Journal article
Ten-year observation of dentin bonding durability of 4-META/MMA-TBB resin cement -a SEM and TEM study
Kanako Aoki, Yuichi Kitasako, Shizuko Ichinose, Michael F Burrow, Meu Ariyoshi, Toru Nikaido, Junji Tagami
Dental Materials Journal | JAPANESE SOC DENTAL MATERIALS DEVICES | Published : 2011
DOI: 10.4012/dmj.2011-003
Abstract
This study aimed to assess dentin bond durability of 4-META/MMA-TBB resin cement over ten years, by evaluating the tensile bond strength, and SEM and TEM observations. Tensile bond strength of Super Bond C&B (SB) to bovine dentin was evaluated at 1 day and after 10 years. The mode of failure after debonding was observed by SEM. Interfacial ultrastructure and nanoleakage was observed by TEM at the baseline and after 10 y. The tensile bond strength significantly dropped after 10 y. The failure pattern shifted from cohesive failure in resin towards adhesive failure or cohesive failure in dentin. TEM observation revealed degradation of both resin and collagen networks within the hybrid layer and..
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Awarded by Japan Society for the Promotion of Science
Funding Acknowledgements
This work was supported by the grant #21592413 from the Japan Society for the Promotion of Science, and from the Japanese Ministry of Education, Global Center of Excellence (GCOE) Program, "International Research Center for Molecular Science in Tooth and Bone Diseases". The authors would like to thank Mr. Akihiko Watanabe and Dr. Alireza Sadr for their helpful advice toward this manuscript.