2016 Fiscal Year Final Research Report
Quality Evaluation of Dentin-Resin Interface by Use of Optical Coherence Tomography
| Project/Area Number |
26462896
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Conservative dentistry
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| Research Institution | Nihon University |
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Principal Investigator |
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| Research Collaborator |
KUROKAWA Hiroyasu
TAKAMIZAWA Toshiki
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 歯質接着 / 接合界面 / 耐久性 / 再石灰化 / 光干渉断層画像診断法 / 超音波透過法 |
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| Outline of Final Research Achievements |
The purpose of this study was evaluate the quality of dentin-resin interface utilizing optical coherence tomography (OCT) and ultrasonic device and. Using OCT at selected locations on the enamel surface, peak intensity at 1/e2 were measured, and integrated values were calculated. From the OCT observations, obvious changes in B-scan mode were observed, and decreases in signal intensities were detected for the specimens with acidic attack. The propagation time of longitudinal ultrasonic waves was measured by a pulser-receiver with a transducer. The sonic velocity decreased over time for specimens stored in demineralising solution; however, coated specimens had a significantly higher sonic velocity than those without coating. From the results of this study, bonding systems containing PRG fillers appeared to reduce the demineralisation of tooth substrate and maintain the quality of dentin-resin interface.
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| Free Research Field |
保存修復学
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