Implant survival rates after maxillary sinus augmentation

Abstract

Implant therapy in the atrophic posterior maxilla becomes challenging in the presence of reduced maxillary bone height. Sinus augmentation can be performed for resolving this condition prior to implant placement. The aim of this article was therefore to evaluate implant survival rates in the grafted sinus taking into account the influence of the implant surface, graft material, and implant placement timing. A systematic review of the literature was performed. Articles retrieved from electronic databases were screened using specific inclusion criteria, and data extracted were divided according to: graft material (autogenous, non‐autogenous, composite graft), implant surface (machined or textured), and implant placement (simultaneous with grafting or delayed). Fifty‐nine articles were included. Survival rates for implants placed in grafts made of bone substitutes alone and grafts of composite material were slightly better than the survival rates for implants placed in 100% autogenous grafts. Over 90% of implants associated with non‐autogenous grafts had a textured surface. Textured surfaces achieved better outcomes compared with machined surfaces, and this was independent of the graft material. Simultaneous and delayed procedures had similar outcomes. It may be concluded that bone substitutes can be successfully used for sinus augmentation, reducing donor‐site morbidity. Long‐term studies are needed to confirm the performance of non‐autogenous grafts. The use of implants with a textured surface may improve the outcome in any graft type.

Evaluation of the posterior superior alveolar artery and the maxillary sinus with CBCT

“…[3][4][5][6] Knowledge of the anatomic structure of the area is important for this procedure. In the present study, we were able to observe the presence and location of the PSAA with CBCT scans.…”

“…1,2 Sinus augmentation is a safe procedure with high predictability for rehabilitation of severely atrophic posterior maxillae. [3][4][5][6] The branches of the maxillary artery should be taken into consideration during sinus augmentation because of the potential risk of bleeding during the procedure owing to damage to the vascular supply in the lateral wall. 7 Assessment of the maxillary sinus anatomy is important to avoid unnecessary complications due to the close anatomical relationship of the PSAA with the Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript.…”

Various Ways to Enhance the Results of Maxillary Sinus Augmentation Procedures

“…Various bone-grafting materials are being used in sinus augmentation including freezedried bone allograft (Avila et al, 2010), bovine xenograft (Chaushu et al, 2009), and alloplastic material (Bae et al, 2010) as an alternative or supplement to autogenous bone. Sinus augmentation procedures are highly predictable, with many studies reporting over 95% success (Del Fabbro et al, 2008). However, sinus augmentation may be influenced by the choice of graft material and implant surface micromorphology (Del Fabbro et al, 2008), and controversies still exist related to the most suitable way to perform sinus augmentation.…”

An Alternative Maxillary Sinus Lift Technique – Sinu Lift System

“…Several studies have reported excellent long term survival rates for implants placed in the augmented maxillary sinuses [15,16].…”