title: Stress evaluation of implant-abutment connections under different loading conditions: a 3D finite element study.
abstract: This study evaluated the effects of axial and oblique occlusal loading on implant-supported partial dentures with different connection systems (external hexagon, internal hexagon, and Morse taper). Upon axial loading, all systems presented similar stress values. Stress values increased under oblique loading. Stress distribution changed for some of the internal connection structures. It can be concluded that oblique load increases stress on bone structures and prosthetic components. Internal connection system implants present more favorable stress distribution patterns than do external connection system implants.
authors.affiliation: 1  Health Sciences Graduate School, Amazonas State University, Manaus, Amazonas, Brazil.
authors.forename: Jessica Mie Ferreira Koyama
authors.initials: JM
authors.lastname: Takahashi
authors.forename: Andreza Costa
authors.initials: AC
authors.lastname: Dayrell
authors.forename: Rafael Leonardo Xediek
authors.initials: RL
authors.lastname: Consani
authors.forename: Mauro Antônio
authors.initials: MA
authors.lastname: de Arruda Nóbilo
authors.forename: Guilherme Elias Pessanha
authors.initials: GE
authors.lastname: Henriques
authors.forename: Marcelo Ferraz
authors.initials: MF
authors.lastname: Mesquita
mesh_terms: D015921:Dental Implants; D020342:Finite Element Analysis; D013314:Stress, Mechanical
chemical_list: D015921:Dental Implants
keywords: connection system; dental implants; finite element analysis; occlusal loading