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6961964 
Journal Article 
[Pneumatization of the zygomatic arch on pantomography] 
Hofmann, T; Friedrich, RE; Wedl, JS; Schmelzle, R; , 
2001 
German 
11432333 
The pneumatized spaces of the zygomatic arch (zygomatic air cell defect) are a clinically asymptomatic variation of the temporal bone. The empty spaces of the articular eminence and temporal bone of the zygomatic arch are depicted on radiographs as a sharply demarcated osteolytic lesion of round or oval shape. The aim of this study was to determine the prevalence and characteristics of the ZACD in our outpatients.