The effect of chewing gum containing xylitol on the incidence and progression of dental caries was tested in a sample of 274 children, aged eight and nine years, of low socio-economic status and high caries rate. They were divided into two experimental groups (15% and 65% xylitol chewing gum distributed three times a day at school) and one control group (without chewing gum). The three groups were exposed to the same basic preventive program. Children who chewed gum had a significantly lower net progression of decay (progressions-reversals) over a 24-month period than did the controls. Results for the two groups chewing gum were similar. Chewing xylitol gum had a beneficial effect on the caries process for all types of tooth surfaces, and especially for bucco-lingual surfaces. The two experimental groups had a DMF(S) increment of 2.24 surfaces, compared with 6.06 surfaces for the control group. For this indicator, there was no difference between the two experimental groups. Results for the plaque index were in agreement with those of the DMF(S) increment and the net progression of decay.
Department of Preventive Dentisty, Public Dental Health, Uppsala County Council, Uppsala, Sweden; Department of Cariology, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
To describe adolescents' experiences of participating in a school-based oral health intervention programme for 2 years containing education about oral health and fluoride varnish treatment at the school clinic.
Sixteen adolescents aged 13-16 were interviewed in three focus group sessions. A phenomenographic approach was used for analysis.
The results are presented as three themes and seven descriptive categories. The three themes were 'Seeing the dental hygienist', 'Treatments at the dental hygiene clinic' and 'Education about oral health in class'. The results demonstrate satisfaction with the intervention, such as accessibility, time gain and expanding knowledge. On the other hand, feelings of vulnerability in the treatment sessions were expressed. The fluoride varnish treatment was given both positive and negative reviews. The contact between the participants and the dental hygienist was important, and the opportunity to ask questions about oral health issues was emphasized.
Both positive and negative experiences of the programme were found. Adolescence is a transitional period of life, and for this reason, it is important to create a good working alliance between students and the dental hygienist in future school-based oral health interventions.
In dentistry comparative studies of diffusion of disease preventive innovations are rare and usually atheoretical. For these reasons the present study was designed 1) to determine whether or not normal distribution assumptions applied to decisions to adopt caries preventive fluoride programs in a public dental service; 2) to compare rates of adoption of two school-based and one clinic-based fluoride program, and 3) to look for evidence indicating which type of decision-making may have been involved. The programs studied were school-based fluoride brushing 4-5 times per year, fluoride mouthrinsing at least once a month, and professional topical fluoride applications at least once a year. Data were collected by postal questionnaires from public dental officers in Norway in 1972, 1977 and 1982. To determine the length of time which had elapsed from the time of innovation of the technologies to adoption, the dental literature was reviewed. The adoption curves for school-based fluoride brushing and rinsing, as well as for clinic-based topical fluoride application did not comply with the normal distribution assumption. The time lapse from innovation to adoption was in excess of 10 yr and the rates of adoption differed between programs. Decision-making would appear to have been primarily individual or collective. It was concluded that generalization beyond the innovations studied and the social and organizational setting of this particular investigation is inadmissible. Consequently, there is a need for more and larger scale comparative analytical studies to increase our understanding of diffusion and adoption of innovations in dentistry.
To analyze the regular dental care behavior and prevalence of edentulism in adult Danes, reported in sequential cross-sectional oral health surveys by the application of a marginal approach to consider the possible clustering effect of birth cohorts.
Data from four sequential cross-sectional surveys of non-institutionalized Danes conducted from 1975-2005 comprising 4330 respondents aged 15+ years in 9 birth cohorts were analyzed. The key study variables were seeking dental care on an annual basis (ADC) and edentulism. For the analysis of ADC, survey year, age, gender, socio-economic status (SES) group, denture-wearing, and school dental care (SDC) during childhood were considered. For the analysis of edentulism, only respondents aged 35+ years were included. Survey year, age, gender, SES group, ADC, and SDC during childhood were considered as the independent factors. To take into account the clustering effect of birth cohorts, marginal logistic regressions with an independent correlation structure in generalized estimating equations (GEE) were carried out, with PROC GENMOD in SAS software.
The overall proportion of people seeking ADC increased from 58.8% in 1975 to 86.7% in 2005, while for respondents aged 35 years or older, the overall prevalence of edentulism (35+ years) decreased from 36.4% in 1975 to 5.0% in 2005. Females, respondents in the higher SES group, in more recent survey years, with no denture, and receiving SDC in all grades during childhood were associated with higher probability of seeking ADC regularly (P
Cites: Community Dent Oral Epidemiol. 1976 Nov;4(6):221-61069611
Cites: J Endod. 2008 Jul;34(7):798-80318570982
Cites: Community Dent Oral Epidemiol. 1983 Feb;11(1):18-246572119
The purpose of the present study was to determine whether the caries-preventive effect of school-based programs with fluoride (F) mouthrinsing or toothbrushing was evident at the end of a post-treatment follow-up period of 11 years. Two groups of subjects examined at 14 years of age (born in 1960), who had participated in fortnightly F rinsing (n = 52) or in F brushing 4-5 times a year at school (n = 50), were re-examined radiographically and completed a questionnaire at age 25 years. A comparison group of 25-year-olds (n = 51) was also included. Analyses of variance showed that the benefits of participation in school-based F programs seem to have been lost. It appears that these caries-preventive programs have delayed rather than prevented caries and that F toothpaste and other caries-preventive efforts have been insufficient to avert a substantial caries activity during the follow-up period.
In a retrospective survey the mean number of intact proximal surfaces on the first molars of 13-year-old children was found to increase from 2.6 to 4.8 following 7 years of a preventive program with fortnightly fluoride mouthrinsings (0.2% NaF). This improvement was significant and corresponded to a reduction of the totally filled surfaces from 30.0 to 16.6. Caries on the proximal surfaces on the first molars was assessed from bite-wing radiographs. Judged from interexaminer comparisons, the number of filled surfaces was a reliable parameter of the caries prevalence in 13-year-old children. In a group of 54 children aged 13 who participated in the preventive program, the caries experience on the proximal surfaces of the first molars was significantly associated with the total DMFS.
The Saskatchewan Health Dental Plan (SHDP) is a publicly funded dental insurance program for children between the ages of five and 16 years residing in the province. In 1981, fissure sealants were added as a covered expense. Until September 1, 1987, sealants and other dental treatments covered under the SHDP were provided to schoolchildren by dental therapists in dental clinics established in elementary schools throughout the province. After September 1, 1987, the provision of dental services was transferred to private practitioners in the province. The objectives of this study were to (1) estimate the retention rates of sealants after one, two, and three years of placement; and (2) conduct a longitudinal followup of sealed and unsealed sound teeth to measure the effectiveness of sealants in reducing dental caries incidence. Relative to the first objective, a cohort of children was identified and comparisons were carried out for the periods of 1982-83, 1982-84, and 1982-85. For the last objective, a longitudinal evaluation of effectiveness was carried out only for children five to seven years of age in 1981. Saskatchewan children, who experienced higher caries prevalence than children in the United States, had the highest caries increments on occlusal surfaces of posterior teeth. About 79 percent of the sealants applied by dental therapists were retained three years after application. Sealed teeth experienced 46 percent less caries than unsealed teeth four years after the application of sealants.(ABSTRACT TRUNCATED AT 250 WORDS)