Fig. 4.

Comparison control-agenesis using a continuation-ratio model. The example refers to tooth t34 for female patients. a Conditional probability of making the transition from the lower stage to the specific stage for tooth t34 in female patients. For example, the green line refers to the probability of going from stage G to stage H. The red line refers to the probability of going from a stage before E to stage E. The dotted line stands for the agenesis group, the solid line refers to the control group. b At each age, the probability of each Demirjian score. For example, the green line refers to the probability of being at stage H at a certain age, for tooth 34 in females. The red line refers to the probability of being at stage D or earlier at a certain age. Again, the dotted line stands for the agenesis group, the solid line refers to the control group