Khan MA, Adnan M, Mansor F. FREQUENCY AND FACTORS RESPONSIBLE FOR THE FORMATION OF OROANTRAL COMMUNICATION DURING EXTRACTION OF THE MAXILLARY POSTERIOR TEETH. Pak Oral Dent J. 2017;37(3):411-415. Accessed April 17, 2026. https://www.podj.com.pk/index.php/podj/article/view/48