Akademik Veri Yönetim Sistemi
European annals of dental sciences (Online), cilt.50, sa.1, ss.35-40, 2023 (Hakemli Dergi)
Purpose: This study was conducted to compare őve implant-supported rehabilitation concepts of an edentulous jawbone and to investigate the most biomechanically advantageous technique. Materials and Methods: Five models with implants in different conőgurations were created: All-on-4 concept (two anterior axial and two posterior distally curved implants), All-on-4v4 concept (four distal curved interforaminal implants), All-on-4W (two anterior mesial curved interforaminal implants and two posterior distally curved implants), the All-on-3 concept (one anterior axial and two posterior distally curved implants), and the trefoil system (three interforaminal implants with titanium bar guide support). For this study, bone-level (4.3 × 13 mm) implants of Nobel Biocare and implants of the trefoil system (5 × 13 mm) were used. Spherical loads were applied from the canine and molar regions to evaluate the tension, compression and von Mises stresses by applying 3D őnite element analysis. Results: Among the alternative concepts, trefoil system was the most successful treatment option in biomechanical terms. On the other hand, All-on-3 concept was found to be the last method of choice. This was because of the high stresses on cortical and trabecular bones in most conditions. Conclusions: If the technical details of the Trefoil system are simpliőed in the upcoming period, it will őnd a very common usage area. Classical All-on-4 and All-on-4v4 techniques are the preferred and biomechanically successful treatment options today.