Evaluation of two interforaminal implants and implant-assisted removable dentures on stress distribution: an in vitro study

• Published in: Journal of the Korean Association of Oral and Maxillofacial Surgeons 2019, 45(4), , pp.199-206
• Main Authors: Arat Bilhan, Selda, Geckili, Onur, Cilingir, Altug, Bozdag, Ergun, Bilhan, Hakan
• Format: Article
• Language: English
• Subjects: Original; 치의학
• ISSN: 2234-7550; 2234-5930
• DOI: 10.5125/jkaoms.2019.45.4.199

In mandibular edentulism, the treatment option with a two-interforaminal implant-retained bridge and a removable partial denture is rarely evaluated in literature. The aim of this study was to evaluate the stress distribution of this treatment option by comparing it with traditional treatment options with interforaminal implants in the edentulous mandible. Two interforaminal implants were placed in a formalin-fixed cadaver mandible, and overdentures with three different types of attachments were fabricated: (1) two ball attachments and an overdenture, (2) a Dolder bar and an overdenture, and (3) screw-retained two-implant inter-canine porcelain fused to a metal bridge and an implant-assisted removable denture (IARD) with precision attachments. Three biting conditions were generated for each denture type, and the strains were documented under vertical loading of 100 N. The calculated strain values from measured strains in all measurement sites and loading conditions for the screw-retained two-implant inter-canine porcelain fused to a metal bridge and a cast framework partial denture with precision attachments situation were lower than in the other scenarios (