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Clinical course of chronic periodontitis: III. Patterns, variations and risks of attachment loss
School of Dental Medicine, University of Berne Switzerland.
School of Dental Medicine, University of Berne Switzerland.
School of Dental Medicine, University of Berne Switzerland.
School of Dental Medicine, University of Berne Switzerland.
Vise andre og tillknytning
2003 (engelsk)Inngår i: Journal of Clinical Periodontology, ISSN 0303-6979, E-ISSN 1600-051X, Vol. 30, nr 10, s. 909-18Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

AIM: The purpose of this study was to assess the rate of attachment loss during various stages of adult life in a well-maintained middle-class population.

MATERIAL AND METHODS: The data originated from a 26-year longitudinal study of Norwegian males who had received regular and adequate dental care and practised daily oral home care. The initial examination in 1969 included 565 individuals aged between 16 and 34 years. Subsequent examinations took place in 1971, 1973, 1975, 1981, 1988 and 1995. Thus, the study covers the age range of 16-59 years. The rate of the annual attachment loss was calculated as the difference between the individual mean attachment loss between two examinations divided by the years between examinations. The mean annualized relative risk of attachment loss was calculated as the frequency distribution of sites with initial periodontal attachment loss (loss of attachment at the first time of occurrence > or = 2 mm) and healthy sites (loss of attachment always < 2 mm). For comparison of significant changes in annual attachment loss rates between the age groups and mean annualized relative risks of attachment loss as they proceeded through adult life, the Wilcoxon Mann-Whitney U-test was used.

RESULTS: The mean overall individual attachment loss during 44 years (between 16 and 59 years) totaled 2.44 mm (range 0.14-2.44 mm), averaging an annual mean rate of 0.05 mm/year. The highest annual rate of attachment loss occurred before 35 years of age (0.08-0.1 mm/year), after which the mean annual rate decreased to about 0.04-0.06 mm/year for the next three decades of life leading to 60 years. The mean annualized relative risk of initial attachment loss increased significantly from adolescence (1.2%) to the maximum at 30-34 years of age (6.9%). After the age of 34 years, the risk of initial attachment loss decreased again, but after the age of 40 years, another continuous increase was observed.

CONCLUSIONS: Over a 26-year period, 25% of the subjects went through adult life with healthy and stable periodontal conditions. The remaining 75% developed slight to moderately progressing periodontal disease with progression rates varying between 0.02 and 0.1 mm/year with a cumulative mean of loss of attachment of 2.44 mm as they approached 60 years of age. The annual mean rate and the mean annualized risk of initial attachment loss were highest between 16 and 34 years of age. Only 20% of the sites continued to lose further attachment during the remainder of the observation period, and less than 1% of the sites showed substantial loss of attachment (> 4 mm).

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2003. Vol. 30, nr 10, s. 909-18
HSV kategori
Identifikatorer
URN: urn:nbn:se:mau:diva-44526DOI: 10.1034/j.1600-051x.2003.00401.xPubMedID: 14710771OAI: oai:DiVA.org:mau-44526DiVA, id: diva2:1578130
Tilgjengelig fra: 2021-07-05 Laget: 2021-07-05 Sist oppdatert: 2021-07-06bibliografisk kontrollert
Inngår i avhandling
1. The Role of gingivitis in the loss of periodontal attachment and teeth.
Åpne denne publikasjonen i ny fane eller vindu >>The Role of gingivitis in the loss of periodontal attachment and teeth.
2005 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

In randomized parallel longitudinal studies conducted in Norway between 1969 and 1995, and Sri Lanka between 1970 and 1990 the initiation and progression of periodontal disease was investigated. The two groups showed geographical, racial, cultural, socioeconomic and educational differences, and they represented extremes as to perceived severity of periodontal disease, general health care delivery systems and to dental care. The Sri Lanka population had never been exposed to any program of oral professional or self care. The Norwegian population, on the other hand, was exposed to conventional care throughout life starting at age 3 years. All results presented in this thesis are based only on analyses of the data collected from this 26-year longitudinal investigation in a group of middle-class men Norwegian men aged between 16 and 59 years. 565 subjects were recruited in 1969 and 223 subjects completed the study in 1995. A total of 7 surveys were staged during the observation period. Gingivitis was present in all subjects. The severity of gingival inflammation varied little throughout life. Initial loss of attachment was seen already at 16 years of age. Mean individual loss of attachment increased steadily during the thirties and forties and reached a maximum of 2.44mm at age 59 years. Sites that never showed any inflammation sings experienced the least mean cumulative loss of attachment (1.86mm) followed by sites with slight inflammation signs (2.25mm) over the 26-year observation period. In sites that consistently bled on probing over 26 years, the mean loss of attachment was 3.23mm. Gingival sites that bled on probing yielded an odds ratio of 3.22 to lose attachment as compared to healthy sites over the 26 year observation period. Throughout the observation period, 15% of the subjects accounted for the loss of 126 teeth out of 13285 teeth, an extremely low tooth mortality rate throughout 60 years of life. When teeth lost were analyzed relative to the long term status of their surrounding gingiva, it appeared that teeth surrounded by inflammation-free gingiva were maintained for a tooth age of 51 years, while teeth consistently surrounded by inflamed gingiva had a 46 times higher risk of being lost.

sted, utgiver, år, opplag, sider
Malmö University, 2005. s. 73
Serie
Malmö University Odontological Dissertations, ISSN 1650-6065
Emneord
Gingivitis complications, Periodontal diseases, Dental Plaque, Dental Plaque Index, Longitudinal Studies, Oral Health
HSV kategori
Identifikatorer
urn:nbn:se:mau:diva-7699 (URN)7947 (Lokal ID)91-628-6207-3 (ISBN)7947 (Arkivnummer)7947 (OAI)
Tilgjengelig fra: 2020-02-28 Laget: 2020-02-28 Sist oppdatert: 2022-06-27bibliografisk kontrollert

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