Table 5 Random intercept models adjusted for fillings, patients, and dentists for all fillings (only within the manufacturer’s indications) without 0 year: excluding observations in the first half year (total = 1141 observations)

P value for treatment

0.027

0.036

0.028

0.033

0.038

0.069

0.097

0.166

P value for treatment * time

0.550

0.667

0.613

0.628

0.653

0.515

0.595

0.579

Joint P value for treatment and treatment * time

<0.001

0.021

0.027

0.033

0.037

0.112

0.144

0.284

Fixed part: odds ratios

Material Equia (reference: GP fast)

0.43 (0.21–0.91)

0.20 (0.04–0.90)

0.18 (0.04–0.83)

0.19 (0.04–0.87)

0.20 (0.04–0.91)

0.25 (0.06–1.11)

0.29 (0.07–1.25)

0.36 (0.09–1.52)

Material GP fast: time effect

 Reference: 1 year

1

1

1

1

1

1

1

1

 2 years

1.37 (1.14–1.64)

1.86 (1.31–2.65)

1.85 (1.30–2.62)

1.86 (1.31–2.64)

1.86 (1.31–2.64)

1.85 (1.31–2.63)

1.86 (1.31–2.64)

1.86 (1.31–2.63)

 3 years

1.86 (1.30–2.68)

3.46 (1.71–7.03)

3.41 (1.69–6.88)

3.45 (1.71–6.96)

3.44 (1.70–6.95)

3.44 (1.71–6.93)

3.45 (1.71–6.95)

3.44 (1.71–6.92)

 4 years

2.55 (1.47–4.39)

6.45 (2.23–18.6)

6.30 (2.20–18.1)

6.40 (2.23–18.4)

6.38 (2.22–18.3)

6.38 (2.23–18.2)

6.40 (2.24–18.3)

6.39 (2.24–18.2)

Material Equia: time effect

 Reference: 1 year

1

1

1

1

1

1

1

1

 2 years

1.49 (1.20–1.85)

2.08 (1.41–3.06)

2.10 (1.43–3.11)

2.10 (1.43–3.10)

2.08 (1.42–3.07)

2.19 (1.49–3.24)

2.13 (1.45–3.13)

2.14 (1.46–3.13)

 3 years

2.22 (1.44–3.42)

4.32 (1.99–9.38)

4.43 (2.03–9.66)

4.43 (2.03–9.64)

4.34 (2.00–9.41)

4.82 (2.21–10.5)

4.53 (2.10–9.81)

4.57 (2.12–9.83)

 4 years

3.30 (1.72–6.31)

8.99 (2.81–28.7)

9.32 (2.90–30.0)

9.31 (2.90–29.9)

9.04 (2.83–28.8)

10.6 (3.28–34.0)

9.65 (3.03–30.7)

9.76 (3.09–30.8)

Upper jaw (ref: lower jaw)

---

---

---

---

1.01 (0.36–2.85)

---

0.82 (0.31–2.18)

0.74 (0.29–1.89)

Tooth type (reference: 4)

 5

---

---

---

---

3.70 (0.83–16.5)

---

5.04 (1.24–20.4)

4.53 (1.17–17.5)

 6

---

---

---

---

2.35 (0.50–10.9)

---

5.73 (1.30–25.2)

4.55 (1.09–19.1)

 7

---

---

---

---

1.94 (0.42–8.98)

---

14.6 (2.91–72.9)

11.1 (2.36–52.0)

 8

---

---

---

---

1.27 (0.04–38.6)

---

36.5 (1.34–996)

38.0 (1.58–913)

Class (reference: class I)

 Class II

---

---

---

---

---

42.1 (11.1–161)

90.1 (19.8–410)

78.4 (17.7–348)

Random part:

Filling: intercept

---

4.25 (2.91–5.59)

2.40 (1.44–3.36)

2.42 (1.45–3.40)

2.42 (1.44–3.41)

2.42 (1.45–3.39)

2.36 (1.39–3.32)

2.34 (1.39–3.29)

Patient: intercept

---

---

3.08 (2.03–4.13)

3.05 (2.00–4.10)

2.96 (1.92–4.01)

2.50 (1.50–3.49)

2.32 (1.34–3.31)

1.44 (0.12–2.75)

Dentist: intercept

---

---

---

---

---

---

---

1.76 (0.98–2.55)