The aim of this study was to carry out the comparative analysis of the brushing force following various brushing techniques bytoothbrush mounted pressure sensing unit. The study group consisted of 10 dental hygienist participants. The brushing forces (on buccal area of each first molar) were monitored on 8 different kinds of brushing techniques; Fones, Bass, Rolling, Scrub, Charters, stillman, Modified bass and Modified stillman. In Bass, Charters, Fones and Scrub method, force distributions showed a small gap of maximum and minimum value (Max/Min) while a big difference was noted in Modified bass, Modified stillman, Rolling and Stillman methods. Especially, the biggest difference of Max/Min value was observed in the area of lower left first molar. In conclusion, highly delicate manual skill is needed in showing big error range of force distribution. It means that careful force needs to be focused during toothbrushing instruction when a delicate manual skill was carried out.

Ⅰ. INTRODUCTION
 Ⅱ. MATERIALS AND METHODS
  1. Study population and experimental design
  2. Assessment of brushing force and Dataacquisition
  3. Toothbrushing method
  4. Statistical analysis
 Ⅲ. RESULTS
  1. Data acquisition of individual toothbrushingpatterns on various brushing method
  2. Statistical analysis of toothbrushing force
 IV. DISCUSSION
 V. CONCLUSION
 Acknowledgments
 Ⅵ. REFERENCES

• Sang Mi Jeon(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 전상미
• Kou ni(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 쿠니
• Sang Woo Kim(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 김상우
• Ji Sun Kim(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 김지선
• Ok Joon Kim(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 김옥준
• Hong Ran Choi(Dental Research Institute, Department of Oral Pathology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 최홍란
• Ok Su Kim(Department of Oral Periodontology Dental Science Research Institute and Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea) | 김옥수 Corresponding author