The aim of the study was to introduce an individual tooth wear index and to use this index to investigate factors correlated to occlusal wear. The material consisted of 585 randomly selected dentate individuals from the community of Jönköping, Sweden, who in 1983 reached the age of 20, 30, 40, 50, 60, 70, or 80 years. The degree of incisal and occlusal wear was evaluated for each single tooth in accordance with criteria presented earlier. An individual tooth wear index, which made it possible to rank individuals in accordance with incisal and occlusal wear, was used as dependent variable to investigate factors related to incisal and occlusal wear. Of all factors analyzed, the following were found to correlate significantly with increased incisal and occlusal wear: number of existing teeth, age, sex, occurrence of bruxism, use of snuff, and saliva buffer capacity. Stepwise multiple regression analysis gave a total explanation factor of R2 = 0.41. It was also possible to distinguish well between groups of individuals with and without tooth wear by means of these factors.
Four cross-sectional studies were carried out in 1973, 1978, 1983, and 1993 to collect clinical and radiographic epidemiological data on the dental health status of the inhabitants of Jönköping, Sweden. The aim of the present paper was to use these data to analyze trends in the development of caries among children and adolescents between 1973 and 1993. Approximately 500 randomly selected individuals evenly distributed among the age groups 3, 5, 10, 15, and 20 years participated in each study. The main results show that the numbers of caries-free individuals increased in all age groups. In 1993, the mean number of decayed and filled tooth surfaces in the primary (dfs) and the permanent (DFS) dentition in all age groups was less than half of that found in 1973. Most of this decrease took place during the first 5 years, i.e., between 1973 and 1978. Between 1978 and 1983, only minor changes were observed. There was a further reduction of approximately 30%-50% in dfs/DFS between 1983 and 1993 in 3-, 5-, 10-, and 20-year-olds. The frequency distributions of dfs/DFS for 5- and 15-year-olds revealed an increasing skewness over time: in 1993, a large majority of the children and adolescents had a low or moderate caries severity while only a small group had high scores of dfs/DFS.
In 1973, a cross-sectional study on oral health status was performed on 1000 individuals in the age groups 3-70 years in Jönköping, Sweden. In 1983 and 1993, new cross-sectional studies were carried out in the age groups 3-80 years. The aim of the present study was to analyze caries prevalence and distribution in the three investigations 1973, 1983, and 1993 in the age groups 20-80 years. In the younger age groups (20-40 years), a larger proportion of individuals with good oral health was found in 1993 than in 1973 or 1983. A steady increase in the number of teeth in the age groups 40-80 years could be found, which was also reflected in the increasing number of decayed and filled tooth surfaces (DFS) in the same age groups. A marked decrease in proximal DFS in 20-50-year-olds in 1993 compared to 1973 and 1983 was found. However, a rather large and unchanging group of individuals suffering from severe caries was also observed. This situation demands an individualized caries treatment strategy based on risk assessment.
In 1973, 1978, and 1983 epidemiological studies on dental health were performed in the community of Jönköping, Sweden. Each investigation covered about 500 individuals evenly distributed in the age groups 3, 5, 10, 15 and 20 years. The subjects were examined clinically and radiographically. In the present study, caries prevalence and distribution are analysed too. The total number of DFS decreased by about 50 per cent between 1973 and 1983 in all age groups. Most of the changes occurred during the period 1973-1978. The largest percentage reduction in DFS had occurred on the buccal/lingual surfaces. The number of FS-proximal showed a decrease in 1983 compared to 1973, while the number of DS-proximal was almost unchanged during the period. A closer analysis of DS-proximal revealed that there was an increase in the proportion of lesions restricted to the enamel between 1973 and 1983. In the 3 and 5-year-olds, 29 and 32 per cent of the carious lesions were restricted to the enamel in 1973 compared to 58 and 53 per cent, respectively, in 1983. For the groups of 10, 15 and 20 year-olds the numbers were 84, 84 and 78 per cent respectively in 1973, and 89, 90 and 86 per cent in 1983. A change in distribution of individuals according to DFS was found in 1978 compared to 1973. This change was still more pronounced in 1983, most of the subjects showing a low number of DFS. The results of the study show that when caries prevalence is decreasing more refined diagnostic measures should be used in order to make it possible to follow changes.(ABSTRACT TRUNCATED AT 250 WORDS)
In 1973 an epidemiological study was performed in the community of Jönköping, Sweden. The study covered 1000 individuals, evenly distributed in the age groups 3, 5, 10, 15, 20, 30, 40, 50, 60 and 70 years. In 1983 a new cross-sectional study was carried out on the age-groups 3-80 years. The aim of the present study was to compare and analyse in detail caries prevalence and distribution in the age-groups 20-80 years at the examinations in 1973 and 1983. The subjects were examined clinically and radiographically regarding number of teeth, caries, restorations, etc. The mean number of teeth increased between 1973 and 1983, especially in the older age-groups. During the same period, the percentage of DFS decreased in the age-groups 20, 30 and 70 years, and was unchanged in the age-groups 40 to 60 years. There were only minor differences in DS in the respective age-group during the 10-year period. The distribution of subjects according to DFS showed that a large proportion of individuals in the age-groups 20 and 30 years had low DFS in 1983 as compared to 1973. For the age-group 40-years, the distribution was unchanged. For the 50, 60 and 70-year-olds, there was a change in distribution towards a larger proportion of individuals with high DFS values in 1983 as compared to 1973. The frequency distribution of individuals with primary and secondary carious lesions respectively was skewed, a small number of individuals having a high number of lesions in each age-group.(ABSTRACT TRUNCATED AT 250 WORDS)
Dental research the last two decades has created a basis for understanding the etiology, prevention and treatment of dental diseases. As a consequence, particular interest has been focused on the effect of prophylactic measures, efficiently organized and carried out, for various groups of individuals. However, it has proved difficult to organize systematic integrated preventive dental care for large parts of the population. The present paper describes in detail the development of integrated preventive dental care for children and adolescents in the County of Jönköping. Sweden, from 1973 to 1979. Based on the circumstances that existed before 1973 as regards e.g. personnel and the nature and content of the prophylactic measures, a description is made of the aims, methods, target groups, organization, financing and evaluation of a preventive dental care organization gradually developed for the age groups 0-16 years in the whole county (308,000 inhabitants; 4,000 individuals in each age-group). Important practical information as to the performance of the organization is given as well as examples of both basic preventive dental care programmes and supplementary programmes intended for individuals exhibiting a high prevalence of caries and gingivitis. As an effect of the programme instituted of remarkable improvement in dental health among children and adolescents has been achieved.