dc.contributorUmeå University
dc.contributorUniversidade de Cuiabá (UNIC)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorGothenburg University
dc.date.accessioned2014-05-27T11:23:59Z
dc.date.accessioned2022-10-05T18:17:40Z
dc.date.available2014-05-27T11:23:59Z
dc.date.available2022-10-05T18:17:40Z
dc.date.created2014-05-27T11:23:59Z
dc.date.issued2009-10-01
dc.identifierClinical Implant Dentistry and Related Research, v. 11, n. SUPPL. 1, 2009.
dc.identifier1523-0899
dc.identifierhttp://hdl.handle.net/11449/71172
dc.identifier10.1111/j.1708-8208.2009.00158.x
dc.identifier2-s2.0-72449210658
dc.identifier6273648007883637
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3920386
dc.description.abstractBackground: Previous studies have shown that membrane elevation results in predictable bone formation in the maxillary sinus provided that implants can be placed as tent poles. In situations with an extremely thin residual crest which impairs implant placement, it is possible that a space-making device can be used under the sinus membrane to promote bone formation prior to placement of implants. Purpose: The present study was conducted to test the hypothesis that the use of a space-making device for elevation of the sinus membrane will result in predictable bone formation at the maxillary sinus floor to allow placement of dental implants. Materials and Methods: Eight tufted capuchin primates underwent bilateral sinus membrane elevation surgery, and a bioresorbable space-making device, about 6 mm wide and 6 mm in height, was placed below the elevated membrane on the sinus floor. An oxidized implant (Nobel Biocare AB, Gothenburg, Sweden) was installed in the residual bone protruding into the created space at one side while the other side was left without an implant. Four animals were sacrificed after 6 months of healing. The remaining four animals received a second implant in the side with a space-making device only and followed for another 3 months before sacrifice. Implant stability was assessed through resonance frequency analysis (RFA) using the Osstell™ (Osstell AB, Gothenburg, Sweden) at installation, 6 months and 9 months after the first surgery. The bone-implant contact (BIC) and bone area inside the threads (BA) were histometrically evaluated in ground sections. Results: Histologically there were only minor or no signs of bone formation in the sites with a space-making device only. Sites with simultaneous implant placement showed bone formation along the implant surface. Sites with delayed implant placement showed minor or no bone formation and/or formation of a dense fibrous tissue along the apical part of the implant surface. In the latter group the apical part of the implant was not covered with the membrane but protruded into the sinus cavity. Conclusions: The use of a space-making device, with the design used in the present study, does not result in bone formation at the sinus floor. However, membrane elevation and simultaneous placement of the device and an implant does result in bone formation at the implant surface while sites with implants placed 6 months after membrane elevation show only small amounts of bone formation. It is suggested that lack of stabilization of the device and/or a too extensive elevation of the membrane may explain the results. © 2009, Wiley Periodicals, Inc.
dc.languageeng
dc.relationClinical Implant Dentistry and Related Research
dc.relation3.097
dc.relation1,827
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectBone formation
dc.subjectDental implants
dc.subjectMaxillary sinus
dc.subjectMembrane elevation
dc.subjectOsseointegration
dc.subjectpolyester
dc.subjectpolylactide
dc.subjectanimal
dc.subjectbone development
dc.subjectbone regeneration
dc.subjectCebidae
dc.subjectinstrumentation
dc.subjectmale
dc.subjectmaxillary sinus
dc.subjectnose mucosa
dc.subjectoral surgery
dc.subjecttooth implantation
dc.subjecttooth prosthesis
dc.subjectvibration
dc.subjectAnimals
dc.subjectCebus
dc.subjectDental Implantation, Endosseous
dc.subjectDental Prosthesis Retention
dc.subjectMale
dc.subjectMaxillary Sinus
dc.subjectNasal Mucosa
dc.subjectOral Surgical Procedures, Preprosthetic
dc.subjectOsteogenesis
dc.subjectPolyesters
dc.subjectVibration
dc.titleHistological findings following the use of a space-making device for bone reformation and implant integration in the maxillary sinus of primates
dc.typeArtigo


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