Skip to main content

Advertisement

Table 1 Frequency of incidental of findings among the 6 designated anatomic regions

From: The frequency and nature of incidental findings in large-field cone beam computed tomography scans of an orthodontic sample

Incidental finding category Frequency (n) Percentage of IFs
Cervical vertebrae 11 1.3
 Cervical vertebrae fusion 5 0.59
 Cervical vertebral flattening 1 0.12
 Cervical osteoarthritis 1 0.12
 Mediolateral rotation (to L) of C2-C3 in relation to C1 1 0.12
 Bony ossicle in C1-C2 region 1 0.12
 Posterior ponticle of C1 2 0.24
Dentoalveolar 124 14.7
 Supernumerary 6 0.71
 Hypodontia (excluding third molars) 37 4.39
 Microdontia 4 0.48
 Impactions 28 3.33
 Enamel pearl 1 0.12
 Gemination 1 0.12
 Retained primary tooth/fragment 6 0.71
 Dilaceration 1 0.12
 Severe root shortening (localized) 1 0.12
 Ectopic position 2 0.24
 Idiopathic osteosclerosis (DBI) 16 1.90
 Odontogenic cyst 1 0.12
 Simple bone cyst 2 0.24
 Buccal bifurcation cyst 1 0.12
 Torus mandibularis 1 0.12
 Periapical cemento-ossesous dysplasia 2 0.24
 External root resorption 5 0.59
 Periapical rarefying osteitis 8 0.95
 Periapical sclerosing osteitis 1 0.12
Naso-oropharyngeal airway 356 42.3
 Choanal-retrochoanal polyp 1 0.12
 Meatal obliteration 1 0.12
 Adenoid hypertrophy 154 18.3
 Lingual tonsil hypertrophy 55 6.53
 Palatine tonsil hypertrophy 8 0.95
 Concha bullosa 30 3.56
 Nasal mucosal thickening; rhinitis 25 2.97
 Nasal septal deviation 45 5.34
 Nasal septal deviation (with bone spur) 22 2.61
 Turbinate hypertrophy 5 0.59
 Nasal polyps 1 0.12
 Irregular soft tissue border of naso-oropharynx 2 0.24
 Dystrophic calcification of tonsils 5 0.59
 Concha enlargement 1 0.12
 Opacification of the middle and superior nasal meatuses 1 0.12
Paranasal sinuses 260 30.9
 Localized inflammatory conditions (mucositis-sinusitis) 152 18.1
 Pansinusitis 11 1.31
 Ostia blockage 11 1.31
 Retention pseudocyst 58 6.89
 Sinus hypoplasia 14 1.66
 Sinus pnuematization 11 1.31
 Sinus aplasia 1 0.12
 Accessory ostia 1 0.12
 Antrolith 1 0.12
Surrounding soft/hard tissues 34 4.0
 Osteoma 1 0.12
 Fibrous dysplasia 5 0.59
 Jugular bulb pseudolesion 4 0.48
 Pnuematization of mastoid air cells 12 1.43
 Enlarged sella turcica 3 0.36
 Soft tissue polyp 1 0.12
 Ventriculoperitoneal shunt 1 0.12
 Pineal gland calcification 1 0.12
 Osteoma cutis 1 0.12
 Calcified stylohyoid ligament 2 0.24
 Dystrophic calcification of lymph node 1 0.12
 Enlarged incisive (naso-palatine) canal 1 0.12
 Depression/notch along the anterior surface of clivus 1 0.12
Temporomandibular joint 54 6.4
 Condylar hypoplasia 16 1.90
 Physiologic remodeling (flat margins, subchondral sclerosis) 19 2.26
 Degenerative changes (osteophytes, erosions) 18 2.14
 Bifid condyle 1 0.12