The objective structured clinical examination (OSCE) is being widely used for assessment of skills in dental education around the world. In India, OSCE awareness is rising, and a few exploratory attempts have been made in its implementation. This article describes use of a five-station mini-OSCE for formative assessment of dental diagnostic and radiographic skills in an undergraduate curriculum. Besides gaining experience in OSCEs, the purpose of this project was to study their validity, objectivity, feasibility, acceptability to students and faculty, and impact on student performance. The mini-OSCE was found to be a fairly valid and reliable tool for formative assessment, though it required more planning, preparation, and resources than other means of assessment. A specially developed orientation module improved its feasibility. The nineteen students perceived it to be a meaningful examination and a fair method due to uniformity of tasks and time allocation; they found the scoring to be transparent and objective. The specific and immediate feedback received was appreciated by both students and faculty members.