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:

There are currently many “bone fill” materials available for procedures associated with the insertions of implants. From sinus lift procedures to the filling of voids left at natural tooth/root extraction sites, the uses of either allograft or xenograft materials require clarification and direction. Lecturers, for the most part, anecdotally advocate the use of one bone fill material for all implant related procedures, at the exclusion of all others.In your opinion, when bone fill materials are indicated, in conjunction with or prior to implant placement, are there preferences for the use of different bone fill materials in different implant-related situations? And, do you have a preference of one or two or more bone fill materials that you would advocate as directives to other implant clinicians? (Where appropriate, please include the name of the manufacturer and the location).

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:

It has become increasingly common for controlled diabetic patients to be considered as candidates for dental implants. This study reports on the results of placing implants in 34 patients with diabetes who were treated with 227 Brånemark implants. At the time of second-stage surgery, 214 of the implants had osseointegrated, a survival rate of 94.3%. Only one failure was identified among the 177 implants followed through final restoration, a clinical survival rate of 99.9%. Screening for diabetes and trying to ensure that implant candidates are in metabolic control are recommended to increase the chances of successful osseointegration. Antibiotic protection and avoidance of smoking should also be considered.

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Recombinant human bone marphogenetic protein (rhBMP-2) has been used as a bone substitute. This article describes the rhBMP-2 structure, mechanisms of action, carriers, advantages, safety, and recent clinical studies relevant to dentistry.

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

Resorbable membranes are often not stable enough for complete corrections of deep periimplant bony defects. Nonresorbable polytetrafluoroethylene membranes require removal after osseous healing. In this study the use of titanium foils for reconstruction of deficient alveolar ridge structures around dental implants is described. The advantages and disadvantages of the titanium foil–guided bone regeneration technique is discussed.Forty-two patients with deep intra alveolar periimplant defects were treated by means of a titanium foil–guided bone regeneration technique. Autologous bone in combination with a demineralized freeze-dried bone allotransplant was used for augmentation. Clinical and radiological control was performed 3, 6, and 12 months after surgery.In 37 cases, the average 12-month postoperative increase in bone was 4.2 mm, and the decrease in augmented bone was only 4% compared with the postoperative situation. Acceptable augmentative results-were achieved in 88% of patients after the first operative treatment using a titanium foil–guided bone regeneration technique for reconstruction of periimplant defects and in all patients after the second augmentation. The main problem with foil loss was denudation and infection 6 weeks after surgery.

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID

摘要:

The posterior regions of the mouth sustain greater forces, yet often present poorer bone density. A biomechanical approach, often presented to decrease risk factors in such regions, is to increase implant surface area. Most manufacturers provide implants in various lengths. The longest implants are typically inserted into the anterior regions of the mouth, where forces of less magnitude and superior bone quality are present. A finite element analysis supports the hypothesis that implant length is a secondary parameter for stress distribution. A common approach is to enhance implant surface area in the posterior regions primarily by focusing on diameter. However, this increases surface area by only 300% for conventional thread designs despite the fact that forces increase by >300% in the posterior regions. A change in implant diameter and thread design may increase surface area by >300%. Such increases in surface area may decrease stresses to the crestal bone regions and reduce both crestal bone loss and early loading implant failure.

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

ISSN:1056-6163    

出版商:OVID    

年代:1999

数据来源: OVID