Effect of bite force in occlusal adjustment of dental implants on the distribution of occlusal pressure: comparison among three bite forces in occlusal adjustment
Identifieur interne : 001208 ( Main/Exploration ); précédent : 001207; suivant : 001209Effect of bite force in occlusal adjustment of dental implants on the distribution of occlusal pressure: comparison among three bite forces in occlusal adjustment
Auteurs : Sho Kayumi [Japon] ; Yoshiyuki Takayama [Japon] ; Atsuro Yokoyama [Japon] ; Nana Ueda [Japon]Source :
- International Journal of Implant Dentistry [ 2198-4034 ] ; 2015.
Abstract
The purpose of this study was to investigate the influence of occlusal forces (the contractile force of masticatory muscles) exerted during occlusal adjustment on the distribution of the forces among teeth, implants, and temporomandibular joints (TMJs) in intercuspal clenching in cases with bilateral missing molars and premolars by using finite element analysis.
A three-dimensional finite element model of the mandible with eight implants in the premolar and molar regions was constructed. Linearly elastic material properties were defined for all elements except the periodontal ligament, which was defined as nonlinearly elastic. The TMJs and antagonists were simplified and replaced with nonlinear springs. Antagonists were assumed to be natural teeth or implants and had two- or three-stage displaceability. We constructed finite element (FE) models in which occlusal adjustment with three kinds of occlusal force (40 N as a light bite, 200 N as a hard bite, and 400 N as a maximum biting force) was performed. The clearance by occlusal adjustment was decided beforehand with a trial-and-error method so that the occlusal forces were distributed similarly to the distribution of the natural dentition. Each model was evaluated under loads of 40, 100, 200, 400, and 800 N to determine the distribution of occlusal forces on the teeth and implants.
The occlusal forces were concentrated on the most posterior implants while the load was larger, and the percentage of bearing force at the TMJ was small, and vice versa.
Maximum biting force was better for occlusal adjustment to prevent overloading of the most posterior implant.
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DOI: 10.1186/s40729-015-0014-2
PubMed: 27747636
PubMed Central: 5005760
Affiliations:
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Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="Aff2">Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita-13, Nishi-7, Kita-Ku, Sapporo, 060-8648 Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita-13, Nishi-7, Kita-Ku, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author><author><name sortKey="Takayama, Yoshiyuki" sort="Takayama, Yoshiyuki" uniqKey="Takayama Y" first="Yoshiyuki" last="Takayama">Yoshiyuki Takayama</name><affiliation wicri:level="1"><nlm:aff id="Aff1">Removable Prosthodontics, Hokkaido University Hospital, Hokkaido University, Kita-14, Nishi-5, Kita-Ku, Sapporo, 060-8648 Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Removable Prosthodontics, Hokkaido University Hospital, Hokkaido University, Kita-14, Nishi-5, Kita-Ku, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author><author><name sortKey="Yokoyama, Atsuro" sort="Yokoyama, Atsuro" uniqKey="Yokoyama A" first="Atsuro" last="Yokoyama">Atsuro Yokoyama</name><affiliation wicri:level="1"><nlm:aff id="Aff2">Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita-13, Nishi-7, Kita-Ku, Sapporo, 060-8648 Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University, Kita-13, Nishi-7, Kita-Ku, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author><author><name sortKey="Ueda, Nana" sort="Ueda, Nana" uniqKey="Ueda N" first="Nana" last="Ueda">Nana Ueda</name><affiliation wicri:level="1"><nlm:aff id="Aff1">Removable Prosthodontics, Hokkaido University Hospital, Hokkaido University, Kita-14, Nishi-5, Kita-Ku, Sapporo, 060-8648 Japan</nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Removable Prosthodontics, Hokkaido University Hospital, Hokkaido University, Kita-14, Nishi-5, Kita-Ku, Sapporo</wicri:regionArea><wicri:noRegion>Sapporo</wicri:noRegion></affiliation></author></analytic><series><title level="j">International Journal of Implant Dentistry</title><idno type="eISSN">2198-4034</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>The purpose of this study was to investigate the influence of occlusal forces (the contractile force of masticatory muscles) exerted during occlusal adjustment on the distribution of the forces among teeth, implants, and temporomandibular joints (TMJs) in intercuspal clenching in cases with bilateral missing molars and premolars by using finite element analysis.</p></sec><sec><title>Methods</title><p>A three-dimensional finite element model of the mandible with eight implants in the premolar and molar regions was constructed. Linearly elastic material properties were defined for all elements except the periodontal ligament, which was defined as nonlinearly elastic. The TMJs and antagonists were simplified and replaced with nonlinear springs. Antagonists were assumed to be natural teeth or implants and had two- or three-stage displaceability. We constructed finite element (FE) models in which occlusal adjustment with three kinds of occlusal force (40 N as a light bite, 200 N as a hard bite, and 400 N as a maximum biting force) was performed. The clearance by occlusal adjustment was decided beforehand with a trial-and-error method so that the occlusal forces were distributed similarly to the distribution of the natural dentition. Each model was evaluated under loads of 40, 100, 200, 400, and 800 N to determine the distribution of occlusal forces on the teeth and implants.</p></sec><sec><title>Results</title><p>The occlusal forces were concentrated on the most posterior implants while the load was larger, and the percentage of bearing force at the TMJ was small, and vice versa.</p></sec><sec><title>Conclusions</title><p>Maximum biting force was better for occlusal adjustment to prevent overloading of the most posterior implant.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Isidor, F" uniqKey="Isidor F">F Isidor</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kim, Y" uniqKey="Kim Y">Y Kim</name></author><author><name sortKey="Oh, T" uniqKey="Oh T">T Oh</name></author><author><name sortKey="Misch, Ce" uniqKey="Misch C">CE Misch</name></author><author><name sortKey="Wang, H" uniqKey="Wang H">H 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Sondang</name></author><author><name sortKey="Fujitani, M" uniqKey="Fujitani M">M Fujitani</name></author><author><name sortKey="Nikawa, H" uniqKey="Nikawa H">H Nikawa</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Nishigawa, K" uniqKey="Nishigawa K">K Nishigawa</name></author><author><name sortKey="Bando, E" uniqKey="Bando E">E Bando</name></author><author><name sortKey="Nakano, M" uniqKey="Nakano M">M Nakano</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Japon</li></country></list><tree><country name="Japon"><noRegion><name sortKey="Kayumi, Sho" sort="Kayumi, Sho" uniqKey="Kayumi S" first="Sho" last="Kayumi">Sho Kayumi</name></noRegion><name sortKey="Kayumi, Sho" sort="Kayumi, Sho" uniqKey="Kayumi S" first="Sho" last="Kayumi">Sho Kayumi</name><name sortKey="Takayama, Yoshiyuki" sort="Takayama, Yoshiyuki" uniqKey="Takayama Y" first="Yoshiyuki" last="Takayama">Yoshiyuki Takayama</name><name sortKey="Ueda, Nana" sort="Ueda, Nana" uniqKey="Ueda N" first="Nana" last="Ueda">Nana Ueda</name><name sortKey="Yokoyama, Atsuro" sort="Yokoyama, Atsuro" uniqKey="Yokoyama A" first="Atsuro" last="Yokoyama">Atsuro Yokoyama</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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