Objective: Urbanization is increasing the number of street children in most regions of the world especially in many African cities which may be due to poverty and unemployment status of many parents. This study was aimed at determining the predictors and prevalence of dental caries and trauma among institutionalized (those in juvenile correctional home) and non-institutionalized street children in Ibadan.Methods: This cross-sectional study was carried out among institutionalized (juvenile correctional home) and non-institutionalized street children. Cluster sampling technique was used in the selection of children for this study. Children were selected from the juvenile correctional home and four major motor parks in Ibadan metropolis.Results: One hundred and thirty eight children participated in this study. Male constituted 65.9% while female was 34.1%. Thirty five (25.4%) are from the juvenile correctional home (institutionalized street children) while 103 (74.6%) are from the streets. The prevalence of dental caries among the children generally was 29.0%, while that of dental trauma was 18.8%.Conclusion: The significant predictors of dental caries were gender, tooth hypoplasia and the presence of visible plaque on the anterior teeth while those of dental trauma were lip competence, substance use, age and gender.Keywords: Street children, Juvenile home, Caries, Trauma