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Significant Marginal Bone Loss Is Observed Around Tilted Implants Supporting a Full-Arch Denture
TAKE-HOME MESSAGE
- In this umbrella review (a review of systematic reviews), the authors compared the rates of marginal bone loss and implant failure between tilted and axially placed implants. Based on the data extracted from eight included systematic reviews, the following key results were noted: (1) concerning the implant failure rate, no statistically significant difference was found between tilted and axial implants, and (2) although no significant marginal bone loss was noted around tilted implants supporting fixed partial dentures, tilted implants supporting full-arch dentures exhibited higher rates of marginal bone loss after 3 years.
- To prevent marginal bone loss, clinicians should avoid tilted placement of dental implants, especially if they are placed to support a full-arch denture.
abstract
This abstract is available on the publisher's site.
Access this abstract nowOBJECTIVES
Several anatomical and histological limitations can complicate implant placement, angulated implant positioning appeared to compensate these limitations. However several studies suggested a higher rate of marginal bone loss and implant failure regarding tilted implants in comparison with conventional implant. Therefore this umbrella review aims to summarize and analyze all the evidence available concerning marginal bone loss and implant failure between tilted and axial implants.
METHODS
An electronic literature search was conducted, without any language restrictions and only systematic reviews with meta-analysis or meta-analysis studies were included. The outcomes assessed in this review were implant failure and marginal bone loss in mm. Relative risks (RRs) and the differences of the mean (MD) were calculated with 95% confidence intervals (CIs) regarding implant failure and marginal bone loss respectively.
RESULTS
in total 8 studies were included, based on the short-term results, a non-significant mean difference (MD=0.00; 95% Cl; -0.01-0.02; p-value = 0.75) was recorded between tilted and axial implants supporting full-arch dentures, meanwhile a significant mean difference was recorded on a 3 years and long term follow-up reached (MD= 0.08 95% Cl = 0.05-0.11; p value<0.00001)) and (MD= 0.18; 95% Cl= 0.15-0.20; p value< 0.00001) respectively, and an insignificant difference was observed between tilted and axial implants regarding implant failure (RR=1.02; 95% Cl=0.85-1.23; p value= 0.81).
CONCLUSION
This review based on high and moderated quality studies with low risk of bias demonstrated no significant outcome was observed between tilted implants supporting full-arch or fixed partial denture and axial implants regarding implant failure.
Additional Info
Disclosure statements are available on the authors' profiles:
Implant Failure and Marginal Bone Loss Between Axial and Tilted Implant: An Umbrella Review with Meta-analysis
Int J Oral Maxillofac Implants 2024 Jun 28;[EPub Ahead of Print], AA Malak, Y El Masri, J El Masri, HA Issawi, P Salameh, G AounFrom MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.