Journal of Korean Academy of Oral Health

The Korean Academy of Preventive Dentistry and Oral Health (대한예방치과·구강보건학회)
권호 표지

Influence of toothbrushing on eroded enamel and dentin by carbonated soft drink

산성음료와 칫솔질이 치아마모에 미치는 영향

Jeon, Hyun-Sun;Kang, Si-Mook;Kwon, Ho-Keun;Kim, Beak-II
전현선;강시묵;권호근;김백일

  • Published : 2008.06.01
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Abstract

Objectives: This study evaluated the erosive-abrasive enamel and dentine loss by in-vitro cycling of carbonated soft drink and toothbrush abrasion. Methods: Extracted bovine teeth (2×2) were embedded in acrylic resin, ground flattened and polished. From each specimen, approximately 5 mm slices were re-embedded into epoxy resin. Each seventy two enamel and dentine specimens were randomly assigned to the following six groups(A-F) and submitted to 3 alternating de- and re-mineralization cycles, including abrasion by tooth brushing. The specimens were exposure of carbonated soft drink (Coca-Cola�) for 2 minutes except for control group (toothbrushing only). They were immersed in remineralization solution for 0, 30, 60 and 120 minutes, respectively. All specimens were brushed for 100 strokes with the dentifrice slurry using a V-8 cross brushing machine. This study tried to evaluate surface enamel loss by modified Knoop indentation measurement for surface enamel loss. The surfaces micro structural changes also were investigated by SEM. Results: After these cycles, the surface enamel and dentine mineral wear were as follows A (-0.091/-0.157㎛), B (-0.058/-0.373㎛), C (0.014/-0.194㎛), D (0.14±0.10/-0.19㎛), E (0.138/0.005), F (0.213/-0.101㎛). The enamel loss was significant differences between the control (erosion only, brushing only) and all experimental groups (p<0.05), dentine loss was significant differences between group B and groups A, C, D, E and F(p<0.05). Conclusion: The enamel and dentin surface loss of immediate toothbrushing after exposure of soft drink were not significant different in those of delayed toothbrushing.

Keywords

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