Blackwell Publishing Journal Backfiles 1879-2005
The effect of denture wearing habits was studied in 35 overdenture wearers (20 day-and-night wearers. 15 day-wearers) during a period of 3 yr with controlled oral hygiene. Prior to prosthetic treatment intensive instruction and motivation in oral hygiene were carried out and the patients were recalled 24 times yearly during the study period. Before treatment mean Plaque Index (PH) and Gingival Index (GI) were 1.5 and 1.6, respectively, in both groups of patients. At day 0, 1 yr, 2 yr and 3 yr mean PII and GI were 0.3 0.5 and 0.6 0.8, respectively, in the group of day-wearers and 0.5–1.0 and 1.0–1.2, respectively, in the group of day–and–night wearers. This difference was statistically significant. Furthermore, during the study period 16% of the abutment tooth surfaces showed attachment loss (1 4 mm) in the group of day-and-night wearers against 7% of the tooth surfaces in the group of day-wearers. This difference was statistically significant. During the 3 yr 36 carious lesions developed in the group of day-and-night wearers, but none in the group of day-wearers. The results of this study have shown that day–and–night wearing of dentures is a major periodontitis and caries risk factor in complete overdenture wearers with controlled oral hygiene.
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