Ibrahim Hassan El-Kalla^A, Salwa Mohamed Awad^B,  Hanaa Mahmoud Shalan^B, &HumammamdouhSerriah^{C A}Professor of Pediatric Dentistry, Faculty of Dentistry, Mansoura University  ^BAssoc. Prof. Pediatric Dentistry Mansoura University  ^CB.D.S Misr University for Science and Technology (2010)  Cairo, Egypt Abstract: Aim. Evaluate children's body movement and their behaviors during dental treatment using Frankle, Venham Behavior Rate Scale (BRS) and Kurosu Behavior Evaluation Scale (BES). Materials and methods.One-hundred children were enrolled in this study, who visited the pediatric dentistry clinic at Faculty of Dentistry, Mansoura University. The child behavior was recorded on a videotape with a fixed camera position.The behavior of the children was evaluated by the Frankl and Venham BRS and the child body movement was evaluated by the behavior evaluation scale developed by Kurosu over three phases of dental treatment (I-observation phase, II-anaesthetic phase, III-treatment phase). Kendall's Coefficient of Concordance, Spearman's Rho correlation and Gamma measures were conducted to investigate the relationship between the three scales in each phase. Results.The study found that there is a direct correlation between the anxiety and phase of dental procedures. It also revealed that local anaesthesia phase is the main behavior regression phase that leads to a child's uncooperative behavior. By observation of the body movements of the children and making a relation between body movements and child behavior it was clear that Kurosu BES is a reliable tool and provides definite items for observation. Kurosu BES demonstrated disagreement with Frankl BRS in phase I. In contrast, a close and highly consistent agreement was found between Kurosu BES and Frankl BRS in phase II and III and between Kurosu BES and Venham BRS in all phases. Conclusions.Rating scales to evaluate the behavior of children in dental setting present a number of significant advantages. All children exhibited an improvement in behaviour during the observation phase (I) and gradually decrease with the most regression showed at anaesthesia phase (II). Behaviour Evaluation Scale, developed by Kurosu appears to be more sensitive than the other scales. Ibrahim Hassan El-Kalla^A, Salwa Mohamed Awad^B,  Hanaa Mahmoud Shalan^B, &HumammamdouhSerriah^{C A}Professor of Pediatric Dentistry, Faculty of Dentistry, Mansoura University  ^BAssoc. Prof. Pediatric Dentistry Mansoura University  ^CB.D.S Misr University for Science and Technology (2010)  Cairo, Egypt Abstract: Aim. Evaluate children's body movement and their behaviors during dental treatment using Frankle, Venham Behavior Rate Scale (BRS) and Kurosu Behavior Evaluation Scale (BES). Materials and methods.One-hundred children were enrolled in this study, who visited the pediatric dentistry clinic at Faculty of Dentistry, Mansoura University. The child behavior was recorded on a videotape with a fixed camera position.The behavior of the children was evaluated by the Frankl and Venham BRS and the child body movement was evaluated by the behavior evaluation scale developed by Kurosu over three phases of dental treatment (I-observation phase, II-anaesthetic phase, III-treatment phase). Kendall's Coefficient of Concordance, Spearman's Rho correlation and Gamma measures were conducted to investigate the relationship between the three scales in each phase. Results.The study found that there is a direct correlation between the anxiety and phase of dental procedures. It also revealed that local anaesthesia phase is the main behavior regression phase that leads to a child's uncooperative behavior. By observation of the body movements of the children and making a relation between body movements and child behavior it was clear that Kurosu BES is a reliable tool and provides definite items for observation. Kurosu BES demonstrated disagreement with Frankl BRS in phase I. In contrast, a close and highly consistent agreement was found between Kurosu BES and Frankl BRS in phase II and III and between Kurosu BES and Venham BRS in all phases. Conclusions.Rating scales to evaluate the behavior of children in dental setting present a number of significant advantages. All children exhibited an improvement in behaviour during the observation phase (I) and gradually decrease with the most regression showed at anaesthesia phase (II). Behaviour Evaluation Scale, developed by Kurosu appears to be more sensitive than the other scales.