Background: The salivary glands have an important role in the functions of digestion<br />by making lubrication fluid, respiration, speech, and overall homeostasis, and they also<br />contain antibodies. Generally, the salivary gland tumors might be categorized into non<br />inflammatory, inflammatory, and neoplastic swellings such as calculi, benign tumors<br />like Warthin tumor, oncocytoma, pleomorphic adenoma, malignant tumors involving<br />undifferentiated carcinoma, adenoid cystic carcinoma, and adenocarcinoma.<br />Methodology: This epidemiological study

prevalence of periodontal disease was reported to range from 20% to 50% around the world. It is one of the major causes of tooth loss which can compromise mastication, esthetics, self-confidence, and quality of life .the major problem that salivary gland tumor do is decreasing the amount of saliva in the oral cavity that lead to change in oral flora and dehydration of the tissue especially periodontal tissue. This study was held to found the direct relationship between saliva amount and periodontitis.Method: this epidemiological study held out by collection of data from 90 patients that seeking out clinics in duhok and zakho and seeking azadi general hospital complaining from periodontal problems. Result: 90 patients involved in this study 47(%52.22) of theme with history of parotid gland tumor, 24(%26.66) with submandibular salivary gland tumor, and 19(%21.11 with sublingual salivary gland tumor.68 (75.55%) are benign category while 22(24.44%) malignant patients having severe xerostomia are 28(31.11%) Moderate types of xerostomia are 14(%15.55) patients, while mild type

prevalence of periodontal disease was reported to range from 20% to 50% around the world. It is one of the major causes of tooth loss which can compromise mastication, esthetics, self-confidence, and quality of life .the major problem that salivary gland tumor do is decreasing the amount of saliva in the oral cavity that lead to change in oral flora and dehydration of the tissue especially periodontal tissue. This study was held to found the direct relationship between saliva amount and periodontitis.Method: this epidemiological study held out by collection of data from 90 patients that seeking out clinics in duhok and zakho and seeking azadi general hospital complaining from periodontal problems. Result: 90 patients involved in this study 47(%52.22) of theme with history of parotid gland tumor, 24(%26.66) with submandibular salivary gland tumor, and 19(%21.11 with sublingual salivary gland tumor.68 (75.55%) are benign category while 22(24.44%) malignant patients having severe xerostomia are 28(31.11%) Moderate types of xerostomia are 14(%15.55) patients, while mild type