Divine Proportion in edentulous subjects: assessment before and after complete dentures
Keywords:Complete denture, x-rays, cephalometry
AbstractPurpose - The aim of this study was to evaluate ratios between bone structures of the skull and the face of edentulous subjects, before and after prosthodontic treatment with complete dentures. Methods - New complete dentures were fabricated by conventional methods, and subjects (n= 30) were evaluated cephalometrically before and after the new prosthesis. Using the same cephalometric unit, standardized lateral cephalometric headfilms were made on each subject in two times: the first without the complete dentures, in the rest position of the mandible, and the second with the new one in place, in maximal intercuspation. The lateral cephalometric x-rays were digitized and analyzed using computer software Radiocef Studio 2 – Radiomemory (Belo Horizonte, Minas Gerais, Brazil). The means of 7 different ratios were statistically analysed by paired t-test and Student`s t-test, and compared with the golden number 1,618. Results - There were no statistically significant results in ratios Or-Me/Co-Go, Pog-Op/Or-Me and Pog-Op/Enp-Op, before and after prosthodontic treatment. The ratios Or-Me/Ena-Enp, Or-Me/N-Ena, Or-Me/Op-N and N-Me/Ena-Me were different statistically. Conclusion - The ratio N-Me/Ena-Me wich relates two important segments, the total anterior facial height and the lower anterior facial height, was closer to the golden number after news complete dentures.
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