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Biomedical subjects

R C Burgersdijk

Publications and source records attributed to R C Burgersdijk.

At least 19 recordsLinked to original sources
PubMed1992

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↗
PubMed1991

[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↗
PubMed1990

[The dental self care of the dentate Dutch population; nutrition].

This paper presents the results of a nationwide dental survey as far as the nutrition behavior and its determinants of the dentate Dutch population is concerned. It is found that the avoidance of sugar containing products for the sake of dental health is not very common; only 8% of the dentate population shows this behavior rather frequently. Despite the existence of a fair amount of knowledge about the relation of sugar consumption and dental health, the main part of the dentate population does not belief in the effectiveness of sugar avoidance in the preservation of the teeth. As an average the dentate Dutch takes, apart from the meals, nearly eight sugar containing products a day.

Diet, Cariogenic↗
PubMed1990

[Dental self care of the dentate Dutch population: oral hygiene].

This paper is part of a series on national oral health survey in The Netherlands (LEOT-project). It presents the results as for the oral hygiene behavior and its determinants of the dentate Dutch population. Nearly all dentate Dutch people (97.5%) reports to clean their teeth with an average of nearly two times a day. The use of other cleaning means is not very common. There is a fair amount of knowledge about dental hygiene. The great majority (about 85%) indicates that toothbrushing for them is an automated behavior, a habit.

Dental Health Surveys↗
PubMed1989

[Dental survey (Leot-project): aims, sampling and participation].

In 1986 a nationwide dental survey was carried out in the Netherlands. Aims of the study were to assess the prevalence of dental diseases, needs and demands for care and dental behavior in the Dutch adult population aged 15 years and more. The paper describes sampling procedures, stratification factors and field organization of the study. As a result, representative (baseline) data of prevalence and need for care of dental diseases are now available. Those data will be published in a number of separate papers in this journal.

Adolescent↗
PubMed1989

[Prevalence of TMJ signs and symptoms in the Dutch adult population].

In 1986 a nationwide dental survey was carried out in The Netherlands. One of the sub-objectives of the study was to assess the prevalence of TMJ signs and symptoms in the Dutch adult population. A stratified sample of 3526 persons, aged 15 to 74 years, participated in the study. Participants in the clinical examinations were asked by questionnaire about subjective signs and symptoms of TMJ. Clinical examination of joint sounds, deviation and pain during mandibular movements were also performed. With regard to the Helkimo classification it can be stated that 78.4% of the participants had no subjective signs and symptoms of TMJ, whereas clinically recorded 55.6% were symptomfree. 4.9% had severe subjective signs and symptoms, and 2.8% had clinically recorded severe signs and symptoms of TMJ. In general a higher percentage of women in comparison to men showed signs and symptoms of mandibular dysfunction. Only 1.4% of the people with severe subjective signs and symptoms had sought for professional help.

Adolescent↗
PubMed1989

[Periodontal disease in Dutch adults].

A nationwide epidemiological survey was carried out on a stratified sample (age, sex, SES and area) of 2784 dentate people in the age of 15-74 years. Prevalence of plaque, gingivitis, calculus and pockets was recorded. About 85% of the individuals had gingivitis. The percentage of individuals with calculus varied from 40% (15-19 years old) to 76% in the oldest age group (65-74 year). More then 50% of the people, aged 30 and over had pockets greater than 3.5 mm.

Adolescent↗
PubMed1989

[Periodontal treatment need in the Dutch adult population].

In 1986 a nationwide dental survey was carried out in The Netherlands. One of the objectives of the study was to assess the periodontal treatment need in the Dutch adult population. A stratified sample of 3526 people aged 15 to 74 years, participated in the study. Based on the Community Periodontal Index of Treatment Needs (CPITN) it can be stated that more than 90% of the adult population of 25 years and over needs oral hygiene education and scaling in one of more sextants (TN2). Complex treatment, scaling and oral hygiene education (TN3) is needed in 19 to 28% of the population aged 45 year and over. The estimated time for performing the necessary periodontal treatments, based on four different time assessments, varied from 12.4 to 31.1 million hours.

Adolescent↗
PubMed1989

[An attempt to decrease periodontal diseases. A scenario-experiment].

The prevalence of periodontal diseases in the Dutch population is high. Is the employment of a great number of dental hygienists in the future the answer to this problem? With the aid of a computer model of the Dutch dental health care system this question was analysed. Forecasting for the year 2015 showed no considerable decrease of the prevalence of periodontal diseases, despite the employment of 2000 dental hygienists from 1990 on. Time and financial limitations in periodontal treatments were the main reasons for this rather disappointing result.

Dental Hygienists↗
PubMed1989

[Lesions of the oral mucosa].

Representative data were gathered about the prevalence of mucosal lesions in Dutch adults (15-74 years old). The reliability of the observation methods was moderate. Some data were not usable for this reason. Only a low percentage of people without a denture, had a mucosal lesion. About 60% of the people with a denture had hyperaemia of the palatine mucosa. A flabby ridge exists in 34% of the 35-54 year olds and in 51% of the 55-74 year olds with such a prosthesis.

Dental Health Surveys↗
PubMed1989

[Nationwide survey in the Netherlands (Leot-Project). 7. Dental prostheses].

Data are presented about the prevalence of full and partial dentures and dental bridges in the adult population of The Netherlands. Furthermore, the quality of full dentures and the resorption of the jaws were studied. Differences were found between the social classes (a higher percentage of people with dentures in the lower classes) and between the various regions of the country (more denture wearers in the Northern region). Only a low percentage of the full dentures met all the quality requirements. This can be possibly explained by the fact that resorption of the lower jaw was severe in a majority of the cases.

Bone Resorption↗
PubMed1989

[Cosmetic dentistry].

A nationwide dental survey was carried out in The Netherlands. One of the objectives of the study was to assess the objective and subjective need for cosmetic dentistry in the Dutch adult population. A stratified sample of 2784 dentate persons, aged 15 to 74 years, participated in the study. The esthetics of anterior teeth and bicuspids in upper and lower arches were assessed by the dental examiners as well as by the examinees. Analyses of the data showed that 15.8 to 62.6 percent of the people in the age-range form 15 to 74 years was in need for cosmetic dental care, according to the dental examiners. Based on the patient's opinion (subjective need) these percentages varied between 17.5 and 40.4 percent. The discrepancy between the objective and subjective assessment in the percentage of people in need for cosmetic dental care increased with age. The results indicate that there is a need for cosmetic (restorative) dentistry in The Netherlands.

Adolescent↗
PubMed1989

[Dental characteristics and orthodontic treatment need of the Dutch adult population].

In this article the results are presented of a nationwide representative study of dental anomalies in the group of 15-74 years Dutchmen. Also the subjective and objective need of orthodontic treatment in the age group 15-34 years is described. The principal findings are: of the 15-19 years olds, 27% is treated with orthodontic appliance; general practitioners performed 45% of these orthodontic treatments; --unsatisfied with the position of the front teeth is 25% of the 15-34 year old; an objective need for treatment is found in 39% of this age group; in 14% there is both an objective and a subjective need for treatment; both the subjective and objective need of orthodontic treatment is greater in the group of persons who were treated in the past than in the group of persons who never were treated.

Adolescent↗