Abstract
Orthodontic procedures are frequently carried out for the improvement of periodontal disease. However, no reports of statistical investigations on the malposition of teeth have occurred with respect to the degree of periodontal disease due to orthodontic problems.
The purpose of this paper is to report a statistical analysis of 110 out patients, comprising 20 cases of gingivitis and 90 cases of periodontitis without defects in teeth, dentures, crowns, or bridges, in the Department of Periodontics of Josai Dental University Hospital. The following results were obtained:
1. Malocclusion was observed in 78.5% of the periodontal patients.
2. Malposition of teeth was obviously observed in all periodontal patients with orthodontic problems, with axiversion being the most frequently observed form of malposition.
3. A tendency toward arch length discrepancy and crowding was observed more frequently the lower arch compared with the upper arch.
4. Orthodontic problems in periodontal patients occurred in direct proportion to the degree of inflamation due to periodontal disease.
5. With respect to age, no differences were detected in the correlation between periodontal disease and orthodontic problems.
