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Static and dynamic guided bone regeneration using a shape-memory polyethylene terephthalate membrane: An experimental study in rabbit mandible.
Imoto, Kazuhiro; Hoshi, Karen; Odashima, Kenji; Nogami, Shinnosuke; Unuma, Hidero; Yamauchi, Kensuke.
Afiliación
  • Imoto K; Division of Oral and Maxillofacial Reconstructive Surgery, Department of Disease Management Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
  • Hoshi K; Division of Oral and Maxillofacial Reconstructive Surgery, Department of Disease Management Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
  • Odashima K; Division of Oral and Maxillofacial Reconstructive Surgery, Department of Disease Management Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
  • Nogami S; Division of Oral and Maxillofacial Reconstructive Surgery, Department of Disease Management Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
  • Unuma H; Graduate School of Science and Engineering, Yamagata University, Yamagata, Japan.
  • Yamauchi K; Division of Oral and Maxillofacial Reconstructive Surgery, Department of Disease Management Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
Clin Implant Dent Relat Res ; 26(4): 734-741, 2024 Aug.
Article en En | MEDLINE | ID: mdl-38804257
ABSTRACT

BACKGROUND:

Periosteal expansion (PEO) results in the formation of new bone in the space created between existing bone by expanding the periosteum. PEO has already been performed on rabbit parietal bone and effective new bone formation has been demonstrated. In this study, the utility of a polyethylene terephthalate (PET) membrane as an activator was evaluated in the more complex morphology of the mandible.

METHODS:

A PET membrane coated with hydroxyapatite (HA)/gelatine was placed in the rabbit mandibular bone at lower margin of mandibular molar region underneath periosteum, and screw-fixed. In the experimental group, the membrane was bent and screw-fixed along the lateral surface of the bone, with removal of the outer screw after 7 days followed by activation of the membrane. The experimental group was divided into two subgroups with and without a waiting period for activation. Three animals were euthanized at 3 weeks and another three at 5 weeks postoperatively. Bone formation was assessed using micro-CT as well as histomorphometric and histological methods.

RESULTS:

No PET membrane-related complications were observed. The area of newly formed bone and the percentage of new bone in the space created by the stretched periosteum did not significantly differ between the control and experimental groups. However, in the experimental group a greater volume was present after 5 weeks than after 3 weeks. Histologically, bone formation occurred close to the site of cortical bone perforation, with many sinusoidal vessels extending through the perforations in the new bone into the overlying fibrous tissue. Inflammatory cells were not seen in the bone.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Regeneración Ósea / Tereftalatos Polietilenos / Mandíbula / Membranas Artificiales Límite: Animals Idioma: En Revista: Clin Implant Dent Relat Res Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Regeneración Ósea / Tereftalatos Polietilenos / Mandíbula / Membranas Artificiales Límite: Animals Idioma: En Revista: Clin Implant Dent Relat Res Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos