Scandiffio Priscila, Mantilla Tais, Amaral Flávia, França Fabiana, Basting Roberta, Turssi Cecilia
DDS, São Leopoldo Mandic Institute and Dental Research Center, Rua José Rocha Junqueira, 13, Campinas, SP, Brazil.
DDS, MSc, PhD student, School of Dentistry, University of São Paulo, Av. Professor Lineu Prestes 2227, São Paulo, SP, Brazil.
J Clin Exp Dent. 2018 Aug 1;10(8):e776-e780. doi: 10.4317/jced.54994. eCollection 2018 Aug.
This study aimed to investigate the ability of different concentrations of calcium carbonate (CaCO3) suspensions to control enamel surface loss.
Seventy-five enamel slabs were embedded, ground and polished in a pneumatic grinder-polisher machine. Reference areas were created with UPVC tape and the specimens were randomly allocated into five groups (n = 15) for exposure to hydrochloric acid solution to simulate gastric juice (0.01 M, pH 2) for 2 minutes. The samples were then exposed to suspensions containing 0.0001, 0.001, 0.01 or 0.1 mmol/L CaCO3 for 1 minute. Artificial saliva was used as control. The samples were subjected to a total of five erosive cycles followed by treatment with CaCO3 suspension. Surface loss was measured (in µm) using optical profilometry.
One-way ANOVA ( = 0.009) and Tukey's test showed a significant reduction in surface loss when compared to the group not exposed to CaCO3 (0.74, +/- 0.23 µm), and the 0.01 mmol/L (0.40; +/- 0.23 µm) and 0.1 mmol/L suspensions (0.37; +/- 0.26 µm).
The lower concentrated suspensions were incapable of significantly reducing enamel surface loss. Rinsing with 0.01 and 0.1 mmol/L calcium carbonate suspensions was revealed as a potentially promising strategy to prevent enamel erosion. Tooth erosion, gastric acid, calcium carbonate, prevention and control.
本研究旨在调查不同浓度碳酸钙（CaCO₃）悬浮液控制牙釉质表面流失的能力。
75个牙釉质块在气动磨抛机中进行包埋、研磨和抛光。用聚氯乙烯胶带制作参考区域，将标本随机分为五组（n = 15），暴露于盐酸溶液中以模拟胃液（0.01 M，pH 2）2分钟。然后将样品暴露于含有0.0001、0.001、0.01或0.1 mmol/L CaCO₃的悬浮液中1分钟。以人工唾液作为对照。样品总共进行五个侵蚀循环，随后用CaCO₃悬浮液处理。使用光学轮廓仪测量表面流失（以微米为单位）。
单因素方差分析（F = 0.009）和Tukey检验显示，与未暴露于CaCO₃的组（0.74，±0.23微米）相比，表面流失显著减少，0.01 mmol/L（(0.40)；±0.23微米）和0.1 mmol/L悬浮液（(0.37)；±0.26微米）也有同样效果。
较低浓度的悬浮液不能显著减少牙釉质表面流失。用0.01和0.1 mmol/L碳酸钙悬浮液冲洗被证明是预防牙釉质侵蚀的一种潜在有效策略。牙齿侵蚀、胃酸、碳酸钙、预防与控制。
