Course Objectives (2 CE Credits)
Implant restorations are not a one-size-fits-all proposition. For long-term health and stability, each should be carefully customized to address the presenting clinical conditions. Serving as the interface between implant and restoration, an implant abutment customized with state-of-the-art digital technology can go a long way toward optimizing those restorative conditions. Upon reviewing the discussion between Glidewell Laboratories' Dr. Bradley Bockhorst and Dzevad Ceranic, CDT, readers should be able to demonstrate an understanding of how this technology is used in implant abutment design, including the following considerations:
- Abutment materials
- Transgingival design options
- Emergence profile
- Angle correction
- Crown support and retention
Implant abutments custom-designed and milled with today's digital CAD/CAM techniques offer several clinical advantages over prefabricated abutments. Utilizing anterior and posterior case examples, Glidewell Laboratories' Dr. Bradley Bockhorst and Dzevad Ceranic, CDT, discuss the parameters for ensuring proper margins, angle correction, crown support, emergence profile and more.
CAUTION: When viewing the techniques, procedures, theories and materials that are presented, you must make your own decisions about specific treatment for patients and exercise personal professional judgment regarding the need for further clinical testing or education and your own clinical expertise before trying to implement new procedures.
- Adell R, Eriksson B, Lekholm U, Bränemark PI, Jemt T. Long-term follow-up study of osseointegrated implants in the treatment of totally edentulous jaws. Int J Oral Maxillofac Implants. 1990 Winter;5(4):347-59.
- Spiekermann H, Jansen VK, Richter EJ. A 10-year follow-up study of IMZ and TPS implants in the edentulous mandible using bar-retained overdentures. Int J Oral Maxillofac Implants. 1995 Mar-Apr;10(2):231-43.
- Daftary F. Dentoalveolar morphology: evaluation of natural root form versus cylindrical implant fixtures. Pract Periodontics Aesthet Dent. 1997 May;9(4):469-77; quiz 478.
- King KO. Implant abutment emergence profile: key to esthetics. J Oral Implantol. 1996;22(1):27-30.
- Lazzara R. Esthetic excellence with implant abutments. Dent Econ. 1993 Mar;83(3):83-4, 89.
- Salinas TJ, Sadan A. Establishing soft tissue integration with natural tooth-shaped abutments. Pract Periodontics Aesthet Dent. 1998 Jan-Feb;10(1):35-42; quiz 44.
- Su H, Gonzalez-Martin O, Weisgold A, Lee E. Considerations of implant abutment and crown contour: critical contour and subcritical contour. Int J Periodontics Restorative Dent. 2010 Aug;30(4):335-43.
- Redemagni M, Cremonesi S, Garlini G, Maiorana C. Soft tissue stability with immediate implants and concave abutments. Eur J Esthet Dent. 2009 Winter;4(4):328-37.
- Chik FF, Chan WK, Pow EHN, Chow TW. Management of non-restorable maxillary premolars with immediate implants, immediate provisional restorations, and definitive screw-retained CAD/CAM zirconia abutment crowns: a report of five cases. Hong Kong Dent J. 2009;6:31-8.
- Goodacre CJ, Bernal GB, Rungcharassaeng K. Clinical complications with implants and implant prostheses. J Prosthet Dent. 2003;90:121-32.
- Wu T, Liao W, Dai N, Tang C. Design of a custom angled abutment for dental implants using computer-aided design and nonlinear finite element analysis. J Biomech. 2010 Jul 20;43(10):1941-6.
- Emms M, Tredwin CJ, Setchell DJ, Moles DR. The effects of abutment wall height, platform size, and screw access channel filling method on resistance to dislodgement of cement-retained, implant-supported restorations. J Prosthodont. 2007 Jan-Feb;16(1):3-9.