Rejeneratif Endodontik Uygulamalar
Özet
Rejeneratif endodontik uygulamalar, kök hücre, büyüme faktörleri ve doku iskeleleri arasındaki etkileşimi kullanarak hasar görmüş pulpa-dentin kompleksini yenilemeyi amaçlayan biyolojik temelli tedavilerdir. Pulpa nekrozu riski taşıyan olgunlaşmamış genç daimi dişlerde geleneksel apeksifikasyon tedavileri kök gelişimini sürdüremezken, rejeneratif yöntemler kök uzamasını, apikal kapanmayı ve lateral duvar kalınlaşmasını destekler. Kök kanal dezenfeksiyonunda üçlü antibiyotik patı (TAP) bakterileri öldürmede oldukça etkilidir; ancak dişlerde renk değişimi ve kök hücrelere sitotoksik etkiler yaratabilmektedir. Kalsiyum hidroksit ise renklenmeye yol açmaması, büyüme faktörlerini aktive etmesi ve düşük sitotoksitesi nedeniyle güçlü bir alternatiftir. Revaskülarizasyon sürecinin başarısı için üç boyutlu doku iskeleleri (enjekte edilebilir hidrojeller, kan pıhtısı, PRP ve PRF) hücre tutunmasını ve çoğalmasını sağlar. Özellikle ikinci jenerasyon trombosit paketi olan PRF, sığır trombinine ihtiyaç duymadan büyüme faktörlerinin kademeli salınımını sağlayarak sürekli iyileşmeyi indükler. Doku mühendisliği kapsamında dental pulpa, süt dişi ve apikal papilla kaynaklı mezenşimal kök hücreler kullanılmakta, geleceğe yönelik gen terapisi ve üç boyutlu hücre yazılımı gibi yöntemler araştırılmaktadır. Klinik uygulaması kolay ve ekonomik olan bu tedaviler, dişe kırılma direnci kazandırarak ömrünü uzatır.
Regenerative endodontic applications are biologically-based procedures designed to restore damaged pulp-dentin complexes, leveraging interactions between stem cells, growth factors, and tissue scaffolds. While traditional apexification methods for immature permanent teeth with pulp necrosis fail to sustain root development, regenerative techniques promote root elongation, apical closure, and lateral wall thickening. For intracanal disinfection, triple antibiotic paste (TAP) is highly effective against bacteria but can cause tooth discoloration and cytotoxic effects on stem cells. Calcium hydroxide serves as a strong alternative due to its non-staining property, activation of growth factors, and lower cytotoxicity. The success of revascularization relies on three-dimensional scaffolds—such as injectable hydrogels, blood clots, PRP, and PRF—to facilitate cell attachment and proliferation. Notably, PRF, a second-generation platelet concentrate, induces continuous healing through the gradual release of growth factors without requiring bovine thrombin. Within tissue engineering, mesenchymal stem cells derived from dental pulp, exfoliated deciduous teeth, and apical papilla are utilized, while gene therapy and three-dimensional cell printing remain under active research. Being cost-effective and easy to apply, these procedures prolong tooth life by enhancing root fracture resistance.
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