聚乳酸?羟基乙酸共聚物在牙髓疾病治疗中的应用前景

材料学的发展对牙髓疾病的治疗有重要意义,聚乳酸?羟基乙酸共聚物poly(lactic?co?glycolic acid),PLGA]是一种被广泛应用于生物医用材料制备的有机高分子化合物。近年来,作为载药/分子系统和组织再生支架在牙髓疾病治疗中展现出应用前景,本文将对PLGA在牙髓疾病治疗中的应用作一综述,为其进一步开发利用提供参考。文献复习结果表明,PLGA作为药物/分子输送系统主要应用于盖髓材料、根管消毒剂和根尖诱导成形剂的改良。PLGA改良盖髓材料能延长药物作用时间、降低毒性;改良根管消毒剂能实现药物缓释,使药物深入更细微的结构,与致病菌有更广泛的接触;改良根尖诱导成形剂能为根尖诱导提供更便捷的给药方式。PLGA作为组织工程支架主要应用于牙髓再生的研究,通过PLGA物理性能、作用环境的不断优化为种子细胞提供更适宜增殖分化的微环境。如何合理利用PLGA的优势,研制出更适宜根管内应用的材料,还需要进一步的研究。

Application of poly(lactic?co?glycolic acid)in the treatment of pulp diseases

The development of materials science is of great significance to the treatment of dental pulp diseases.Poly lactic acid glycolic acid(PLGA)copolymer is an organic macromolecule compound that is widely used in the prepa?ration of biomedical materials.In recent years,PLGA,as a drug/molecular loaded system and tissue regeneration scaf?fold,has shown prospects for application in the treatment of dental pulp diseases.This paper will review the application of PLGA in the treatment of dental pulp diseases and provide a basis for its further development and utilization.The re?sults of the literature review show that PLGA is a drug/molecular delivery system that is mainly used in the improve?ment of pulp capping materials,root canal disinfectant and apexification materials.PLGA?improved pulp capping agents can prolong the action time of the drug and reduce toxicity.The modified root canal disinfectant can realize the sus?tained release of drug,make the drug penetrate deeper into the subtle structure,and contact more widely with the patho?genic bacteria.The modified apexification materials can provide more convenient administration methods for apexifixment. As a scaffold for tissue engineering, PLGA is mainly used in the study of pulp regeneration. The optimization ofPLGA physical properties and action environment can provide a more suitable microenvironment for seed cells to prolif?erate and differentiate. How to utilize the advantages of PLGA to develop a more suitable material for endodontic appli?cation needs further study.