Dental Imaging is an integral part of clinical dentistry and is referred to as main diagnostic aid. However, it carries a potential harm and the exposure to dental x ray should be minimized where practicable. Therefore, the aim of the present study was to assess the prevalence of knowledge of dental radiograph and safety measures of radiation among patients visiting the dental outpatient department. Materials & Methods: A questionnaire with 16 questions regarding dental radiograph and radiation protection was asked to the patients with minimum primary education and willingness to participate. Results: There was 100% response rate. Although 72.5% of the patients have had dental radiographs taken on them, most of them (72% patients) thought it was to check for tooth decay and rest believed it was a for other reasons. The majority of the patients (83%) relied on their dentists for information regarding dental radiographs. 33% of the patients felt radiographs should be avoided in pregnant ladies. 16% of the patients felt radiographs should be avoided in children. There was a significant association (p < 0.05) between the education level of the patients and their disapprovals on radiographing of pregnant ladies. Conclusion: The radiographs can pose as a potential hazard to health of both dentists as well as the patients. Hence more emphasis needs to be laid on educating the population about hazards and protection, in order to reduce the unnecessary dental radiation exposure.