Student Theses, Dissertations and Capstones

Document Type

Thesis - NSU Access Only

Degree Name

Master of Science (M.S.) in Dentistry

Copyright Statement

All rights reserved. This publication is intended for use solely by faculty, students, and staff of Nova Southeastern University. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, now known or later developed, including but not limited to photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author or the publisher.

Department

College of Dental Medicine

First Advisor

Cristina Godoy

Date of original Performance / Presentation

January 2022

Publication Date / Copyright Date

1-1-2022

Abstract

Background: Resin cements available for luting permanent prosthesis can vary in optical properties. One of the major concerns with resin cements is maintaining optimal characteristics without changing the color of the material. This leads to changes in the final color of restorations over time. Currently, there are no commercially available resin cements claiming no color change over time. Objectives: The aim of this study was to evaluate the optical properties of different resin cements materials using different polymerization methods after water aging. Methods: A total of 60 disk-shaped specimens were created using prefabricated molds. Each specimen measured 1mm in thickness and 12mm in diameter. The specimens were divided into two groups: Light-cure resin cements and dark-cure resin cements. In each group, there were five different resin cements. Optical properties and color stability were measured using a spectrophotometer at baseline, 24hrs, 1 week, 4 weeks, and 8 weeks after water aging. The translucency was measured using the CIEDE2000 color difference method. The data was statistically analyzed to evaluate the difference in optical properties between examined groups. Results: All composite resin cements tested showed significant changes in color after 8 weeks of immersion in deionized water, except for Variolink Esthetic in light-cured group. The most color change for all the resin cement materials occurred during the first 24 hours. All tested groups showed significant changes in translucency. Conclusion: Dark-cured resin cement materials showed more color changes than light-cured resin cement materials after 8 weeks. Further clinical trials are necessary to evaluate color stability and translucency for resin cement materials.

Disciplines

Dentistry

Keywords

Color; Composite; Optical; Resin Cement

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