Periodontal treatment need of the Dutch 15-74-year-old population.
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Adolescent↗
Biomedical subjects
G J Truin
Publications and source records attributed to G J Truin.
Performance of some diagnostic systems in examinations for small occlusal carious lesions.
The objective of this study was to compare the performance in occlusal caries diagnosis of various available diagnostic systems when applied to the same teeth. The sample investigated consisted of 13 children for whom 4 premolar and 19 molar teeth were judged to require a sealant. The indication was based on the criteria 'fissure discoloration', 'enamel decalcification' and 'absence of dentinal decay'. For predefined locations within these occlusal fissures a diagnosis was obtained by the following diagnostic systems: clinical examination, examination on fiber-optic transillumination (FOTI), fissure discoloration, electrical resistance measurement, radiographic examination and ratings of fissure morphology. Tooth material was removed until no (more) carious enamel or dentin was left. Two dentists then jointly decided on the status of decay for each of the defined locations within the fissure. These ratings served as the 'gold standard' diagnoses. The electrical resistance measurement with a sensitivity of 0.96 and a specificity of 0.71 was the only diagnostic tool with acceptable performance. Radiographic diagnosis was characterized by a moderate sensitivity and specificity. All other diagnostic systems had either very low sensitivities or very low specificities, or both. The positive predictive value of FOTI examination and the negative predictive value of the electrical resistance measurements were very high, irrespective of the prevalence of occlusal dentinal decay.
Adolescent↗
Exposure to low levels of fluoride and dental caries in deciduous molars of Tanzanian children.
In general, the prevalence of caries in African children may be classified as low to very low. In order to reduce this level even further, methods including the practice of good oral hygiene and administration of fluoride, e.g. water fluoridation, have been suggested. In 1984, 1986 and 1988, a mixed-longitudinal study amongst schoolchildren was carried out in a rural and urban area of Tanzania. In the rural area, shallow wells had been constructed at different periods in time in eight villages since the late 1970s. The drinking water in three of the villages contained fluoride in the range of 0.5-0.8 ppm (fluoridated) and contained less than 0.4 ppm fluoride in the remaining five villages (non-fluoridated). These fluoride levels were disclosed to the authors only during the course of the study. Thus the data were reanalysed to investigate the effects of fluoride and length of fluoride exposure on caries experience in the deciduous dentition. The study was carried out amongst 522 7- and 8-year-olds. Fluoride tablets were not used and toothpaste was virtually unavailable. Three periods of fluoride exposure were identified, i.e. 3, 5 and 7 years. The outcome variable was the mean dmft score in deciduous molars whereas the explanatory variables were age, length of fluoride exposure and year of investigation. Nutrition was considered a co-variate. Analysis of co-variance revealed a fluoride effect (p = 0.0004). Regression analysis did not show significant relationships between the mean dmft score and the three periods of fluoride exposure.(ABSTRACT TRUNCATED AT 250 WORDS)
Child↗
Demand and need for treatment of craniomandibular dysfunction in the Dutch adult population.
A nationwide survey of oral conditions, treatment needs, and attitudes toward dental health care in Dutch adults was carried out in 1986. One of the aims of the study was to investigate the perceived need and demand for treatment of craniomandibular dysfunction (CMD). A sample of 6577 persons (15-74 yrs of age), stratified for gender, age, region, and socio-economic status, was contacted. Of this sample, 4496 persons participated in the behavioral part of the study, of which 3526 were examined clinically. The CMD-treatment demand was based on (1) CMD complaints in the past, (2) CMD complaints at present, and (3) an anticipated increase of the present complaints. CMD was both anamnestically and clinically assessed, independently by different examiners. A total of 21.5% of the Dutch adult population reported dysfunction, but 85% of these perceived no need for treatment. With most of the remaining 15% either seeking or intending to seek treatment (or having had it before), a figure of 3.1% can be used to summarize the actual level of treatment need for CMD in the Dutch adult population.
Adolescent↗
Accuracy of visual inspection, fiber-optic transillumination, and various radiographic image modalities for the detection of occlusal caries in extracted non-cavitated teeth.
Occlusal caries lesions may progress into the dentin without this resulting in a macroscopic breakdown of the enamel surface. Imaging methods may therefore be needed to aid in the visual detection of occlusal caries. It was the aim of this study to evaluate diagnostic accuracy in a laboratory set-up of visual inspection (VI), fiber-optic-transillumination (FOTI), conventional radiography (CR), and two digital radiographic image modalities (DRm and DRr) for detection of occlusal caries in clinically non-cavitated teeth. Eighty-one extracted third molars from 18-20-year-old males were assessed by four observers on a five-rank confidence scale by the five methods. Ground sections (500-600 microns) served as validation for true state of disease: 1 = no caries in dentin, 2 = caries just beyond dentino-enamel junction, or 3 = deep dentinal caries, halfway or more to the pulp. ROC analysis was performed on the basis of the confidence rank scale data on two diagnostic thresholds, T1 = caries in dentin (disease state 2+3) and T2 = caries deep in dentin (state 3). On the T1 level, use of the FOTI method gave on average the most accurate diagnosis, closely followed by VI, both performing better than use of radiography. On the T2 level, all five diagnostic methods performed equally well.
Adolescent↗
[Veterinary dentistry in dogs and cats; a survey among veterinarians].
To gain an insight into the prevalence of dental disease in dogs and cats and forms of dental treatment, a postal survey was conducted among veterinarians in the Netherlands. Seventy per cent of the veterinarians replied that they made routine oral examinations of dogs and cats. Of dental diseases observed in dogs and cats periodontal diseases were stated to be the most common dental problem. Dental treatments, such as removal of calculus and extractions, were performed by nearly all veterinarians. Fifty per cent of the veterinarians asked for assistance of a dentist when a dental treatment could not be carried out by themselves. More education in veterinary dentistry to veterinary students and veterinarians is required.
Animals↗
Plaque, calculus, gingival bleeding and type of tooth cleaning device in a Tanzanian child population in 1984, 1986 and 1988.
In 1984, 1986 and 1988 a mixed-longitudinal study was carried out to determine the prevalence of plaque, calculus, gingival bleeding and type of tooth cleaning device amongst school children in Morogoro, Tanzania. The background parameters considered were age, geographical location and sex. The reproducibility of the methods of diagnosis was assessed. In general, more children possessed a chewing stick than a toothbrush, except urban children. The prevalence of visible plaque decreased and the prevalence of calculus increased with increasing age. Gingival bleeding was not age-dependent. Urban children had significantly more surfaces covered with visible plaque, but had a significantly lower prevalence of calculus, than rural children. Boys showed a significantly higher prevalence of visible plaque and calculus than girls. In the majority of those with gingival bleeding, only 1 of the 6 examined papillae was involved, most often the mesio-lingual papilla of the 3.6. The children had not been subjected to organized oral health care and professional intervention. The findings of the study indicate the need for organized school-based oral hygiene programmes in the area in order to improve the periodontal health of these children.
Adolescent↗
The problem of participation in the Dutch National Dental Survey.
In 1986 a nationwide dental survey was carried out in the Netherlands. The aims of the study were to assess the prevalence of oral diseases, need and demand for dental care and oral selfcare in the Dutch population aged 15-74 yr. This paper describes the general sampling and analysis procedures to detect selectivity in the participation. Irregular dental attenders seemed to be underrepresented in the final sample. Poststratification was used to overcome this problem of selectivity.
Adolescent↗
Objective and subjective need for cosmetic dentistry in the Dutch adult population.
In order to assess the objective and subjective need for cosmetic dentistry in the Dutch adult population in 1986 a stratified sample of 2784 dentate persons, aged 15-74 yr, participated in the study. The aesthetics of anterior teeth and first premolars in the maxillary mandibular arch were determined by dental examiners as well as by the examinees. According to the dental examiners 16-63% of the people in the age range from 15 to 74 yr were in need of cosmetic dental care. Based on the patient's opinion (subjective need) these percentages varied between 18 and 40% in the different age groups. The discrepancy between the objective and subjective assessment in the percentage of people in need of cosmetic dental care increased with age.
Adolescent↗
Malocclusion and orthodontic treatment need of 15-74-year-old Dutch adults.
In 1986 a nationwide dental survey was performed in the Netherlands. This article describes the prevalence of dentofacial anomalies in the age group 15-74 yr, as well as the subjective and objective need for orthodontic treatment. The main findings were: severe crowding in the mandible was found in approximately 15%; an Angle Class II situation was seen in 28%; a maxillary overjet of greater than 5 mm was found in 23%; orthodontic treatment had or was being performed in approximately 25%; 45% of orthodontic treatment was carried out by a general practitioner; using professionally defined need, 39% of the population required treatment whereas only 14% of the people felt that this treatment was necessary.
Adolescent↗
Fluoride in drinking water and caries progression in a Tanzanian child population.
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Analysis of Variance↗
Tooth loss and dental caries in Dutch adults.
As part of a nationwide dental survey in 1986 a caries study was executed in 3526 adults, aged 15-74 yr, living in 40 residential areas in The Netherlands. Marked differences were found between the social classes distinguished (more edentates in the lower classes) and between the different regions. It is supposed that these differences reflect the lack of dental manpower in the past.
Adolescent↗
Health through oral health; guidelines for planning and monitoring for oral health care: a critical comment on the WHO model.
Recently a joint working group of WHO/FDI published guidelines for planning and monitoring oral health care. In the report a model for calculations of future need for dental manpower was introduced as an effective planning tool. An analysis of whether the WHO model is appropriate to calculate the future need for manpower planning was carried out. It appears that the model has serious methodological shortcomings. The model expects the user to know the future oral care needs concerning preventive, special group, surgical, orthodontic, and periodontal care. In calculating future needs for restorative and prosthetic care, the model restricts itself to looking back in time and roughly calculating what has happened in the past, assuming this will happen again.
Adolescent↗
Optical quantitation and radiographic diagnosis of incipient approximal caries lesions.
The objectives of this study were to test the applicability of photocell measurements in approximal caries diagnosis and to evaluate the use of radiographs as validating criterion. Forty extracted premolars were selected, and the progression of the approximal lesions was graded clinically and radiographically by three examiners. Each tooth was transilluminated from the occlusal surface, and the throughput of light at the approximal surface was measured by a photocell. Together with clinical examination, the results of microradiographic analysis served as validating criterion in this study. The results indicate that photocell measurements can be useful in the diagnosis of incipient approximal caries lesions. Radiographs have a restricted value as validating criterion in diagnostic studies pertaining to incipient caries.
Bicuspid↗
Trends in caries prevalence in 5-, 7- and 11-year-old schoolchildren in The Hague between 1969 and 1989.
Starting in 1969, periodic cross-sectional examinations of schoolchildren have been carried out in the city of The Hague. In 1989 the periodic examinations were continued and, in general, caries prevalence was found to be very low; D3MFS values ranged between 1.5 and 2.2 at age 11.8 years. Compared to 1984, 5-year-old-children of low and medium socio-economic levels (SES) in 1989 had significantly higher d3mfs values (p less than 0.01), mainly due to a marked increase in decayed surfaces per child; a significant increase in caries experience of the deciduous dentition amongst 7-year-olds of low social level was found (p less than 0.01). A further reduction of D3MFS values for 7-year-old children of low and medium SES could be observed in 1989 compared to 1984. Between 1978 and 1989 a marked D3MFS reductions amongst 11-year-olds in the three social levels was found. Possible explanations for the observed differences in caries experience between 1984 and 1989 are discussed.
Child↗
[Veterinary dentistry in dogs and cats. Results of a postal inquiry in The Netherlands].
In order to get insight in the prevalence of dental diseases in dogs and cats and dental treatments, a postal survey amongst veterinarians in the Netherlands was carried out. 70% of the veterinarians answered to practice routine oral examinations of dogs and cats. Of dental diseases observed in dogs and cats periodontal diseases were most often mentioned. Dental treatments as calculus removal and extractions were performed by nearly all veterinarians. 50% of the veterinarians asked for assistance of a dentist in case a dental treatment could not be performed by themselves.
Animals↗
[Trends in dental caries among five- and seven-year-old school children in The Hague. Is the caries prevalence among the young changing?].
Starting in 1969 cohort examinations on schoolchildren are carried out in the city of The Hague. In 1989 the periodical examinations were continued. Compared to 1984, five-year-old children of low and medium SES had in 1989 significantly higher d3mfs values, mainly due to a marked increase in decayed surface per child; a significant increase in caries experience of the deciduous dentition amongst seven-year-olds of low social level was found. A further reduction of D3MFS values for seven-year-old children of low and medium SES could be observed in 1989 compared to 1984. Compared to children of Dutch origin, children of ethnic minorities (Turkey and Marokko) had a significantly higher caries experience.
Child↗
[National dental health survey. 4. Dental visits. 1. Behavior and knowledge].
This paper is part of a series on the national oral health survey in the Netherlands (LEOT-project). Previous articles described the development of the questionnaires and the results concerning oral hygiene and nutrition. This paper presents the results as for the dental attendance behaviour and knowledge concerning it of the dentate Dutch population. As an average the Dutch dentate visited the dentist 2.4 times a year. 89% visited the dentist in the last year of this investigation. The largest part of the visits (68%) concerned 'check-up visits'. 14% did not visit the dentist for a check-up. Knowledge about dental visits is rather limited; especially concerning treatment possibilities.
Dental Care↗