Number %
Distal caries Presence Absent 618 96.6
Present 22 3.4
Severity
(n = 22) 		Slight 9 40.9
Moderate 8 36.4
Severe 5 22.7
External root
resorption 		Presence Absent 396 61.9
Present 244 38.1
Localization
(n = 244) 		Cervical 49 20.1
Middle 82 33.6
Apical 113 46.3
Severity
(n = 244) 		Slight 90 36.9
Moderate 42 17.2
Severe 112 45.9
Marginal bone loss Presence Absent 186 29.1
Present 454 70.9
Severity
(n = 454) 		Slight 67 14.8
Moderate 129 28.4
Severe 258 56.8
Pathological
follicular space 		Presence Absent 558 87.2
Present 82 12.8