Study on the Effectiveness of Plaque Removal on Newly Erupted Permanent Teeth : Part-I The distribution of dental plaque accumulation on mandibular first permanent molar
The immature teeth, especially the first permanent molars show a high caries rate with plaque accumulation. Plaque accumulates easily on newly erupted first permanent molars because of its anatiomical structures, complicated eruption processes and shortage of self-cleaning action. In this study, according to the eruption status of the mandibular first permanent molar, 42 children with the newly erupted molars were divided into 3 stages. Plaque distribution was investigated by using a special camera which was designed by the author et al. According to the photos, plaque distribution on the molars was evaluated and analyzed statistically by computer. Results were as follows: 1. On the different eruption stages: Plaque accumulation was highest in the early eruption stage and decreased as the molars erupted. Significant difference was found between eruption stage 1 and stage 2. 2. On the occlusal surfaces (mesio-part, central-part and distal part): Plaque accumulation decreased on the each part of the occlusal surfaces as the molars erupted. 3. Plaque accumulation on buccal surfaces of the molars was found to decrease as the molars erupted. Significant difference was found among each of the eruption stages. 4. As the molars attained occlusal position, plaque accumulation had a tendency to decline. 5. There was no relationship between the subjects with TBI experience and without it, however, plaque accumulation decreased as the molars erupted
