ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Maxillary sinus membrane perforation is the most common complication that occurs with the sinus elevation augmentation procedure. Repair of relatively small (5–10 mm) tears is commonly done using fast resorbing collagen membranes and/or by allowing the sinus membrane to overlap on itself. A technique using a cross-linked type I collagen membrane for predictable repair of large perforations (>10 mm) as well as for circumstances in which no membrane is found is described. This technique has several advantages because of its inherent biologic properties. (Implant Dent 1999;8:29–34)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

In patients with an inadequate amount of bone for implant placement, sinus lift surgery can be performed to restore a sufficient amount of alveolar bone to allow for successful implant placement and subsequent prosthetic reconstruction. In this article, the anatomy and physiology of the maxillary sinus, the mechanisms of bonegrafting, bone grafting material, preoperative evaluation, surgical technique, and the grafting procedure, as well as intraoperative bleeding and postoperative complications, are discussed. (Implant Dent 1999;8:36–46)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

A mixture of demineralized freeze-dried bone and β-tricalcium phosphate was used for bone augmentation in a sinus lift procedure. Hydroxyapatite-coated implants were placed in the newly formed bone-like material before prosthetic reconstruction. A biopsy specimentaken at 16 months showed that the bone-like material was composed of normal lamellar and woven bone. (Implant Dent 1999;8:49–53)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Clinical and experimental studies related to immediate implantation have focused on the significance of the osseous defects and soft tissue status in the achievement of a predictable outcome. This article describes a new three-dimensional classification of the osseous defects around immediate implants and a new grading of the soft tissue. A simplified staging of the severity of horizontal and vertical defects is proposed. Factors affecting the degree of defect are discussed. (Implant Dent 1999;8: 54–60)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Anterior single-tooth replacement is the ultimate challenge facing the prosthodontist or the restorative dentist. Use of dental implants as a modality of treatment has overcome the disadvantages of conventional restorative techniques. Implantologists aim at creating an implant-supported restoration that replicates natural teeth. This article focuses on the different techniques that enhance maximum esthetic outcome of implant-supported anterior tooth restorations at the different stages of treatment. In addition, it discusses one of the problems in esthetic implant dentistry, prosthetic-driven implant placement versus available-bone-driven implant placement. (Implant Dent 1999;8: 61–67)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

A classification system for implant-supported overdentures is proposed in this article. Various types of implant-supported over-dentures have been described in the literature, but there is considerable difference in the function of these designs. For example, an overdenture supported by free-standing implants does not have the retentive elements provided by a bar and, therefore, is less retentive than an overdenture supported by a straight bar. If more than two implants are configured in an arch, and if indirect retention is incorporated into the bar and overdenture design, function is improved over that of a straight-bar design. An-other classification of overdenture is one that receives all of its support from an implant-supported bar with tissue contact to provide a mucosal seal. This tissue con-tact does not provide any actual support. By accepting and using this classification system, the clinician can design an overdenture that is appropriate for the functional requirements of the patient being treated. (Implant Dent 1999; 8:68–73)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Functional stability and the preservation of remaining alveolar bone are primary, and often elusive, goals when restoring the partially edentulous arch. The incorporation of dental implants for the partial support of removable pros-theses offers a practical adjunct in the fulfillment of these objectives. Planning for complex courses of treatment that include dental implants requires close coordination between the surgeon and the restorative dentist. Decisions that deal with type, location, size, number of implant fixtures, and design of the prosthesis are critical. All of these areas must be discussed and established as acceptable to the patient and each clinician before the initiation of treatment. In this report, we present a course of patient treatment in which a removable partial denture is supported by natural remaining teeth in conjunction with osseointegrated implants. (Implant Dent 1999;8: 74–78)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Titanium screws were implanted in rat calvarial defects of identical size using either a laser or bur. The aims of this study were to determine whether the screws were able to osseointegrate in a laser-prepared bone defect and to compare the pattern of bone healing around these screws. The optimal laser settings to produce a 0.7-mm-diameter hole in the rat calvaria were determined. A 0.7-mm-diameter hole was prepared on the left calvaria with the erbium-YAG laser to receive a 1-mmdiameter self-threading titanium screw. Each animal also received a 0.7-mm-diameter hole prepared on the right calvaria with a conventional metal bur, and a1 -mm-diameter self-threading screw implant was placed. Rats were killed humanely either 3 weeks or 3 months after surgery, and the skulls were processed in paraffin wax for histological analysis.Laser-prepared defects: At 3 weeks, the screw was surrounded by vital woven bone. The dura mater was perforated, and cystic change was present in the underlying brain tissue. There was active bone formation adjacent to the screw surface, deposited on a thin zone of necrotic bone. At 3 months, the screws were osseointegrated, and the brain tissue was healed by gliosis. Bur-prepared defects: At 3 weeks, there was extensive remodeling around the prepared defect. The dura mater was intact, and there was no damage to the underlying brain. At 3 months, the screws were successfully osseointegrated with bone adjacent to the screw. Osseointegration of titanium screws can be achieved using an erbium-YAG laser to prepare the implant bed. (Implant Dent 1999;8: 79–85)

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID