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ORIGINAL RESEARCH Table of Contents   
Year : 2021  |  Volume : 32  |  Issue : 4  |  Page : 500-504
A comparative evaluation of colour stability of different resin cements and its influence on the final shade of All-Ceramic Restorations: An in-vitro Study


1 Department of Prosthodontics, Rajaram Dental Clinic, Mumbai, India
2 Department of Periodontics, D. Y. Patil University, School of Dentistry, Nerul, Navi Mumbai, India
3 Department of Prosthodontics & Implantology, M. A. Rangoonwala College of Dental Sciences & Research Centre, Pune, Maharashtra, India

Correspondence Address:
Dr. Suraj D Khalap
14, 10th Floor, Soham Building, Taikalwadi, Matunga West, Mumbai - 400 016, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijdr.ijdr_326_21

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Introduction: Colour changes of the luting material can become clinically visible affecting the aesthetic appearance of thin ceramic veneers. Therefore, unfortunately, the long-term success of veneers is tied to the colour stability of the luting agent used to cement them. Aim: To compare the colour stability of different resin cements and its influence on the final shade of overlying ceramic using two different thicknesses of ceramic. Material and Methodology: Sixty disc-shaped specimens of high translucency (HT) A2 shade of two thicknesses (0.5 mm & 1 mm) were prepared from lithium disilicate glass-ceramic. The discs of each thickness were further divided into three groups randomly depending upon the resin cements used. Group A – light cure resin cement – Variolink N LC by Ivoclar Vivadent in clear shade, Group B – base paste of dual-cure resin cement – Variolink N by Ivoclar Vivadent in transparent shade and Group C dual-cure resin cement – Clearfil esthetic cement EX by Kuraray in clear shade were used to compare their colour stability. A spectrophotometer was used for the colour measurements of the specimens before and after accelerated ageing. The colour stability was determined by colour differences (ΔE) using the coordinates L*, a* and b* in the pre and post accelerated ageing. Results: On comparing the three resin cements, Group A showed the lowest ΔE, whereas the highest ΔE was observed in Group B. This finding was constant for discs of both thicknesses. Conclusion: Even though statistically significant results were observed between the groups, they were not visibly differentiable.


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