1. Comparison of the clinical effectiveness of a single and a double headed toothbrush;Bastiaan;Journal of Clinical Periodontology,1984
2. Quantitative evaluation of the plaque-removing ability of different types of toothbrushes;Bay;Journal of Periodontology,1967
3. The plaque-removing ability of various toothbrushes with the roll technique;Bergenholtz;Svensk Tandlak. T,1969
4. The effectiveness of the Charters, scrub and roll methods of toothbrushing by professionals in removing plaque;Frandsen;Scandinavian Journal of Dental Research,1970
5. The plaque-removing effect of four toothbrushing methods;Hansen;Scandinavian Journal of Dental Research,1971