Abstract
Introduction: Dental caries and periodontal disease are among the most common infectious diseases in the world. DMFT (Decayed, Missing, Filled, Teeth), CPITN (Community Periodontal Index of Treatment Needs), and plaque indices are applied as suitable criteria for evaluating these two diseases and oral health. Given the significance of dental caries and periodontal disease, the objective of this study was to determine the incidence of dental caries and periodontal disease in the Iranian city of Shiraz. Material and Methods: The samples were evaluated in the four categories of medical, manufacturing, educational, and office centers within Shiraz, and then the DMFT, CPITN, and plaque indices in addition to nutrition status were all measured among them. Results: Having considered the DMFT to be below 15% and the CPITN less than 1.5 (the variables’ mean in the population under study), respectively, as resistant to dental caries and periodontal disease while at the same time taking into account the plaque index of less than 1.25 (mean) as the low level of this very index not disregarding the nutritional status of the population under study: the resistant individuals ratio to the two diseases equaling 10%, those individuals prone to these two diseases equaling 55%, the ratio of resistant people to periodontal disease and, simultaneously, prone to dental caries equaling 14%; and, lastly, the ratio of individuals resistant against dental caries simultaneously prone to periodontal disease equaling 20% (estimated). Conclusion: The research was performed in medical, manufacturing, educational, and office centers in Shiraz, Iran. There was no significant difference in terms of periodontal disease and dental caries between the four groups. [GMJ. 2012;1(2):66-71]
Highlights
Dental caries and periodontal disease are among the most common infectious diseases in the world
The frequency and distribution of the resistant, infected, and non-infected individuals with respect to dental caries and periodontal disease was assessed in the inhabitants of Shiraz by calculating the DMFT, the CPITN Index, and the Silness-LoePlaque Index as the standard tools for measuring dental caries and periodontal disease and by considering the amount of dental plaque as the main cause of periodontal disease and the amount of plaque and nutritional status as the factors involved in caries
By measuring the mean of each Silness-LoePlaque Index (1.25), DMFT (15%), and CPITN (1.5), individuals with equal amounts or higher means were considered as a high degree of index and those with lower means were regarded as a low degree of index
Summary
Dental caries and periodontal disease are among the most common infectious diseases in the world. In a research conducted by Naston[5] on a group of students between 6 and 15 years old in a school in Maryland, almost 90% of the girls and 88.4% of the boys were suffering from periodontal disease and 65% of the girls and 50% of the boys had dental caries It seems that by the age of 14 years, girls are more likely to be affected by periodontal disease than boys; this could be in consequence of the earlier growth of teeth in the former sex. The terms and the methods to reach this aim are described in detail
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