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The International Journal of Oral & Maxillofacial Implants
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Int J Oral Maxillofac Implants 32 (2017), Nr. 4     18. Juli 2017
Int J Oral Maxillofac Implants 32 (2017), Nr. 4  (18.07.2017)

Seite 815-821, doi:10.11607/jomi.5618, PubMed:28708913, Sprache: Englisch


Effect of Attachment Type on Denture Strain in Maxillary Implant Overdentures: Part 1. Overdenture with Palate
Takahashi, Toshihito / Gonda, Tomoya / Maeda, Yoshinobu
Purpose: This study examined the effects of attachments on strain in maxillary implant overdentures supported by two or four implants.
Materials and Methods: A maxillary edentulous model with implants inserted into anterior, premolar, and molar areas was fabricated, and three types of unsplinted attachments-ball, locator, and magnet-were set on the implants distributed under various conditions. Maxillary experimental dentures were fabricated, and two strain gauges were attached at the anterior midline on the labial and palatal sides. A vertical occlusal load of 98 N was applied and shear strain of the dentures was measured.
Results: On both sides, magnet attachments resulted in the lowest shear strain, while ball attachments resulted in the highest shear strain under most conditions. However, differences in shear strain among the three attachment types were not significant when supported by four implants, especially molar implants.
Conclusion: Shear strain of the maxillary implant overdenture was lowest when using magnet attachments. Magnet attachments mounted on four implants are recommended to prevent denture complications when using maxillary implant overdentures.

Schlagwörter: ball attachment, implant configuration, locator attachment, magnet attachment, maxillary implant overdenture
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