A Comparison of Four Types of Toothbrushes and Different Tooth Brushing Methods on Plaque Removal I. Examinations using second year dental hygiene students as subjects

To clarify the relationship between the type of brush and brushing methods, 30 students in Mastumoto Dental College, School of Dental Hygiene were requested to use 4 different types of brushes with 4 brushing methods during 4 two week periods. The following results were obtained: 1. Brushing methods: The scrub method had the best results in plaque control, followed by the Bass, modified Stillman and roll methods in that order. A significant difference was observed with these brushing methods (p<0.01). 2. Toothbrushes: Test brushes S and M got the best results, and H and the open-tufted brushes followed. Significant differences were observed with these brushes (p<0.01). 3. Interaction between brushing methods and brushes: Plaque control effectiveness tended to differ with brushing method between the facial and proximo facial surfaces, a. Facial surfaces: Test brush H showed a higher plaque control effectiveness with the scrub and Bass methods than that of test brushes M and S. Test brush M was the most effective for plaque control using the roll and modified Stillman methods. b. Proximofacial surfaces: Test brush S was the most effective with the Bass method and M was more effective with the other methods

A Comparison of Four Types of Toothbrushes and Different Tooth Brushing Methods on Plaque Removal II. Examinations using first year dental hygiene students as subjects

In a continuation of the first report, the authors hoped to clarify the relationship between toothbrush specifications and various brushing methods. For this purpose, we compared the effectiveness of plaque removal for 4 different types of brushes with 4 different brushing methods. The first year students of Matsumoto Dental College, School of Dental Hygiene, were selected as subjects. The results were as follows: 1. Brushing methods: No significant difference was observed with the roll, Bass, or modified Stillman methods when all surfaces were grouped together. Also, no significant difference was observed on the facial surfaces with the different methods. However, the Bass and roll methods tended to be slightly better. The results of this study did not correlate with the previous study or with the reports from Arai and Watanabe. The subjects\u27 skill and control at the time of evaluation were taken into consideration. 2. Test brushed: Test brush S was the most effective when all surfaces were grouped together and test brush M was the least effective. This tendency was observed on both the facial and the proximo facial surfaces. 3. Interaction between test brushes and the amount of plaque prior to testing: It was observed that subjects who were divided into the "small" group prior to testing kept the amount of plaque at the same low level after testing. By comparing the results with the previous report, the authors concluded that there was more advancement in the skill of the second year students than the first year students

A Study on the Physical Sensations of Four Kinds of Trial Toothbrushes and Four Different Toothbrushing Methods

Using 65 students of the hygiene school attached to Matsumoto Dental College (35 first-year students, 30 second-year students) as subjects, we performed an investigation into the different physical sensations produced when using 4 trial toothbrushes and 4 different toothbrushing methods. The conclusions are as follows: 1. "Length of brush": There was a tendency to reply that the length of brush seemed slightly shorter when the students brushed with the Roll method, rather than the other three methods. 2. "Stiffness of filaments": There was a tendency to reply that the bristle was much harder when the students brushed with methods from Group B (Methods that primarily use the tip of the bristle) than with methods from Group A (Methods which use the side of the bristle). 3. "Tooth brush wear": A large percentage of students replied that the bristle was more durable when using methods from Group B rather than Group A. 4. "Physical sensation on tooth and gingiva": Brush M and the Open-tufted brush, both classified as "medium" stiffness, were preferred. 5. "Physical sensation of holding the handle": 80-90% of the students, regardless of the toothbrushing method employed, liked the handles of the brushes