IADR Abstract Archives
Change in periodontal status over three years among couples
Objectives: To describe the change in periodontal status over three years among couples in Hong Kong and to identify the baseline indicators that can predict periodontal disease progression.
Methods: 354 of 432 families who participated in a baseline survey were successfully contacted and 209 families (59%) were followed up after three years. Periodontal conditions were clinically recorded; data on oral health behaviours, knowledge and attitude, dental utilization and socio-demographics were collected through questionnaire survey. Number of sextants with new/deeper pockets (NDP) for husbands and wives were computed. Zero inflated negative binomial regression and Poisson regression (both with forward selection method) were used respectively for husbands and wives to investigate the effects of baseline socio-demographics (age, household income and education), oral health behaviours (toothbrushing, flossing, use of mouthrinse, dental insurance coverage, dental visit pattern), oral health knowledge and attitude, and visual plaque level (VPI%) in predicting number of sextants with NDP.
Results: 195 wives (mean age=41.1) and 156 husbands (mean age=45.5) were clinically examined. 50.3% of the wives and 62.2% of the husbands had one or more sextants with NDP, the mean numbers of sextants with NDP were 1.7 and 1.0 respectively. Significant correlation was found within couples (Pearson correlation coefficient=0.33, p<0.001). While adjusting for the socio-demographics, wives brushing less than twice daily (IRR=1.49, p=0.026) and those in middle household income group (HKD 20K-29K) when compared to the high income group (≥30K) (IRR=1.71, p=0.002) predicted more sextants with NDP. For husbands, higher baseline VPI% (IRR=1.09 for every 10% increase, p=0.021) predicted more sextants with NDP.
Conclusions: The periodontal health of substantial proportion of the couples had deteriorated over three years and correlation was found within couples. Some significant baseline indicators could predict periodontal disease progression of the couples.
Methods: 354 of 432 families who participated in a baseline survey were successfully contacted and 209 families (59%) were followed up after three years. Periodontal conditions were clinically recorded; data on oral health behaviours, knowledge and attitude, dental utilization and socio-demographics were collected through questionnaire survey. Number of sextants with new/deeper pockets (NDP) for husbands and wives were computed. Zero inflated negative binomial regression and Poisson regression (both with forward selection method) were used respectively for husbands and wives to investigate the effects of baseline socio-demographics (age, household income and education), oral health behaviours (toothbrushing, flossing, use of mouthrinse, dental insurance coverage, dental visit pattern), oral health knowledge and attitude, and visual plaque level (VPI%) in predicting number of sextants with NDP.
Results: 195 wives (mean age=41.1) and 156 husbands (mean age=45.5) were clinically examined. 50.3% of the wives and 62.2% of the husbands had one or more sextants with NDP, the mean numbers of sextants with NDP were 1.7 and 1.0 respectively. Significant correlation was found within couples (Pearson correlation coefficient=0.33, p<0.001). While adjusting for the socio-demographics, wives brushing less than twice daily (IRR=1.49, p=0.026) and those in middle household income group (HKD 20K-29K) when compared to the high income group (≥30K) (IRR=1.71, p=0.002) predicted more sextants with NDP. For husbands, higher baseline VPI% (IRR=1.09 for every 10% increase, p=0.021) predicted more sextants with NDP.
Conclusions: The periodontal health of substantial proportion of the couples had deteriorated over three years and correlation was found within couples. Some significant baseline indicators could predict periodontal disease progression of the couples.