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 stages. Tannin-fluoride (HY) preparation was used for caries prevention of overdenture abutment teeth. Caries activity test may be useful to detect patients who are at risk of overdenture abutment caries.
In this study, caries activity of the non-coping abutment teeth was measured for periods varying from 1 to 12 years.
When the caries activity was 0 and +1, there were no abutment caries. When the caries activity was +2 and +3, percentages of caries of HY treatment group and nontreatment group were 5.7% and 44.4%respectively from 5 to 12 years (p > 0.05), and 10.9% and 33.3% respectively in total (p > 0.05).
These results suggested that there is a correlation between these caries activity test scores and non-coping abutment caries, and HY preparation has cariostatic effects even in high caries activity.
