Table 6 Random intercept models adjusted for fillings, patients, and dentists for all fillings (within and outside the manufacturer’s indications) with 0 year: including observations in the first half year (total = 2495 observations)

P value for treatment

0.167

0.255

0.209

0.244

0.262

0.244

0.285

0.397

P value for treatment * time

0.837

0.541

0.553

0.536

0.533

0.522

0.686

0.639

Joint P value for treatment and treatment * time

0.008

0.069

0.062

0.075

0.085

0.138

0.145

0.208

Fixed part: odds ratios

Material Equia (reference: GP fast)

0.71 (0.44–1.15)

0.58 (0.22–1.49)

0.54 (0.21–1.41)

0.57 (0.22–1.47)

0.58 (0.22–1.50)

0.58 (0.23–1.45)

0.61 (0.25–1.51)

0.68 (0.28–1.66)

Material GP fast: time effect

 Reference: 1 year

1

1

1

1

1

1

1

1

 2 years

1.98 (1.74–2.24)

3.51 (2.73–4.53)

3.58 (2.77–4.61)

3.58 (2.78–4.62)

3.56 (2.77–4.59)

3.51 (2.73–4.51)

3.51 (2.74–4.51)

3.55 (2.76–4.56)

 3 years

3.91 (3.04–5.03)

12.3 (7.44–20.5)

12.8 (7.69–21.3)

12.8 (7.72–21.4)

12.7 (7.65–21.1)

12.3 (7.48–20.3)

12.3 (7.49–20.3)

12.6 (7.62–20.8)

 4 years

7.73 (5.31–11.3)

43.4 (20.3–92.7)

45.7 (21.3–98.0)

46.0 (21.5–98.7)

45.3 (21.1–97.0)

43.3 (20.5–91.5)

43.4 (20.5–91.7)

44.7 (21.0–94.8)

Material Equia: time effect

 Reference: 1 year

1

1

1

1

1

1

1

1

 2 years

1.94 (1.69–2.23)

3.18 (2.45–4.12)

3.24 (2.49–4.22)

3.24 (2.49–4.21)

3.22 (2.48–4.18)

3.33 (2.57–4.33)

3.29 (2.54–4.27)

3.29 (2.54–4.26)

 3 years

3.76 (2.85–4.96)

10.1 (6.02–17.0)

10.5 (6.22–17.8)

10.5 (6.20–17.7)

10.4 (6.15–17.4)

11.1 (6.59–18.8)

10.8 (6.44–18.2)

10.8 (6.45–18.1)

 4 years

7.29 (4.81–11.0)

32.2 (14.8–69.9)

34.1 (15.5–74.9)

33.9 (15.4–74.4)

33.3 (15.2–72.8)

37.1 (16.9–81.3)

35.6 (16.4–77.6)

35.6 (16.4–77.3)

Upper jaw (ref: lower jaw)

---

---

---

---

0.96 (0.49–1.88)

---

0.78 (0.42–1.46)

0.75 (0.41–1.38)

Tooth type (reference: 4)

 5

---

---

---

---

3.42 (1.20–9.70)

---

3.23 (1.24–8.38)

3.11 (1.22–7.92)

 6

---

---

---

---

2.02 (0.72–5.70)

---

2.72 (1.03–7.18)

2.43 (0.93–6.32)

 7

---

---

---

---

1.40 (0.50–3.94)

---

4.06 (1.49–11.1)

3.32 (1.24–8.89)

 8

---

---

---

---

1.20 (0.16–9.06)

---

6.09 (0.84–44.2)

6.79 (0.98–47.4)

Class (reference: class I)

 II

---

---

---

---

---

22.1 (9.53–51.2)

29.5 (12.0–72.6)

25.4 (10.4–62.0)

 II MOD

---

---

---

---

---

94.3 (23.1–384)

102 (24.7–418)

95.7 (22.9–392)

Random part:

Filling: intercept

---

3.18 (2.57–3.78)

1.78 (1.19–2.36)

1.80 (1.21–2.38)

1.78 (1.19–2.38)

1.58 (0.97–2.18)

1.56 (0.96–2.17)

1.52 (0.92–2.11)

Patient: intercept

---

---

2.70 (2.07–3.33)

2.65 (2.02–3.28)

2.59 (1.97–3.22)

2.26 (1.68–2.84)

2.17 (1.59–2.75)

1.82 (1.22–2.41)

Dentist: intercept

---

---

---

---

---

---

---

1.29 (0.75–1.83)