Tooth formation is widely used to assess maturity and to predict age. With in clinical dentistry, such information aids in diagnosis andTreatment planning. Numerous methods exist that allow either theprediction of age or an assessment of maturation. One widely usedmethod was first described in 1973 by Demirjian et al., based on alargenumber of French-Canadian children. Many changes and adaptations andeven soft ware formulations have been made to the original Demirjian methodduetodifferencesfoundinthepopulationswheretheclassicalmethodhadbeentested.The purpose of this study was to evaluate applicability ofDemirjian's method for dental age estimation in/Egyptian children A gin 6-8 years (apartoflargerstudyincluding1400Egyptianchild).The panoramicra diographs were selected to be equally divided equally in to100 boys and100girlsin4groups with6monthsinterval.panoramic radiographs of 200 healthy, Egyptian .children, 6-8 years of age were examind with Demirjians,s method using the soft ware Onyx ceph 3dPanoramicradiographs were examined and have stages from A-H according to Demirjian staging system and then every stage was converted in to a score and the sum of the maturity scores was converted into anestimated dentalage.Dental age was compared to chronological age by using a paired t-test.The meanage for individual teeth for each stage was calculated. TheAEgyptian children were generally delayed in dental maturity comparedwith the children in Demirjian's sample. The over al lover estimation of the dental age in boys was ranging from 0.57y to 0.11 y with a mean.