Wear of the toothbrush bristles under Bass technique with special reference to the toothbrushing force (author's transl)

Abstract

The present study was made in vivo and weekly observed to the wear of toothbrush bristles under Bass technique reference to the toothbrushing force, and also to the pollution of the toothbrush bristles.The results obtained were as follows:1. Toothbrushing force in Bass technique was 218g on average.2. Discrepancy in the individual tooth brushing patterns which were evident from the brushing force curve was due to the individual variation in relation to grasp of the toothbrush.3. At one week after brushing, the wear of the toothbrush bristles were a little regardless of the toothbrushing forces. At four weeks after brushing, the tip of bristles was observed to overspread above average of the brushing force.4. At one week after brushing, coccoid microorganisms were observed at the round cut off tip of the bristles. Thereafter, coccoid and rod-like microorganisms were observed around the tip of the bristles.