Relationship between number of teeth and periodontal pockets

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Abstract
The relationship between number of teeth and the prevalence of periodontal disease is an important factor to consider when planning future needs for periodontal care. This is of particular relevance today, when the level of tooth loss is steadily reducing. The aim of the present study was to examine this relationship. Three dependent variables associated with periodontal disease were included in the analysis: 1. The probability of having pockets 4 mm or more. 2. The mean pocket depth for individuals with pockets 4 mm or more. 3. The number of pockets for individuals with pockets 4 mm or more. Age was included in the analysis as a control variable. The study population comprised 2219 individuals in the county of Trøndelag, Norway. The data were analyzed using logistic regression and multiple regression analysis. The probability of having pockets 4 mm or more increased with increasing number of teeth. The average pocket depth decreased with increasing number of teeth. There was no relationship between number of pockets and number of teeth. The increase in the probability of having pockets with a marginal increase in number of teeth was greatest for those aged 53 years and above. It is concluded that this group of people are likely to have the greatest need for periodontal care.

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