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

Abstract

The available data provide promising short-term results for the all-on-four treatment approach; however, current evidence is limited by the quality of available studies and the paucity of data on long-term clinical outcomes of 5 years or greater. In terms of an evidence-based dentistry, the authors recommend further studies designed as randomized controlled clinical trials and reported according to the CONSORT statement.

Micromotion analysis of different implant configuration, bone density, and crestal cortical bone thickness in immediately loaded mandibular full‐arch implant restorations: A nonlinear finite element study

“…The all-on-four concept has been successful in short-term clinical studies. 22,23 However, there have been very few long-term studies.…”

Maxillary restoration with complete maxillary prosthesis supported by implants with immediate loading: clinical retrospective study of 48 cases

“…It is interesting to note that in our study, the majority of implant failures occurred in the first months following the intervention. A literature review by Patzelt et al [26] on rehabilitation by prostheses on stilts regarding 4804 implants shows that 74% implant failures have occurred during the first 12 months. This is a percentage close to the 80% failure rate before 12 months found in our study.…”

Evidence‐Based Criteria for Differential Treatment Planning of Implant Restorations for the Maxillary Edentulous Patient

“…97 Long tilted implants parallel to the anterior wall of the sinus allow for high levels of primary stability, a longer occlusal table, and a shorter cantilever when posterior native bone is unavailable for vertical implants. 156 Patzelt et al 157 completed a systematic review, including 1201 All-on-4 immediately loaded prostheses (within 48 hours), and reported a 99% implant and prosthesis survival rate for 36 months for the maxilla or mandible. Seventy-four percent of the implant failures were documented in the first year.…”