REJENERATİF ENDODONTİK TEDAVİ PROTOKOLÜNE GÖRE PULPA BOŞLUĞU BARİYERİ OLARAK BİODENTİN VE MTA KULLANIMININ YAPAY OLARAK TAKLİT EDİLMİŞ OLGUNLAŞMAMIŞ KÖKE SAHİP DİŞLERİN KIRILMA DİRENÇLERİNE ETKİSİ

Amac: Bu calismanin amaci, rejeneratif endodontik tedavi prosedurune gore pulpa boslugu bariyeri olarak biodentin (BD) ve mineral trioksit agregat (MTA)in kullanimi sonrasi yapay olarak taklit edilmis olgunlasmamis koke sahip dislerin uzun sureli kirilma direncini karsilastirmali olarak incelemektir. Materyal Metot: 80 adet cekilmis maksiller santral dis, her biri 20 disten olusan 4 gruba ayrildi. Pozitif kontrol grubundaki dislere herhangi bir tedavi uygulanmadi. Kalan disler apikal foramenden 1 mm cikilarak 6 Nolu Peeso Freze kadar genisletildi. Kok kanallarinin irrigasyon ve dezenfeksiyonu Amerikan Endodontistler Birligi’nin onerdigi rejeneratif endodonti prosedurune gore yapildi. Kanallarin koronal kismi mine-sement birlesiminin yaklasik 3 mm altina kadar MTA ya da Biodentin ile dolduruldu. Negatif kontrol grubundaki kanallar prepare edildigi halde bos birakildi. Koronal giris kavitesi, cam iyonomer ve bunu takiben kompozit rezin ile restore edildi. Disler fosfat tamponlu salin cozeltisine kondu ve 3 ay boyunca saklandi. Daha sonra her ornek, universal test makinesi kullanilarak kirilma testine tabi tutuldu. Maksimum kirilma yuku kaydedildi ve veriler istatistiksel olarak analiz edildi. Bulgular: Pozitif kontrol grubu en yuksek kirilma direncine sahipti. Negatif kontrol grubundaki kirilma direnci diger gruplara gore anlamli derecede dusuktu(P 0.05). Sonuc: Rejeneratif endodontik tedavi goren enfekte pulpali olgunlasmamis dislerde servikal kok kirilma direnci bakimindan MTA ve Biodentin arasinda onemli bir fark yoktur. Anahtar Kelimeler: MTA,Biodentin, Olgunlasmamis Dis, Regeneratif Endodonti, Travma Effect of Using Biodentine and Mineral Trioxide Aggregate (MTA) as a Pulp Space Barrier For Regenerative Endodontic Procedures on the Fracture Resistance of Simulated Teeth With Immature Roots. ABSTRACT Aim: The aim of this study was to evaluate the long-term fracture resistance of simulated immature teeth loaded with Biodentine and mineral trioxide aggregate (MTA) as pulp cavity barriers for regenerative endodontic procedures. Materials and Methods: Eighty extracted human maxillary anterior teeth were allocated into four groups of 20 teeth each. No procedure was applied to the teeth in the positive control group. The remaining teeth were prepared until a size 6 Peeso (1.7 mm) could be passed 1 mm beyond the apex. The root canals were irrigated and disinfected according to American Association of Endodontists considerations for regenerative endodontic procedures . The canals were filled with either Biodentine or MTA to approximately 3 mm below the cemento enamel junction. The negative control canals were left unfilled. The coronal access cavities were restored with glass ionomer followed by composite resin. The teeth were placed in phosphate-buffered saline solution and stored for 3 months. Each specimen was then subjected to fracture testing using a universal testing machine. The peak load to fracture and the fracture resistance were recorded, and the data were analysed statistically. Results: The positive control group had the highest fracture resistance and differed significantly (P 0.05). Conclusions: Considering the risk of cervical root fracture for pulpless infected immature teeth treated with regenerative endodontic procedures , there was no difference between MTA and Biodentine regarding the resistance to root fracture. Key Words: MTA,Biodentine, Immature Teeth, Regenerative Endodontics , Trauma,