James Vlassis

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The purpose of this study was to examine the healing potential and re-osseointegration in peri-implant infection defects adjacent to various implant surfaces. In 7 female Beagle dogs, a total of 41 titanium oral implants (ITI, Straumann, Waldenburg; Switzerland) with a sink depth of 6 mm (diameter 2.8 mm) were placed transmucosally. Four different surface(More)
A classification and repair system is presented for the management of sinus membrane perforations, based upon membrane location and severity. The results of 19 consecutively treated cases are presented. All cases of sinus membrane perforation were appropriately managed, resulting in successful sinus augmentation therapy, implant placement, and restoration.(More)
BACKGROUND The ability to utilize shorter implants in the reconstruction of the posterior maxilla would, theoretically, simplify therapy by lessening the need for augmentation surgery. The purpose of this retrospective study was to assess the success and failure rates of < or = 9 mm or shorter implants in the maxillary posterior regions restored with(More)
A classification system for sinus membrane perforations encountered during a sinus augmentation procedure is presented. Five of the perforations are discussed, as are the therapeutic options for their repair. Class I and Class II perforations are most easily repaired, while Class IV is the most difficult to successfully treat. In addition, the effect of the(More)
Two hundred twenty-two sinus augmentation procedures were performed using one of three techniques: crestal approach; lateral approach; or lateral approach with simultaneous implant placement. Forty-one of these sinus augmentation procedures were performed in conjunction with buccolingual ridge augmentation. Of the 222 procedures, 217 (97.7%) were(More)
PURPOSE To evaluate the success and failure rates over time of ITI implants placed in 3 private practices and used in a variety of clinical situations. MATERIALS AND METHODS ITI solid-screw implants (n = 5,526) were placed in 3 private practices and restored by a variety of clinicians. Numerous clinical scenarios were treated with the implants, which were(More)
PURPOSE The long-term success of implants functioning in sinuses augmented with a variety of materials were evaluated in 2 private practices. MATERIALS Treatment outcomes of 1814 augmented sinuses, and subsequent placement of 1633 implants into 763 augmented sinuses, were assessed through clinical and radiographic examinations in 2 private practices.(More)
The anatomical restrictions for rehabilitation of the atrophic posterior maxilla limit treatment options for many patients. The learning objective of this article is the discussion of these limitations and presentation of a clinical report of the surgical technique and histologic findings of a sinus lift procedure which facilitates the placement of(More)
The purpose of this study was to compare clinical, radiographic and histological differences around titanium oral implants loaded with either acrylic-veneered metal or ceramo-metal fixed prostheses. Five beagle dogs were used in this investigation. At the beginning of the study, all mandibular premolars and first molars were extracted. After 3 months of(More)
The success of endosseous dental implants is enhanced when sufficient bone is present to stabilize the implant. If adequate bone for full coverage of the implant is not possible, then the use of guided bone regeneration to regenerate the missing bone has been shown to be a predictable solution. Defect size can often limit the amount of soft tissue available(More)