Abstract
Non-coping method for overdenture abutment teeth has several advantages such as avoiding mechanical irritation to the marginal gingiva, allowing patients to make a smooth transition to the overdenture, and facilitating the detection of caries of abutment teeth in their early stage. Tannin-fluoride (HY) preparation strengthens both the inorganic and organic components of teeth. In this study, the preparation was used for caries prevention of the non-coping abutment teeth for periods varying from one to twelve years.
Seventy (76.9%) of 91 observation teeth were still non-coping abutment teeth, 14 teeth (15.4%) needed coping restoration, and 7 teeth (7.7%) were extracted due to caries (2 teeth) or periodontal disease (5 teeth).
The percentages of coping restoration and extraction due to caries in the HY treatment group showed a tendency to be lower than those in the non-treatment group, especially in periods of five to eight years (p>0.05).
It became clear that the non-coping method could be useful for overdenture abutment in caries prevention such as the tannin-fluoride preparation.
