Biomechanical behavior of titanium and zirconia frameworks for implant‐supported full‐arch fixed dental prosthesis
Tóm tắt
The biomechanical behavior of implant‐supported titanium and zirconia full‐arch fixed dental prosthesis (FAFDP) frameworks require further investigation.
Strains transferred by implant‐supported titanium (Ti) and zirconia (Zr) FAFDP frameworks were analyzed.
Maxillary 14‐unit FAFDPs supported by 6 implants and 12‐unit FAFDPs supported by 4 implants were tested. One‐piece frameworks were fabricated by computer‐aided design/computer‐aided manufacturing. Four groups were divided (
The following strains (μS) averaged over the length of the second premolar were calculated: frameworks, G1 (321.82 ± 111.29), G2 (638.87 ± 108.64), G3 (377.77 ± 28.64), G4 (434.18 ± 132.21); model surface, G1 (473.99 ± 48.69), G2 (653.93 ± 45.26), G3 (1082.50 ± 71.14), G4 (1218.26 ± 230.37). Zirconia frameworks supported by 6 implants (G2) presented higher surface strains (
Zirconia frameworks supported by 6 implants showed higher strains. FAFDPs supported by 6 implants transferred less strains to the supporting maxilla, irrespective of framework material.
Từ khóa
Tài liệu tham khảo
Pomares C., 2010, A retrospective study of edentulous patients rehabilitated according to the 'all‐on‐four' or the 'all‐on‐six' immediate function concept using flapless computer‐guided implant surgery, Eur J Oral Implantol., 3, 155
Gomes EA, 2011, Effect of metal‐ceramic or all‐ceramic superstructure materials on stress distribution in a single implant‐supported prosthesis: three‐dimensional finite element analysis, Int J Oral Maxillofac Implants., 26, 1202
Ciftci Y, 2000, The effect of veneering materials on stress distribution in implant‐supported fixed prosthetic restorations, Int J Oral Maxillofac Implants., 15, 571
Silva GC, 2010, Stress patterns on implants in prostheses supported by four or six implants: a three‐dimensional finite element analysis, Int J Oral Maxillofac Implants., 25, 239
Rangert BR, 1997, Load factor control for implants in the posterior partially edentulous segment, Int J Oral Maxillofac Implants., 12, 360
Salvi GE, 2009, Mechanical and technical risks in implant therapy, Int J Oral Maxillofac Implants., 24, 69
Meloni SM, 2010, Implant treatment software planning and guided flapless surgery with immediate provisional prosthesis delivery in the fully edentulous maxilla. A retrospective analysis of 15 consecutively treated patients, Eur J Oral Implantol., 3, 245
Larsson C, 2010, A prospective study of implant‐supported full‐arch yttria‐stabilized tetragonal zirconia polycrystal mandibular fixed dental prostheses: three‐year results, Int J Prosthodont., 23, 364