Occluding effects of three new calcium desensitizers on dentinal tubules in vitro
10.3760/cma.j.issn.1002-0098.2011.04.006
- VernacularTitle:三种新型钙盐脱敏剂封闭牙本质小管的体外研究
- Author:
Zheng-Hui XIONG
1
;
Lu XIA
;
Lei MEI
;
Guang-Zheng HAN
;
Ya-Ming CHEN
Author Information
1. 南京医科大学口腔医学研究所,南京医科大学附属口腔医院
- Keywords:
Dentin sensitivity;
Microscopy,electron,scanning;
Calcium desensitizers
- From:
Chinese Journal of Stomatology
2011;46(4):214-217
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the occluding effects of three new calcium desensitizers on dentinal tubules in vitro. Methods Twenty-five dentin specimens of 1.00 mm thick from freshly extracted third molars were divided into five groups randomly. After treatment with 6% citric acid, group A was treated with distilled water, and group B-E were treated with NovaMin, Pro-Argin, casein phosphopeptide-amorphous calcium phosphate( CPP-ACP), and 75% NaF glycerin for 2 min respectively. Then the teeth were vertically cleaved into two sections. The surfaces and cross sections were observed by the scanning electron microscope(SEM) and energy dispersive X-ray (EDX), which were analyzed by the Image-Pro Plus software. Results The percentage of dentin tubules sealed were ( 81.6 ± 6. 1 ) %, ( 71.5 ± 6. 3 ) %, (43.2 ± 2. 6) %, ( 39. 9 ± 4. 1 ) %for groups B, C, D and E respectively, and the occluding depth were ( 30. 33 ± 2. 26 ), ( 24. 55 ± 2. 58 ),(16. 10 ±4. 65) and (8. 90 ± 1.51 ) μm respectively. The differences between these groups were statistically significant (P＜0. 01) except for group B and C (P ＞0.05). However, there was no significant difference between all the groups for the Ca/P ratios ( P = 0. 342). Conclusions NovaMin may have better immediate occluding effects than other desensitizers and could deposit a dentin-like mineral.
