Your browser doesn't support javascript.
loading
A novel bi-layered asymmetric membrane incorporating demineralized dentin matrix accelerates tissue healing and bone regeneration in a rat skull defect model.
Li, Yan-Fei; Luo, Qi-Pei; Yang, Yu-Xin; Li, An-Qi; Zhang, Xin-Chun.
Afiliação
  • Li YF; Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. zhxinch@mail.sysu.edu.cn.
  • Luo QP; Department of Stomatology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, China.
  • Yang YX; Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. zhxinch@mail.sysu.edu.cn.
  • Li AQ; Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. zhxinch@mail.sysu.edu.cn.
  • Zhang XC; Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China. zhxinch@mail.sysu.edu.cn.
Biomater Sci ; 12(16): 4226-4241, 2024 Aug 06.
Article em En | MEDLINE | ID: mdl-38984522
ABSTRACT

Objectives:

The technique of guided bone regeneration (GBR) has been widely used in the field of reconstructive dentistry to address hard tissue deficiency. The objective of this research was to manufacture a novel bi-layered asymmetric membrane that incorporates demineralized dentin matrix (DDM), a bioactive bone replacement derived from dentin, in order to achieve both soft tissue isolation and hard tissue regeneration simultaneously.

Methods:

DDM particles were harvested from healthy, caries-free permanent teeth. The electrospinning technique was utilized to synthesize bi-layered DDM-loaded PLGA/PLA (DPP) membranes. We analyzed the DPP bilayer membranes' surface topography, physicochemical properties and degradation ability. Rat skull critical size defects (CSDs) were constructed to investigate in vivo bone regeneration.

Results:

The synthesized DPP bilayer membranes possessed suitable surface characteristics, acceptable mechanical properties, good hydrophilicity, favorable apatite forming ability and suitable degradability. Micro-computed tomography (CT) showed significantly more new bone formation in the rat skull defects implanted with the DPP bilayer membranes. Histological evaluation further revealed that the bone was more mature with denser bone trabeculae. In addition, the DPP bilayer membrane significantly promoted the expression of the OCN matrix protein in vivo.

Conclusions:

The DPP bilayer membranes exhibited remarkable biological safety and osteogenic activity in vivo and showed potential as a prospective candidate for GBR applications in the future.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Crânio / Regeneração Óssea / Dentina Limite: Animals Idioma: En Revista: Biomater Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Crânio / Regeneração Óssea / Dentina Limite: Animals Idioma: En Revista: Biomater Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Reino Unido