| |
Model 1 (n = 894)
|
Model 2 (n = 894)
|
Model 3 (n = 894)
|
Model 4 (n = 801)
|
|---|
|
Variables
|
OR*, **
|
95% CI
|
Adjusted OR
|
95% CI
|
Adjusted OR
|
95% CI
|
Adjusted OR
|
95% CI
|
|---|
|
Tooth
|
|
Central incisor
|
Referent
| |
Referent
| |
Referent
| |
Referent
| |
|
Lateral incisor
|
0.66**
|
0.49–0.90
|
0.66**
|
0.48–0.90
|
0.41**
|
0.24–0.73
|
0.29**
|
0.16–0.53
|
|
Canine
|
1.49*
|
1.08–2.06
|
1.50*
|
1.08–2.08
|
11.67**
|
5.27–25.85
|
6.31**
|
2.85–13.97
|
|
Alveolar ridge
|
|
Concavity depth (CD)
|
1.47**
|
1.27–1.70
|
1.49**
|
1.29–1.72
|
1.56**
|
1.26–1.94
|
1.85**
|
1.47–2.32
|
|
Cavity angle (CA)
|
0.90**
|
0.87–0.93
|
0.89**
|
0.86–0.92
|
0.85**
|
0.80–0.90
|
0.84**
|
0.79–0.89
|
|
Deep bone thickness
|
|
dBT (0)
|
0.59**
|
0.51–0.67
|
0.58**
|
0.50–0.66
|
0.43**
|
0.34–0.55
|
0.46**
|
0.36–0.58
|
|
dBT (10)
|
0.68**
|
0.59–0.78
|
0.68**
|
0.59–0.77
|
1.03
|
0.84–1.28
|
1.03
|
0.81–1.31
|
|
Tooth-alveolar ridge
|
|
Torque (T)
|
1.10**
|
1.06–1.14
|
1.10**
|
1.07–1.14
|
1.25**
|
1.18–1.34
|
1.28**
|
1.21–1.36
|
|
CRDAP classification
|
|
CRDAP class I
|
–
|
–
|
–
|
–
|
–
|
–
|
Referent
| |
|
CRDAP class II
|
–
|
–
|
–
|
–
|
–
|
–
|
21.39**
|
3.04–150.23
|
|
CRDAP class III
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
|
CRDAP class IV
|
–
|
–
|
–
|
–
|
-
|
–
|
47.26**
|
7.00–319.22
|
- The classification of crestal and radicular dentoalveolar phenotype (CRDAP) of mandibular anterior teeth was categorized according to the thickness of dentoalveolar bone at both crestal and radicular zones [25]. A multivariable logistic regression analysis with generalized estimating equation (GEEs) method was used and which was simultaneously adjusted for categorical (i.e., gender, tooth types, and crestal and radicular dentoalveolar phenotype (CRDAP)) and continuous (i.e., age, cavity depth (CD), cavity angle (CA), torque (T), and deep bone thickness (dBT) variables. * and ** indicate statistical differences as p < 0.05, p < 0.01
- Model 1: adjusted for within factors
- Model 2: adjusted for within factors, gender and age
- Model 3: adjusted for within factors, gender, age, tooth types, CD, CA, T, dBT (0), and dBT (10)
- Model 4: adjusted for within factors, gender, age, tooth types, CD, CA, T, dBT (0), dBT (10), and CRDAP (CRDAP class III teeth were excluded due to no “perforation” teeth in this group).
- Abbreviation: OR odds ratio, 95% CI 95% confidence interval
