<![CDATA[Background: The increase in the elderly population leads to a decline in their health and affects the productivity and quality of life. Preventive measures must be taken to improve oral hygiene for the elderly starting from the pre-elderly group so that later it will form healthy and productive elderly. One of the efforts to improve dental hygiene and health is through mechanical tooth cleaning with a toothbrush. However, currently, there is no toothbrush design that is suitable for the condition of the pre-elderly oral cavity. Therefore, it is necessary to analyze the design of the number of toothbrush bristles as initial research to obtain an appropriate toothbrush design for the elderly. Method:The study was conducted on 30 participants using a toothbrush with a number of toothbrush bristles paths: with 4 paths, 3 paths, and 2 paths. The effectiveness of tooth brushing hygiene was measured through the debris index before using a toothbrush and after brushing. Result: The results of the Kruskal Wallis test showed a significance value of 0.01 (p]]>
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