Table 4 Demographic and clinical data evaluated in the study considering the groups

Age (mean ± standard deviation)

40.6 ± 18.29^a

38.48 ± 16.49^a

41.37 ± 15.30^a

41.10 ± 15.4^a

40.39 ± 16.35^a

0.76

  < 30 years-old (n. / % considering the age / % considering the group)

22 / 27.8% / 36.7%^a

20 / 25.3% / 33.3%^a

16 / 20.3% / 26.7%^a

21 / 26.6% / 35%^a

79 / 100% / 32.9%^a

  ≥ 30 and ≤ 50 years-old (n. / % considering the age / % considering the group)

22 / 25% / 36.7%^a

22 / 25% / 36.7%^a

28 / 31.8% / 46.7%^a

16 / 18.2% / 26.7%^a

88 / 100% / 36.7%^a

  ≥ 50 years-old (n. / % considering the age / % considering the group)

16 / 21.9% / 26.7%^a

18 / 24.7% / 30%^a

16 / 21.9% / 26.7%^a

23 / 31.5% / 38.3%^a

73 / 100% / 30.4%^a

 Total

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

240 / 100% / 100%

Gender

 Male (n. / % considering the gender / % considering the group)

27 / 26.7% / 45%^a

28 / 27.7% / 46.7%^a

22 / 21.8% / 36.7%^a

24 / 23.8% / 40%^a

101 / 100% / 42.1%^a

0.66

 Female (n. / % considering the gender / % considering the group)

33 / 23.7% / 55%^a

32 / 23% / 53.3%^a

38 / 27.3% / 63.3%^a

36 / 25.9% / 60%^a

139 / 100% / 57.9%^a

 Total

60 / 25% / 100%

60 / 25% / 100%^a

60 / 25% / 100%

60 / 25% / 100%

240 / 100% / 100%

Teeth

 Lower canine (n. / % considering the tooth / % considering the group)

1 / 14.3% / 1.7%ª

0 / 0% / 0%ª

2 / 28.6% / 3.3%ª

4 / 57.1% / 6.7%ª

7 / 100% / 2.9%

 < 0.00

 Upper canine (n. / % considering the tooth / % considering the group)

5 / 45.5% / 8.3%ª

3 / 27.3% / 5%ª

2 / 18.2% / 3.3%ª

1 / 9.1% / 1.7%ª

11 / 100% / 4.6%

 Lower central incisor (n. / % considering the tooth / % considering the group)

2 / 25% / 3.3%ª

4 / 50% / 6.7%ª

0 / 0% / 0%ª

2 / 25% / 3.3%ª

8 / 100% / 3.3%

 Upper central incisor (n. / % considering the tooth / % considering the group)

6 / 35.3% / 10%ª

7 / 41.2% / 11.7%ª

1 / 5.9% / 1.7%ª

3 / 17.6% / 5%ª

17 / 100% / 7.1%

 Lower lateral incisor (n. / % considering the tooth / % considering the group)

1 / 12.5% / 1.7%ª

1 / 12.5% / 1.7%ª

4 / 50% / 6.7%ª

2 / 25% / 3.3%ª

8 / 100% / 3.3%

 Upper lateral incisor (n. / % considering the tooth / % considering the group)

6 / 66.7% / 10%ª

1 / 11.1% / 1.7%ª

1 / 11.1% / 1.7%ª

1 / 11.1% / 1.7%ª

9 / 100% / 3.8%

Mandibular first molar (n. / % considering the tooth / % considering the group)

7 / 14.9% / 11.7%ª

8 / 17% / 13.3%ª

27 / 57.4% / 45%^b

5 / 10.6% / 8.3%ª

47 / 100% / 19.6%

 Maxillary first molar (n. / % considering the tooth / % considering the group)

11 / 40.7% / 18.3%ª

5 / 18.5% / 8.3%ª

5 / 18.5% / 8.3%ª

6 / 22.2% / 10%ª

27 / 100% / 11.3%

 Mandibular first premolar (n. / % considering the tooth / % considering the group)

2 / 12.5% / 3.3%ª

2 / 12.5% / 3.3%ª

2 / 12.5% / 3.3%ª

10 / 62.5% / 16.7%ª

16 / 100% / 6.7%

 Maxillary first premolar (n. / % considering the tooth / % considering the group)

1 / 5.9% / 1.7%ª

6 / 35.3% / 10.0%ª

7 / 41.2% / 11.7%ª

3 / 17.6% / 5.0%ª

17 / 100% / 7.1%

 Lower second molar (n. / % considering the tooth / % considering the group)

6 / 42.9% / 10%ª

1 / 7.1% / 1.7%ª

4 / 28.6% / 6.7%ª

3 / 21.4% / 5%ª

14 / 100% / 5.8%

 Maxillary second molar (n. / % considering the tooth / % considering the group)

4 / 30.8% / 6.7%ª

4 / 30.8% / 6.7%ª

1 / 7.7% / 1.7%ª

4 / 30.8% / 6.7%ª

13 / 100% / 5.4%

Lower second premolar (n. / % considering the tooth / % considering the group)

5 / 19.2% / 8.3%^a.b

7 / 26.9% / 11.7%^a.b

1 / 3.8% / 1.7%^b

13 / 50% / 21.7%^a

26 / 100% / 10.8%

 Maxillary second premolar (n. / % considering the tooth / % considering the group)

3 / 15% / 5%^a

11 / 55% / 18.3%^a

3 / 15% / 5%^a

3 / 15% / 5%^a

20 / 100% / 8.3%

 Total

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

240 / 100% / 100%

Periradicular status

 AAP with apical radiolucent areas  (n. / % of this periradicular status considering each tooth / % of this periradicular status considering the group

44 / 35.8% / 73.3%ª

12 / 9.8% / 20%^b

40 / 32.5% / 66.7%^a.c

27 / 22% / 45%^c

123 / 100% / 51.3%

 < 0.00

 AAP with normal periradicular tissues (without apical radiolucent areas)  (n. / % of this periradicular status considering each tooth / % of this periradicular status considering the group

16 / 13.7% / 26.7%ª

48 / 41% / 80%^b

20 / 17.1% / 33.3%^a.c

33 / 28.2% / 55.0%^c

117 / 100% / 48.8%

 Total

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

240 / 100% / 100%

Overfilling/sealer extrusion

 Yes (n. / % of overfilling/sealer extrusion considering all the teeth / % of overfilling/sealer extrusion considering the group)

3 / 4.5% / 5%^a

24 / 35.8% / 40%^b

14 / 20.9% / 23.3%^b

26 / 38.8% / 43.3%^b

67 / 100% / 27.9%

 < 0.00

 No (n. / % of overfilling/sealer extrusion considering all the teeth / % of overfilling/sealer extrusion considering the group)

57 / 32.9% / 95%ª

36 / 20.8% / 60%^b

46 / 26.6% / 76.7%^b

34 / 19.7% / 56.7%^b

173 / 100% / 72.1%

 Total

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

60 / 25% / 100%

240 / 100% / 100%