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The present study aims to determine the impact of malocclusion on oral health related quality of life (OHRQoL) among 13-16years old Malay school children. School children aged between 13 and 16years old were randomly selected from a secondary school in Penang. Malay version of Oral Health Impact Profile-14 (OHIP-14) questionnaires were given to the subjects. This questionnaire has 14 questions with seven domains which are functional limitation, psychological discomfort, physical pain, physical disability, psychological and social disability