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ABSTRACT: The aim of this report is to investigate the efficacy of the sandwich technique for vertical bone augmentation in the atrophic posterior mandible of three patients through clinical and histologic studies. A complete osteotomy was conducted using a piezoelectric device to create segmented bone in the atrophic edentulous area and the segmented bone was elevated 6 mm vertically. Interpositional mineral allograft materials were inserted in the space between the basal bone and the segmented bone. After a mean 5-month healing period, bone biopsies were taken in the grafted areas and implants were placed. Six millimeters of vertical bone gain was achieved in all patients by using the sandwich technique. Histomorphometric analysis of the biopsy specimens showed favorable new bone formation without inflammation.
The International journal of periodontics & restorative dentistry 08/2010; 30(4):383-91. · 1.20 Impact Factor
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ABSTRACT: This article reports the surgical procedure of a transalveolar approach for sinus floor elevation using piezoelectric surgery without a mallet, called piezoelectric internal sinus elevation (PISE) technique. PISE is the modified technique of the osteotome-mediated sinus floor elevation. Osteotome-mediated sinus floor elevation uses a mallet to break the sinus floor and to push sinus membrane up. Using this technique might possibly bring positional vertigo to the patient. PISE technique does not use a mallet during the procedure to break the sinus floor and to elevate the sinus membrane; therefore, it can reduce the possibility of postoperative positional vertigo.
Implant dentistry 12/2009; 18(6):458-63. · 1.51 Impact Factor
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ABSTRACT: The possibility of using lasers in the field of dentistry has been a subject of investigation. There are few reports that any laser systems have been used for bony window osteotomy by direct sinus grafting. In this study, erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser of various laser systems was used for 12 sinus bone grafts in ten patients, and the efficiency of the laser was evaluated according to the osteotomy time and the rate of sinus membrane perforation in the clinical results; the mechanism is described. Eight of the 12 procedures were performed by direct sinus grafting with the Er,Cr:YSGG laser without membrane perforation (perforation ratio 33.3%). Operating time for bony window osteotomy with laser alone was 2-7 minutes [3 min 24 s on average; 3.4 +/- 1.4 min (mean +/- standard deviation)], and all the implants placed immediately were successful.
Lasers in Medical Science 03/2009; 24(4):673-7. · 2.00 Impact Factor
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ABSTRACT: Various sinus augmentation procedures, using bone substitutes, have been used to place dental implants in the atrophic posterior maxilla. The aim of this article is to evaluate the possibility of new bone formation in the maxillary sinus without a bone graft.
Ten patients without significant sinus pathosis were selected for this study. The bony window was prepared in the lateral wall using the ultrasonic piezoelectric bone surgery device (Surgybone, Silfradent srl, Sofia, Italy). The sinus membrane was elevated superiorly and implants were placed simultaneously to maintain the space under the sinus membrane for new bone formation. As the methods of sealing the lateral access window of the sinus, patients were divided into 2 groups. Nonresorbable membrane was used to seal the lateral access window of the maxillary sinus after implant placement in 5 cases (group A). Replaceable bony window was used to seal the lateral wall of the sinus in another 5 cases (group B). Computed tomograms were taken immediately before and after surgery, at the uncovering of the implant, and after a 6 month healing period. A bone biopsy was taken on the previous bony window area to evaluate new bone formation.
A total of 21 implants in lengths of 10 to 15 mm (mean, 13 mm) were placed, with an average residual bone height of 5 mm (range, 1-9 mm). All implants remained stable during the study period in clinical evaluations. New bone formation and new sinus floors were found in radiographic and histologic evaluations.
The human study showed the capacity of new bone formation in the maxillary sinus with membrane elevation only and simultaneous implant placement beyond the original sinus floor. New bone formation without additional bone graft in the maxillary sinus is revealed from the clinical, radiographic, and histologic results, but furthermore long-term studies are needed to confirm this.
Implant dentistry 10/2008; 17(3):321-31. · 1.51 Impact Factor
