Effect of a calcium-phosphate based desensitizer on dentin surface characteristics
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概要
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This study aimed to evaluate the ability of a newly developed calcium-phosphate desensitizer in dentin permeability reduction and its integration with dentin surface before and after immersion in artificial saliva (AS) under two different dentin surface characteristics; with or without the collagen exposure.Humandentin discs treated by EDTA to expose collagen fibrils or EDTA/NaOCl to expose plain dentin surface were subjected to a calcium-phosphate desensitizer (Teethmate Desensitizer; TMD), while non-desensitizer treatment served as control. TMD application showed the occlusion in dentinal tubules and reduction in dentin permeability up to 92%, regardless of dentin surface characteristics. After AS immersion, permeability reduction percent (PR%) significantly increased in EDTA/NaOCl pretreatment (p<0.05). Newly-formed crystallites were observed on desensitizer treated dentin and EDTA/NaOCl pretreatment control group, whereas the crystallites did not exist on EDTA pretreatment control group. Ultrasonication revealed the integration of the calcium-phosphate rich layer of desensitizer on dentin surface after AS immersion.
著者
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Tagami Junji
Cariology & Operative Dentistry Department Of Restorative Dentistry Tokyo Medical And Dental Uni
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Sadr Alireza
Cariology And Operative Dentistry Department Of Restorative Sciences Graduate School Of Medical And Dental Sciences Tokyo Medical And Dental University
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Thitthaweerat Suppason
Cariology And Operative Dentistry Oral Restitution Department Graduate School Of Medical And Dental Sciences Tokyo Medical And Dental University
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Nakashima Syozi
Cariology And Operative Dentistry Department Of Restorative Sciences Graduate School Of Medical And Dental Sciences Tokyo Medical And Dental University
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THANATVARAKORN Ornnicha
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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PRASANSUTTIPORN Taweesak
Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University
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THANATVARAKORN Ornnicha
Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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