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ePaper created 2015-11-17, 15:11:47 | version 1.38.0
12 Volume 1 | Issue 1/2015 Journal of Oral Science & Rehabilitation formed on the rougher parts of the surface. Overall,the evaluation ofboththe post-extrac- tionsocketsandtheSEMimagesoftheimplant surfaces found that most of the dental plaque remained adhered to the removed implant sur- faces. New dental implants were immediately placedatatorqueof36 ± 16 N cm.Onlytwoim- plants were placed at a torque of < 25 N cm. Two short implants of 5.5 mm × 5.5mm and 5.5 mm × 7.5 mm were placed. Three implants were 8.5 mm in length and had a diameter of 4.0, 4.5 and 5.5 mm, respectively. The rest of the implants were 10.0–13.0 mm in length and 3.75–5.0 mm in diameter, respectively. The nine implants gave support to a single crown, four partial fixed prostheses and four complete fixed prostheses. All of the partial and complete fixed prostheses were screw re- tained. The implant loading was immediate for the single crown and delayedforthe partialand complete fixed prostheses. The implants were followed for 50 ± 2 months after placement (range: 48–52 months) and 43 ± 3 months after loading (range:40–48months).Noimplantfailurewas registered during this period. The mesial bone loss was 1.0 ± 0.8 mm and the distal bone loss was 1.0 ± 0.8 mm. The marginal bone loss was measured on radiographs taken after 40 ± 6 months of implant loading. Figure 4 shows a case that was treated according to the de- scribed protocol and followed for four years after implant placement. P eriim pla n titis : I m m edi ate i mplant re place me nt Fig. 4Fig. 4 (a) Preoperative panoramic radiograph showing the presence of bone resorption around the dental implants in position # 34. (b) The immediate placement of a new dental implant. (c) The provisional prosthesis. (d) The provisional prosthesis one year after seating. (e) The seating of the definitive prosthesis. (f) The clinical situation four years after implant placement. a c e b d f