Effects of type of magnet attachment and implant angulation in two implant overdenture models
송소연, Kang Kyeong-Hwan, 이정열, 신상완,
소속 상세정보
송소연 ( Song So-Yeon ) - Korea University Graduate School Department of Biomedical Sciences
( Kang Kyeong-Hwan ) - Korea University Medical Center Department of Prosthodontics
이정열 ( Lee Jeong-Yol ) - Korea University Medical Center Guro Hospital Institute for Clinical Dental Research Department of Prosthodontics
신상완 ( Shin Sang-Wan ) - Korea University Institute for Clinical Dental Research
Abstract
PURPOSE: The purpose of this study is to evaluate the effects of type of magnet attachment and implant angulation in two implant overdenture models.
MATERIALS AND METHODS: Magnet attachments used in this study were flat and dome types (MGT5515, MGT5520D, Dentium Co., Seoul, Korea). Two implants with keepers were inserted in the resin blocks at a distance of 24 mm. For the first model, the implants were parallel to the vertical and perpendicular to the horizontal; for the second model, both were angulated 5 degrees to the mesial; for the third model, both were angulated 10 degrees toward the mesial. The retentive force was measured in both vertical and lateral directions. Statistical analyses were performed using SPSS software version 22.0 (α=.05).
RESULTS: The flat type magnet attachment showed the highest lateral retentive force in the 20° divergent group (P<.05) and the dome type magnet attachment showed the highest lateral retentive force in the parallel group (P<.05). The vertical and lateral retentive force of the dome type magnet attachment was greater than that of the flat type magnet attachment in every direction (P<.05).
CONCLUSION: Within the limitations of this study, the dome shape magnet attachment can resist vertical and lateral retentive force more superiorly than the flat type magnet attachment, regardless of angle, in the mandibular two implant model.
키워드
Two implant overdenture model; Magnet attachments; Implant angulation
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