Implants

38 I I industry report _ Full arch rehabilitation implants1_2013 _The concept of having only four SHORT® implants for the support of a fixed full arch non-metallic prosthesis (Trinia™), a CAD/CAM fiber reinforced resin, was first executed in 2010. The clinically based results performed in three different implant den- tistry centres are showing clinical success because of Trinia’s inherent mechanical and clinical properties. Another factor were the 360 degrees of universal abutment position- ing provided by the Implants Locking Taper connection (Bicon®), which gives the oppor- tunity to use the Trinia™ prosthesis to orient and seat the abutments in the well of the im- plants. The Trinia framework may be covered with either customised poly-ceramic indirect composite material or by conventional den- ture teeth and resin. We want to show how short implants have been successfully used to restore se- verely atrophic mandibles without the use of difficult bone augmentation procedures and complicated prosthetic suprastructures in the past decade. _Material and methods Bicon Dental implants (Bicon LLC, Boston, MA, USA) were used for the reconstruction of the case, combined with a CAD/CAM fi- ber reinforced resin framework (Trinia™) and conventional denture teeth and resin pros- thesis. Bicon implants can be characterised by their special macro-structure, including a root-shaped design with wide fins called plateaus, by a sloping shoulder and by a well which holds the abutment post by means of a Locking Taper connection.1 The plateaus are of particular importance for the biomechanical performance, allowing SHORT® implants with a wide diameter to be used in any position in the oral cavity. Their insertion into the osteotomy, which has been prepared using atraumatic drills rotating at 50rpm, is executed by using mechanical pressure. The countless micro-retentions cre- atedonthesurfaceofthefineedgeswiththe wallsoftheosteotomyensureprimarystabil- ity of the implant in the implant site. Further- more, the wide spaces between the plateaus avoid vertical compression on the bone walls and rapidly collect the clotted blood, allow- ing rapid bone formation without the clas- Fixedfullarchmetal- freeprosthesisonfour SHORT®implants Author_Prof. Mauro Marincola, Dr Vincent J. Morgan, Angelo Perpetuini & Stefano Lapucci Fig 1 Fig 2 Fig 3 Fig 4 Fig 5