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Table 5.4 continued<br />

Author<br />

Year,<br />

reference<br />

Country<br />

Sample, n<br />

Age (years)<br />

at start<br />

Teeth<br />

tested,<br />

Caries<br />

prevalence<br />

at<br />

start<br />

Obs<br />

time<br />

(yrs)<br />

Drop-out<br />

Explained<br />

Diagnostic<br />

criteria<br />

Examiner<br />

(n)<br />

Reliability<br />

Mattiasson-<br />

Robertson<br />

et al<br />

1993 [75]<br />

Sweden<br />

Representative<br />

schools in two<br />

areas with different<br />

F<br />

n: 655<br />

Age: 12<br />

Permanent<br />

Mean<br />

DMFS: 1.5<br />

(low F), 2.2<br />

(high F)<br />

Increment:<br />

New DMFS<br />

high F (low<br />

F): 1.4 (1.2)<br />

New<br />

approximal<br />

enamel<br />

lesions:<br />

3.7 (2.5)<br />

3 6 Koch<br />

1967<br />

BW<br />

Several<br />

examiners<br />

(ordinary<br />

dentist)<br />

No<br />

Mattila et al<br />

2001 [76]<br />

Finland<br />

Representative<br />

of target<br />

population<br />

n: 1 070<br />

Age: 7<br />

Permanent<br />

59% cariesfree<br />

at age<br />

7 mean<br />

DFT not<br />

stated<br />

3 35–46 Not<br />

stated<br />

No BW<br />

(fibre<br />

optics)<br />

Several<br />

examiners<br />

(ordinary<br />

dentist)<br />

Increment<br />

Mean new<br />

DMFT: 2.3<br />

ter Pelkwijk<br />

et al<br />

1990 [33]<br />

Netherlands<br />

Children from<br />

2 towns. Inclusion<br />

unclear,<br />

representative<br />

of target population<br />

n: 286<br />

Age: 7<br />

Permanent<br />

72% cariesfree<br />

mean<br />

dft or<br />

DMFT not<br />

stated<br />

Increment<br />

caries-free<br />

age 9: 41%,<br />

caries-free<br />

age 12:<br />

36%<br />

2 and<br />

4<br />

Not given<br />

Backer<br />

Dirks<br />

1957<br />

BW<br />

Senior<br />

examiners<br />

n=?<br />

Experienced,<br />

calibrated<br />

No<br />

260<br />

Karies – diagnostik, riskbedömning och icke-invasiv behandling

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