IADR Abstract Archives
Comparative study of plaque removal effect on Japanese commercial toothbrushes.
Abstract: Objectives: There are so many shapes, sizes, and styles of toothbrushes on the market. We may know comparative effects about that. This study aims to evaluate the plaque removal effect of commercially various toothbrushes in vitro.
Methods: The toothbrushes were selected Nikkei telecom top-selling products and other different head designs, totally used 11 types. The brands were Clinical Advantage®, System Toothbrush®, Between Lion®, Gum Dental Brush®, Clear Clean Toothbrush®, and Ruscello Toothbrush®. Using 6 (16, 21, 24, 36, 41, and 44) artificial teeth (NISSIN) setting on the dental model, the brushing method was performed for 10 seconds per site with keeping pressure of 150g. The outcome was the removal rate of artificial plaque (NISSIN). Image analysis using software ImageJ was calculated from the remaining area of plaque, by taking photographs before and after brushing. The statistical analysis was used SPSS22.0 (IBM) for comparing.
Results: As for the plaque removal rate in all parts, the mountain-shape cut bristle toothbrush had the highest removal rate (61.2%). On the other hand, the ultrafine bristle toothbrush had the lowest (17.4%) with significant differences between other toothbrushes. These designs, rough surface processing type (59.1%), spherical bristle type (59.1%), and the diamond shape type (59.7%) had better plaque removal effect, although there was no significant difference in this experiment. Nevertheless, almost toothbrushes had more than 50% of plaque remained in the tooth adjacent surface. It seems necessary to use other oral cleaning tools such as dental floss or interdental brush to remove plaque in adjacent surfaces.
Conclusions: The different designs of the commercial toothbrushes like hardness, planting density, tip shape, etc. affected the plaque removal rate. Particularly, the plaque remaining by the ultrafine toothbrushes was large, and there were significant differences statistically between other toothbrushes.
Methods: The toothbrushes were selected Nikkei telecom top-selling products and other different head designs, totally used 11 types. The brands were Clinical Advantage®, System Toothbrush®, Between Lion®, Gum Dental Brush®, Clear Clean Toothbrush®, and Ruscello Toothbrush®. Using 6 (16, 21, 24, 36, 41, and 44) artificial teeth (NISSIN) setting on the dental model, the brushing method was performed for 10 seconds per site with keeping pressure of 150g. The outcome was the removal rate of artificial plaque (NISSIN). Image analysis using software ImageJ was calculated from the remaining area of plaque, by taking photographs before and after brushing. The statistical analysis was used SPSS22.0 (IBM) for comparing.
Results: As for the plaque removal rate in all parts, the mountain-shape cut bristle toothbrush had the highest removal rate (61.2%). On the other hand, the ultrafine bristle toothbrush had the lowest (17.4%) with significant differences between other toothbrushes. These designs, rough surface processing type (59.1%), spherical bristle type (59.1%), and the diamond shape type (59.7%) had better plaque removal effect, although there was no significant difference in this experiment. Nevertheless, almost toothbrushes had more than 50% of plaque remained in the tooth adjacent surface. It seems necessary to use other oral cleaning tools such as dental floss or interdental brush to remove plaque in adjacent surfaces.
Conclusions: The different designs of the commercial toothbrushes like hardness, planting density, tip shape, etc. affected the plaque removal rate. Particularly, the plaque remaining by the ultrafine toothbrushes was large, and there were significant differences statistically between other toothbrushes.