Table 3 Cost calculation based on the German Private Dental Fee Catalogue, for simulated initial treatment and re-treatment of lingual or labial cavitations and WSL, separately for enamel defects following labial or lingual MB treatment, complete rehabilitation of all enamel damages or cavitations only, survival rates of 15 or 31 years, and dental fee increment factors (GOZ) 2.3 or 3.5. All costs are given in Eur

Enamel defect interventions:

1, Fluoridation of WSL;

2, single surface restoration of WSL;

3, single surface restoration of cavitation

1 + 3

2 + 3

1 + 3

2 + 3

1 + 3

2 + 3

1 + 3

2 + 3

median time until composite restoration repair (mo)

180

180

180

180

372

372

372

372

maximum number of composite re-treatments per tooth

5

5

5

5

5

5

5

5

Dental fee increment factors (GOZ, 2.3 or 3.5)

2.3

2.3

3.5

3.5

2.3

2.3

3.5

3.5

Treatment costs for one post-orthodontic WSL

6.47

84.99

9.84

129.34

6.47

84.99

9.84

129.34

Treatment costs for one post-orthodontic cavitation

84.99

84.99

129.34

129.34

84.99

84.99

129.34

129.34

Re-treatment (follow-up) costs for one post-orthodontic WSL, per cycle

0

84.99

0

129.34

0

84.99

0

129.34

Re-treatment (follow-up) costs for one post-orthodontic cavitation, per cycle

84.99

84.99

129.34

129.34

84.99

84.99

129.34

129.34

Number of patients with costs (at least one WSL and/or cavitation) [costs.pop1]

307839

736211

306613

736988

307930

736155

306626

736421

Number of patients with costs for caries (at least one cavitation, patients could have WSL in addtion) [costs.pop2]

30491

38116

30550

38349

30726

37922

30556

38519

Percentage of costs.pop1 subgroup of all simulated patients (costs.pop1/nsim)

0.308

0.736

0.307

0.737

0.308

0.736

0.307

0.736

Percentage of costs.pop2 subgroup of all simulated patients (costs.pop2/nsim)

0.031

0.038

0.031

0.038

0.031

0.038

0.031

0.039

mean number of WSLs, per patient

0.669

4.023

0.671

4.029

0.671

4.026

0.669

4.03

Number of patients with at least one WSL

286817

726844

285463

727577

286775

726942

285470

726989

mean number of cavitations, per patient

0.0316

0.0399

0.0316

0.0402

0.0319

0.0397

0.0317

0.0403

Number of patients with at least one cavitation

30491

38116

30550

38349

30726

37922

30556

38519

mean initial WSL Tx costs following de-bracketing, per patient

4.33

341.91

6.60

521.05

4.34

342.14

6.58

521.23

mean initial cavitation Tx costs following de-bracketing, per patient

2.68

3.39

4.09

5.19

2.71

3.37

4.10

5.21

mean WSL re-treatment (follow-up) costs, per patient

0.00

775.21

0.00

1180.95

0.00

399.45

0.00

606.74

mean cavitation re-treatment (follow-up) costs, per patient

6.06

7.67

9.25

11.72

3.16

3.92

4.79

6.02

mean total WSL costs (initial Tx + Re-Tx (follow-up) costs)

4.33

1117.12

6.60

1702.00

4.34

741.59

6.58

1127.98

mean total cavitation costs (initial Tx + Re-Tx (follow-up) costs)

8.74

11.06

13.34

16.91

5.86

7.30

8.90

11.23

mean total (WSL + cavitation initial Tx + Re-Tx) costs, for all subjects including non-affected patients, per patient

13.07

1128.17

19.94

1718.91

10.21

748.89

15.48

1139.21

mean initial WSL Tx costs following de-bracketing, per patient, for patients with at least 1 WSL and/or cavitation

14.06

464.41

21.52

707.00

14.10

464.76

21.46

707.79

mean initial cavitation Tx costs following de-bracketing, per patient for patients with at least 1 WSL and/or cavitation

8.72

4.60

13.35

7.05

8.80

4.58

13.38

7.07

mean WSL Re-Tx (follow-up) costs following de-bracketing, per patient, for patients with at least 1 WSL and/or cavitation

0.00

1052.98

0.00

1602.40

0.00

542.62

0.00

823.91

mean cavitation Re-Tx (follow-up) costs following de-bracketing, per patient, for patients with at least 1 WSL and/or cavitation

19.69

10.41

30.16

15.90

10.25

5.33

15.63

8.18

mean total WSL (Tx + Re-Tx) costs following de-bracketing, per patient, for patients with at least one WSL and/or cavitation

14.06

1517.39

21.52

2309.40

14.10

1007.38

21.46

1531.70

mean total cavitation (Tx + Re-Tx) costs following de-bracketing, per patient, for patients with at least 1 WSL and/or cavitation

28.40

15.02

43.51

22.95

19.04

9.91

29.01

15.25

mean total (WSL + cavitation initial Tx + Re-Tx) costs, per patient, restricted to patients with at least 1 WSL and/or cavitation

42.47

1532.41

65.03

2332.35

33.14

1017.30

50.47

1546.96

mean initial WSL Tx costs following de-bracketing, per patient, for patients with at least 1 cavitation

4.99

388.27

7.48

590.45

4.99

391.17

7.55

590.17

mean initial cavitation Tx costs following de-bracketing, per patient, for patients with at least 1cavitation

87.99

88.88

133.97

135.43

88.15

88.95

134.24

135.23

mean WSL Re-Tx (follow-up) costs following de-bracketing, per patient, for patients with at least one cavitation

0.00

875.79

0.00

1329.83

0.00

459.85

0.00

689.06

mean cavitation Re-Tx (follow-up) costs following de-bracketing, per patient, for patients with at least 1 cavitation

198.78

201.17

302.75

305.63

102.69

103.49

156.89

156.38

mean total WSL (Tx + Re-Tx) costs following de-bracketing, per patient, for patients with at least 1 cavitation

4.99

1264.06

7.48

1920.28

4.99

851.02

7.55

1279.23

mean total cavitation (Tx + Re-Tx) costs following de-bracketing, per patient, for patients with at least 1 cavitation

286.77

290.04

436.72

441.07

190.84

192.44

291.13

291.61

mean total (WSL + cavitation initial Tx + Re-Tx) costs, per patient, restricted to patients with at least 1 cavitation

291.75

1554.11

444.20

2361.34

195.83

1043.46

298.68

1570.84