[Indications for and frequency of intraoral radiographs].

Radiographs are essential in dental practice today. Due to the exposure of patients to X-rays every radiograph has to be justified. The advantages and disadvantages of risks and diagnostic rewards have to be weighed against one another whenever X-ray imaging is considered.

[Trends in DMF in children and adolescents from 1990 to 2009. Research in a changing context].

Since 1987, research has very frequently been carried out in the Netherlands on the oral health of children and adolescents, so-called 'TJZ research'. For an analysis of the trends in caries experience DMF in children and adolescents in the Netherlands, the results of the TJZ research from 1990, 1996, 2005 and 2011 were used. The changing social context and the fact that the age groups studied were different in the different years of survey were taken into account.

A three-year randomized controlled trial in 6-year-old children on caries-preventive strategies in a general dental practice in the Netherlands.

A parallel-randomized controlled trial on caries-preventive strategies was conducted in a general dental practice with a mixed socioeconomic background patient population. The aim of this study was to test the hypothesis that, compared to regular care consisting of check-ups twice a year with professional fluoride applications and pit and fissure sealants in all permanent molars, a larger caries-preventive effect can be achieved by following a non-operative caries treatment and prevention (NOCTP) strategy or by following, in addition to regular care, an increased number of professional topical fluoride applications (IPFA). A total of 230 children (6.

[Websites of dental practices evaluated].

In 2013, a dental practice without a website is almost unthinkable. Using a sample of309 dentists drawn from the list of members of the Dutch Dental Association in 2012, a study was carried out to find out whether the dental practice of the general dental practitioner had a website. The content of each website was subsequently inventoried using a questionnaire.

Trends in oral health in young people in the Netherlands over the past 20 years: a study in a changing context.

Objectives: From 1 January 2006, the distinction between the health insurance fund and private insurance was abolished and a basic insurance package was agreed for everyone in the Netherlands. Dental treatment for young people below the age of 18 is reimbursed under the terms of this basic package. Dental treatment for adults is not covered in this basic insurance package.

[Referral of patients with non-odontogenic oral diseases to an oral and maxillofacial surgeon].

Patients with non-odontogenic oral diseases may be referred to an oral and maxillofacial surgeon by a dentist, a general medical practitioner or a medical specialist. At the department of Oral and Maxillofacial Surgery of a medical centre, a survey involving 96 referred patients with a non-odontogenic oral disease addressed the clinician who was responsible for the referral, the patient characteristics, and the nature and location of the oral disease. From the patients who regularly visited a dentist, 53% were referred by a dentist.

Non-participation in a randomized controlled trial: the effect on clinical and non-clinical variables.

Studies reporting clinical and non-clinical parameters of participants and non-participants of clinical trials are scarce. In the available studies non-participants were likely to show less favourable outcomes than participants on both socioeconomic parameters as well as on caries experience. However, the impact of non-participation on the total sample of the research population is not established.

Attitudes towards oral health among parents of 6-year-old children at risk of developing caries.

Objectives: Parental attitudes are likely to play a role in achieving and maintaining a desired level of oral health in children. To be useful in individually delivered caries prevention programmes, parental attitudes should be identified at individual level. Q-methodology has been proved successful in identifying attitudes in a wide range of disciplines but in dentistry Q-studies are scarce.

Dental students' part-time jobs in dental practices in the Netherlands.

Objective: In the Netherlands, the Individual Health Care Professions Act (IHCP Act) allows dental students, amongst other non-qualified individuals, to work under certain conditions in a dental practice. The aim of the study was to determine how many dental students have part-time employment in dental practice and which professional tasks they carry out. We also asked the dental students their opinion about the IHCP Act.

Value of bitewing radiographs for detecting approximal caries in 6-year-old children in the Netherlands.

Background: When diagnosing caries using clinical judgment only, the prevalence of approximal caries is highly underestimated. Yet, surveys on this topic predominantly included adolescents and young adults.

Aim: To determine the additional diagnostic value of bitewing radiographs in 6-year-old children and to detect approximal dentin caries in the primary dentition.

Dental hygiene students' part-time jobs in dental practices in the Netherlands.

Objective: Many students have paid employment while studying. In the Netherlands, the Individual Health Care Professions Act (IHCP Act) allows dental hygiene students to work under certain conditions in a dental practice. The aim of the study was to determine how many dental hygiene students have part-time job employment in dental practice and which professional tasks they carry out.

[Secular trends of caries prevalence among 6 and 12 year-old youths in the Netherlands].

In order to gain insight into the development of caries prevalence and caries experience among Dutch youth, a meta-analysis was carried out on epidemiological caries data collected in 5 and 6 and 11 and 12 year-olds between 1980 and 2009. From the present analysis it appears that after the mid-1980's a halt occurred in the decline of caries experience in the primary dentition among 5 and 6 year-olds. At the same time, the percentage of children with a caries-free primary dentition who were covered by public health insurance or participated in institutions for youth dental care decreased.

Factors increasing the caries risk of second primary molars in 5-year-old Dutch children.

Background: Caries is still a prevalent condition in 5-year-old children. At present, knowledge regarding some aetiological factors, like deciduous molar hypomineralization (DMH), is limited.

Aim: To investigate aetiological factors both directly and indirectly associated with caries in second primary molars.

[Study on delegation. Dental activities by students in dental practices].

Some dental students in the Netherlands have a job in a dental practice next to their study, as the Individual Health Care Professions Act (introduced in 1997 as Law BIG) allows. The aim of the study was to determine how many dental students of the Academie Centre for Dentistry Amsterdam actually work in a dental practice, which kinds of dental activities they perform and whether these meet the requirements of the Act mentioned before. All dental students (n = 947) received a questionnaire by e-mail.

[The restorative care index in children 1. Factors concerning the child].

In 2007 a study was undertaken of the restorative care index of the teeth of children under the age of 18. The aim of this study was to gain insight into the factors associated with the restorative care index in children. Factors investigated were (post-) brushing, inspection frequency, sweets-consumption frequency, socio-economic status and treatment or lack thereof by a general practitioner or dentist who works in a clinic for child health care.

Oral and salivary changes in patients with end stage renal disease (ESRD): a two year follow-up study.

Objectives: To compare oral health, salivary flow rate, xerostomia and thirst in end stage renal disease (ESRD) patients remaining on dialysis treatment and after renal transplantation.

Design: Longitudinal observation.

Setting: ESRD patients recruited from dialysis centres in Amsterdam, The Hague and Utrecht, The Netherlands.

[Trends in oral healthcare. Caries prevalence and frequency of visits to the dentist for checkups].

In 2003 the project 'Changes in oral health and preventive behaviour'was carried out for the sixth time in succession in The Netherlands. Children and adolescents were asked to fill out a questionnaire and to participate in an oral health examination. Compared to the 1996/1997 results 9-year-olds had a lower incidence of FS and DMFS, 14-year-olds had a higher incidence of DS, and 20-year-olds had a larger number of DS and a smaller number of FS, DMFS and DMFT in 2003.

The oral health status of dentate patients with chronic renal failure undergoing dialysis therapy.

Objective: The aim of this study was to compare the oral health status of chronic renal failure (CRF) patients on renal replacement therapy with a matched reference population.

Design: Cross-sectional study.

Subjects: Forty-two dentate CRF patients--aged 25-52 years old--were matched with a reference group of 808 dentate subjects.

[Dental caries in the Netherlands at the turn of the century].

In this paper an overview is given of recent studies concerning the prevalence of dental caries in children and adults in The Netherlands. Compared to the oral status in the past, the prevalence in children is still low. The decrease of caries is now also visible in adults up to the age of 45 years.

Approximal caries increment: a three-year longitudinal radiographic study.

Aim: To determine, for different age groups, the approximal caries increment in a three-year longitudinal retrospective study and to investigate the relationship between the caries increment and self-reported measures for oral health behaviour, dental knowledge and attitude (cynicism, health concern and motivation).

Subjects: 14, 17, 20 and 23-year-olds, who participated in a clinical epidemiological survey. Bitewings were taken of approximately 52% of the participants.