The Evaluation of the Effect of Some Common Carbonated Beverages in Iran on Enamel Microhardness of the Human Extracted Teeth

Document Type : Original Article


1 Professor of Operative Dentistry.Department of Operative Dentistry, Member of Social Determinant of Oral Health Research Center, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

2 Associate Professor of Operative Dentistry.Department of Operative Dentistry, Member of Social determinant of Oral Health Research Center, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

3 Assistant Professor of Operative Dentistry.Assistant Professor Department of Operative Dentistry, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

4 Dentist, ShahidSadoughi University of Medical Sciences, Yazd, Iran.


Background and Objective: Outspreaded of modern life style causes increasing consumption of carbonated beverages. Vickers hardness measurement is one of the most practical methods to determine the microhardness of the teeth enamel. The aim of this study was to determine the effect of some of the common carbonated beverages in Iran on the microhardness of the human extracted teeth enamel in Yazd dental clinics.

Subjects and Methods: In this experimental in-vitro study, 60 anterior and posterior human teeth were collected and enamel blocks were divided into 6 groups:1-Limon Delester, 2-Orange Miranda, 3-Pepsi, 4- Carbonated Doogh, 5-Sprite and 6-physiologic serum (control group). Samples were kept in each group 6 hours per day for one week. This study was microhardness analyzed in 3 stages (Initial, after one day and at the end 7 day). Finally data were analyzed with SPSS17, T-tests,ANOVA,TukeyHSDand Repeated measure statistical tests.

Results: Tukey HSD test showed at the beginning groups did repeated measure not have a significant difference and after one day the first studied five groups had a significant difference with the control group. ANOVA test and p-values showed that microhardness after one day and at the end 7 day in studied groups, significantly decreased(P-value


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