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Assessment of Contact Pressures between a Mandibular Overdenture and the Prosthodontic Area

1
Department of Gerodontology and Oral Pathology Chair of Prosthodontics, Poznan University of Medical Sciences, Bukowska Street 70, 60-812 Poznan, Poland
2
Department of Plant-Derived Food Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 31, 60-624 Poznan, Poland
3
Institute of Structural Analysis, Poznan University of Technology, Piotrowo 5 Street, 60-965 Poznan, Poland
4
Department of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-627 Poznan, Poland
*
Author to whom correspondence should be addressed.
Academic Editors: Bruno Chrcanovic and Luca Testarelli
Appl. Sci. 2021, 11(10), 4339; https://doi.org/10.3390/app11104339
Received: 26 March 2021 / Revised: 7 May 2021 / Accepted: 7 May 2021 / Published: 11 May 2021
(This article belongs to the Section Applied Dentistry)
In this paper, we assess the pressure between the overdenture located in the mandible and supported by a bar retained on two implants and the prosthodontic area. For testing, a model of an edentulous mandible was created using a mold by FRASACO with two implants and a “rider” bar inserted. A complete mandibular denture with polypropylene matrices was made. Three types of matrices of various stiffness were applied. The mandible and overdenture geometry was mapped using a digital image obtained with a Steinbichler Comet L3D 3D scanner. Finite element method calculations were performed in the Abaqus FEA software. The results demonstrate that the maximum contact pressure is observed when the loads are associated with canines. A critical case for the lower posterior is chewing performed by the molars. The pressure zone is the largest for POM-1 with Young’s modulus of 1.5 GPa and is reduced by 5.0% and 7.8% for POM-2 (E = 2.5 GPa) and POM-3 (E = 3.5 GPa), respectively. The stress distribution under the prosthesis mostly depends on the region loaded onto it. The applied load produces a slight contact pressure between the denture and the prosthodontic area in the anterior zone. A change in polypropylene matrix stiffness does not affect contact pressures. View Full-Text
Keywords: bar; implant; contact pressure; matrix; mandible; finite element analysis bar; implant; contact pressure; matrix; mandible; finite element analysis
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MDPI and ACS Style

Idzior-Haufa, M.; Pilarska, A.A.; Gajewski, T.; Szajek, K.; Faściszewski, Ł.; Boniecki, P.; Pilarski, K.; Łukaszewska-Kuska, M.; Dorocka-Bobkowska, B. Assessment of Contact Pressures between a Mandibular Overdenture and the Prosthodontic Area. Appl. Sci. 2021, 11, 4339. https://doi.org/10.3390/app11104339

AMA Style

Idzior-Haufa M, Pilarska AA, Gajewski T, Szajek K, Faściszewski Ł, Boniecki P, Pilarski K, Łukaszewska-Kuska M, Dorocka-Bobkowska B. Assessment of Contact Pressures between a Mandibular Overdenture and the Prosthodontic Area. Applied Sciences. 2021; 11(10):4339. https://doi.org/10.3390/app11104339

Chicago/Turabian Style

Idzior-Haufa, Małgorzata, Agnieszka A. Pilarska, Tomasz Gajewski, Krzysztof Szajek, Łukasz Faściszewski, Piotr Boniecki, Krzysztof Pilarski, Magdalena Łukaszewska-Kuska, and Barbara Dorocka-Bobkowska. 2021. "Assessment of Contact Pressures between a Mandibular Overdenture and the Prosthodontic Area" Applied Sciences 11, no. 10: 4339. https://doi.org/10.3390/app11104339

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