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Table 4 Multiple logistic regression analysis of variables contributing to labial bone perforation during virtual implant placement

From: Risk assessment of labial bone perforation in the anterior mandibular region: a virtual immediate implant placement study

 

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

  1. 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
  2. Model 1: adjusted for within factors
  3. Model 2: adjusted for within factors, gender and age
  4. Model 3: adjusted for within factors, gender, age, tooth types, CD, CA, T, dBT (0), and dBT (10)
  5. 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).
  6. Abbreviation: OR odds ratio, 95% CI 95% confidence interval