title: Prosthetic abutment influences bone biomechanical behavior of immediately loaded implants.
abstract: This study aimed to evaluate the influence of the type of prosthetic abutment associated to different implant connection on bone biomechanical behavior of immediately and delayed loaded implants. Computed tomography-based finite element models comprising a mandible with a single molar implant were created with different types of prosthetic abutment (UCLA or conical), implant connection (external hexagon, EH or internal hexagon, IH), and occlusal loading (axial or oblique), for both immediately and delayed loaded implants. Analysis of variance at 95%CI was used to evaluate the peak maximum principal stress and strain in bone after applying a 100 N occlusal load. The results showed that the type of prosthetic abutment influences bone stress/strain in only immediately loaded implants. Attachment of conical abutments to IH implants exhibited the best biomechanical behavior, with optimal distribution and dissipation of the load in peri-implant bone.
authors.affiliation: Universidade Estadual de Campinas, Universidade de Campinas, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba SP , Brazil, Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil.
authors.forename: Germana de Villa
authors.initials: Gde V
authors.lastname: Camargos
authors.affiliation: Universidade Federal de Juiz de Fora, Universidade de Juiz de Fora, Dental School, Department of Restorative Dentistry, Juiz de Fora MG , Brazil, Universidade de Juiz de Fora - UFJF, Dental School, Department of Restorative Dentistry, Juiz de Fora, MG, Brazil.
authors.forename: Bruno Salles
authors.initials: BS
authors.lastname: Sotto-Maior
authors.affiliation: Universidade Estadual de Campinas, Universidade de Campinas, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba SP , Brazil, Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil.
authors.forename: Wander José da
authors.initials: WJ
authors.lastname: Silva
authors.affiliation: Universidade Estadual de Campinas, Universidade de Campinas, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba SP , Brazil, Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil.
authors.forename: Priscilla Cardoso
authors.initials: PC
authors.lastname: Lazari
authors.affiliation: Universidade Estadual de Campinas, Universidade de Campinas, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba SP , Brazil, Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil.
authors.forename: Altair Antoninha
authors.initials: AA
authors.lastname: Del Bel Cury
mesh_terms: D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D001842:Bone and Bones / Q000502:physiology*; D017076:Computer-Aided Design; D054893:Cone-Beam Computed Tomography; D000044:Dental Abutments; D059605:Dental Implant-Abutment Design / Q000379:methods*; D020342:Finite Element Analysis; D021621:Imaging, Three-Dimensional / Q000379:methods; D057893:Immediate Dental Implant Loading / Q000379:methods*; D008954:Models, Biological; D015203:Reproducibility of Results; D013314:Stress, Mechanical