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Introduction: India leads the world with largest number of diabetic subjects earning the dubious distinction of being termed the 'diabetes capital of the world'. Oral manifestations of diabetes mellitus are devastating, these include gingival and periodontal diseases, bone loss, dental caries, alterations in salivary flow and others.

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Background: To assess the self perception of one's own smile and its influence on their behavior and also their ability to rate different types of smiles from most attractive to least attractive on a visual analogue scale by dental and non dental students. Methods: This study was carried out by using structured questionnaire and booklet of visual analogue scale distributed to 276 students in Taif University that included Dental, Medical and Pharmacy students. Results: Medical (66%), Pharmacy (60%) and dental students (49%) agreed for confidence in their own smile. Observing smiles of others in photographs was significantly higher for dental students 60%, compared to medical 58% and pharmacy 41% students. 56% of both dental and medical students agreed that they recognized the minor defects in their own smile whereas for pharmacy students 40% agreed for the same [p<0.01]. Conclusion: This survey showed that the dental and medical students were able assess their own smile and also other's smile better than pharmacy students. Dental students were able to detect minor defects in smile photographs better than medical and pharmacy students.

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