Prognosis of implants and fixed restorations after lateral sinus elevation: a literature review

Abstract

Aim of this review was to investigate the prognosis of implants inserted in augmented sinuses and fixed restorations supported by these implants. Special attention was given to the impact of grafting material, time of implant placement, residual bone height and type of fixed restoration. An electronic search in PubMed, the German database medpilot and the Cochrane Library was executed followed by supplementary manual search in relevant journals. The search was limited to human studies published up to November 2010. Only publications in English and German, in peer-reviewed journals, were considered. After the initial search and application of selection criteria on titles and abstracts, a full-text analysis of 67 articles was performed, out of which six prospective and three retrospective studies were finally included in the review. The heterogeneous properties of the identified articles did not allow systematic analysis of the data. Success rates of implants were between 96·3% and 100%, survival rates were between 75% and 100%, and survival rates of single crowns, splinted crowns and fixed partial dentures ranged between 96·4% and 100% after a follow-up of 12-101 months. Within the limits of this review, the prognosis of implants and fixed restorations seemed not to be influenced by the type of restorations, graft material, residual bone height and time of implant placement. However, conclusions of this review are based on studies with low level of evidence; therefore, careful interpretation is required. Multicentre randomised controlled clinical trials with sufficient statistical power concentrating on few factors are needed to reach sound conclusions.

Long-Term Survival of Dental Implants Placed in the Grafted Maxillary Sinus: Systematic Review and Meta-Analysis of Treatment Modalities

“…Moreover, the treatment parameters surgical approach, grafting material, and implant type showed no selective preference. Recent investigations concluded similar results with the prognosis of implants unaffected by the type of graft material, residual bone height and time of implant placement [65]. Other investigations advocated that the use of autogenous bone, rough and screw-type implants as well as membranes exhibit favourable results [6].…”

Analysis of implant-failure predictors in the posterior maxilla: A retrospective study of 1395 implants

“…Tuna et al also performed a literature review including 67 articles concerning the prognosis of implants after lateral sinus elevation. In this review, the success rates of implants were between 96.3% and 100% and the survival rates were between 75% and 100% after a follow-up of 12e101 months (Tuna et al, 2012).…”

Assessment of Implant Stability Following Sinus Lift Procedures with Different Grafting Materials

“…U prethodnim istraživanjima zaključeno je da na prognozu implantata postavljenih u augmentirane sinuse i fiksnih nadomjestaka na istim implantatima ne utječu čimbenici kao što su nadomjesni materijal, vrsta nadomjestka, rezidualna visina kosti i vrijeme postavljanja implantata (25). Stoga se RFA-mjerenja mogu preporučiti, posebice ako se razmatra imedijatno ili rano opterećenje implantata.…”

“…Previous studies concluded that the prognosis of implants inserted in augmented sinuses and fixed restoration supported by this implants seemed not to be influenced by factors such as graft material, type of restoration, residual bone height and time of implant placement (25). RFA measurements are therefore highly recommended, especially if a clinician is considering immediate or early implant loading.…”