implants - international magazine of oral implantology

research I transmission from the crown to the implant and the bone,andalsoforfacilitatingthefabricationofanes- theticallypleasingimplant-supporteddenture.Ways in which abutment design contributes to improved estheticsincludechangesinthelocationofthecrown and changes in the dimension and/or form of the restorative platform. Additionally,featuresoftheabutmentdesigncon- tribute to the health and dimensional stability of the softtissue.Currentattemptstoobjectivelydefineim- plant-restoration esthetics have focused on periim- plantmucosalparameters.13,14 Theintroductionofthe UCLA abutment provided a custom solution for im- plantrestorations.Thisdirect-to-implantrestoration concept provided adaptability. Through waxing and casting, the height, diameter and angulations can be addressed in order to provide a wide range of clinical solutions for problems associated with limited inte- rocclusal distance, interproximal distance, implant angulations and related soft tissue responses.15 The customized implant abutments served as pri- mary telescopes, and the electroformed copings served as secondary telescopes in cases where a re- movable denture with telescopic crowns was used as the attachment. Electroformed gold copings are as- sociatedwithseveraladvantages,inconjunctionwith both removable and fixed restorations. The galvano- forming and electroforming process yielded a pre- cisely-fitted secondary coping for the implant abut- ment with a gap of only 12–30 µm. The gold electro- formedcopingsavesspaceandismadeofhigh-qual- ity material.2-4 Using gold copings for the impression allows for the exact transfer of the form, angulations and position of the inserted customized implant abutments. Withthehelpofthemilledmock-up,thefuturefit of the CAD/CAM fabricated framework can be evalu- ated and necessary changes in the shape of the restorationandocclusioncanbemade.Makingthese changes on the mock-up was easier and less time Figs. 11a & b_A case of fixed implant retained denture for the maxilla full-arch rehabilitation: trial of the mock-up (Fig. 11a) and the milled temporary fixed denture is placed on the abutments (Fig. 11b). I 17implants3_2012 Fig. 11a Fig. 11b Please contact Claudia Jahn c.jahn@oemus-media.de AD [PICTURE:©SUKIYAKI]