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Table 4 The influence of preoperative root morphology on root changes after REPs

From: Preoperative factors analysis on root development after regenerative endodontic procedures: a retrospective study

Aetiology

Root morphology

(mm)

Type I

Type II

Type III

Type IV

In total

n = 116

P

Dens evaginatus

Apical foramen size

< 2.65

31 (81.6%)

4 (10.5%)

2 (5.3%)

1 (2.6%)

38 (46.3%)

0.319

≥ 2.65

40 (90.9%)

4 (9.1%)

0 (0.0%)

0 (0.0%)

44 (53.7%)

 

Root length

< 11.50

35 (87.5%)

5 (12.5%)

0 (0.0%)

0 (0.0%)

40 (48.8%)

0.486

≥ 11.50

36 (85.7%)

3 (7.1%)

2 (4.8%)

1 (2.4%)

42 (51.2%)

 

Root thickness

< 1.41

39 (81.3%)

7 (14.6%)

1 (2.1%)

1 (2.1%)

48 (58.5%)

0.182

≥ 1.41

32 (94.1%)

1 (2.9%)

1 (2.9%)

0 (0.0%)

34 (41.5%)

 

Trauma

Apical foramen size

< 3.00

13 (52.0%)

1 (4.0%)

1 (1.0%)

10 (40.0%)

25 (73.5%)

0.001**

≥ 3.00

2 (22.2%)

0 (0.0%)

6 (66.7%)

1 (11.1%)

9(26.5%)

 

Root length

< 12.90

8(42.1%)

1 (5.3%)

4 (21.1%)

6 (31.6%)

19 (55.9%)

1.000

≥ 12.90

7 (46.7%)

0 (0.0%)

3 (20.0%)

5 (33.3%

15 (44.1%)

 

Root thickness

< 1.41

4 (40.0%)

0 (0.0%)

2 (20.0%)

4 (40.0%)

10 (29.4%)

0.921

≥ 1.41

11 (45.8%)

1 (4.2%)

5 (20.8%)

7 (63.6%)

(70.6%)

 
  1. **P < 0.01,Δ Fisher's exact test