Table 3 Cox proportional hazards regressions estimating silver diamine fluoride failure among advantage dental patients 64 and under

Type of application (reference: SDF alone)

 SDF + sedative filling survival %

2.48***

2–3.06

 SDF + restoration survival %

0.60

0.33–1.08

# of SDF applications (reference: one)

 2

0.93

0.78–1.11

 3

0.98

0.77–1.24

Caries risk (reference: low)

 No assessment

1.36

0.95–1.93

 Moderate

1.34

0.92–1.94

 High

1.42***

1.03–1.97

Age (reference: 6–9)

 1–5

1.33**

1.07–1.65

 10–14

0.77

0.57–1.02

 15–20

0.94

0.62–1.43

 21–30

1.37

0.93–2.03

 31–40

1.29

0.82–2.05

 41–50

1.66*

1.09–2.55

 51–64

1.79***

1.23–2.62

Tooth type—primary teeth (reference: lower molar)

 Lower incisor

0.66

0.23–1.91

 Lower cuspid

0.40*

0.18–0.89

 Upper incisor

0.61**

0.43–0.87

 Upper cuspid

0.51**

0.33–0.78

 Upper molar

0.86*

0.75–0.98

Tooth type—permanent teeth (reference: lower molar)

 Lower incisor

1.22

0.8–1.86

 Lower cuspid

1.17

0.72–1.88

 Lower bicuspid

0.77*

0.6–0.98

 Upper incisor

2.65***

1.89–3.72

 Upper cuspid

1.35

0.89–2.04

 Upper bicuspid

1.17

0.9–1.52

 Upper molar

0.86

0.7–1.06

Number of teeth

7787

Number of patients

1957

Likelihood ratio chi-square

154.48***

22 df