Table 2 The effects of treatment visit and other variables on treatment success

Treatment visit

Single

104 (89 %)

13 (11 %)

0.764

Multiple

90 (87 %)

13 (13 %)

Gender

Male

74 (87 %)

11 (13 %)

0.980

Female

120 (89 %)

15 (11 %)

Use of loupe

Yes

99 (88 %)

13 (12 %)

0.470

No

95 (88 %)

13 (12 %)

Arch

Maxillary

130 (93 %)

10 (7 %)

0.015*

0.009*

Mandibular

64 (80 %)

16 (20 %)

Tooth position

Anterior

46 (94 %)

3 (6 %)

0.855

Posterior

148 (87 %)

23 (13 %)

Number of canal

Single

82 (92 %)

7 (8 %)

0.159

Multiple

112 (85 %)

19 (15 %)

Apical periodontitis

Yes

107 (83 %)

22 (17 %)

0.021*

0.010*

No

87 (96 %)

4 (4 %)

C-shaped canal

Yes

4 (100 %)

0 (0 %)

0.999

No

190 (88 %)

26 (12 %)

Periodontal pocket

Yes

26 (81 %)

6 (19 %)

0.247

No

168 (89 %)

20 (11 %)

Tooth vitality

Vital

35 (95 %)

2 (5 %)

0.862

Non-vital

159 (87 %)

24 (13 %)

Tooth mobility

Yes

7 (88 %)

1 (13 %)

0.365

No

187 (88 %)

25 (12 %)

Opposing teeth

Missing

6 (100 %)

0 (0 %)

0.804

Sound

136 (89 %)

17 (11 %)

Filled

36 (84 %)

7 (16 %)

Crown

16 (89 %)

2 (11 %)

Tender to percussion

Yes

95 (87 %)

14 (13 %)

0.128

No

99 (89 %)

12 (11 %)

Abscess or sinus tract

Yes

35 (83 %)

7 (17 %)

0.655

No

159 (89 %)

19 (11 %)

Preoperative pain

Yes

74 (93 %)

6 (8 %)

0.086

No

120 (86 %)

20 (14 %)

Length of root canal filling

Adequate

162 (90 %)

19 (10 %)

0.242

Overfilling

28 (85 %)

5 (15 %)

Underfilling

4 (67 %)

2 (33 %)

Density of root canal filling

Adequate

182 (90 %)

21 (10 %)

0.039*

Inadequate

12 (71 %)

5 (29 %)

Postoperative restoration

Intra-coronal

62 (89 %)

8 (11 %)

0.927

Extra-coronal

132 (88 %)

18 (12 %)

Postoperative pain within 1 week

Yes

34 (92 %)

3 (8 %)

0.943

No

160 (87 %)

23 (13 %)

Age [Mean (SD)]

46.07 (14.23)

48.65 (12.75)

0.535

Preoperative pain intensity [Mean (SD)]

1.64 (2.64)

1.15 (2.46)

0.653