Biomedical subjects
Publications and source records attributed to B Owall.
The Swedish Patient Insurance Scheme covers treatment injuries and guarantees the replacement of failed removable prostheses for 1 year and fixed prostheses for 2 years after fitting. In this paper, 573 dental cases are analysed for a 3-month period in 1986, during which crowns and bridges formed the vast majority of failed treatments that were reported.
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In a retrospective study, 50 patients over 70 years of age, selected from a private specialist clinic for fixed and removable prosthodontics, were studied. They all had remaining natural teeth and had undergone complete dental treatment at least 5 years before. The age-range was 70-96 and they had been treated 6-25 years before the study. The patients had on average 13.9 teeth. During the five-year observation period, 32 patients developed caries, with a mean number of 5.0 lesions (range 1-22). 79 fillings were made due to other defects than caries. 25 root canal fillings were made, due to caries lesions after loosened fillings or crowns in 5 cases and for other reasons than caries in 20 cases. 4.4% of the natural teeth had to be extracted. 19 crowns, 11 bridges and 1 splint were made. The prophylactic periodontal and cariological care delivered during the 5 years varied from 0 to 350 minutes (mean 89). The time for prophylactic treatment was not significantly correlated to the total number of natural teeth per patient but instead to the number of periodontally severely involved teeth (i.e. with 50% or less marginal bone support). The overall conclusion is that 3.5 times as much chairside treatment time was used for therapeutic measures as for prophylaxis.
This study presents data from clinical, roentgenological and interview examinations of 116 women at the age of retirement from work. The study was part of a comprehensive investigation including general health, health behaviour and psychological status. The women were examined 5 months before and 5 months after retirement. Oral status as well as dental health behaviour was recorded. Forty per cent had been treated with removable dentures of different types; 14 women were edentulous in both jaws. The dentate women had on an average 19.8 teeth, of which 83% were either filled or decayed. Eighty-one per cent claimed that they visited a dentist regularly and about 80% actually did so during the observation period. A majority of these were included in a recall system. Almost 1/3 experienced oral dryness, occasionally or constantly. Oral dryness was combined with a somewhat higher frequency of decayed surfaces. About 22% considered themselves to have, from a dental point of view, improved their eating habits after retirement. The study shows no evidence of decline in oral health behaviour after retirement.
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The need for an epidemiological method which focuses upon the problems of missing teeth, tooth spaces and prosthetic treatment is emphasized. From the prosthetic viewpoint the distinction between missing teeth and tooth spaces must be made and examples are given to show that up to 20 per cent of missing teeth do not give rise to tooth space. The presentation of the prosthetic parameters per tooth is recommended using the six alternatives: tooth present; tooth missing (open space); tooth missing (closed space); tooth replaced by pontic in fixed bridge, by removable partial denture, or by complete denture. In the presentation of the mean number of existing teeth, fixed bridge pontics should be included as they serve as natural teeth both aesthetically and functionally. Data on removable dentures, or edentulism without denture wearing, should be presented in such a way that comparisons at jaw level as well as at person level can be made. A system for this is described. The method may be used in industrialized countries where there is much prosthetic treatment as well as in developing countries with few health services. Comparisons will still be meaningful.
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