[Reconstruction of initial dimensions of the lower residual ridge and classification of reduction in vertical...

On the basic of Rtg craniometric parameters described in previous works, in this article a graphical reconstruction of initial dimensions of the lower jaw residual ridge, classification of the reduction according to classes and subclasses of its expression in vertical direction and comparison of reduction intensity in the frontal and molar regions of edentulous jaws are presented. The study concerned 35 lateral head films of edentulous patients, chosen at random. The results of the study revealed the reduction of residual ridge (RRG) in all edentulous patients, and according to the degree of its expression it was different in frontal and mollar regions. By statistic processing of certain classes and sub-classes of reduction and by appropriate tests of significance significant differences in the expression of RRG in these regions were ascertained. According to our finding the molar region was more susceptible to these processes. The reported values offer the possibility for more precise prosthetic reconstruction of the lost tissue and relations in the treatment of edentulous patients.