Influence of microgap location and configuration on radiographic bone loss in nonsubmerged implants: An experimental study in dogs

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Autor(es): dc.contributorChristian-Albrechts-University-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorWeng, Dietmar-
Autor(es): dc.creatorNagata, Maria José Hitomi-
Autor(es): dc.creatorLeite, Christiane Mota-
Autor(es): dc.creatorDe Melo, Luiz Gustavo Nascimento-
Autor(es): dc.creatorBosco, Alvaro Francisco-
Data de aceite: dc.date.accessioned2025-08-21T20:47:43Z-
Data de disponibilização: dc.date.available2025-08-21T20:47:43Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2011-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/226616-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/226616-
Descrição: dc.descriptionPurpose: The implant-abutment connection (microgap) influences the peri-implant bone morphology. However, it is unclear if different microgap configurations additionally modify bone reactions. This preliminary study aimed to radiographically monitor peri-implant bone levels in two different microgap configurations during 3 months of nonsubmerged healing. Materials and Methods: Six dogs received two implants with internal Morse taper connection (INT group) on one side of the mandible and two implants with externalhex connection (EXT group) on the other side. One implant on each side was positioned at bone level (equicrestal); the second implant was inserted 1.5 mm below the bone crest (subcrestal). Healing abutments were attached directly after implant insertion, and the implants were maintained for 3 months without prosthetic loading. At implant placement and 1, 2, and 3 months, standardized radiographs were taken to monitor peri-implant bone levels. Results: All implants osseointegrated. A total bone loss of 0.48 ± 0.66 mm was measured in the equicrestal INT group, 0.69 ± 0.43 mm in the equicrestal EXT group, 0.79 ± 0.93 mm in the subcrestal INT group, and 1.56 ± 0.53 mm in the subcrestal EXT group (P > .05, paired t tests). Within the four groups, bone loss over time became significantly greater in the EXT groups than in the INT groups. The greatest bone loss was noted in the subcrestal EXT group. Conclusion: Within the limits of this animal study, it seems that even without prosthetic loading, different microgap configurations exhibit different patterns of bone loss during nonsubmerged healing. Subcrestal positioning of an external butt joint microgap may lead to faster radiographic bone loss. © 2011 by Quintessence Publishing Co Inc.-
Descrição: dc.descriptionDepartment of Prosthodontics Propaedeutics and Dental Materials School of Dentistry Christian-Albrechts-University, Kiel-
Descrição: dc.descriptionDivision of Periodontics Department of Surgery and Integrated Clinic Dental School of Araçatuba UNESP-Univ Estadual Paulista, Araçatuba-
Descrição: dc.descriptionUSP-University of São Paulo, Riberão Preto-
Descrição: dc.descriptionDivision of Periodontics Department of Surgery and Integrated Clinic Dental School of Araçatuba UNESP-Univ Estadual Paulista, Araçatuba-
Formato: dc.format445-452-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Prosthodontics-
???dc.source???: dc.sourceScopus-
Título: dc.titleInfluence of microgap location and configuration on radiographic bone loss in nonsubmerged implants: An experimental study in dogs-
Tipo de arquivo: dc.typelivro digital-
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