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ePaper created 2017-04-20, 12:07:17 | version 1.38.0
implants_one-piece implants was very fortunate and still today many dentists, even university Professors, acknowledge that osseo-integration is the fundamental theory of implantology. _Other proposed techniques For some time now oral rehabilitation with two component implants in immediate loading have been proposed. In other words, this tech- nique requires the use of the same implants as in two-phase surgery, strengthened and stabilized however by a bar and loaded immediately. _Peri-implant bone reabsorption It is worth briely remembering what expe- rience and research have demonstrated; that with time we often see alveolar bone reabsorp- tion around the implant collar, on the level of the alveolar edge and this generally takes place in deferred loading implantology (Fig. 12).11 This kind of reabsorption has a “conical” morphology and is considered acceptable within the limits of 1,5-2 mm in the irst year, and of 0,2 mm for ev- ery successive year. Anything over those limits is considered pathological and one of the causes of the loss of the implant. _Personal case studies Our case studies are summarized in table 1. They involve 47 patients in bone class D2-D3 ac- cording to Misch-Adell-Branemark, 30 male and 17 female, with an average age of 52, divided into two groups: the irst involves 21 subjects with 61 implants, rehabilitated using a two pha- se technique while the second group includes 26 patients, rehabilitated using the classic technique in immediate loading, with needles and self-tap- ping screws, solidarized and strengthened with a welded bar, for a total of 218 mono-structural, one-piece emerging implants. Each patient was studied with a TC dental- -scan before surgery and checked with a digital orthopantomography 12-24 months later. In 12 cases the post-surgery study, was completed by means of a TC Dental- scan. While studying the post-surgery orthopan- tomograms carefully, our attention was caught Ryc. 5Aa Ryc. 5Ab Ryc. 5Ac Ryc. 5Ba 48 4_2016 48 implants Fig. 5a_Mondani’s Intraoral Welder, the electrodes are positioned on the surface of the abutment and the bar which, following sin-crystallization, will become a single entity. b. Several models of intraoral welders. Ryc. 5Bb