hy-agent and Gingivitis

The exposed dentin of overdenture abutments can lead to caries. Therefore chemical protection is needed to prevent caries. Considering that dentin contains both organic and inorganic components, reinforcement of both components should give reasonable results. Tannin-fluoride preparation strengthens both the organic and inorganic components of teeth.. This study examined whether the tannin-fluoride preparation protects noncoping abutments.. Thirty-one subjects aged 36 to 86 years participated in the clinical trial. A trial autopolymerizing resin containing the preparation or a conventional autopolymerizing resin was applied to the inner surface of the denture base, which was in contact with the abutments. When there were autopolymerizing resin group abutments, there was also at least one preparation group abutment under the overdenture.. The incidence of caries in the preparation and autopolymerizing resin groups were 0% and 0%, respectively, for the first 2 years, 4.5% and 0%, respectively, during the 3- to 4-year period, 13.8% and 75%, respectively, during the 5- to 8-year period, and 10% and 15%, respectively, in total. Gingival crevicular fluid demonstrated a tendency to decrease in both groups over time.. The trial autopolymerizing resin containing the preparation has a long-term caries prevention effect, and helps to maintain gingival health. Without adding clinical steps, abutments can be protected by the tannin-fluoride preparation.

Topics: Adult; Aged; Aged, 80 and over; Cariostatic Agents; Dental Abutments; Dental Caries; Dentin; Denture Design; Denture, Overlay; Female; Fluorides; Gingival Recession; Gingivitis; Humans; Hydrolyzable Tannins; Longitudinal Studies; Male; Middle Aged; Resins, Synthetic; Tannins

It was examined whether the tannin-fluoride preparation (HY preparation), which might have a caries-reductive, plaque inhibiting and astringent action, could reduce the incidence of gingival inflammation around abutment teeth. Zinc oxide eugenol cement mixed with the HY preparation was packed in the cavity prepared in the resin base facing the abutment tooth. Gingival crevicular fluid (Periotron units:GCF), gingival index (GI), plaque index (PlI) and probing depth around the abutment teeth were measured over a 3 month period. The following results were obtained: 1. GCF decreased at month 1 and showed low values at months 2 and 3. 2. GI showed a decreasing tendency. 3. PlI and probing depth did not show obvious changes. These results indicate that the tannin-fluoride preparation reduces gingival inflammation around abutment teeth.

Topics: Adolescent; Adult; Aged; Anti-Infective Agents, Local; Astringents; Dental Abutments; Dental Plaque Index; Denture, Partial, Removable; Female; Fluorides; Gingival Crevicular Fluid; Gingivitis; Humans; Hydrolyzable Tannins; Male; Middle Aged; Periodontal Index; Tannins; Zinc Oxide-Eugenol Cement