Ten-year observation of dentin bonding durability of 4-META/MMA-TBB resin cement -a SEM and TEM study

被引：12

作者：

Aoki, Kanako ^{[1
]}

Kitasako, Yuichi ^{[1
]}

Ichinose, Shizuko ^{[2
]}

Burrow, Michael F. ^{[3
]}

Ariyoshi, Meu ^{[1
]}

Nikaido, Toru ^{[1
]}

Tagami, Junji ^{[1
,4
]}

机构：

[1] Tokyo Med & Dent Univ, Dept Restorat Sci, Grad Sch Med & Dent Sci, Bunkyo Ku, Tokyo 1138549, Japan

[2] Tokyo Med & Dent Univ, Instrumental Anal Res Ctr, Bunkyo Ku, Tokyo 1138510, Japan

[3] Univ Hong Kong, Fac Dent, Prince Philip Dent Hosp, Pokfulam, Hong Kong, Peoples R China

[4] Tokyo Med & Dent Univ, Global Ctr Excellence Program, Int Res Ctr Mol Sci Tooth & Bone Dis, Bunkyo Ku, Tokyo 1138549, Japan

来源：

DENTAL MATERIALS JOURNAL | 2011年 / 30卷 / 04期

基金：

日本学术振兴会;

关键词：

Bond durability; Resin cement; Tensile bond test; SEM; TEM; LONG-TERM DURABILITY; IN-VIVO; DEGRADATION; STRENGTH; ADHESION; NANOLEAKAGE; INTERFACE; COLLAGEN;

D O I：

10.4012/dmj.2011-003

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

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 nanoleakage at the base of the hybrid layer after 10 y. The bond strength of SB to dentin significantly decreased, and the hybrid layer degraded, while the overlying hydrophobic resin layer showed little disintegration over 10 y.

引用

页码：438 / 447

页数：10

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