“All-on-four” concept and immediate loading for simultaneous rehabilitation of the atrophic maxilla and mandible with conventional and zygomatic implants

The All‐on‐Four Treatment Concept: A Systematic Review

“…Vague documentation of results Jensen et al 52 Case report Bedrossian 53 Zygoma implants Khatami and Smith 54 Case report Bedrossian 55 Zygoma implants Krekmanov et al 11 Number of implants/study design Butura et al 56 Case report Menini et al 33 Literature review Cannizzaro et al 57 Study design/no survival rates reported 64 Case report, zygoma implants Penarrocha-Oltra et al 65 Literature review Graves et al 66 Zygoma implants Pomares 67 Number of implants Graves et al 68 Zygoma implants Rosen and Gynther 69 Number of implants Jensen et al 70 Case report Wu et al 71 Language 74 Number of implants/study design Penarrocha-Oltra et al 75 Not tilted/study design Astrand et al 76 Number of implants/overdentures Pieri et al 77 Number of implants Eccelente et al 78 Removable prosthesis Pomares 79 Number of implants Ekelund et al 80 Number of implants Pomares 67 Number of implants Friberg and Jemt 81 Not tilted Romanos et al 82 Removable prosthesis Heschl et al 83 Removable prosthesis Wolfinger et al 84 Number of implants/study design Li et al 85 Number of implants/study design Wu et al 71 Language…”

Zygomatic and Maxillary Implants Inserted by Means of Computer-Assisted Surgery in a Patient With a Cleft Palate

“…Recently, Ferreira et al 43 reported the rehabilitation of a patient with a hybrid (2 zygomatic and 2 conventional implants) all-on-4 implant-supported prosthesis for the maxilla, immediately restoring all 4 implants with an interim prosthesis; this procedure was described by the authors as a viable, fast, and effective treatment option.…”

“…In this case report, considering the experiences of Laine et al 17 and Ferreira et al, 43 we decided to treat the patient using a modified all-on-4 protocol, in which 2 zygomatic implants and 4 maxillary implants were scheduled in the posterior regions, because no implants could be inserted in the anterior region.…”

Stress Distribution on Edentulous Mandible and Maxilla Rehabilitated by Full-Arch Techniques: A Comparative 3D Finite-Element Approach

“…With the aim to reduce cantilever and to obtain a conservative and rational solution for optimizing load transfer mechanisms on the available bone, systems based on tilted implants have been recently proposed (Aparicio et al, 2001;Calandriello & Tomatis, 2005;Capelli et al, 2007;Del Fabbro et al, 2010;Krekmanov et al, 2000;Testori et al, 2008), as well as the possibility to employ short implants in molar regions could be considered (Renouard & Nisand, 2005). Actually, two of the most used systems for the full-arch immediate-loading rehabilitation of upper and lower edentulous jaws are based on the "Allon4" and "SynCone" concepts (Eccellente et al, 2010;Ferreira et al, 2010;Romanos, 2004). Both systems employ threaded implants usually placed in the anterior region, and allow the functional and aesthetic rehabilitation of 12-14 teeth per arch.…”

“…Clinical effectiveness and reliability of Allon4 and SynCone techniques have been focused in a number of recent studies, showing results of both experimental in-vivo tests and follow-up analyses (Degidi & Piattelli, 2005;Ferreira et al, 2010;Khatami & Smith, 2008;Malò et al, 2005;Portmann & Glauser, 2006;Puig, 2010), whereas significant and conclusive clinical evidences are not available for full-arch rehabilitations that combine the use of posterior mini implants and platform-switching concepts. Nevertheless, clinical in-vivo approaches and follow-up analyses usually furnish a posteriori indications of functional performance and osseointegration evolution associated with a given rehabilitative protocol.…”