Evaluation of fracture resistance of restored and endodontically treated teeth with different intraradicular retainers





Flexural strength; Post and core technique; Composite resins.


The objective of this study was to evaluate the fracture resistance of fragile premolars after restoration with different intraradicular retainers. For the fracture resistance test, 30 upper premolars were divided into three experimental groups (n=10), with G1 consisting of healthy teeth (control group); group G2 - teeth with fiberglass post (Reforpost, Angelus) and direct restoration with Filtek Z250 microhybrid resin (3M ESPE) and G3 - Teeth with polyethylene fiber (Ribbond Inc.) and direct restoration with Filtek microhybrid composite resin Z250 (3M ESPE). The samples were submitted to the fracture resistance test and the failures were evaluated. The results were analyzed using the Anova and T Test for fracture resistance, and the Kruskal-Wallis Test for the location and type of fracture, with p<0.05 always being used as the confidence level. The G1 group had the highest values, with 503.12N (+/- 262.20), with a statistical difference from the G2 and G3 groups, which had similar values ​​(p<0.05) for fracture resistance and for fracture location the most common among the three groups was the neck. It can be concluded that the restorations using fiber post and polyethylene fiber used as intraradicular retainers provided similar results in fracture resistance tests, demonstrating that the polyethylene fiber used as retainer can be considered as an option for the rehabilitation of endodontically treated teeth.


Abdulkadir, S., Cobankara, F. K. & Orucoglu, H. O. (2008). Effect of a new restoration technique on fracture resistance of endodontically treated teeth. Dent. Traumatol., 24(2): 214-219.

Akkayan, B. & Gülmez, T. (2002). Resistance to fracture endodontically treated teeth restored with different post systems. J. Prosth. Dent, 87(4): 431-437.

Akman, S., Akman, M., Eskitascioglus, G. & Belli, S. (2011). Influence of several fibre-reinforced composite restoration techniques on cusp movement and fracture strength of molar teeth. Int. Endod. J., 44 (5): 407-415.

Aleisa, K., Alghabban, R., Alwa-Zzan, K. & Morgano, S. M. (2012). Effect of three endodontic sealers on the bond strength of prefabricated fiber posts luted with three resin cements. J. Prosthet. Dent., 107(5): 322-326.

Arhun, N. & Arman, A. (2008). Fiber reinforced technology in multidisciplinary chairside approaches. Indian. J. Dent., 19(3): 272-277.

Ashutosh, B. & Palepwad, R. S. K. (2020). In vitro fracture resistance of zirconia, glass‐ ber, and cast metal posts with different lengths. The Journal of Indian Prosthodontic Society, 20(2): 202-206.

Ayna, B., Elenk, S. C., Atakul, F. & Uysa, E. (2009). Three-year clinical evaluation of endodontically treated anterior teeth restored with a polyethylene fibre-reinforced composite. Aust. Dent. J., 54(2): 136-140.

Baba, N. Z., Golden, G. & Goodacre, C. J. (2009). Nonmetallic prefabricate dowels: a review of compositions, properties, laboratory and clinical test results. J. Prosthodont., 18(6): 527–536.

Barbosa, I.F., Barreto, B.C.T., Coelho, M.O., Perreira, G.D.S. & Carvalho, Z.M.C. (2016). Pinos de Fibra: Revisão de Literatura. Rev .Uninguá Review, 28: 83-87.

BaşAran, E. G., Ayna, E. & HalifeoğLu, M. (2012) Microleakage of endodontically treated teeth restored with 3 different adhesive systems and 4 different fiber-reinforced posts. J. Prosthet. Dent., 107(4): 239-251.

Braga, M. R., Messias, D. C., Macedo, L. M., Silva-Sousa, Y. C. & Gabriel, A. E. (2015) Rehabilitation of weakened premolars with a new polyfiber post and adhesive materials. Indian J Dent Res 26:400-405

BüTtel, L., Krastl, G., Lorch, H., Naumann, M., Zitzmann, N. U. & Weiger, R. (2009). Influence of post fit and post length on fracture resistance. Int. Endod. J., 42(1): 47-53.

Calixto, l. r., Bandéca, m. c., Clavijo, v., Andrade. m. f., Vaz, l. g. & Campos, E. A. (2012). Effect of Resin Cement System and Root Region on the Push-out Bond Strength of a Translucent Fiber Post. Oper. Dent., 37(1): 80-86.

Dermarco, F. F., Collares K., Coelho-De-Souza, F. H., Correa M. B., Cenci, M.S., Moraes, R. R. & Odpam N. J. (2015). Anterior Composite Restorations: A Systematic Review on log-term Survival and Reasons for Failure. Dent. Matter, 31(10):1214-24.

Erdemir, U., Mumcu, E., Topcu, F. T., Yildiz, E., Yamanel, K. & Akyol, M. (2010) Micro push-out bond strengths of 2 fiber post types luted using different adhesive strategies. Oral. Surg. Oral. Med. Oral. Pathol. Oral. Radiol. Endod., 110(4): 534-544.

Erkut, S., Gulsahi, K., Caglar, A., İmirzahoglu, P., Karbhari, V. M. & ÖZmen, I. (2008). Microleakage in overflared root canals restored with different fiber reinforced dowels. Oper. Dent., 33(1): 92-101.

Freitas, T. L., Vitti, R. P., Miranda, M. E. & Brandt, W.C. (2019). Effect of Glass Fiber Post Adaptation on Push-Out Bond Strength to Root Dentin. Braz Dent J., 30(4): 350-355.

Gallicchio, V., Lodato, V., De Santis, R. & Rengo, S. (2022). Fracture Strength and Failure Modes of Endodontically Treated Premolars Restored with Compact and Hollow Composite Posts Subjected to Cyclic Fatigue. Materials, 15:1141.

Giovani, A. R., Vansan, L.P., de Sousa Neto, M. D. & Paulino, S. M. (2009). In vitro fracture resistance of glass‐ ber and cast metal posts with different lengths. J Prosthet Dent, 101:183-8.

Godas, A. G. L., Suzukityu, O. R. B., Briso, A. L. F., Assunção, W.G. & Dos Santos, P. H. (2020). Effect of glass fiber post customization on the mechanical properties of resin cement and underlying dentin. Gen Dent, 68(1): 72-77

Gonçalves, L. A., Vansan, L. P., Paulino, S. M. & Sousa Neto, M. D. (2006). Fracture resistance of weak - ened roots restored with a transilluminating post and adhesive restorative materials. J. Prosthet. Dent., 96(5): 339-344.

Goracci, C. & Ferrari, M. (2011). Current perspectives on post systems: a literature review. Aust. Dent. J., 56(1): 77-83.

Hemalatha, H., Sandeep, M., Kulkarni, S. & Yakub, S. S. (2009). Evaluation of fracture resistance in simulated immature teeth using resilon and ribbond as root reinforcements – An in vitro study. Dent. Traumatol., 25(4): 433-438.

Hshad, M. E., Dalkılıç, E. E., Ozturk, G. C., Dogruer, I. & Koray, F. (2018). Influence of Differente Restoration Techniques on Fracture Resistance od Root-filled Teeth: In Vitro Investigation. Oper Dent, 43(2): 162-169.

Hurmuzlu, F., Serper, A., Siso, S. H. & Er, K. (2003) In vitro fracture resistance of root-filled teeth using new-generation dentine bonding adhesives. Int. Endod. J., 36(11): 770-773.

Jurema, A. L. B., Filgueras, A. T., Santos, K. A., Besciani, E. & Caneppele, T. M. F., (2022) Systematic Review Effect of intraradicular fiber post on the fracture resistance of endodontically treated and restored anterior teeth: A systematic review and meta-analysis. The Journal Of Prosthetic Dentistry, 128(1): 13-24.

Khurana, D., Prasad, A. B., Raisingani, D., et al. (2021). Comparison of Ribbond and Everstick Post in Reinforcing the Re-attached Maxillary Incisors Having Two Oblique Fracture Patterns: An In Vitro Study. Int J Clin Pediatr Dent, 14(5): 689-692.

Kremeier, K., Fasen, L., Klaiber, B. & Hofmann, N. (2008). Influence of endodontic post type (glass fiber, quartz fiber or gold) and luting material on push-out bond strength to dentin in vitro. Dent. Mater., 24(5): 660-666.

Machado, A. C., Reinke, A. C. M. A., Moura, G. F., Zeola, L. F., Costa, M. M., Reis, B. R. & Soares, P.V. (2016). A Esthetic and Funcional Rehabilitation With Direct Veneers After Dento-Alveolar Trauma. Ver. Odontol. Bras. Central, 2016:25-74.

Makade, C. S., Meshram, G. K., Warhadpande, M. & Patil, P. G. (2011). A comparative evaluation of fracture resistance of endodontically treated teeth restored with different post core systems - an in-vitro study. J. Adhes. Prosth., 3(2): 90-95.

Mastoras, K., Vasiliadis, L., Koulaouzidou, E. & Gogos, C. Evaluation of Push-out Bond Strength of Two Endodontic Post Systems. (2012). J. Endod., 38(4): 510-514.

Memon, S., Mehta, S., Salim Malik, M. M., Sharma, D. & Arora, H. (2016). Three- dimensional nite element analysis of the stress distribution in the endodontically treated maxillary central incisor by glass ber post and dentin post. J Indian Prosthodont Soc, 16:70-4.

Moosavi, H., Zeynali, M. & Pour, Z. H. (2012) Fracture Resistance of Premolars Restored by Various Types and Placement Techniques of Resin Composites. Int. J. Dent., 14(1): 1-5.

Nilavarasan, N., Hemalatha, R., Vijayakumar, R. & Hariharan V. S. (2016). Comparison of compressive strength among three different intracanal post materials in primary anterior teeth: An in vitro study. Eur J Dent, 10:464-8.

Novais, V. R., Rodrigues, R. B., Simamoto Júnior, P. C., Correr-Sobrinho, L. & Soares, C. J. (2016). Correlation Between theMechanical Properties Characteristics of different Fiber Posts Systems. Braz Dent., 27(!): 46-51

Oliveira, R. R., Vermudt, A, Ghizoni, J. S., Pereira, J.R. & Pamato, S. (2018). Resistência à Fratura de Dentes Reforçados com Pinos Pré-Fabricados: Revisão de Literatura. J.of Research in Dentistry, 6(2): 35-45.

Özlek, E., Neelakantan, P., Matinlinna, J. P., Belli, S., Ugur, M. & Kavut, I. (2019). Adhesion of Two New Glass Fiber Post Systems Cemented with Self-Adhesive Resin Cements. Dent J (Basel), 7(3): 80.

Palepwad A, B. & Kulkarni, R. S. (2020). In vitro fracture resistance of zirconia, glass-ber, and cast metal posts with different lengths. The Journal of Indian Prosthodontic Society. 20(2): 202-206.

Perdigão, J., Gomes, G. & Lee, I. K. (2006). The effect of silane on the bond strengths of fiber posts. Dent. Mat., 22(8): 752-758.

Pruthi, V., Talwar, S., Nawal, R. R., Pruthi, P. J., Choudhary, S. & Yadav, S., (2018). Avaliação da retenção e resistência à fratura de diferentes pinos reforçados com fibra: um estudo in vitro. J Conserv Dent, 21(2): 157-161.

Rosentritt, M., Naumann, M., Hahnel, S., Handel, G. & Reill, M. (2009). Evaluation of tooth analogs and type of restoration on the fracture resistance of post and core restored incisors. J. Biomed. Mater. Res. B. Appl. Biomater., 91(1): 272-276.

Salameh, Z., Sorrentino, R., Papacchini, F., Et al. (2006). Fracture resistance and failure patterns of endodontically treated mandibular molars restored using resin composite with or without translucent glass fiber posts. J Endod., 32(8): 752-755.

Schwartz, R.S. & Robbins, J.W. (2004) Post placement and restoration of endodontically treated teeth: a literature review J Endod, 30:289–301.

Scotti, N., Scansetti, M., Rota, R., Pera, F., Pasqualini, D. & Berutti, E. (2011). The effect of the post length and cusp coverage on the cycling and static load of endodontically treated maxillary premolars. Clin. Oral. Investig., 15(6): 923-929.

Sengun, A., Cobankara, F. K. & Orucoglu, H. (2008). Effect of a new restoration technique on fracture resistance of endodontically treated teeth. Dent. Traumat., 24(2): 214-219.

Soares, C. J., Pereira, J. C., Valdivia, A. D., Novais, V. R., & Meneses, M. S. (2012) Influence of resin cement and post configuration on bond strength to root dentine. International Endodontic Journal, 45: 136-45.

Sonkesriya, S., Olenkar, S. T., Saravanan, V., Somasunderam, P., Chauhan, R. S. & Chaurasaia, V. R. (2015). Na in vitro comparative evaluation of frature resistance of custom made, metal, glass fiber reinforced and carbon reinforced posts in endodontically treated teeth. J Int Oral Health, 7(50): 53-5

Taha. N. A., Palamara. J. E. & Messer, H. H. (2011) Fracture strength and fracture patterns of root filled teeth restored with direct resin restorations. J. Dent., 39(8): 527-535.

Tay, F.R. & Pashley, D.H. (2007). Monoblocks in root canals: a hypothetical or a tangible goal. J Endod., 33: 391–8.

Teixeira, C. S., Silva-Sousa, Y. T. & Sousa-Neto, M. D. (2009). Bond strength of fiber posts to weakened roots after resin restoration with different light-curing times. J. Endod., 35(7): 1034-1039.

Wu, X., Chan, A. T., Chen, Y. M., Yip, K. H. & Smales, R. J. (2007). Effectiveness and dentin bond strengths of two materials for reinforcing thin-walled roots. Dent Mater., 23(4): 479-485.



How to Cite

BRAGA, M. R. C. L. .; SENA, N. .; PAULO JUNIOR, M. .; OLIVEIRA, T. T. .; MACEDO NETO, J. C. de .; CALDERON, P.; OLIVEIRA, J. A. de . Evaluation of fracture resistance of restored and endodontically treated teeth with different intraradicular retainers. Research, Society and Development, [S. l.], v. 12, n. 4, p. e0112441336, 2023. DOI: 10.33448/rsd-v12i4.41336. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/41336. Acesso em: 9 jun. 2023.



Health Sciences