Faculty Bibliography

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. Intact sockets were grafted with DBM putty (n = 6), and sockets with buccal defects were grafted with DBM putty with bone chips (n = 6). A bovine pericardium membrane was draped over the graft site, and tension-free primary closure was obtained. After 6 months of healing, a trephine biopsy was taken from the center of each graft, and then, a dental implant was placed. Two subjects were withdrawn, and histologic data could not be obtained from 2 other patients. RESULTS:: Mean new bone fill was 40.28% for DBM putty (n = 5) and 44.60% for DBM putty with bone chips (n = 4). CONCLUSIONS:: Both preparations maintained ridge dimensions and, despite ongoing bone turnover, produced adequate mineralized tissue that enabled implant placement at 6 months. This finding warrants further research.

Dental implant education is increasingly becoming part of predoctoral dental curricula. New York University College of Dentistry has developed a pilot dental implant program that trains students in implant restorations for single-tooth restorations and mandibular overdentures. Fourth-year students have the option of applying for an implant honors program, which can include surgically placing posterior implants. Eight students were selected for the implant honors program for the 2010-11 academic year. Seven of the eight students fulfilled the didactic and simulation requirements, performing forty-seven surgeries and placing fifty-two implants. Surgical protocol events were recorded: three implants did not achieve 35 Ncm torque at placement, and ten implants required a change in direction following the initial 8 mm pilot drill. All direction changes were successfully performed and resulted in implant placements. This pilot program suggests that predoctoral dental students can be trained to successfully place posterior implants, which are becoming the standard of care.

Abstract Immediate implant placement into extraction sockets has been widely reported in the dental literature, but few studies have evaluated the immediate loading of such implants. In this retrospective study, we evaluated 235 implants placed into fresh extraction sites utilizing a flapless technique, followed by immediate provisionalization with non-functional single-tooth restorations, and definitive restoration within 2 weeks. Cumulative survival and success rates were 98.8% (mean follow-up = 23.1 months). Periodontitis did not adversely influence the outcome. Within the limitations of this study, immediate implant placement and restoration followed by definitive loading within 2 weeks achieved outcomes comparable to those historically reported for delayed implants

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 98.77% (mean follow-up, 23.1 months). Periodontitis did not influence the outcome adversely. Within the limitations of this study, immediate implant placement and restoration, followed by definitive loading within 2 weeks, achieved outcomes comparable to those historically reported for delayed implants. (Int J Periodontics Restorative Dent 2011;31:409-419.)

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. The rotated pedicle palatal connective tissue flap is a relatively simple technique for soft tissue coverage of grafted sockets without excessive tension. This article presents the technique

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. The rough HA coating on the implants further exacerbated the resultant bone loss. In an attempt to rectify the pathology, surgical debridement, antibiotic therapy, bone grafting, and guided tissue regeneration with a barrier membrane were utilized. This case report documents a successful partial repair of osseous housing around these implants

The placement of endosseous dental implants is often hampered by unfavorable anatomy of the alveolar bone. Guided bone regeneration and bone grafts have been used to reconstruct deficient alveolar ridges in preparation for dental implants. A case report is presented to illustrate two approaches to successful management of different alveolar defects