Publications by authors named "Edgard S El Chaar"

Introduction: Free autogenous graft was the gold standard to increase the keratinized mucosa (KM) and vestibular depth. The major downfall of this technique is the postoperative morbidity at the donor site. The purpose of this case report is to demonstrate a modified technique using acellular dermal matrix (ADM) to increase the KM around implants to achieve faster healing with less postoperative morbidity.

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Purpose: The present, randomized, controlled clinical trial compared the histologic and histomorphometric results from maxillary sinus augmentation with either biphasic calcium phosphate (BCP) (60% hydroxyapatite and 40% β-tricalcium phosphate) or autogenous bone (AB) as bone-grafting materials.

Material And Methods: Ten patients received bilateral sinus elevation surgery with intraoral AB chips (control group) on one side and BCP (test group) on the contralateral side. After a healing period of 6 to 8 months, implant sites were created and trephine cores were harvested for histological and histomorphometric analysis of the grafted areas.

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Objective: The purpose of the current study is to assess the thickness of the maxillary sinus lateral wall in dentate and edentulous patients using cone beam computed tomography (CBCT). This study also provides information about the diameter, prevalence, and course of the posterior superior alveolar artery (PSAA), and its relation to the maxillary sinus floor.

Materials And Methods: Four hundred and thirty CBCT scans of the maxillofacial complex (860 maxillary sinuses) were reviewed.

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Introduction: A case series was used to evaluate the efficacy and predictability of a ceramic matrix in a putty-like collagen carrier in immediate extraction sockets.

Methods: A single failing tooth was atraumatically extracted from each of 10 subjects. The sockets were debrided and grafted with ceramic matrix in a putty-like collagen carrier (15% hydroxyapatite, 85% β-tricalcium phosphate complex).

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Purpose: To evaluate its efficacy and predictability in immediate extraction sockets, this case series used demineralized bone matrix in a puttylike carrier (DBM putty) with and without mineralized bone chips. Each preparation was made from the long bones of the same tissue donor; the only excipient material was water.

Material And Methods: A single failing tooth was atraumatically extracted from each study subject, and the socket was debrided.

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Immediate implant placement into extraction sockets has been widely reported in the dental literature, but few studies have evaluated immediate loading of such implants. This retrospective study evaluated 206 implants placed into fresh extraction sites using a flapless technique, followed by immediate provisionalization with nonoccluding single-tooth restorations and definitive restoration within 2 weeks. Cumulative survival and success rates were 98.

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The sequelae of socket collapse and localized ridge resorption after tooth extraction in the posterior maxilla can adversely affect esthetics, function, and future implant placement. Immediate grafting of extraction sockets may help to preserve natural ridge contours; but lack of available soft tissue can prevent primary closure or exert tension that hampers graft turnover and compromises the visible gingival scallop. Exposed barrier membranes may also be susceptible to bacterial infection that may lead to secondary graft failure.

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This case report concerns the loss of osseous tissue around two hydroxyapatite (HA) Biovent implants, placed in 1993, at sites #30 and #31. The implant in site #31 was positioned with a distal angle, resulting in an ill-fitting prosthesis. This permitted bacterial colonization to set up a periimplantitis.

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