Abstract
This in vitro investigation assesses the marginal leakage of extensive class II preparations that had been restored with light-cured posterior composite materials using dentine-bonding agents or glass-ionomer cement linings. The restored teeth were immersed in a marker dye solution while being subjected to thermal cycling treatment and, after sectioning the restorations, dye penetration at the restoration/tooth interface was assessed and quantified using digital imaging microscopy. Microleakage was observed at the cervical wall of all the restorations and was more extensive when the cervical cavity margin was located below the cemento-enamel junction. The use of a glass-ionomer cement lining significantly reduced the extent of cervical marginal leakage in this situation. Continued development of dentine-bonding agents and/or composite resin restoratives is required before a satisfactory marginal seal can be guaranteed when using these materials in the restoration of extensive cavities in posterior teeth.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
