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Maxillectomy defect browns classification
1. Table
ClassificationofMaxillary Defectsby Brown et ala
Classor Letter Defect
Vertical Component
Class
1 Maxillectomynotcausinganoronasal fistula
2 Not involvingthe orbit
3 Involvingthe orbital adnexae withorbital retention
4 Withorbital enucleationorexenteration
5 Orbitomaxillarydefect
6 Nasomaxillarydefect
Horizontal Component
Letter
a Palatal defectonly,notdental alveolus
b Lessthanor equal to1/2 of the bilateral ortransverse anterior
c Lessthan or equal to 1/2 of the unilateral
d Greaterthan 1/2 of the maxillectomy