Caries Prevalence in Norwegian Recruits 5–7 Years after Discontinuation of Supervised Fluoride Toothbrushing Programmes

Haugejorden, Ola; Rise, Jostein

doi:10.1159/000260531

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…Accordingly, some of the effect of posteruptive tooth age was mediated by baseline prevalence, a finding which sttpports DOWNER'S reasoning (6). It should also be mentioned that caries prevalence at age 13/4 was based upon total registration of tteatment t-eceived -while caries prevalence at age 20 derived from partial recording (15). This may have affected the relationship, and has probably led to an underestimation of the strength of the association.…”

Section: Resultsmentioning

confidence: 99%

“…The corresponding frgrrr-es at age 14 were > 17 DMFS (n = 50) and <17 DMFS (;( = 64), r-espectively. Mean initial DMFS for the dilTerent groups are shown in Table 1, Materiat 2 came from a study of caries prevalence in 20-year'old Norwegian recruits 5-7 years after discontintration of supervised fltroride toothbrushing programs (15), Records of treatr-nent received up to \3% years of age were available for' 90 subjects. For this subgroup caries prevalence at ages 13 fz and 20 were available, but caries prevalence was determirred in difler'ent ways at the two ages.…”

Section: Methodsmentioning

confidence: 99%

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Relationship between caries prevalence and incidence among adolescents

Rise

Haugejorden

Birkeland

1982

Comm Dent Oral Epid

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The purpose of this study was 1) to determine the strength and direction of the association between caries prevalence at 13-14 years of age and subsequent caries increments and 2) to assess the goodness of fit of a multivariate model to caries increments from age 13 1/2 to 20. Two sets of data were used. The first consisted of treatment records for 114 children from an incremental dental care program. They were divided into high and low caries prevalence groups at ages 13 and 14 and 2-and 3-year caries increments were calculated. Unstandardized regression coefficients and Pearson's r were used to determine the relationship between baseline caries prevalence and subsequent caries increments. This relationship was consistently positive in the low prevalence group, but changed to negative in the high prevalence group. This change of direction is most likely attributable to saturation with regard to caries. The second material comprised 20-year-old military recruits for 90 of whom treatment records were available from age 13 1/2. Caries prevalence at 13 1/2 years of age was by far the most important predictor of caries increment from age 13 1/2 to 20. The multivariate model provided a good fit to the empirical data (R2 = 37.4%). It was concluded that the interpretation of the results of clinical and field trials of anticaries agents may be complicated due to a saturation phenomenon if adolescent subjects with high caries prevalence of baseline are used.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Relationship between caries prevalence and incidence among adolescents

Rise

Haugejorden

Birkeland

1982

Comm Dent Oral Epid

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“…The studies available on the long-term effect of caries preventive agents or procedures are few, and have given equivocal results (1)(2)(3)(4)(5)(6)(7). However, for the assessment of the value of a preventive prograrn it is important to know whether the effect on dental caries is temporary or lasting and infon'nation on the possible long-term effeets is also needed for costeffectiveness analyses (8).…”

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confidence: 99%

Long‐term effect of xylitol chewing gum on dental caries

Isokangas¹,

Tiekso²,

Alanen³

et al. 1989

Comm Dent Oral Epid

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About 85% (n = 269) of the subjects who participated in the Ylivieska follow-up studies on the effect of xylitol chewing gum on dental caries during 1982-84 or 1982-85 were re-examined in 1987 for the analysis of possible long-term preventive effects. Further caries reduction was found 2 or 3 yr after the discontinuation of the use of xylitol. The effect was especially marked in girls; the reduction in caries increment in the post-use years was 60% for the 2-yr users, suggesting that more pronounced caries reduction was associated with the most regular use of xylitol. In teeth erupting during the first year of the use of xylitol gum the long-term preventive effect was greater than in other teeth. Several explanations are suggested: lasting effect of the microbiological changes in the mouth, bacterial colonization on newly erupted teeth by organisms other than S. mutans, and/or thorough maturation of the teeth under favorable physico-chemical circumstances. The results suggest that the value of xylitol in caries prevention depends on the timing of the treatment in relation to the development of the dentition.

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“…Reports of the post‐discontinuation effects of other preventive dental programs using fluoride varnishes, mouthwashes, and toothbrushing have been controversial. A sustained protective effect was found by some authors (22–25), although this benefit appears to diminish over the long term, after longer follow‐up times (26). However, the action mechanism of fluoride is different from that of chlorhexidine.…”

Section: Discussionmentioning

confidence: 97%