Slide Pubblicazioni Scientifiche

EDI Journal – December 2016 – First report of a two-year retrospective study with a newly developed bone-level implant system Peri-implant health and peri-implant bone stability after immediate implant placement

Written by C-Tech Implants | Forniture e Impianti Dentali on . Posted in Scientific Publications

International Journal of Implant Dentistry • December 2016

First report of a two-year retrospective study with a newly developed bone-level implant system Peri-implant health and peri-implant bone stability after immediate implant placement

DR-Medic Stom. Henriette Lerner HL DENTCLINIC, Dr. Jonas Lorenz University Hospital Frankfurt · Department of oral, maxillofacial and plastic surgery, Professor Robert A. Sader Goethe-Universität Frankfurt am Main · Center of Stomatology and Dr. Shahram Ghanaati Goethe University of Frankfurt/Main; Universitätsmedizin der Johannes Gutenberg-Universität Mainz · Department for Oral, Craniomaxillofacial and Facial Plastic Surgery; Institute of Pathology

Dental implants have become a reliable and predictable treatment modality to replace missing teeth and retain dentures in edentulous patients. They can restore the oral health, form, function, mastication, articulation and aesthetics of the stomatognathic system with multi-year success rates of more than 90 per cent for implants in fully edentulous [1,2] or partially edentulous patients [3-6]. Variations in implant success have been found dependent upon surgical technique, loading protocol, implant localisation and bone quality –for example, lower success rates have been reported for maxillary implants than for mandibular implants [7,8]

In the past few decades, research on dental implants has led to a broad modification of the surgical and prosthetic protocols.
For the surface of dental implants there is a clear consensus regarding the superiority of roughened/micro-textured surfaces.

Other ways to increase the implant surface include the thread design, implant length and implant diameter. The implant design should incorporate features that best transform tensile and shear forces during mastication and minimize undesirable force components.
Also essential for the long-term stability of peri-implant bone tissue and an aesthetically and functionally sufficient dental implant is the stability of the implant/abutment connection, to prevent implant fractures and screw loosening and to keep the peri-implant bone level stable.
A space or micro-gap between the implant and abutment is unavoidable with a two-piece design; however, a smaller micro-gap can also sometimes be found in designs with platform switching and Morse-tapered conical connectors, used to transfer the micro-gap facing the implant axis and reduce micro-movement. This can reduce the propulsion of sulcus fluid and, consequently, crestal bone loss, even with implants inserted below the alveolar crest (subcrestally).

The aim of the present retrospective study was to describe the clinical and radiological results of a new implant system with a grit-blasted and acid-etched surface topography and a Morse-locking conical implant/abutment connection. Implants were inserted in fresh and intact extraction sockets of maxillary and mandibular non-salvageable teeth and were followed up clinically and radiologically after a mean loading time of two years. Special emphasis was placed on the maintenance of peri-implant health and the stability of peri-implant bone level.


 

References

1. Albrektsson T, Dahl E, Enbom L, Engevall S, Engquist B, et al. (1988) Osseointegrated oral implants. A Swedish multicenter study of 8139 consecutively inserted nobelpharma implants. J Periodontol 59(5):287-296.

2. Spiekermann H, Jansen VK, Richter EJ (1995) A 10-year follow-up study of IMZ and TPS implants in the edentulous mandible using bar-retained overdentures. Int J Oral
Maxillofac Implants 10(2):231-243.

3. Nevins M, Langer B (1993) The successful application of osseointegrated implants to the posterior jaw: a long-term retrospective study. Int J Oral Maxillofac Implants 8(4):428-432.

4. Henry PJ, Laney WR, Jemt T, Harris D, Krogh PH, et al. (1996) Osseointegrated implants for single-tooth replacement: a prospective 5-year multicenter study. Int J Oral Maxillofac Implants 11(4):450-455.

5. Schmitt A, Zarb GA (1993) The longitudinal clinical effectiveness of osseointegrated dental implants for single-tooth replacement. Int J Prosthodont 6(2):197-202.

6. Fugazzotto PA, Gulbransen HJ, Wheeler SL, Lindsay JA (1993) The use of IMZ osseointegrated implants in partially and completely edentulous patients: success and failure rates of 2,023 implant cylinders up to 60+ months in function. Int J Oral Maxillofac Implants 8(6):617-621.

7. Misch CE (1990) Density of bone: effect on treatment plans, surgical approach, healing, and progressive boen loading. Int J Oral Implantol 6(2):23-31.

8. Albrektsson T, Lekholm U (1989) Osseointegration: current state of the art. Dent Clin North Am 33 (4):537-554.

9. Adell R, Lekholm U, Brånemark PI (1985) Surgical procedures. In: Brånemark PI, Zarb G, Albrektsson T (Eds.), Tissue Integrated Prostheses: Surgical Procedures, Quintessence Publishing Co, Chicago, USA, pp. 223-225.

10. Kohal RJ, LaRosa M, Patrick D, Hürzeler MB, Caffesse RG (1999) Clinical and histologic evaluation of submerged and nonsubmerged hydroxyapatite-coated im-plants: a preliminary study in dogs. Int J Oral Maxillofac Implants 14(6):824-834.

11. Evian CI, Kessler L, Axler J (1997) One-stage surgery with a nonsubmerged implant system. Compend Contin Educ Dent 18(11):1091-1094,1096-1098.

12. Ericsson I, Nilner K, Klinge B, Glantz PO (1996) Radio-graphical and histological characteristics of submerged and nonsubmerged titanium implants. An experimental study in the Labrador dog. Clin Oral Implants Res 7(1):20-26.

13. Chrcanovic BR, Albrektsson T, Wennerberg A (2015) Dental implants inserted in fresh extraction sockets versus healed sites: a systematic review and meta-analysis. J Dent 43(1):16-41.

14. Weiss CM, Weiss A, Rosenlicht J (2001) Root form implants. Treatment of total mandibular edentulism diagnosed for an overdenture. In: Weiss CM, Weiss A, (Eds.), Principles and Practice of Implant Dentistry, Mosby, St Louis, USA, pp. 147-168.

15. Fickl S, Zuhr O, Wachtel H, Stappert CF, Stein JM, et al. (2008) Dimensional changes of the alveolar ridge contour after different socket preservation techniques. J Clin Peri-odontol 35(10):906-913.

16. Vignoletti F, Matesanz P, Rodrigo D, Figuero E, Martin C, et al. (2012) Surgical protocols for ridge preservation after tooth extraction. A systematic review. Clin Oral Implants Res 23(5):22-38.

17. Lekovic V, Camargo PM, Klokkevold PR, Weinlaender M, Kenney EB, et al. (1998) Preservation of alveolar bone in extraction sockets using bioabsorbable membranes. J Periodontol 69(9):1044-1049.

18. Becker W, Becker B, Polizzi G, Bergstrom C (1994) Autogenous bone grafting of defects adjacent to implants placed into immediate extraction sockets in patients: a prospective study. Int J Oral Maxillofac Implants 9(4):389-396.

19. Artzi Z, Tal H, Dayan D (2001) Porous bovine bone mineral in healing of human extraction sockets: 2. Histo-chemical observations at 9 months. J Periodontol 72(2):152-159.

20. Iasella JM, Greenwell H, Miller RL, Hill M, Drisko C (2003) Ridge preservation with freeze-dried bone allograft and a collagen membrane compared to extraction alone for implant site development: a clinical and histologic study in humans. J Periodontol 74(7):990-999.

21. Araújo MG, Lindhe J (2005) Dimensional ridge alterations following tooth extraction. An experimental study in the dog. J Clin Periodontol 32(2):212-218.

22. Evans CD, Chen ST (2008) Esthetic outcomes of immediate implant placements. Clin Oral Implants Res 19(1):73-80.

23. Chen ST, Darby IB, Reynolds EC, Clement JG (2009) immediate implant placement postextraction without flap elevation. J Periodontol 80(1):163-172.

24. Lang NP, Pun L, Lau KY, Li KY, Wong MC (2012) A systematic review on survival and success rates of implants placed immediately into fresh extraction sockets after at least 1 year. Clin Oral Implants Res 23(5):39-66.

25. Pagni G, Pellegrini G, Giannobile WV, Rasperini G (2012) Postextraction alveolar ridge preservation: biological basis and treatments. Int J Dent 2012:151030.

26. Tavarez RR, Calixto AM, Maia Filho EM, Bandeca MC, Firoozmand LM, et al. (2014) Atraumatic extraction, implant placement and immediate provisionalization. J Contemp Dent Pract 15(4):513-517.

27. Misch CE (1999) Implant design considerations for the posterior regions of the mouth. Implant Dent 8(4):376-386.

28. Binon PP (2000) Implants and components: entering the new millennium. Int J Oral Maxillofac Implants 15(1):76-94.

29. Trisi P, Rao W, Rebaudi A (1999) A histometric comparison of smooth and rough titanium implants in human low-density jawbone. Int J Oral Maxillofac Implants 14(5):689-698.

30. Steigenga JT, Shammari KF, Nociti FH, Misch CE, Wang HL (2003) Dental implant design and its relationship to long-term implant success. Implant Dent 12(4):306-317.

31. Niznick G (2000) Achieving Osseointegration in soft bone: The search for improved results. Oral Health 90:27-32.

32. O’Sullivan D, Sennerby L, Meredith N (2000) Measurements comparing the initial stability of five designs of dental implants: a human cadaver study. Clin Implant Dent Relat Res 2(2):85-92.

33. Sykaras N, Iacopino AM, Marker VA, Triplett RG, Woody RD (2000) Implant materials, designs, and surface topographies: their effect on osseointegration. A literature review. Int J Oral Maxillofac Implants 15(5):675-690.

34. Canullo L, Penarrocha OD, Soldini C, Mazzocco F, Penarrocha M (2015) Microbiological assessment of the implant-abutment interface in different connections: cross-sectional study after 5 years of functional loading. Clin Oral Implants Res 26(4):426-434.

35. Pozzi A, Tallarico M, Moy PK (2014) Three-year post-loading results of a randomised, con-trolled, split-mouth trial comparing implants with different prosthetic interfaces and design in partially posterior edentulous mandibles. Eur J Oral Implantol 7(1):47-61.

36. Ghanaati S, Lorenz J, Obreja K, Choukroun J, Landes C, et al. (2014) Nanocrystalline hydroxyl apatite-based material already contributes to implant stability after 3 months: a clinical and radiologic 3-year followup investigation. J Oral Implantol 40(1):103-109.

37. Ghanaati S, Barbeck M, Lorenz J, Stuebinger S, Seitz O (2013) Synthetic bone substitute material comparable with xeno-geneic material for bone tissue regeneration in oral cancer patients: First and preliminary histological, histomorpho-metrical and clinical results. Ann Maxillofac Surg 3(2):126-138.

38. Sailer I, Zembic A, Jung RE, Siegenthaler D, Holderegger C (2009) Randomized controlled clinical trial of customized zirconia and titanium implant abutments for canine and posterior single-tooth implant reconstructions: preliminary results at 1 year of function. Clinical Oral Implants Research 20(3):219-225.

39. Brägger U, Bürgin WB, Hämmerle CH, Lang NP (1997) Associations between clinical parameters assessed around implants and teeth. Clinical Oral Implants Research 8(5):412-421.

40. Berglundh T, Lindhe J, Ericsson I, Marinello CP, Liljenberg B, et al. (1991) The soft tissue barrier at implants and teeth. Clinical Oral Implants Research 2(2):81-90.

41. Berglundh T, Lindhe J, Jonsson K, Ericsson I (1994) The topography of the vascular systems in the periodontal and peri-implant tissues in the dog. Journal of Clinical Periodontology 21(3):189-193.

42. Moon IS, Berglundh T, Abrahamsson I, Linder E, Lindhe J (1999) The barrier between the keratinized mucosa and the dental implant. An experimental study in the dog. Journal of Clinical Periodontology 26(10):658-663.

43. Lindhe J, Berglundh T (1998) The interface between the mucosa and the implant. Periodontology 2000 17: 47-54.

44. Rieder D, Eggert J, Krafft T, Weber HP, Wichmann MG (2014) Impact of placement and restoration timing on single-implant esthetic outcome-a randomized clinical trial. Clin Oral Implants Res 27(2):e80-e86.

45. Romanos GE, Aydin E, Locher K, Nentwig GH (2014): Immediate vs. delayed loading in the posterior mandible: a split-mouth study with up to 15 years of follow-up. Clin Oral Implants Res 27(2):e74-e79.

46. Wagenberg B, Froum SJ (2014) Long-Term Bone Stability around 312 Rough-Surfaced Immediately Placed Implants with 2-12-Year Follow-Up. Clin Implant Dent Relat Res 17(4):658-666.

47. Javed F, Ahmed HB, Crespi R, Romanos GE (2013) Role of primary stability for successful osseointegration of dental implants: Factors of influence and evaluation. Interv Med Appl Sci 5(4):162-167.

48. Calvo GJL, Gomez MG, Aguilar SA, Mate SVJE, Abboud M (2014) Bone remodeling at implants with different configurations and placed immediately at different depth into extraction sockets. Experimental study in dogs. Clin Oral Implants Res 26(5):507-515.

49. Javed F, Almas K, Crespi R, Romanos GE (2011) Implant surface morphology and primary stability: is there a connection? Implant Dent 20(1):40-46.

50. Berberi A, Tehini G, Rifai K, Bou NEF, El ZN (2014) In vitro evaluation of leakage at implant-abutment connection of three implant systems having the same prosthetic interface using rhodamine B. Int J Dent 2014:351263.

Prefooter ENG