Please activate JavaScript!
Please install Adobe Flash Player, click here for download
ePaper created 2017-01-25, 09:48:20 | version 1.38.0
25 1_2017 plants is medium- or low density bone sites in the maxilla. Nevertheless, a slight modifica- tion of the original drilling protocol was ad- opted in that implant sites were underpre- pared according to the bone density. However, a guided screw tapping for half the depth of the osteotomy site was performed immediate- ly before the implant placement. Great care was taken to ensure optimal accuracy during implant placement because the implant mount had a smaller diameter than that of the sleeve. Nevertheless, this feature allowed the clinician to perceive the implant stability within the bone, without any friction between the im- plant mount and the sleeve. _Conclusion Within the limitations of this retrospec- tive study, variable-thread tapered design implants placed using computer-assisted tem- plate-guided surgery, in combination with a specially designed two-piece radiographic stent, can be considered a successful treat- ment option for immediate implant placement and loading in the maxillae of completely edentulous patients, based on the results of up to five years of follow-up. Post-extraction implants showed statistically lower margin- al bone remodeling compared with implants placed into healed sites. The results should be interpreted with care and data should be investigated further in randomized controlled clinical trials. _Competing interests The authors declare that they have no com- peting interests related to this study. No finan- cial support was received for this study. L’articolo è stato pubblicato su Journal of Oral Science & Rehabilitation, volume 2, issue 3/2016 16. Schneider D, Marquardt P, Zwahlen M, Jung RE. A systematic review on the accuracy and the clini- cal outcome of computer-guided template-based implant dentistry. Clin Oral Implants Res. 2009 Sep;20 Suppl 4:73–86. 17. Platzer S, Bertha G, Heschl A, Wegscheider WA, Lorenzoni M. Three-dimensional accuracy of gui- ded implant placement: indirect assessment of clinical outcomes. Clin Implant Dent Relat Res. 2013 Oct;15(5):724–34. 18. D’haese J, Van De Velde T, Komiyama A, Hultin M, De Bruyn H. Accuracy and complications using computer-designed stereolithographic surgical guides for oral rehabilitation by means of dental implants: a review of the literature. Clin Implant Dent Relat Res. 2012 Jun;14(3):321–35. 19. Pettersson A, Komiyama A, Hultin M, Näsström K, Klinge B. Accuracy of virtually planned and template guided implant surgery on edenta- te patients. Clin Implant Dent Relat Res. 2012 Aug;14(4):527–37. 20. Jung RE, Schneider D, Ganeles J, Wismeijer D, Zwahlen M, Hämmerle CH, Tahmaseb A. Computer technology appli- cations in surgical implant dentistry: a systematic review. Int J Oral Maxillofac Implants. 2009;24 Suppl:92–109. 21. Cantoni T, Polizzi G. Implant treatment planning in fresh extraction sockets: use of a novel radio- graphic guide and CAD/CAM technology. Quintes- sence Int. 2009 Oct;40(9):773–81. 22. Von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP. The Strengthe- ning the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 2008 Apr;61(4):344–9. 23. Papaspyridakos P, Chen CJ, Singh M, Weber HP, Gallucci GO. Success criteria in implant den- tistry: a systematic review. J Dent Res. 2012 Mar;91(3):242–8. 24. Mombelli A, Lang NP. The diagnosis and treatment of peri-implantitis. Periodontol 2000. 1998 Jun;17:63–76. 25. Pozzi A, Tallarico M, Moy PK. Three-year post-loading results of a randomised, controlled, split-mouth trial comparing implants with different prosthetic interfa- ces and design in partially posterior edentulous man- dibles. Eur J Oral Implantol. 2014 Spring;7(1):47–61. 26. Bahat O, Sullivan RM. Parameters for successful implant integration revisited part I: immediate lo- ading considered in light of the original prerequi- sites for osseointegration. Clin Implant Dent Relat Res. 2010 May;12 Suppl 1:e2–12. 27. Bahat O, Sullivan RM. Parameters for successful implant integration revisited part II: algorithm for immediate loading diagnostic factors. Clin Implant Dent Relat Res. 2010 May;12 Suppl 1:e13–22. 28. Lee CT, Chiu TS, Chuang SK, Tarnow D, Stoupel J. Alterations of the bone dimension following im- mediate implant placement into extraction so- cket: systematic review and meta-analysis. J Clin Periodontol. 2014 Sep;41(9):914–26. 29. Papaspyridakos P, Chen CJ, Chuang SK, Weber HP. Implant loading protocols for edentulous pa- tients with fixed prostheses: a systematic review and meta-analysis. Int J Oral Maxillofac Implants. 2014;29 Suppl:256–70. 30. Albrektsson T, Linder L. A method for short- and long-term in vivo study of the bone-implant inter- face. Clin Orthop Relat Res. 1981 Sep;159:269–73. 31. Kielbassa AM, Martinez-de Fuentes R, Goldstein M, Ar- nhart C, Barlattani A, Jackowski J, Knauf M, Lorenzoni M, Maiorana C, Mericske-Stern R, Rompen E, Sanz M. Randomized controlled trial comparing a variable- thread novel tapered and a standard tapered implant: interim one-year results. J Prosthet Dent. 2009 May;101(5):293–305. expert article _ chirurgia guidata