Evaluation of Dentin Desensitizing by Bioglass with Two Different Methods in Vitro.

doi:10.13701/j.cnki.kqyxyj.2016.12.015

Abstract

Abstract: To evaluate the effect of bioactive glass desensitizer on dentinal tubule orifice occlusion through smearing or transparent pressure-swage. Methods: Fifty-six dentin slices were selected, and after demineralization, the slices were randomly divided into 7 groups: smearing the bioactive glass for 1 day, 3 days and 7 days (A1, A2, A3), applying the bioactive glass by pressure-swage for 1 day, 3 days and 7 days (B1, B2, B3) and negative control group. Occlusion effect on dentinal tubule orifice was observed via FESEM. Surface mineral content disparity of each dentin slices was analyzed by EDX. Results: FESEM results indicated that dentinal tubules were well occluded after smearing or transparent pressure-swage applying of bioactive glass desensitizer. The difference of dentinal tubule exposure between A1 and B1 was not significant different. The effect of dentinal tubule occlusion was better in B2 and B3 groups than in A2 and A3 groups. EDX results showed that Ca/P ratio on the dentinal surface in each group was not significantly different. Conclusion: Compared with smearing method, trans-parent pressure-swage method could improve the occlusion effect of dentinal tubules by bioactive glass in a short period of time.

Key words: Occlusion effect, Dentinal tubule , Transparent pressure-swage

CLC Number:

R781.2

MA Qian, WU Feng-ming, LUO Rui, WANG Jie, CHEN Ya-ming.. Evaluation of Dentin Desensitizing by Bioglass with Two Different Methods in Vitro.[J]. Journal of Oral Science Research, 2016, 32(12): 1287-1291.

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