Stress patterns of two-implant mandibular overdentures depending on the types of attachments
윤성수, 홍성진, 백장현, 권긍록,
소속 상세정보
윤성수 ( Yoon Sung-Soo ) - Private practice
홍성진 ( Hong Seoung-Jin ) - Kyung Hee University School of Dentistry Department of Prosthodontics
백장현 ( Paek Jang-Hyun ) - Kyung Hee University School of Dentistry Department of Prosthodontics
권긍록 ( Kwon Kung-Rock ) - Kyung Hee University School of Dentistry Department of Prosthodontics
KMID : 1025720210400030112
Abstract
Purpose: To analyze the stress pattern on two-implant mandibular overdentures using strain gauges.
Materials and Methods: Two implants and four types of attachments (magnet, locator, ball, and bar) were used with a mandibular implant-retained overdenture. The complete mandibular denture was fabricated on a model using the conventional method. Two implants connected with a strain gauge were installed on both sides of the canine areas. A vertical force of 50 N was applied on the left mandibular first molar area (case 1) and the left premolar and molar areas (case 2) of the denture. The resulting stress pattern was analyzed using the strain gauge and analyzer. The one-way analysis of variance method was used for statistical analysis at α=0.05.
Results: In case 1, the lowest strain value was in the magnetic attachment, while the highest value was noticed in the bar attachment (P<0.05). There was no significant difference in strain values between the ball and locator attachments. In case 2, significant differences in strain values were observed in all the types of attachments and the strain value increased in the order of the magnet, locator, ball, and bar attachment (P<0.05).
Conclusions: The strain values were different for each attachment, and the values increased in the order of the magnet, locator, ball, and bar attachment.
키워드
Mandible; Implant-retained overdenture; Attachment system; Strain gauge; Working/balancing side
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