Adhesive Dentistry
Online ISSN : 2185-9566
Print ISSN : 0913-1655
ISSN-L : 0913-1655
Volume 23, Issue 3
Displaying 1-6 of 6 articles from this issue
  • Yasumitsu TAKABATAKE, Toshiyuki ITOTA, Junichi DOI, Kumiko TANAKA, Yos ...
    2005 Volume 23 Issue 3 Pages 183-189
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The aim of this study was to investigate the effect of shortening of priming time on bond strength of self-etching primer adhesive systems to human enamel and dentin.
    Two commercial self-etching primer adhesive systems, Clearfil SE Bond (MB) and One-up Bond F (OBF), were used. Enamel and dentin were treated with each system with various priming times (5, 10, and 20 seconds), and the microtensile bond strength was measured. Scanning electron microscopic (SEM) observation was also performed to examine the effect of priming time on the morphology of the bonding interface.
    Although there were no significant differences on bond strength to enamel among the priming times, the bond strength to dentin decreased significantly with the shortening of priming time except for the MB groups primed for 20and60seconds. SEM observation revealed that resin-tag penetrated into the dentin more deeply with extension of priming time.
    In conclusion, a shortened priming time should be avoided for the sufficient bonding property of self-etching adhesive systems to tooth substrate.
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  • Masaya KIYOMURA, Noboru YASUDA
    2005 Volume 23 Issue 3 Pages 190-201
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The purpose of this study was to estimate the influence of the film thickness of the resin bonding layer on the tensile bond strength and on the adaptation rate to the cavo-dentin surface. Three2-step self-etching resin bonding systems (Unifil Bond: UB, Imperva Fluoro Bond: FB and Clearfil Mega Bond: MB) and three1-step selfetching resin bonding systems (AQ Bond Plus: AQP, One-Up Bond F: OUB and Reactmer Bond: RMB) were used in this study. Thickness of the bonding resin was controlled by using a three-way air syringe in accordance with the manufacturer's instructions after the application of the bonding agent. The results were as follows:
    1. All systems demonstrated good bonding performances when the manufacturer's instructions were strictly obeyed. TBSs (MPa) to enamel/dentin were10.1/9.3for UB, 11.4/8.9for FB, 13.4/13.6for MB, 13.3/13.4for AQP, 12.5/12.1for OUB and13.5/11.9for RMB.2. All resin bonding systems except for AQP formed thin film by a brief strong burst of air next to application. After execution of air burst following air blow with the strength as on manufacturer's instructions, the film thickness (μm) of the bonding resin decreased from63.9to3.3for UB, from66.6to2.1for FB, from73.1to5.8for MB, from2.5to1.3for AQP, from93.5to1.1for OUB, and from68.7to2.5for RMB.
    3. The bond strength to enamel was not affected by strong air in any systems.
    4. When the strong air was used, TBS of OUB to dentin and the adaptation rate to dentin cavity wall of UB and OUB decreased with statistical significance.
    5. It was concluded that MB, AQP and RMB were less technique-sensitive in terms of the strength of the air, since they demonstrated high TBS and adaptation rate under the strong air.
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  • Masao HANABUSA, Naotake AKIMOTO, Yasuko MOMOI
    2005 Volume 23 Issue 3 Pages 202-213
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    Recently, manufacturers have launched the novel resin adhesive called one-bottle self-adhesive, which combines three fundamental functions for tooth-adhesion, etching, priming and bonding. We speculated that the bond strength could be influenced by the difference in the quality of smear layer generated on the dentin surface. Extracted human molars were used and three different dentin surfaces were created using #180-, #600-and mirror-grinding. The mirror-grinding using diamond paste was selected to produce the dentin surface without smear layer. According to each manufacturers' instruction, adhesives were applied to prepared dentin surface followed by a resin composite building. Specimens were then stored in distilled water at37°C. After24h the microtensile bond test was performed using universal testing machine (Type4443Instron) with the bonded area of1.5× 1.0mm in the cross-head speed of1.0mm/min. The resin-dentin interface was observed by FE-SEM. There was no significant difference in the bond strength of three different dentin surfaces in each product. FE-SEM observation demonstrated slight of demineralization occurred on the dentin surfaces. It is considered that the one-bottle self-adhesives were capable of dissolving and removing smear layer of different kind and partially demineralized the dentin, then penetrated and diffused into the dentin simultaneously. We conclude that the bond strength of4 products categorized into the one-bottle self-adhesives, was not influenced by the differences in the condition of dentin surface.
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  • Jumpei SUGIZAKI, Makoto MORIGAMI, Shigeru UNO, Toshimoto YAMADA
    2005 Volume 23 Issue 3 Pages 214-217
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The Xeno CF II Bond developed by Dentsply Sankin Co.Ltd. in2001is a two-bottle, one-step self-etching adhesive system, containing the fluoride-releasing phosphazen monomer. This study is a clinical trial to determine the short-term efficacy of this system with fluoride-releasing restorative material, Xeno CF paste. A total of 30 restorations were placed in30human subjects in minimally invasive Class V and V-shaped cervical cavities in permanent teeth by two operators. The baseline records were made immediately after placement according to the American Dental Association for assessment. Patients were followed up routinely at recall intervals up to18 months and the restorations were evaluated for clinical acceptability. At eighteen months, all the restorations that were reviewed during the eighteen-month period were satisfactory in all clinical specified and rated Alpha categories. No restorations were recorded with Bravo or Charlie. The Kaplan-Meier probability of survival rate for these restorations at eighteen months is1.00. As a result, the short-term clinical performance with the Xeno CF II Bond was very safe at18months after placement, and this system was noted to be promising for the minimally invasive resin composite restorations.
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  • Seiko YAMAMOTO, Jumpei SUGIZAKI, Shigeru UNO, Toshimoto YAMADA
    2005 Volume 23 Issue 3 Pages 218-223
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    In order to enhance adhesive effectiveness of the commercially available Imperva Fluor bond by Shofu Inc, which contains4-AET and4-AETA as adhesion promoting monomers, a newly designed2bottle/2step selfetching adhesive (SI-R20401) was developed containing carboxylic and phosphate monomers. The interfacial ultrastructure between the resin bonding and enamel⁄dentin was examined under the FE-SEM after Ar ion-beam etching together with an experimental resin composite (SI-R20402G). It was revealed that the resin bonding showed a tight connection to enamel, intact dentin, and caries-affected dentin, suggesting that this resin bonding system might be a useful adhesive in clinics.
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  • Committee on Medical Care and Education
    2005 Volume 23 Issue 3 Pages 224-230
    Published: December 05, 2005
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
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