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  Indian J Med Microbiol
 

Figure 3: A mid-crestal incision along with two facial vertical extensions are made and a trapezoidal mucoperiosteal flap is elevated to expose the lateral wall of the maxillary sinus

Figure 3: A mid-crestal incision along with two facial vertical extensions are made and a trapezoidal mucoperiosteal flap is elevated to expose the lateral wall of the maxillary sinus