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Biomedical subjects

B Owall

Publications and source records attributed to B Owall.

At least 37 records · Page 2Linked to original sources
PubMed1988

A retrospective 5-year study of dental treatment in a group of elderly persons.

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.

Aged↗
PubMed1988

Age retirement in women. III. An odontological study.

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.

Aged↗
PubMed1986

Prosthetic epidemiology.

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.

Adult↗
PubMed1982

Reproduction of details using dental stones and investment material in impressions of elastomers and waxes.

In the fabrication of crowns and inlays it is very important that all the details of the impression are exactly reproduced by the cast. These requirements prevail between elastomeric impression materials and dental stones as well as between waxes and investment materials. Inadequate filling of the details of the impression will result in rounded inner corners of the casting, which then may not properly seat on the prepared tooth. Two brands of elastomeric impression material, dental stone, wax, investment material and wetting agent were chosen to study the reproduction of details. A master model of stainless steel, shaped like a truncated cone with a convex top and 60 degrees threads, was used. The shape of this model made it possible to make microscopic measurements of the reproduced detail of the threads. No significant difference, by different prepouring treatment of the impressions was found in reproducing details with elastomeric impression materials and dental stones. All combinations of elastomeric impression materials and dental stones reproduced, however, significantly more details than combinations of waxes and investment materials. The relevance of transferring conclusions from the laboratory investigation to clinical conditions are discussed as well as the clinical value of reproducing details.

Calcium Sulfate↗