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Prevalence of dental caries and influencing factors, time trends over a 30-year period in an adult population: Epidemiological studies between 1983 and 2013 in the county of Dalarna, Sweden
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Oral and Maxillofacial Surgery.
Public Dental Service, Falun.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiovascular epidemiology.
2016 (English)In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850, Vol. 74, no 5, 385-392 p.Article in journal (Refereed) Published
Abstract [en]

Objective. The aim of this study was to investigate the prevalence of dental caries in an adult population using four different cross-sectional studies over a 30-year period and to assess its possible associations with socio-economic and socio-behavioral factors. Materials and methods. Four cross-sectional epidemiological studies were performed in the county of Dalarna, Sweden, in 1983, 2003, 2008, and 2013. Random samples of 1012–2243 individuals, aged 20–85 years, who answered a questionnaire about socio-economic and socio-behavioral factors, were radiographically and clinically examined. Results. The proportion of individuals with at least one decayed surface (DS) was 58% in 1983 and significantly lower, 34% in 2008 (p<0.05) and 33% in 2013; the mean number of DS was 2.0 in 1983 and 1.1 in 2013 in the age group 35 to 75 (p < 0.05). In the age group 85, the mean number of DS was 1.2 in 2008 and 2.4 in 2013. Adjusted for age and number of teeth, irregular dental visits, limited financial resources for dental care, smoking, education below university, male gender, daily medication, and single living were positively and statistically associated with manifest caries. Conclusion. The declining trend in the prevalence of manifest caries seems to be broken. In the oldest age group mean number of DS was higher in 2013 compared with 2008, indicating a possible beginning of an increase.  This needs special attention as this group increases in the population, retaining natural teeth high up in age. Manifest caries was found to be associated with socio-economic and socio-behavioral factors.

Place, publisher, year, edition, pages
2016. Vol. 74, no 5, 385-392 p.
Keyword [en]
Dental caries, epidemiology, socio-behavioral, socio-economic, tobacco
National Category
Dentistry
Research subject
Epidemiology
Identifiers
URN: urn:nbn:se:uu:diva-280078DOI: 10.3109/00016357.2016.1163733ISI: 000377809300012PubMedID: 27215270OAI: oai:DiVA.org:uu-280078DiVA: diva2:910064
Available from: 2016-03-08 Created: 2016-03-08 Last updated: 2017-11-30Bibliographically approved
In thesis
1. Epidemiological studies of Oral Health, development and influencing factors in the county of Dalarna, Sweden 1983–2013
Open this publication in new window or tab >>Epidemiological studies of Oral Health, development and influencing factors in the county of Dalarna, Sweden 1983–2013
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis is to describe the development of oral health and possible associations with socioeconomic and socio-behavioural factors, in an adult population over a period of 30 years. A further aim is to describe attitudes to, and demands of dental care, and the impact of oral conditions on quality of life.

The study sample consisted of 787-1158 individuals, aged between 35-85 years, randomly selected from Dalarna’s population register in 1982, 2002, 2007 and 2012. The studies were carried out in 1983, 2003, 2008 and 2013, and the participants responded to a questionnaire and a clinical examination of oral status.

There has been a substantial improvement in oral status in regard to the mean number of teeth, intact teeth, and less removable dentures over this period of 30 years. The proportion of individuals with alveolar bone loss decreased significantly between 1983 and 2008, but increased significantly between 2008 and 2013. Smoking was the overall strongest factor associated with alveolar bone loss, after adjustment for socioeconomic and socio-behaviour factors, age and number of teeth. Calculus, visible on radiographs, increased significantly between 2003 and 2013. The proportion of individuals with manifest caries declined significantly between 1983 and 2008, but seems to level out between 2008 and 2013. Socioeconomic and socio-behaviour factors were significantly associated with manifest caries. Preventive treatment, meeting the same caregiver as on previous visits, and information about treatment cost was reported to a significantly lower degree as important in 2013, compared with 2003 and 2008, and booking time for treatment was reported as more difficult in 2013, compared with earlier years. Regular recalls was reported as less important in 2013, compared with 2008. A third of the respondents reported oral impact on daily performance and irregular dental visits, limited economy for dental care, less than 20 remaining teeth, manifest caries and temporomandibular disorder were significantly associated with oral impact on daily performance.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2016. 55 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1191
Keyword
Periodontal disease, dental caries, epidemiology, edentulousness, removable dentures, smoking, socio-behavioural, socioeconomic, tobacco, oral health related quality of life
National Category
Dentistry
Identifiers
urn:nbn:se:uu:diva-280131 (URN)978-91-554-9501-5 (ISBN)
Public defence
2016-04-27, Föreläsningssalen, Falu lasarett, Falun, 10:00 (Swedish)
Opponent
Supervisors
Available from: 2016-04-05 Created: 2016-03-08 Last updated: 2016-04-12

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Edman, KristinaÖhrn, KerstinHolmlund, Anders

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