Adhesive Dentistry
Online ISSN : 2185-9566
Print ISSN : 0913-1655
ISSN-L : 0913-1655
Volume 15, Issue 2
Displaying 1-9 of 9 articles from this issue
  • Kunitaka Hotta, Kunimichi Soma, Nobuo Nakabayashi
    1997 Volume 15 Issue 2 Pages 127-133
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    On the adheesion to the enamel, the point which seemed to be characteristic was reported in the field of the orthodontics. One is the relation between the degree of demineralization with etchants and the bond strength. Another is the change of the enamel surface after the removal of orthodontic apparatus. It is effective to use the adhesive with the good diffusivity, in order to abtain the high bond strength, even if the decalcification quantity is reduced in the etching. The resin with the high capability of diffusion is excellent in increasing the acid resistance of the enamel surface part. For acid resistance of the tooth substrates and approach of raising the dental caries-proofness, the adhesive is applied to decalcified tooth surface, and what is called hybrid (resin impregnation) layer is formed, and it is completely common with other field.
    Download PDF (1119K)
  • Part2. Modification of Super Bond Station
    Tatsutomi Watanabe, Akira Manabe, Ken'ichi Kobayashi, Masanori Nagao
    1997 Volume 15 Issue 2 Pages 134-140
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    4-META/MMA-TBB Resin (Super Bond C & B) has many advantages and has been used in dental treatments. However the complicated using procedure has many problems. Especially in moist and high temperature condition, the increase of viscosity is so faster that the working-time is shorter. In order to solve this problem, to cool the dappen dish was commonly used. But it was difficult to adapt this material for cementing many abutments even if the dappen dish was cooled. To solve this problem easily, we developed “Super Bond Station” for keeping low temperature and anti-dwelling on the surface of the cooled dappen dish, and have already reported. We modified the Super Bond Station in respect of easy operation with the effect of maintaining the cooled air. We estimate the modified Super Bond Station and confirmed the easy operation, the reduction of humidity and the effect of maintaining the cooled air. In this study, we reported the availability of the modified Super Bond Station.
    Download PDF (933K)
  • S. B. Mitra, W. T. Conway, Yoshihisa Miyazaki
    1997 Volume 15 Issue 2 Pages 141-147
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    There were servaral commercial available products of methacrylate-modified Glass Ionomer in U.S.A.
    The objective of this investigation was to study the thermal expansion behavior of these products. Five products were chosen and cylindrical specimens were prepared by packing the mixes of each material into Teflon molds 3mm in diameter and 3mm in height and then either light-curing, or allowing to self-cure at 37°C and 80% RH. Silux-Plus was used for the comparison as resin-based resstorative. The samples were aged in distilled water at 37°C prior to measurement. The samples were scanned in a thermomechanical analyzer (Perkin-Elmer 7 series Thermal Analysis System) between the temperature range of 2-60°C at a rate of 5°C/minute. The coefficient of thermal expansion for each material (N=4) was calculated.
    Download PDF (847K)
  • SEM observation on dentin-cement interface at the difference of the tooth conditioning methods
    Shin-ichi Kato, Satoshi Tosaki, Kazuo Hirota
    1997 Volume 15 Issue 2 Pages 148-156
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The purpose of this study was to investigate the dentin-cement interface for dental luting cements of newly developed Glass Ionomer-Resin cement “Fuji LUTE” etc. using SEM.
    For Fuji LUTE, the hybrid layer was observed in the superficial layer of dentin only after treatment with Fuji LUTE conditioner (10% citric acid, 2% ferric chloride).
    This hybrid layer was acid-resistant layer similar to resin hybrid layer. With 10% citric acid treatment and no treatment, the hybrid layer was not observed.
    For Vitremer Luting Cement, the hybrid layer was not observed.
    Download PDF (2729K)
  • Masashi Miyazaki, Hideo Onose
    1997 Volume 15 Issue 2 Pages 157-162
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The percentage of elderly people in the population over the world is increasing, and the demand of restoration for root carties is rapidly increasing. Treatment of the cervical area is sometimes difficult because the characteristics of caries lesion of root surface are different from those of coronal lesion. For root surface caries, esthetic restorative materials which have a bonding ability to the tooth are suitables. Currently available bonding systems have the promise of higher and more reliable bond strengthe while claiming to reduce technical sensitivities. When using the dentin bonding restorative materials, clinicians must be aware of factors that contribute to achieving excellent results.
    Download PDF (900K)
  • Shiro Suzuki
    1997 Volume 15 Issue 2 Pages 163-169
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The selection of restorative materials used for cervical areas including root surfaces is not simple due to the complexity of these defect areas. The copolymerized microfilled composit resin restrative (Epic-TMPT) in conjunction with the 4-META bonding resin (Amalgambond) has been clinically evaluted as an effective restorative material for the abfraction defect. The one year retention rate of 87% was deemed as a good result since no retentive undercuts were prepared within the defects. Although this restorative system is able to reinforce the tooth, the further improvement is essential in order to overcome clinical problems.
    Download PDF (1644K)
  • Shigehisa Inokoshi, Patricia N. R. Pereira, Toshimoto Yamada, Junji Ta ...
    1997 Volume 15 Issue 2 Pages 170-174
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    Root caries presents some specific operative difficulties relating to access and retention of the restoration. Cavity preparation on the root surface may also be complicated by pulp exposure since the pulp hamber and root canal are soon reached. In addition, restoration may be required to avoid sensitivity, to protect the pulp and facilitate meticulous oral hygiene. Adhesive materials are the best choice for restoration of the root caries, since tooth reduction decreases by avoiding mechanical retention, and marginal seal prevents bacterial leakage. However, adhesive materials, either an adhesive resin or glass-ionomer materials, prevented wall lesion formation by marginal leakage, but failed to inhibit outer lesion formation. Therefore, restorations do not prevent caries, even if adhesive materials are used. Patients should be informed to prevent further disease by dietary advice and plaque control.
    Download PDF (911K)
  • Mitsuo Nakamura
    1997 Volume 15 Issue 2 Pages 175-180
    Published: May 31, 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    The author would strongly recommend following filling steps to get good clinical results in restoration of root surface caries with resin composites. First, exposed dentin surface on prepared cavity wall is based and capped by Super Bond Radio-Opaque after conditioned with 10-3 for 5-10s to revent post operative sensitivity. This treatment provides high quality hybridized dentin. Then conventional restoration was carried out by using good bonding systems and resin composites. Contraction gap could be minimized by applying low viscosity resin between the bonding and the filling processes and the composite is irradiated under a pressure with commercially available cervical matrix. Another important consideration is fluoridation, either rinsing mouth or topical application, to prevent further occurrence of caries as cervical and root surface easily suffer caries.
    Download PDF (2790K)
  • 1997 Volume 15 Issue 2 Pages e1
    Published: 1997
    Released on J-STAGE: June 07, 2011
    JOURNAL FREE ACCESS
    Download PDF (39K)
feedback
Top