implants - international magazine of oral implantology

industry report I Figs. 1–12_Radiographic long-term control helps maintain the implant’s bone/soft tissue stability. to another implant or tooth. The sloping shoulder design has been, since 1985, the basis of a sensible biological width and the origin of platform switch- ing. The360degreesofuniversalabutmentposition- ing provides for the extraoral cementation of crowns;theuseofthecementlessandscrewlessIn- tegrated Abutment Crown (IAC™)7 , the intraoral bonding of fixed bridges, which eliminates the need forcutting,indexingandsolderingofbridgeframe- works,multipleandeasyremovalofabutmentsover time; and the slight aesthetic rotational adjust- ments during and prior to the seating of a restora- tion. _Clinical long-term results In the following long-term case description we can observe the stability of the crestal bone around the sloping shoulder of the plateau implant. Clini- cally, the soft tissue contour around the Integrated AbutmentCrownsindicatesahealthyandstableep- ithelial tissue. The single-tooth implant is a viable alternative forsingletoothreplacement.8 Single-toothreplace- ment with endosseous implants has shown satis- factory clinical performance in different jaw loca- tions. Minimal or no crestal bone resorption is consid- ered to be an indicator of the long-term success of implant restorations. Mean crestal bone loss rang- ingfrom0.12mmto0.20hasbeenreportedoneyear after the insertion of single-tooth implant restora- tions.9 After the first year, an additional 0.01 mm to 0.11 mm of annual crestal bone loss has been re- ported on single-tooth implant restorations. Some implants demonstrate no crestal bone loss and/or crestal bone gain after insertion of definitive restorations.10 Crestal bone gain has been documented on im- mediateandearlyloadedimplantswithachemically modifiedsurfaceafteroneyearoffollowup.11 Asix- year prospective study reported that 43.8 % of splinted Morse taper implants experienced some bonegain.12 Crestalbonegainhasbeendocumented around immediately loaded Bicon implants.13 The factors that lead to periimplant bone gain in differ- ent implant designs have not been investigated. It would be beneficial for the dental practitioner to understandwhatfactorsareassociatedwithcrestal bone gain on single-tooth implants after crown in- sertion. Radiographic long-term control also as a clinicalobservationofthesofttissuestructuressur- rounding the abutment emergence profile can pro- I 39implants1_2013 Fig. 3 Fig. 4 Fig. 6Fig. 5 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12