임플란트 오버덴처의 다양한 문제점에 대한 후향적 연구
Retrospective study on various complications of implant overdenture
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Purpose: Implant retained overdenture has many benefi ts. However, it is affected by various factors such as bone quality, the number of implants, types of attachments, masticatory pattern, and periodical management. Clinically, these factors are related to prosthetic complications and longevity of implants. In this study, we evaluated patients treated with implant overdenture and considered factors that may be related to implant complications. Materials and Methods: To evaluate various complications, we analyzed the clinical charts of patients treated with implant overdenture from 2005 to 2010. Single or bimaxillary edentulous patients with implant overdenture loaded over 1 year were included. Those patients with systemic factors, unclear recordings, and that did not undergo periodic checks were excluded. Results: In total, 173 implants (53 maxilla, 120 mandible) were installed in 48 patients, and 53 overdentures (14 maxilla, 39mandible) were made. The average number of overdentures was 3.6 in maxilla and 3 in mandible. Stud type attachments were used in 12 cases (1 maxilla, 11 mandible), and bar type attachments were used in 41 cases (13 maxilla, 28 mandible). The rates of maxilla and mandible were 22.5% and 77.5%, respectively. Four cases of failure of the implant fi xture were identifi ed. Failure of osseointegration was found in two of the cases, and fracture of the implant fi xture was found in one case. Both types of failure were found in another case. Fracture of the clip, O-ring replacement, and falling off the magnet or locator were identifi ed as prosthetic complications. Conclusion: Implant overdenture treatment is a very effi cient and reasonable treatment option for edentulous patients. However,to achieve good treatment results and longevity, precise diagnosis, ideal implant placement, stable occlusion, and periodic followup are required.
Abstract
Purpose: Implant retained overdenture has many benefi ts. However, it is affected by various factors such as bone quality, the number of implants, types of attachments, masticatory pattern, and periodical management. Clinically, these factors are related to prosthetic complications and longevity of implants. In this study, we evaluated patients treated with implant overdenture and considered factors that may be related to implant complications. Materials and Methods: To evaluate various complications, we analyzed the clinical charts of patients treated with implant overdenture from 2005 to 2010. Single or bimaxillary edentulous patients with implant overdenture loaded over 1 year were included. Those patients with systemic factors, unclear recordings, and that did not undergo periodic checks were excluded. Results: In total, 173 implants (53 maxilla, 120 mandible) were installed in 48 patients, and 53 overdentures (14 maxilla, 39mandible) were made. The average number of overdentures was 3.6 in maxilla and 3 in mandible. Stud type attachments were used in 12 cases (1 maxilla, 11 mandible), and bar type attachments were used in 41 cases (13 maxilla, 28 mandible). The rates of maxilla and mandible were 22.5% and 77.5%, respectively. Four cases of failure of the implant fi xture were identifi ed. Failure of osseointegration was found in two of the cases, and fracture of the implant fi xture was found in one case. Both types of failure were found in another case. Fracture of the clip, O-ring replacement, and falling off the magnet or locator were identifi ed as prosthetic complications. Conclusion: Implant overdenture treatment is a very effi cient and reasonable treatment option for edentulous patients. However,to achieve good treatment results and longevity, precise diagnosis, ideal implant placement, stable occlusion, and periodic followup are required.
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