Abstract
Detachment is the major cause of failure of endodontic fibre posts. Hollow posts have been recently introduced to overcome such issue. The primary aim of this pilot study was to compare the push-out bond strength of hollow posts and traditional solid posts. Eight round-shaped single-canal premolars extracted for periodontal reason were selected as sample and equally randomized into two groups: (i) traditional solid fibre posts-TECH21xop and ii) hollow fibre posts-TECHOLE. A dual-curing self-adhesive cement (new TECHCEM) was used for posts placement. Six horizontal sections—two from each portion of the root (coronal, middle and apical)—were obtained from each sample root, yielding a total of 24 sections for each group. Push-out test was performed on the sections and bond strength values were compared between groups and within each group. Scanning electron microscope (SEM) fractographical analysis was conducted on each section. Additional SEM and EDX analyses were performed on new samples of both posts, to assess fibres density and distribution, and the chemical composition of the fibres and the matrix. Hollow posts showed a significantly higher push-out bond strength (6.36 ± 1.22 MPa) than solid posts (3.64 ± 1.62 MPa). Among the three root portions of the same group, there was no significant difference in bond strength. In both groups, the most frequent type of fracture was a mixed adhesive failure with the cement covering 0 to 50% of the post perimeter. Hollow post fibres appear more similar in size and have a more homogeneous distribution, compared to solid posts. The two post types also have different chemical compositions.
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References
Reeh ES, Messer HH, Douglas WH. Reduction in tooth stiffness as a result of endodontic and restorative procedures. J Endod. 1989;15(11):512–6. https://doi.org/10.1016/S0099-2399(89)80191-8.
Lambjerg-Hansen H, Asmussen E. Mechanical properties of endodontic posts. J Oral Rehabil. 1997;24(12):882–7. https://doi.org/10.1046/j.1365-2842.1997.00598.x.
Tsintsadze N, Margvelashvili-Malament M, Natto ZS, Ferrari M. Comparing survival rates of endodontically treated teeth restored either with glass-fiber-reinforced or metal posts: a systematic review and meta-analyses. J Prosthet Dent. 2022. https://doi.org/10.1016/j.prosdent.2022.01.003.
Sonkesriya S, Olekar ST, Saravanan V, Somasunderam P, Chauhan RS, Chaurasia VR. An in vitro comparative evaluation of fracture resistance of custom made, metal, glass fiber reinforced and carbon reinforced posts in endodontically treated teeth. J Int Oral Health. 2015;7(5):53.
Zhou L, Wang Q. Comparison of fracture resistance between cast posts and fiber posts: a meta-analysis of literature. J Endod. 2013;39(1):11–5. https://doi.org/10.1016/j.joen.2012.09.026.
Cheung W. A review of the management of endodontically treated teeth. JADA. 2005;136(5):611–9. https://doi.org/10.14219/jada.archive.2005.0232.
Parisi C, Valandro LF, Ciocca L, Gatto MRA, Baldissara P. Clinical outcomes and success rates of quartz fiber post restorations: a retrospective study. J Prosthet Dent. 2015;114(3):367–72. https://doi.org/10.1016/j.prosdent.2015.03.011.
Cecchin D, Farina AP, Vitti RP, Moraes RR, Bacchi A, Spazzin AO. Acid etching and surface coating of glass-fiber posts: bond strength and interface analysis. Braz Dent J. 2016;27(2):228–33. https://doi.org/10.1590/0103-6440201600722.
Lo Giudice G, Ferrari Cagidiaco E, Lo Giudice R, Puleio F, Nicita F, Calapaj M. Evaluation of mechanical properties of a hollow endodontic post by three point test and SEM analysis: a pilot study. Materials. 2019;12(12):1983. https://doi.org/10.3390/ma12121983.
Dietschi D, Duc O, Krejci I, Sadan A. Biomechanical considerations for the restoration of endodontically treated teeth: a systematic review of the literature, part II (evaluation of fatigue behavior, interfaces, and in vivo studies). Quintessence Int. 2008;39(2):117–29.
Bovolato L, Tonini R, Boschi G, Cavalli G, Salgarello SA. Novel hollow fiber sandwich composite post system: mechanical characteristics. Minerva Stomatol. 2020. https://doi.org/10.23736/S0026-4970.19.04235-3.
De-Deus G, Reis C, Beznos D, de Abranches AMG, Coutinho-Filho T, Paciornik S. Limited ability of three commonly used thermoplasticized gutta-percha techniques in filling oval-shaped canals. J Endod. 2008;34(11):1401–5. https://doi.org/10.1016/j.joen.2008.08.015.
Lee OYS, Khan K, Li KY, Shetty H, Abiad RS, Cheung GSP, et al. Influence of apical preparation size and irrigation technique on root canal debridement: a histological analysis of round and oval root canals. Int Endod J. 2019;52(9):1366–76. https://doi.org/10.1111/iej.13127.
Costa TS, Brandão RMR, Farias Vajgel BC, SoutoMaior JR. CAD-CAM glass fiber compared with conventional prefabricated glass fiber posts: a systematic review. J Prosthet Dent. 2022. https://doi.org/10.1016/j.prosdent.2022.01.007.
Soares CJ, Pereira JC, Valdivia ADCM, Novais VR, Meneses MS. Influence of resin cement and post configuration on bond strength to root dentine: effect of post configuration on bond strength. Int Endod J. 2012;45(2):136–45. https://doi.org/10.1111/j.1365-2591.2011.01953.x.
Türker SA, Özçelik B, Yilmaz Z. Evaluation of the bond strength and fracture resistance of different post systems. J Contemp Dent Pract. 2015;16(10):788–93. https://doi.org/10.5005/jp-journals-10024-1758.
Goracci C, Tavares AU, Fabianelli A, Monticelli F, Raffaelli O, Cardoso PC, et al. The adhesion between fiber posts and root canal walls: comparison between microtensile and push-out bond strength measurements. Eur J Oral Sci. 2004;112(4):353–61. https://doi.org/10.1111/j.1600-0722.2004.00146.x.
Zhu L, Li Y, Chen Y-C, Carrera CA, Wu C, Fok A. Comparison between two post-dentin bond strength measurement methods. Sci Rep. 2018;8(1):2350. https://doi.org/10.1038/s41598-018-20891-3.
Amaral M, Rippe MP, Bergoli CD, Monaco C, Valandro LF. Multi-step adhesive cementation versus one-step adhesive cementation: push-out bond strength between fiber post and root dentin before and after mechanical cycling. Gen Dent. 2011;59(5):e185-191.
Durski M, Metz M, Thompson J, Mascarenhas A, Crim G, Vieira S, et al. Push-out bond strength evaluation of glass fiber posts with different resin cements and application techniques. Oper Dent. 2016;41(1):103–10. https://doi.org/10.2341/14-343-L.
Pereira JR, da Abreu RR, do Lins ValleGhizoniReis Só Shiratori AJSMVFK. The influence of different cements on the pull-out bond strength of fiber posts. J Prosthet Dent. 2014;112(1):59–63. https://doi.org/10.1016/j.prosdent.2013.10.009.
Amiri EM, Balouch F, Atri F. Effect of self-adhesive and separate etch adhesive dual cure resin cements on the bond strength of fiber post to dentin at different parts of the root. J Dent (Tehran). 2017;14(3):153–8.
Goracci C, Corciolani G, Vichi A, Ferrari M. Light-transmitting ability of marketed fiber posts. J Dent Res. 2008;87(12):1122–6. https://doi.org/10.1177/154405910808701208.
Abo-Hamar SE, Hiller K-A, Jung H, Federlin M, Friedl K-H, Schmalz G. Bond strength of a new universal self-adhesive resin luting cement to dentin and enamel. Clin Oral Invest. 2005;9(3):161–7. https://doi.org/10.1007/s00784-005-0308-5.
Baldea B, Furtos G, Antal M, Nagy K, Popescu D, Nica L. Push-out bond strength and SEM analysis of two self-adhesive resin cements: An in vitro study. J Dent Sci. 2013;8(3):296–305. https://doi.org/10.1016/j.jds.2013.01.007.
Mohammadi Z, Yaripour S, Shalavi S, Palazzi F, Asgary S. Root canal irrigants and dentin bonding: an update. Iran Endod J. 2017;12(2):131–6. https://doi.org/10.22037/iej.2017.27.
Calixto L, Bandéca M, Clavijo V, Andrade M, Lg Vaz, Campos E. Effect of resin cement system and root region on the push-out bond strength of a translucent fiber post. Oper Dent. 2012;37(1):80–6. https://doi.org/10.2341/11-035-L.
Scotti N, Forniglia A, Bergantin E, Paolino DS, Pasqualini D, Berutti E. Fibre post adaptation and bond strength in oval canals. Int Endod J. 2014;47(4):366–72. https://doi.org/10.1111/iej.12156.
Pereira JR, Pamato S, Santini MF, Porto VC, Ricci WA, Só MVR. Push-out bond strength of fiberglass posts cemented with adhesive and self-adhesive resin cements according to the root canal surface. Saudi Dent J. 2021;33(1):22–6. https://doi.org/10.1016/j.sdentj.2019.11.009.
Gu X-H, Mao C-Y, Liang C, Wang H-M, Kern M. Does endodontic post space irrigation affect smear layer removal and bonding effectiveness? Eur J Oral Sci. 2009;117(5):597–603. https://doi.org/10.1111/j.1600-0722.2009.00661.x.
Giachetti L, Scaminaci Russo D, Baldini M, Bertini F, Steier L, Ferrari M. Push-out strength of translucent fibre posts cemented using a dual-curing technique or a light-curing self-adhering material. Int Endod J. 2012;45(3):249–56. https://doi.org/10.1111/j.1365-2591.2011.01969.x.
Cekic-Nagas I, Shinya A, Ergun G, Pk Vallittu, Lvj Lassila. Biomechanical behavior of cavity configuration on micropush-out test: A finite-element-study. Med Oral. 2011. https://doi.org/10.4317/medoral.16.e119.
Rezende EC, Gomes GM, Szesz AL, da Silveira Bueno CE, Reis A, Loguercio AD. Effects of dentin moisture on cementation of fiber posts to root canals. J Adhes Dent. 2016;18(1):29–34. https://doi.org/10.3290/j.jad.a35516.
Arora J, Talwar I, Sahni D, Rattan V. Morphology and age-related changes in calcospherites of human teeth: an ultrastructural study. Ann Hum Biol. 2017;44(4):349–56. https://doi.org/10.1080/03014460.2016.1270353.
Karkera R, Raj APN, Isaac L, Mustafa M, Reddy RN, Thomas M. Comparison of the solubility of conventional luting cements with that of the polyacid modified composite luting cement and resin-modified glass lonomer cement. J Contemp Dent Pract. 2016;17(12):1016–21.
Goracci C, Ferrari M. Current perspectives on post systems: a literature review: post systems. Aust Dent J. 2011;56:77–83. https://doi.org/10.1111/j.1834-7819.2010.01298.x.
Carek A, Dukaric K, Miler H, Marovic D, Tarle Z, Par M. Post-cure development of the degree of conversion and mechanical properties of dual-curing resin cements. Polymers. 2022;14(17):3649. https://doi.org/10.3390/polym14173649.
Niitsuma A, Shinya A, Shiratori S, Kuroda S, Hatta M, Gomi H. Effects of filling technique and light irradiation distance on the push-out bond strength of dual and light cured core materials in a direct core build-up. J Mol Eng Mater. 2017;05(04):1740008. https://doi.org/10.1142/S2251237317400081.
Ferreira R, Prado M, de Jesus Soares A, Zaia AA, de Souza-Filho FJ. Influence of using clinical microscope as auxiliary to perform mechanical cleaning of post space: a bond strength analysis. J Endod. 2015;41(8):1311–6. https://doi.org/10.1016/j.joen.2015.05.003.
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Generali, L., Veneri, F., Forabosco, E. et al. Push-out bond strength and SEM fractographical analysis of hollow fibre posts used with self-adhesive resin cement: a pilot study. Odontology 112, 158–168 (2024). https://doi.org/10.1007/s10266-023-00820-1
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DOI: https://doi.org/10.1007/s10266-023-00820-1