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Table 3 Univariate and adjusted Cox regression analysis for restoration survival (36-month follow-up)

From: Atraumatic restorative treatment compared to the Hall Technique for occluso-proximal carious lesions in primary molars; 36-month follow-up of a randomised control trial in a school setting

Variable

Success n (%)

Failure n (%)

Total (n)

HR univariate†

95% CI‡

p value

HR adjusted†

95% CI‡

p value

Group

       

ART (ref)

32(49.23)

33 (50.77)

65

    

Hall Technique

64 (96.97)

2 (3.03)

66

0.052

0.013–0.22

< 0.001*

0.058

0.014–0.24

< 0.001*

Operator

       

Specialist (ref)

35 (79.55)

9 (20.45)

44

    

Student 1

29 (67.44)

14 (32.56)

43

1.67

0.72–3.86

0.233

-

-

Student 2

32 (72.73)

12 (27.27)

44

1.20

0.60–2.85

0.682

-

-

Age (years)

       

5–6.9 (ref)

16 (66.67)

8 (33.33)

24

1.33

0.67–3.12

0.510

-

-

7–8.9

55 (73.33)

20 (26.67)

75

1.39

0.48–4.02

0.538

-

-

 ≥ 9

25 (78.13)

7 (21.88)

32

    

Sex

       

Male (ref)

57 (71.25)

23 (28.75)

80

    

Female

39 (76.47)

12 (23.53)

51

0.86

0.43–1.73

0.673

-

-

dmft/DMFT

       

1—2

29 (61.70)

18 (38.30)

47

    

3—4

34 (75.56)

11 (24.44)

45

0.53

0.25–1.13

0.102

0.63

0.29–1.36

0.242

 ≥ 5

32 (84.21)

6 (15.79)

38

0.33

0.13–0.84

0.019*

0.44

0.17–1.16

0.097

Jaw

       

Upper (ref)

57 (72.15)c

22 (27.85)

79

    

Lower

39 (75.00)

13 (25.00)

52

0.86

0.43–1.71

0.668

-

-

Side

       

Right (ref)

48 (68.57)

22 (31.43)

70

    

Left

48 (78.69)

13 (21.31)

61

0.62

0.31–1.23

0.170

0.54

0.26–1.10

0.089

Tooth

       

1st primary molar (ref)

62 (75.61)

20 (24.39)

82

    

2nd primary molar

34 (69.39)

15 (30.61)

49

1.19

0.610–2.334

0.605

-

-

Cavity volume**

       

0–10 mm3 (ref)

46 (73.02)

17 (26.98)

63

    

11–20 mm3

31 (75.61)

10 (24.39)

41

0.94

0.43–2.06

0.882

-

-

21–30 mm3

16 (76.19)

5 (23.81)

21

0.98

0.36–2.65

0.962

-

-

> 30mm3

3 (60.00)

2 (40.00)

5

1.39

0.32–6.06

0.657

-

-

Moisture control (no saliva or gingival bleeding contamination)

       

Maintained (ref)

95 (74.22)

33 (25.78)

128

    

Not maintained

1 (33.33)

2 (66.67)

3

3.161

0.75–13.36

0.118

2.24

0.48–10.51

0.305

Total

96 (73.28)

35 (26.72)

131

    
  1. †HR Hazard ratio, ‡CI confidence interval
  2. *Indicates statistically significance differences (p < 0.05)
  3. **One child in the ART group did not have the cavity dimensions measured and recorded by the operator
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BMC Oral Health

ISSN: 1472-6831

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