Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.joms.2009.04.077 http://hdl.handle.net/11449/231229 |
Resumo: | Purpose: The aim of the present study was to investigate the healing, integration, and maintenance of autogenous onlay bone grafts and implant osseointegration either loaded in the early or the delayed stages. Materials and Methods: A total of 5 male dogs received bilateral blocks of onlay bone grafts harvested from the contralateral alveolar ridge of the mandible. On one side, the bone block was secured by 3 dental implants (3.5 mm × 13.0 mm, Osseospeed; AstraTech AB, Mölndal, Sweden). Two implants at the extremities of the graft were loaded 2 days after installation by abutment connection and prosthesis (simultaneous implant placement group); the implant in the middle remained unloaded and served as the control. On the other side, the block was fixed with 2 fixation screws inserted in the extremities of the graft. Four weeks later, the fixation screws were replaced with 3 dental implants. The loading procedure (delayed implant placement group) was performed 2 days later, as described for the simultaneous implant placement sites. The animals were sacrificed 12 weeks after the grafting procedure. Implant stability was measured through resonance frequency analysis. The bone volume and density were assessed on computed tomography. The bone to implant contact and bone area in a region of interest were evaluated on histologic slides. Results: The implant stability quotient showed statistical significance in favor of the delayed loaded grafts (P = .001). The bone-to-implant contact (P = .008) and bone area in a region of interest (P = 0.005) were significantly greater in the delayed group. Nevertheless, no difference was found in terms of graft volume and density between the early loaded and delayed-loaded approaches. Conclusions: The protocol in which the implant and bone graft were given delayed loading allows for effective quality of implant osseointegration and stabilization, with healing and remodeling occurring in areas near the implant resulting in denser bone architecture. © 2010 American Association of Oral and Maxillofacial Surgeons. |
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Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in DogsPurpose: The aim of the present study was to investigate the healing, integration, and maintenance of autogenous onlay bone grafts and implant osseointegration either loaded in the early or the delayed stages. Materials and Methods: A total of 5 male dogs received bilateral blocks of onlay bone grafts harvested from the contralateral alveolar ridge of the mandible. On one side, the bone block was secured by 3 dental implants (3.5 mm × 13.0 mm, Osseospeed; AstraTech AB, Mölndal, Sweden). Two implants at the extremities of the graft were loaded 2 days after installation by abutment connection and prosthesis (simultaneous implant placement group); the implant in the middle remained unloaded and served as the control. On the other side, the block was fixed with 2 fixation screws inserted in the extremities of the graft. Four weeks later, the fixation screws were replaced with 3 dental implants. The loading procedure (delayed implant placement group) was performed 2 days later, as described for the simultaneous implant placement sites. The animals were sacrificed 12 weeks after the grafting procedure. Implant stability was measured through resonance frequency analysis. The bone volume and density were assessed on computed tomography. The bone to implant contact and bone area in a region of interest were evaluated on histologic slides. Results: The implant stability quotient showed statistical significance in favor of the delayed loaded grafts (P = .001). The bone-to-implant contact (P = .008) and bone area in a region of interest (P = 0.005) were significantly greater in the delayed group. Nevertheless, no difference was found in terms of graft volume and density between the early loaded and delayed-loaded approaches. Conclusions: The protocol in which the implant and bone graft were given delayed loading allows for effective quality of implant osseointegration and stabilization, with healing and remodeling occurring in areas near the implant resulting in denser bone architecture. © 2010 American Association of Oral and Maxillofacial Surgeons.Department of Oral and Maxillofacial Surgery University of the State of São Paulo Faculty of Dentistry of Aracatuba, AracatubaDepartment of Periodontics and Implantology Brazilian Dental Association, GoianiaDepartment of Dental Materials and Prostheses University of São Paulo Faculty of Dentistry of Ribeirao, Preto, São PauloDepartment of Oral and Maxillofacial Surgery Sahlgrenska Academy Gothenburg University, GothenburgDepartment of Oral and Maxillofacial Surgery and Periodontics University of São Paulo Faculty of Dentistry of Ribeirao Preto, Ribeirao PretoFaculty of Dentistry of AracatubaBrazilian Dental AssociationUniversidade de São Paulo (USP)Gothenburg UniversityFaria, Paulo E.P.Carvalho, Alexandre L.de Torres, Érica M.Rasmusson, LarsSalata, Luiz A.2022-04-29T08:44:15Z2022-04-29T08:44:15Z2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article825-832http://dx.doi.org/10.1016/j.joms.2009.04.077Journal of Oral and Maxillofacial Surgery, v. 68, n. 4, p. 825-832, 2010.0278-2391http://hdl.handle.net/11449/23122910.1016/j.joms.2009.04.0772-s2.0-77949444930Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Oral and Maxillofacial Surgeryinfo:eu-repo/semantics/openAccess2022-04-29T08:44:15Zoai:repositorio.unesp.br:11449/231229Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:35:50.523971Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
title |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
spellingShingle |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs Faria, Paulo E.P. |
title_short |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
title_full |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
title_fullStr |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
title_full_unstemmed |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
title_sort |
Effects of Early Functional Loading on Maintenance of Free Autogenous Bone Graft and Implant Osseointegration: An Experimental Study in Dogs |
author |
Faria, Paulo E.P. |
author_facet |
Faria, Paulo E.P. Carvalho, Alexandre L. de Torres, Érica M. Rasmusson, Lars Salata, Luiz A. |
author_role |
author |
author2 |
Carvalho, Alexandre L. de Torres, Érica M. Rasmusson, Lars Salata, Luiz A. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Faculty of Dentistry of Aracatuba Brazilian Dental Association Universidade de São Paulo (USP) Gothenburg University |
dc.contributor.author.fl_str_mv |
Faria, Paulo E.P. Carvalho, Alexandre L. de Torres, Érica M. Rasmusson, Lars Salata, Luiz A. |
description |
Purpose: The aim of the present study was to investigate the healing, integration, and maintenance of autogenous onlay bone grafts and implant osseointegration either loaded in the early or the delayed stages. Materials and Methods: A total of 5 male dogs received bilateral blocks of onlay bone grafts harvested from the contralateral alveolar ridge of the mandible. On one side, the bone block was secured by 3 dental implants (3.5 mm × 13.0 mm, Osseospeed; AstraTech AB, Mölndal, Sweden). Two implants at the extremities of the graft were loaded 2 days after installation by abutment connection and prosthesis (simultaneous implant placement group); the implant in the middle remained unloaded and served as the control. On the other side, the block was fixed with 2 fixation screws inserted in the extremities of the graft. Four weeks later, the fixation screws were replaced with 3 dental implants. The loading procedure (delayed implant placement group) was performed 2 days later, as described for the simultaneous implant placement sites. The animals were sacrificed 12 weeks after the grafting procedure. Implant stability was measured through resonance frequency analysis. The bone volume and density were assessed on computed tomography. The bone to implant contact and bone area in a region of interest were evaluated on histologic slides. Results: The implant stability quotient showed statistical significance in favor of the delayed loaded grafts (P = .001). The bone-to-implant contact (P = .008) and bone area in a region of interest (P = 0.005) were significantly greater in the delayed group. Nevertheless, no difference was found in terms of graft volume and density between the early loaded and delayed-loaded approaches. Conclusions: The protocol in which the implant and bone graft were given delayed loading allows for effective quality of implant osseointegration and stabilization, with healing and remodeling occurring in areas near the implant resulting in denser bone architecture. © 2010 American Association of Oral and Maxillofacial Surgeons. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 2022-04-29T08:44:15Z 2022-04-29T08:44:15Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.joms.2009.04.077 Journal of Oral and Maxillofacial Surgery, v. 68, n. 4, p. 825-832, 2010. 0278-2391 http://hdl.handle.net/11449/231229 10.1016/j.joms.2009.04.077 2-s2.0-77949444930 |
url |
http://dx.doi.org/10.1016/j.joms.2009.04.077 http://hdl.handle.net/11449/231229 |
identifier_str_mv |
Journal of Oral and Maxillofacial Surgery, v. 68, n. 4, p. 825-832, 2010. 0278-2391 10.1016/j.joms.2009.04.077 2-s2.0-77949444930 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Oral and Maxillofacial Surgery |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
825-832 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128954310066176 |