Methods: The enamel surface of 120 newly extracted non-carious permanent incisors were used in this study. Firstly 120 teeth will be randomly divided into 2 groups in each group of 60 samples. G1: the group which will be examined enamel roughness (n:60). G2: the group which will be examined enamel microhardness (n:60). Then these groups will be randomly divided into 4 groups among themselves. The group which will be brushed Xyliwhite toothpaste gel, (n:15); The group which will be brushed Periobiotic probiotic toothpaste, (n:15); The group which will be brushed Colgate Max Fresh toothpaste, (n:15); The group which will be brushed Ipana White Power Carbonate toothpaste (n:15). Each group was brushed using four different toothpaste for 1 week with battery-powered toothbrush at the morning and evening for 2 min. Vicker's hardness tester was used to measure the changes in microhardness, the profilometer was used to measure changes in surface roughness.
Results: No statistically significant differences were found Vicker's hardness values measured after tooth brushing process in group brushed with Colgate Max Fresh toothpaste (p>0,01), statistically significant decrease was observed in groups brushed with Ipana White Power Carbonate toothpaste, Xyliwhite Toothpaste Gel, Periobiotic Probiotic Toothpaste (p˂0.01). No statistically significant differences were found in surface roughness values measured after tooth brushing process in group brushed with Colgate Max Fresh toothpaste (p>0,01), statistically significant increase was observed in groups brushed with other toothpastes. (p˂0.01).
Conclusion: Colgate Max Fresh abrasive-free toothpaste with fluoride has no effect on permanent tooth enamel surface roughness and microhardness, Xyliwhite, Periobiotic, Ýpana White Power Carbonate containing abrasive tootpastes led to changes negatively on permanent tooth enamel surface roughness and microhardness.