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논문 기본 정보

자료유형
학술저널
저자정보
정승화 (부산대학교 치의학전문대학원 예방과사회치의학교실) 조유진 (부산대학교 치의학전문대학원 예방과사회치의학교실, 부산대학교 치의생명과학 교육연구팀) 전은주 (부산대학교 치의학전문대학원 예방과사회치의학교실)
저널정보
대한예방치과·구강보건학회 대한구강보건학회지 대한구강보건학회지 제48권 제1호
발행연도
2024.3
수록면
20 - 25 (6page)
DOI
https://doi.org/10.11149/jkaoh.2024.48.1.20

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초록· 키워드

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Objectives: This study aimed to investigate the presence of microplastic chips at the tips of toothbrush bristles using optical microscopy. Methods: Toothbrushes available in South Korea were tested. We randomly selected 12 toothbrushes, including four domestically produced and eight imported toothbrushes. Toothbrushes withtapered bristle ends were excluded. Toothbrushes with conventional bristle shapes based on visualinspection were included. Three identical toothbrushes were prepared. The outer bristles of eachtoothbrush were sampled using ScotchTM tape and prepared using a scalpel for optical microscopy. The inspector visually assessed both the bristle diameter and the presence of microplastic chipsthat remained attached to the ends of the toothbrush bristles under light microscopy (40× magnification). Results: All toothbrush bristles met the criteria for soft bristles (diameters ranging from 0.2 to0.25 mm). The incidence of microplastic chips varied among toothbrush bristles, ranging from aminimum of 3.6% to a maximum of 86.2%. Notably, toothbrushes with smaller diameter bristlesexhibited higher levels of microplastic chips. Conclusions: This study confirmed that the trimming conditions of toothbrush bristles and the occurrence of microplastic chips vary among different toothbrushes. Our findings suggest that toothbrush manufacturers need to improve their manufacturing processes to prevent the generation ofmicroplastic chips during bristle trimming.

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