In 1992 a follow-up on the Dutch National Dental Survey of 1986 (DNDS) was performed. The main objective was to detect and analyze changes in oral self care, dental attendance, and oral health status. This paper will focus on the DNDS adults wearing complete dentures. Changes over a 6-yr period will be presented of: dental attendance, denture satisfaction and wearing of the complete dentures, and denture treatments. A postal questionnaire was used: 232 persons (64%) participated in the study. Analysis of Variance (ANOVA) was used to study the effect of dental and social variables on observed changes since 1986. Risk ratios (RR) were computed to clarify the actual effects of these variables. With respect to dental attendance, a shift towards visits for denture check-ups was found, thought to reflect the respondents' concern for their complete dentures (RR = 1.6). A small shift towards more visits because of denture problems was found. This was attributed to denture treatments that had taken place between 1986 and 1992 (RR = 2.8). With respect to changes in denture satisfaction, no influence of denture treatments could be noted, but a relation was found with a variable indicating the imperfection of the complete dentures as felt by the respondents (RR = 2.8). In 31% of the respondents some denture treatment had been performed since 1986. No objective dental criteria of complete dentures and denture bearing areas had influenced these denture treatment decisions, but only respondents' subjective criteria (RR = 1.9-2.9).
Chewing, drinking, and occasional tooth grinding will result in physiological tooth wear during a lifetime. Extreme challenges, such as bruxism or habitual chewing on foreign objects, may lead to excessive wear. Recently, the role of erosion in accelerating mechanical tooth wear has been recognized, but the interplay between chemical and mechanical wear processes has not been extensively studied. Our laboratory recently introduced a novel oral wear simulation device, the Rub&Roll, that enables the user to perform wear and loading studies separately or simultaneously in an erosive and/or abrasive environment. This manuscript describes an application of the device: the combined mechanical and erosive loading of extracted human (pre)molars in a simulated chewing movement, with a controlled application of force, velocity, fluid, and time, and the application of non-contact profilometry in visualizing and measuring the resulting wear pattern. The occlusal morphology that was created in the experiment with the highest loading level is very similar to the clinical presentation of erosive wear.
Abstract 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.
Chewing, drinking, and occasional tooth grinding will result in physiological tooth wear during a lifetime. Extreme challenges, such as bruxism or habitual chewing on foreign objects, may lead to excessive wear. Recently, the role of erosion in accelerating mechanical tooth wear has been recognized, but the interplay between chemical and mechanical wear processes has not been extensively studied. Our laboratory recently introduced a novel oral wear simulation device, the Rub&Roll, that enables the user to perform wear and loading studies separately or simultaneously in an erosive and/or abrasive environment. This manuscript describes an application of the device: the combined mechanical and erosive loading of extracted human (pre)molars in a simulated chewing movement, with a controlled application of force, velocity, fluid, and time, and the application of non-contact profilometry in visualizing and measuring the resulting wear pattern. The occlusal morphology that was created in the experiment with the highest loading level is very similar to the clinical presentation of erosive wear.
Abstract 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.
Considering the changes in dental healthcare, such as the increasing assertiveness of patients, the introduction of new dental professionals, and regulated competition, it becomes more important that general dental practitioners (GDPs) take patients' views into account. The aim of the study was to compare patients' views on organizational aspects of general dental practices with those of GDPs and with GDPs' estimation of patients' views. In a survey study, patients and GDPs provided their views on organizational aspects of a general dental practice. In a second, separate survey, GDPs were invited to estimate patients' views on 22 organizational aspects of a general dental practice. For 4 of the 22 aspects, patients and GDPs had the same views, and GDPs estimated patients' views reasonably well: 'Dutch-speaking GDP', 'guarantee on treatment', 'treatment by the same GDP', and 'reminder of routine oral examination'. For 2 aspects ('quality assessment' and 'accessibility for disabled patients') patients and GDPs had the same standards, although the GDPs underestimated the patients' standards. Patients had higher standards than GDPs for 7 aspects and lower standards than GDPs for 8 aspects. On most aspects GDPs and patient have different views, except for social desirable aspects. Given the increasing assertiveness of patients, it is startling the GDP's estimated only half of the patients' views correctly. The findings of the study can assist GDPs in adapting their organizational services to better meet the preferences of their patients and to improve the communication towards patients.
This systematic review aimed to determine the caries‐inhibiting effect of chlorhexidine (CHX) varnishes on the permanent dentition of children, adolescents and young adults, and to explore two possibly related factors, namely application frequency and the time between evaluation and the last application. The literature search identified 14 publications of randomized controlled trials or controlled clinical trials where the effect of CHX varnish was compared with placebo controls or controls that received no preventive treatment. To obtain uniform outcome effects, the prevented fraction and 95% confidence intervals of caries increment were calculated. Owing to insufficient data presentation, only eight publications were included. Another two publications were included after receiving additional data from the authors. This systematic review did not result in a meta‐analysis as an overall prevented fraction could not be computed because of the large variation of outcome results. The variation could not be explained by the time between evaluation and last application but might be explained by application frequency. It is tentatively concluded that CHX varnish has a moderate caries‐inhibiting effect when applied every 3–4 months. However, this effect seems to have diminished by around 2 yr after the last application. There is no evidence for a caries‐inhibiting effect of CHX varnish with longer intervals between applications.
Abstract – In 1995, a dental survey, similar to one carried out in 1983, was performed among persons aged 25–54 in the city of 's‐Hertogenbosch, the Netherlands. Objective: To describe trends in adults periodontal health between 1983 and 1995. Methods: The participants were interviewed at home and clinically examined in a dental van. Results: Average scores for plaque, calculus, bleeding after probing and number of buccal root surfaces exposed to the oral cavity were lower in 1995 than in 1983. There was no significant change in the percentage of teeth with pocket depth of 3.5 mm or more between 1983 and 1995. No difference was found between frequency of toothbrushing in 1983 and 1995. Conclusion: The results suggest that the periodontal health of Dutch adults aged 25–54 years has improved since 1983.
