Objective: To construct a harmony box based on five correlated cephalometric variables, which serve as a valuable diagnostic tool in orthodontic treatment planning, by analyzing the skeletal relationships of individual craniofacial pattern among Filipino mixed dentition patients.
Materials and Methods: 60 subjects, 34 females and 26 males were selected from patients of a University orthodontic clinic according to established inclusion criteria. Five cephalometric angular measurements were obtained and digitized. Pearson correlation coefficients described the high association among the five variables. The bivariate linear regression analysis was used to construct a harmony box, which contain the cephalometric floating norms of the five correlated variables. Multiple regression analysis and the standard error of the estimate were calculated to construct the harmony schema, which describe the individual craniofacial pattern.
Results: Correlations between the five variables were significant at 0.01 levels. Linear regression equations with corresponding r2 and standard error of the estimate (SE) were illustrated as the harmony box. The multiple correlation coefficients R, the adjusted R2, and the standard error of the estimate when predicting one of the five measured variables from the remaining four by means of a multiple regression analysis were displayed as the harmony schema.
Conclusion: The cephalometric floating norms describing the individual craniofacial pattern among mixed dentition Filipino patients were established based on five correlated variables in the form of a harmony box. It described the sagittal and vertical skeletal relationships and the facial type. The Filipino harmony schema was constructed to determine the harmony of the face.