IM0310

30 I I study _ design and surfaces implants3_2010 tulous.Fiveimplantsfailed(3.47%),twointhemax- illa (2.81%) and three in the mandible (4.10%). _Materials and Methods Thestudyconsistsof144consequentlyplaced 3.50 mm hydroxyapatite-coated cylinder shape implants (Smooth-Fit, Hi-Tec Implants, Herzlia, Israel). Titanium Plasma Spray Coated cylinder shape Implants (Smooth-Fit, Hi-Tec Implants, Herzlia, Israel). 3.75 and 5.00 uncoated Self-Tapping Thread Titanium Implants (Self Thread, Hi-Tec Implants, Herzlia, Israel). Thecoatedfixtureswere madeofsurgicaltitaniumalloy,coatedwith50mi- crons layer of hydroxyapatite or titanium plasma spray and have a 1 mm polished (uncoated) collar fromtheneckoftheimplant.Theuncoatedthread implants were made of surgical titanium alloy with acid etched surface. Various length implants were used. The patient underwent routine medical, den- tal and radiographic assessment (including panoramic radiography) and was evaluated to determine whether the procedure was feasible and if positive, the treatment procedure was planned. Each patient was counseled concern- ing the nature of the treatment, and a compre- hensive consent form was signed. Surgicalplacementoftheimplantswasbased on the following procedure: The patient was placed under local or general anesthesia. De- pending upon the site of the intended procedur, a mid-crestal, incision was made, and a flap was lifted exposing the under lying bone. An os- teotomy was performed with internal irrigated drills using sterile physiological water. The im- plant was inserted into the prepared site and the flaps were closed by sutures.Duringthisfour year period surgeries were performed on 44 pa- tients: 26 women and 18 men. Stage II was performed under local anesthetic 3–6 months after Stage I. This entailed opening a flap, exposing the cover screw and replacing it with a Titanium 3 mm or 5 mmHealingCap(Hi-TecImplants,Herzlia,Israel). Fig. 3a_Buccal defect connecting to the socket of first premolar with 2.0 mm remaining of buccal wall. Fig. 3b_Placing 4.2 mm Tapered Self Thread Implant. Fig. 3c_Complete closure after augmentation of buccal defect and socket. Fig. 3d_Final restoration with Zirconium Abutment. Distribution of implants regarding type of endulism & jaw Jaw Complete edentulous Multiple missing teeth Single missing teeth Total Maxilla 20 55 5 80 Mandible 30 30 4 64 Total 50 85 9 144 Distribution of implants by types of anesthesia Anesthetic General Local Total Maxilla 33 47 80 Mandible 10 54 64 Fig. 3a Fig. 3b Fig. 3c Fig. 3d Tab. 2 Tab. 3 Distributionofimplantsregardingsexandjaw Jaw Female Male Total Maxilla 44 36 80 Mandible 29 35 64 Total 73 71 144 Tab. 1