Post Endodontik Restorasyonlarda Kullanılan Post-Kor Sistemlerinin Kırılma Dayanımı Açısından Değerlendirilmesi

Öz

Amaç: Bu çalışma ile fazla madde kaybına uğramış endodontik tedavili dişlerin restorasyonunda kullanılan farklı post-kor sistemlerini kırılma dayanımları açısından karşılaştırmak amaçlandı. Gereç ve Yöntem: Çalışmada çekilmiş, tek köklü, tek kanallı 45 adet kronu uzaklaştırılmış insan alt premolar dişi kullanıldı. Dişlere kök kanal tedavisi uygulandıktan sonra kök kanallarına post yuvası açıldı. Dişler 3 gruba ayrılarak Grup 1’e cam fiber post-kompozit kor, Grup 2’ye kompozit post-kor, Grup 3’e ise lityum disilikat post-kor hazırlandı. Daha sonra dişlere universal test cihazında kuvvet uygulanarak kırılma dayanımı değerleri tespit edildi ve dişlerde oluşan kırık tipleri incelendi. Verilerin istatistiksel analizinde Bonferroni ve Shapiro-Wilk testleri kullanıldı. Bulgular: Elde edilen sonuçların istatistiksel değerlendirmesi sonucunda grupların kırılma dayanımı değerleri arasında istatistiksel olarak anlamlı bir farklılık tespit edildi (p<0,05). Fiber post-kompozit kor grubundaki dişlerin kırılma dayanımı diğer iki gruptan anlamlı olarak düşük çıkarken, kompozit post-kor ve lityum disilikat post-kor grupları arasında kırılma dayanımını açısından fark bulunmadı. Fiber post-kompozit kor grubunda restore edilebilir kırık tipi, kompozit post-kor ve lityum disilikat post-kor gruplarında ise restore edilemez kırık tipleri daha fazla görüldü. Sonuç: Bu çalışmanın sınırları dahilinde, kısa post uygulamalarında, fiber post-kompozit kor grubunun kırılma dayanımı kompozit post-kor ve lityum disilikat post-kor gruplarına göre daha düşük bulundu. Ayrıca fiber post- kompozit kor grubundaki kırık tiplerinin daha restore edilebilir olduğu gözlendi.

Anahtar Kelimeler

• Fiber post
• Kırılma dayanımı
• Post-kor

Comparasion of Fracture Strength of Post-Core Systems used in Post-Endodontic Restorations

Öz

Objective: The aim of this study was to compare the fracture strength of different post-core systems used in the restoration of endodontically treated teeth with excessive material loss. Materials and Methods: Forty-five single and straight-root decoronated human mandibular premolar teeth were used. After root canal treatment, post space preparation have been made. Teeth were randomly divided into three groups : Group 1 glass fiber post-composite core, Group 2 composite post-core, Group 3 lithium disilicate post-core.For all groups, fracture resistance (N) value was measured and recorded using a universal testing machine. The types of fractures in the teeth were examined. Bonferroni and Shapiro-Wilk tests were used for statistical analysis of the data. Results: As a result of the statistical evaluation of the results obtained, a statistically significant difference was found between the fracture strength values of the groups (p<0.05). The fracture strength of the teeth in the fiber post-composite core group was significantly lower than the other two groups, while there was no significant difference in fracture strength between the composite post-core and lithium disilicate post-core groups. Restorable fracture types were more common in the fiber post-composite core group, while unrestorable fracture types were more common in the composite post-core and lithium disilicate post-core groups. Conclusion: Within the limitations of this study, in short post applications, the fracture strength of the fiber post-composite core group was lower than the composite post-core and lithium disilicate post-core groups, and the fracture types in the fiber post-composite core group were more restorable.

Anahtar Kelimeler

• Fiber post
• Fracture resistance
• Post-core

Kaynakça

1. 1. Alaçam T, Nalbant L, Alaçam A.1998. İleri restorasyon teknikleri. Ankara, Polat Yayınları, 3.
2. 2. Tait CME, Ricketts DNJ, Higgins AJ. 2005. Restoration of the root-filled tooth: pre-operative assessment. Br Dent J. ;198(7):395-404.
3. 3. Bateman G, Ricketts DNJ, Saunders WP. 2003. Fibre-based post systems: a review. Br Dent J.;195(1):43-8; discussion 37.
4. 4. Cheung W. 2005. A review of the management of endodontically treated teeth. The Journal of the American Dental Association.;136(5):611-9.
5. 5. Boschian Pest L, Cavalli G, Bertani P, Gagliani M. 2002. Adhesive post-endodontic restorations with fiber posts: push-out tests and SEM observations. Dent Mater.;18(8):596-602.
6. 6. Dean JP, Jeansonne BG, Sarkar N. 1998. In vitro evaluation of a carbon fiber post. J Endod.;24(12):807-10.
7. 7. Al-Haj Husain N, Özcan M, Molinero-Mourelle P, Joda T. 2020. Clinical Performance of Partial and Full-Coverage Fixed Dental Restorations Fabricated from Hybrid Polymer and Ceramic CAD/CAM Materials: A Systematic Review and Meta-Analysis. J Clin Med.;9(7):2107.
8. 8. Sulaiman TA. 2020. Materials in digital dentistry-A review. J Esthet Restor Dent.;32(2):171-81.

9. 9. Reis, J. M. D. S. N., Oliveira, C. R. D. M., Reis, E. G., Mascaro, B. A., & Abi‐Rached, F. D. O. (2020). One‐step fiber post cementation and core build‐up in endodontically treated tooth: A clinical case report. Journal of Esthetic and Restorative Dentistry, 32(1), 5-11.
10. 10. Bitter K, Gläser C, Neuman K, et al. Analysis of resin-dentin interface morphology and bond strength evaluation of core materials for one stage post-endodontic restorations. PLoS ONE. 2014;9(2):e86294.
11. 11. Tsukahara R, Komada W, Oishi S, Yoshimatsu S, Miura H, Fueki K. 2023. Fracture strength of flared root canals reinforced using different post and core materials. J Prosthodont.;32(7):639-45.
12. 12. Ekren O. 2017. Farklı post-kor sistemlerinin kırılma dayanımının in-vitro olarak değerlendirilmesi. Ata Diş Hek Fak Derg.;27(1):43-7.
13. 13. Pang J, Feng C, Zhu X, Liu B, Deng T, Gao Y, vd. 2019. Fracture behaviors of maxillary central incisors with flared root canals restored with CAD/CAM integrated glass fiber post-and-core. Dent Mater J.;38(1):114-9.
14. 14. Öztürk, C., Polat, S., Tunçdemir, M., Gönüldaş, F., & Şeker, E. 2019 . Evaluation of the fracture resistance of root filled thin walled teeth restored with different post systems. biomedical journal, 42(1), 53-58.
15. 15. Hegde, J., & Bashetty, K. 2012 . An in vitro evaluation of fracture strength of endodontically treated teeth with simulated flared root canals restored with different post and core systems. Journal of Conservative Dentistry, 15(3), 223-227.
16. 16. Jurema ALB, Filgueiras AT, Santos KA, Bresciani E, Caneppele TMF. 2022. Effect of intraradicular fiber post on the fracture resistance of endodontically treated and restored anterior teeth: A systematic review and meta-analysis. J Prosthet Dent.;128(1):13-24.
17. 17. Braga RR, Boaro LC, Kuroe T, Azevedo CL, Singer JM. 2006. Influence of cavity dimensions and their derivates (volume and “C” factor) on shrinkage stress development and microleakage of composite restorations. Dent Mater;22:818-823.
18. 18. de Andrade GS, Tribst JPM, Dal Piva AM de O, Bottino MA, Borges ALS, Valandro LF, vd. 2019 .A study on stress distribution to cement layer and root dentin for post and cores made of CAD/CAM materials with different elasticity modulus in the absence of ferrule. J Clin Exp Dent.;11(1):e1-8.
19. 19. Gomes ÉA, Gueleri DB, da Silva SR, Ribeiro RF, Silva-Sousa YT. 2015. Three- dimensional finite element analysis of endodontically treated teeth with weakened radicular walls restored with different protocols. J Prosthet Dent ;114:383-389.