Frequency
(%)
Diagnosis
Symptomatic apical periodontitis with periostitits 90.4
Cellulitis, spreading infection 55.1
Acute apical abscess with sign of systemic infection 54
Symptomatic apical periodontitis 16.7
Acute apical abscess without systemic involvement 8.1
Symptomatic pulpitis 0.5
Clinical finding
Osteomyelitis 90.9
Elevated body temperature 88.9
Localized fluctuant swelling 56.6
Lymphadenopathy 51.5
Repeated exudation after root canal treatment 46
Localized fluctuant swelling (in absence of systemic infection) 6.5
Pain to percussion and biting 5.6
Non vital teeth 3
Periapical radiolucency 2
Widening of periodontal space 1