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. 2021 Jun 25;15(4):694–701. doi: 10.1055/s-0041-1728842

Table 6. Prognosis of cracked teeth according to the presence of an apical lesion at 3 and 6 mo after treatment.

3 mo 6 mo
Year Apical lesion Total N Free Persisted Ext p -Value Total N Free Persisted Ext p -Value
Note: p -Values were computed to compare sample ratio difference between free and persisted according to apical lesion using the binomial test. A p -value <0.05 was considered to indicate statistical significance.
2009 O 6 5 (83.3) 1 (16.7) 0 (0) 0.219 4 4 (100) 0 (0) 0 (0) 0.125
X 39 32 (82.1) 7 (17.9) 0 (0) <0.001 25 21 (84) 4 (16) 0 (0) <0.001
Total 45 37 (82.2) 8 (17.8) 0 (0) <0.001 29 25 (86.2) 4 (13.8) 0 (0) <0.001
2019 O 25 19 (76) 6 (24) 0 (0) 0.015 11 9 (81.8) 2 (18.2) 0 (0) 0.065
X 155 142 (91.6) 13 (8.4) 0 (0) <0.001 39 34 (87.2) 5 (12.8) 0 (0) <0.001
Total 180 161 (89.4) 19 (10.6) 0 (0) <0.001 50 43 (86) 7 (14) 0 (0) <0.001
2009+2019 O 31 24 (77.4) 7 (22.6) 0 (0) 0.003 15 13 (86.7) 2 (13.3) 0 (0) 0.007
X 194 174 (89.7) 20 (10.3) 0 (0) <0.001 64 55 (85.9) 9 (14.1) 0 (0) <0.001
Total 225 198 (88) 27 (12) 0 (0) <0.001 79 68 (86.1) 11 (13.9) 0 (0) <0.001