Scholarlink

<p>To compare the mechanical behavior of lower premolars with incomplete root formation treated by apexification and regeneration and assess revascularization's impact on dentin thickness using finite element analysis. A mandibular bone model was obtained from a computed tomography scan and modeled using the CAD Rhinoceros 7.0 software program. The models were composed of enamel, dentin, pulp, periodontal ligament, cortical bone, medullary bone, gutta-percha, MTA, blood clot, and composite resin. The study groups were: IT (Intact Tooth); AC (Accessed Tooth); R (revascularization); and AX (apexification). After modeling the structures, the geometries were exported to the Ansys 13.0 finite element analysis software program. The models were submitted to loads of 200 N on the&#xa0;distal sulcus of the occlusal surface. The loading was directed at 45° to the occlusal plane. The results were calculated and qualitatively analyzed using displacement maps and maximum principal stress. The apexification models supported lower compressive and tensile stresses when compared to the revascularization models. Revascularization reduced stress concentration in the periradicular tissues, whereas apexification resulted in lower tensile stress in coronal dentin.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Comparative analysis of postoperative mechanical behavior of immature premolars: apexification vs regeneration

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月17日

查看全文
  • Ana Carolina da Silva,
  • Fernando César de Barros Faria Júnior,
  • Gustavo Guimarães Guerrero,
  • Alexandre Luiz Souto Borges,
  • Marcia Carneiro Valera

摘要

To compare the mechanical behavior of lower premolars with incomplete root formation treated by apexification and regeneration and assess revascularization's impact on dentin thickness using finite element analysis. A mandibular bone model was obtained from a computed tomography scan and modeled using the CAD Rhinoceros 7.0 software program. The models were composed of enamel, dentin, pulp, periodontal ligament, cortical bone, medullary bone, gutta-percha, MTA, blood clot, and composite resin. The study groups were: IT (Intact Tooth); AC (Accessed Tooth); R (revascularization); and AX (apexification). After modeling the structures, the geometries were exported to the Ansys 13.0 finite element analysis software program. The models were submitted to loads of 200 N on the distal sulcus of the occlusal surface. The loading was directed at 45° to the occlusal plane. The results were calculated and qualitatively analyzed using displacement maps and maximum principal stress. The apexification models supported lower compressive and tensile stresses when compared to the revascularization models. Revascularization reduced stress concentration in the periradicular tissues, whereas apexification resulted in lower tensile stress in coronal dentin.