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Immediate small-diameter implants as abutments for an overdenture in the edentulous atrophic mandible: report of immersion endoscopic bone in vivo, and histologic bone-implant evaluation after 6 months of function / Implantes de pequeño diámetro como soporte inmediato de sobredentaduras en hueso alveolar mandibular atrófico: reporte de endoscopía de inmersion in vivo y evaluación histológica a los 6 meses de función
Beltrán, Víctor; Lillo, Ricardo; Weber, Benjamín; Valdivia-Gandur, Iván; Manzanares-Céspedes, María Cristina; Engelke, Wilfried.
  • Beltrán, Víctor; Universidad de La Frontera. Faculty of Dentistry. CIDIC. Temuco. CL
  • Lillo, Ricardo; Universidad Mayor. Science Faculty. Santiago. CL
  • Weber, Benjamín; Universidad de La Frontera. Faculty of Dentistry. CL
  • Valdivia-Gandur, Iván; Universidad de Antofagasta. Biomedical and Dentistry Departments. Antofagasta. CL
  • Manzanares-Céspedes, María Cristina; Universitat de Barcelona. Experimental Pathology and Therapeutics Department. Barcelona. ES
  • Engelke, Wilfried; University of Göttingen. Center for Dentistry, Oral Medicine and Craniomaxillofacial Surgery. Department of Oral and Maxillofacial Surgery. Göttingen. DE
Int. j. morphol ; 37(2): 452-458, June 2019. tab, graf
Article in English | LILACS | ID: biblio-1002242
ABSTRACT
The aim of this report was to endoscopically evaluate bone quality in vivo in the immediate installation of temporary small-diameter implants, and again after 6 months of function, through an attachments system for overdenture, in the atrophic mandible of a patient. We also histologically evaluated bone-implant interaction in these temporary small-diameter implants, once the success of the osseointegration of the submerged implants was guaranteed. A patient received a total of 6 implants in the atrophic mandible, two of which were immediately loaded with a provisional prosthesis, and four were left to heal in a submerged way. Further, an immersion endoscopic evaluation was performed during bone drilling, and this showed a compact bone structure with limited vascularization and predominantly cortical structure.This immediate loading protocol involving an overdenture retained by two small-diameter implants of 2.9 mm in the atrophic mandible proved to be successful after 6 months of loading. Clinical and histologic osseointegration was consistently achieved for both of the retrieved immediately loaded implants. This modality allows the patient to be restored with a stable, functional, and aesthetic prosthesis during the osseointegration period of submerged implants and soft-tissue healing, before the removal of the provisional implants. The histological evaluation of bone-implant contact found that the space between the implant threads closer to the surface was filled with woven bone and lamellar bone, but the tissue in contact with the cervical portion of the implants was compatible with cortical bone organization. Also, the newly formed bone has a regular cell distribution and characteristics of advanced maturation after 6 months of function in the atrophic mandible. Anchored overdentures in 2 to 4 small-diameter implants (2.9 mm) for edentulous patients with severe atrophy of the mandible with cortical bone would be a minimally invasive alternative.
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Full text: Available Index: LILACS (Americas) Main subject: Dental Implants / Jaw, Edentulous / Denture, Overlay / Endoscopy Type of study: Practice guideline Limits: Humans Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2019 Type: Article / Project document Affiliation country: Chile / Germany / Spain Institution/Affiliation country: Universidad Mayor/CL / Universidad de Antofagasta/CL / Universidad de La Frontera/CL / Universitat de Barcelona/ES / University of Göttingen/DE

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Full text: Available Index: LILACS (Americas) Main subject: Dental Implants / Jaw, Edentulous / Denture, Overlay / Endoscopy Type of study: Practice guideline Limits: Humans Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2019 Type: Article / Project document Affiliation country: Chile / Germany / Spain Institution/Affiliation country: Universidad Mayor/CL / Universidad de Antofagasta/CL / Universidad de La Frontera/CL / Universitat de Barcelona/ES / University of Göttingen/DE