eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-01-28 3 2 325 328 5094 article Mohammad S. Ahmad 1 Sharique A. A.li 3 Ayesha S. Ali 2 Department of Oral Medicine, Budha Dental College, Panta, College of Medical Health Science, Dammam, Kingdom of Saudi Arabia) Departmentof Biotechnology, Saifia College of Sceince and Education, Bhopal (India) The present investigation deal with hospital based retrospecitve study. Patients record for 1999-2001 in Bihar state Government Hospitals and dental center of the district Hospitals were searched to identify oral cancer cases. Total 1155 cases of oral cancer resident in Bihar were recorded from all Hospitals. The commonest intra oral site aficted was the gingive. In male it was more common amongst tobacco chewers. Khaini alone induced 35 per cent ginival cancer. In the smokers oropharyngeal cancer was more common. A high male preponderance was observed (male: female rato was almost 4:1. Only 15.8 per cent were living during the time of data collection. Preponderance of gingival cancer was attributed to the local practice of chewing tobacco. Males mostly practiced chewing andsmoking tobacco. Mortality rate was quite high due to late reporting of the disease. https://www.biotech-asia.org/vol3no2/site-distribution-of-oral-carcinoma-reported-cases-in-some-tobacco-chewers-of-bihar-india-with-special-reference-to-khanini-tobacco-lime-mixture/ Oral cancer; Khaini chewers; Incidence