Background:
Treatment of the extremely atrophic posterior maxilla represents a major challenge in dental implantology. In addition to characteristically poor bone quality, bone augmentation is often required to provide sufficient bone height for proper implant placement. New therapeutic solutions that significantly reduce biologic and economic costs for the patient are greatly needed. While traditional implants consist entirely of titanium, the industry has introduced several new hybrid implant materials, such as Trabecular Metal (TM) Material, a highly porous tantalum biomaterial. Its three-dimensional structure mimics trabecular bone and has been used for over 15 years to enhance the osseointegration of orthopedic implants through additional bone growth into the material. A new combination TM and titanium dental implant has recently been introduced.
Aim/Hypothesis:
The aim of this study was to evaluate the efficacy of placing TM dental implants into augmented posterior maxillary jaws.
Material and Methods:
A total of 22 TM dental implants were placed in the posterior maxillae of 16 patients six months after maxillary sinus augmentation with a mineralized bone allograft. Three months after TM implant installation, the implants were uncovered and evaluated by a countertorque of 25Ncm. Implant success was evaluated clinically and radiologically 12 months after implant placement.
Results:
All implants tolerated attempted removal torque at 25 Ncm at the second-stage surgery. The implant survival was 100% at 12 months after implant placement. At the clinical level, there were no pathologies or detectable periimplant marginal bone loss.
Conclusions and clinical implications:
The favorable outcome of the described treatment suggests that the rehabilitation of atrophic posterior maxillary region can be achieved by the placement of TM implants in sites augmented with mineralized bone allograft without the necessity of harvesting autologous bone.
Background:
Treatment of the extremely atrophic posterior maxilla represents a major challenge in dental implantology. In addition to characteristically poor bone quality, bone augmentation is often required to provide sufficient bone height for proper implant placement. New therapeutic solutions that significantly reduce biologic and economic costs for the patient are greatly needed. While traditional implants consist entirely of titanium, the industry has introduced several new hybrid implant materials, such as Trabecular Metal (TM) Material, a highly porous tantalum biomaterial. Its three-dimensional structure mimics trabecular bone and has been used for over 15 years to enhance the osseointegration of orthopedic implants through additional bone growth into the material. A new combination TM and titanium dental implant has recently been introduced.
Aim/Hypothesis:
The aim of this study was to evaluate the efficacy of placing TM dental implants into augmented posterior maxillary jaws.
Material and Methods:
A total of 22 TM dental implants were placed in the posterior maxillae of 16 patients six months after maxillary sinus augmentation with a mineralized bone allograft. Three months after TM implant installation, the implants were uncovered and evaluated by a countertorque of 25Ncm. Implant success was evaluated clinically and radiologically 12 months after implant placement.
Results:
All implants tolerated attempted removal torque at 25 Ncm at the second-stage surgery. The implant survival was 100% at 12 months after implant placement. At the clinical level, there were no pathologies or detectable periimplant marginal bone loss.
Conclusions and clinical implications:
The favorable outcome of the described treatment suggests that the rehabilitation of atrophic posterior maxillary region can be achieved by the placement of TM implants in sites augmented with mineralized bone allograft without the necessity of harvesting autologous bone.