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ePaper created 2017-01-25, 09:48:20 | version 1.38.0
1_2017 24 physical borders of the scanned radiographic guide, NobelClinician (Nobel Biocare) is de- signed to work with the unique and innovative NobelGuide calibration procedure. The calibra- tion object is a high precision object, milled from a material that behaves the same way when penetrated by X-rays as the resins typi- cally used for the radiographic guide in combi- nation with the scanner. This process ensures that each time the CBCT scanner is used with a known scanner the surgical template pro- duced will have the same fitting dimensions as the originally scanned radiographic guide. As a result, the procedure does not calibrate the scanner, but calibrates the full workflow, from an accurately fitting radiographic guide to an accurately fitting surgical template. Many fac- tors are likely to affect the success of immedi- ately loaded implants, including bone quality and quantity, the skill and experience of the clinician, implant design, implant primary sta- bility, micro- and macro movement, as well as occlusion. The quality and quantity of bone at the implant site have been shown to be im- portant in determining the success of dental implants and are critical for ensuring the ini- tial stability of the implant upon insertion.29 Primary implant stability and lack of micro movement are considered to be two of the main factors necessary for achieving predict- able high success rates for osseointegrated oral implants.30 Thus, a high insertion torque value appears to be one of the prerequisites for a successful immediate or early loading procedure. The variable-thread tapered im- plant design with a moderately rough surface was introduced into the market to facilitate one-stage surgical procedures and to allow for immediate placement and anticipated loading protocols.31 According to the results of the present study, in which all of the patients in- cluded had failing maxillary dentition and re- fused interim complete removable dental prostheses, the major indication for such im- 1. Turkyilmaz I, Company AM, McGlumphy EA. Should edentulous patients be constrained to removable complete dentures? The use of dental implants to improve the quality of life for edentulous patients. Gerodontology. 2010 Mar;27(1):3–10. 2. Swelem AA, Gurevich KG, Fabrikant EG, Hassan MH, Aqou S. Oral health-related quality of life in partially edentulous patients treated with re- movable, fixed, fixedremov able, and implant- supported prostheses. Int J Prosthodont. 2014 Jul-Aug;27(4):338–47. 3. Emami E, de Souza RF, Kabawat M, Feine JS. The impact of edentulism on oral and gene- ral health. Int J Dent. 2013;2013:498305. doi: 10.1155/2013/498305. Epub 2013 May 8. 4. Tallarico M, Meloni SM, Canullo L, Caneva M, Po- lizzi G. Five-year results of a randomized control- led trial comparing patients rehabilitated with immediately loaded maxillary cross-arch fixed dental prosthesis supported by four or six im- plants placed using guided surgery. Clin Implant Dent Relat Res. 2015 Oct 7. doi: 10.1111/cid.12380. [Epub ahead of print]. 5. Degidi M, Nardi D, Piattelli A. 10-year follow-up of immediately loaded implants with TiUnite porous anodized surface. Clin Implant Dent Relat Res. 2012 Dec;14(6):828–38. 6. Atieh MA, Payne AG, Duncan WJ, Cullinan MP. Immediate restoration/loading of immediately placed single implants: is it an effective bi- modal approach? Clin Oral Implants Res. 2009 Jul;20(7):645–59. 7. Tallarico M, Canullo L, Pisano M, Penarrocha- Ol- tra D, Penarrocha-Oltra M, Meloni SM. An up to 7-year retrospective analysis of biologic and technical complication with the All-on-4 con- cept. J Oral Implantol. 2016 Jun;42(3):265–71. doi: 10.1563/ aaid-joi-D-15-00098. Epub 2015 Dec 11. 8. De Rouck T, Collys K, Cosyn J. Single-tooth repla- cement in the anterior maxilla by means of im- mediate implantation and provisionalization: a review. Int J Oral Maxillofac Implants. 2008 Sep- Oct;23(5):897–904. 9. Chen ST, Buser D. Clinical and esthetic outcomes of implants placed in postextraction sites. Int J Oral Maxillofac Implants. 2009;24 Suppl:186–217. 10. Van Steenberghe D, Naert I, Andersson M, Brajno- vic I, Van Cleynenbreugel J, Suetens P. A custom template and definitive prosthesis allowing im- mediate implant loading in the maxilla: a clinical report. Int J Oral Maxillofac Implants. 2002 Sep- Oct;17(5):663–70. 11. Pozzi A, Tallarico M, Marchetti M, Scarfo B, Espo- sito M. Computer-guided versus free-hand pla- cement of immediately loaded dental implants: 1-year post-loading results of a multicentre randomised controlled trial. Eur J Oral Implantol. 2014 Autumn;7(3):229–42. 12. Vasak C, Kohal RJ, Lettner S, Rohner D, Zechner W. Clinical and radiological evaluation of a template- guided (Nobel- Guide™) treatment concept. Clin Oral Implants Res. 2014 Jan;25(1):116–23. 13. Vasak C, Watzak G, Gahleitner A, Strbac G, Schem- per M, Zechner W. Computed tomography-based evaluation of template (NobelGuide™)-guided im- plant positions: a prospective radiological study. Clin Oral Implants Res. 2011 Oct;22(10):1157–63. 14. Vasak C, Strbac GD, Huber CD, Lettner S, Gahleitner A, Zechner W. Evaluation of three different valida- tion procedures regarding the accuracy of templa- te-guided implant placement: an in vitro study. Clin Implant Dent Relat Res. 2015 Feb;17(1):142–9. 15. Van Assche N, Vercruyssen M, Coucke W, Teughels W, Jacobs R, Quirynen M. Accuracy of computer- aided implant placement. Clin Oral Implants Res. 2012 Oct;23 Suppl 6:112–23. _references expert article _ chirurgia guidata