Abstract
BackgroundCurrently, insufficient bone volume always occurs in the posterior maxilla which makes implantation difficult. Short implants combined with transcrestal sinus floor elevation (TSFE) may be an option to address insufficient bone volume.PurposeThe clinical performance of short implants combined with TSFE was compared with that of conventional implants combined with TSFE according to the survival rate.MethodIn this systematic review and meta-analysis, we followed the Meta-Analysis of Observational Studies in Epidemiology (MOOSE) guidelines. Articles were identified through PubMed, Embase, the Cochrane Library, and manual searching. Eligibility criteria included clinical human studies. The quality assessment was performed according to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines. The odds ratio (OR) with its confidence interval (CI) was considered the essential outcome for estimating the effect of short implants combined with TSFE.ResultsThe registration number is INPLASY202050092. Eleven studies met the inclusion criteria, including 1 cohort study and 10 cross-sectional studies. With respect to the 1-year survival rate, no significant effect was observed between short implants (length ≤ 8 mm) and conventional implants combined with TSFE (I2=0%, OR=1.04, 95% CI: 0.55-1.96). Similarly, no difference was seen between the two groups regarding the survival rate during the healing period (I2=10%, OR=0.74, 95% CI: 0.28-1.97) and 3-year loading (OR=1.76, 95% CI: 0.65-4.74).ConclusionThere was no evidence that the survival rate of short implants combined with TSFE was lower or higher than that of conventional implants combined with TSFE when the residual bone height was poor and the implant protrusion length of short implants was less than or similar to conventional implants. Nevertheless, the results should be interpreted cautiously due to the lack of random controlled trials in our meta-analysis.
Highlights
Dental implants are widely used in dentition defects
With respect to the 1-year survival rate, no significant effect was observed between short implants and conventional implants combined with transcrestal sinus floor elevation (TSFE) (I2=0%, odds ratio (OR)=1.04, 95% confidence interval (CI): 0.55-1.96)
There was no evidence that the survival rate of short implants combined with TSFE was lower or higher than that of conventional implants combined with TSFE when the residual bone height was poor and the implant protrusion length of short implants was less than or similar to conventional implants
Summary
Dental implants are widely used in dentition defects. insufficient bone volume always occurs in the posterior maxilla, which makes implantation difficult. Lateral sinus floor elevation, introduced by Boyne and James in 1980 [1], is a conventional method utilized in situations with insufficient bone height Considering that this method is invasive and time-consuming, a modified technique is required in the oral clinic, and osteotome sinus floor elevation was initially proposed by Tatum and Summers [2, 3], to decrease unnecessary trauma and complications. This technology has been proven to be an excellent choice when the available bone height exceeds 5 mm [4, 5]. Insufficient bone volume always occurs in the posterior maxilla which makes implantation difficult. Purpose: The clinical performance of short implants combined with TSFE was compared with that of conventional implants combined with TSFE according to the survival rate
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