solution types.…”

Effect of Thermocycling on Colour Stability of Alkasite Restorative Material (Cention N) - An In Vitro Study

“…The materials were separated into three categories. From the result he concluded that Cention N had superior color stability when compared to glass ionomer cement material [23]. Similarly, our study had better color stability in thermocycled cention N samples.…”

Comparative assessment of antibacterial activity and fluoride release potential of Cention-N and different bioactive restorative materials: An in vitro study

“…In this study Cention-N presented high antibacterial activity as it in acidic PH. due to presence of bacteria, released higher amounts of fluoride ion, the probable description is that Cention-N may responded more forcefully in the existence of acidic situation where possibly the surface unaffected layer may washed-out quicker, so baring the matrix for improved liberation of fluoride ions (5) . Moreover, Cention-N revealed elevated alkalizing ability in acidic pH.…”

“…Moreover, Cention-N revealed elevated alkalizing ability in acidic pH. This could be owing to the hydroxyl and calcium ions liberate by alkaline glass fillers from Cention-N, that are capable to have exact influence on the pH levels, thus producing environments where the additional acidity owing to cariogenic bacterial activity could be counteracted (5) .…”

“…This material has reasonably more transparency when matched to other glassionomer products, hence getting improved aesthetic properties. (4,5) Additionally, it has enhanced compressive strength. In contrast to its equivalents, Cention N has more various uses.…”