ABSTRACT
OBJECTIVE: To describe and classify the presentations of the infra-orbital canal/groove (IOC/G) complex and anterior superior dental plexus (ASDP) on panoramic radiographs. METHODS: The frequency of occurrence and variations in appearance of the IOC/G were determined on 246 random panoramic radiographs. A classification system consisting of Types I, II and III was developed to describe the radiographic patterns of the IOC/G. RESULTS: Two hundred radiographs (81.3%) demonstrated evidence of the IOG/C. The most frequent appearance of the IOC was Type III (44.75%) closely followed by Type I (42%) and Type II (13.25%), with only minor differences in prevalence between right and left sides. Sixty one percent were bilateral. Radiologic evidence of the ASDP was noted in 29% of radiographs demonstrating an IOG/C with 12% of cases being bilateral. Three distinct radiographic patterns of the anterior superior dental plexus (ASDP) were also observed. CONCLUSION: A classification of the appearance of the IOC/G and ASDP on panoramic radiographs has been presented.
Subject(s)
Maxilla/diagnostic imaging , Maxillary Nerve/anatomy & histology , Orbit/diagnostic imaging , Radiography, Panoramic , Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Male , Maxilla/innervation , Maxillary Nerve/diagnostic imaging , Middle Aged , Orbit/innervation , Retrospective StudiesABSTRACT
When performing a radiologic examination, it is important for the clinician to follow a diagnostic sequence. Specific viewing principles are necessary to create the proper physical environment to obtain the most information from the radiographs. The selection of radiologic examination must be based on the ALARA (As Low As Reasonably Achievable) principle, and the clinician should use a method approach to radiologic interpretation.
