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  Indian J Med Microbiol
 

Figure 1: On examination, the patient had poor oral hygiene. With appropriate lighting, a dark opening was visualized in the left upper gingivobuccal sulcus likely connecting with the left maxillary sinus

Figure 1: On examination, the patient had poor oral hygiene. With appropriate lighting, a dark opening was visualized in the left upper gingivobuccal sulcus likely connecting with the left maxillary sinus