Publication: Effect of a calcium-phosphate based desensitizer on dentin surface characteristics
Issued Date
2013-07-31
Resource Type
ISSN
18811361
02874547
02874547
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2-s2.0-84880993236
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Mahidol University
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SCOPUS
Bibliographic Citation
Dental Materials Journal. Vol.32, No.4 (2013), 615-621
Suggested Citation
Ornnicha Thanatvarakorn, Syozi Nakashima, Alireza Sadr, Taweesak Prasansuttiporn, Suppason Thitthaweerat, Junji Tagami Effect of a calcium-phosphate based desensitizer on dentin surface characteristics. Dental Materials Journal. Vol.32, No.4 (2013), 615-621. doi:10.4012/dmj.2013-073 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/31673
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Title
Effect of a calcium-phosphate based desensitizer on dentin surface characteristics
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Abstract
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. Human dentin 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.