Glass ionomer Cement is the most commonly used restorative material in pediatric dentistry because of its desirable properties such as anticariogenic action due to fluoride release, biocompatibility, chemical bonding to tooth structure and ease of manipulation. A 12 month follow up study was done to evaluate the success and failure rate of glass ionomer restoration in various types of cavities in different teeth. Children of age group 6-7 years having similar diet, life style, water supply and under supervised oral hygiene maintenance were selected from a residential school for this study. Primary oral health education to all children was given prior to the start of study and duration of follow up was standardized.