Gulabivala K, Ng YL. Factors that affect the outcomes of root canal treatment and retreatment-a reframing of the principles. Int Endod J. 2023;56:82–115.

Article  PubMed  Google Scholar 

Karobari MI, Veeraraghavan VP, Nagarathna PJ, Varma SR, Kodangattil Narayanan J, Patil SR. Predictive analysis of root canal morphology in relation to root canal treatment failures: a retrospective study. Front Dent Med. 2025;6:1540038.

Article  PubMed  PubMed Central  Google Scholar 

Karobari MI, Batul R, Khan M, Patil SR, Basheer SN, Rezallah NNF, et al. Micro computed tomography (Micro-CT) characterization of root and root canal morphology of mandibular first premolars: a systematic review and meta-analysis. BMC Oral Health. 2024;24:1.

Article  PubMed  PubMed Central  Google Scholar 

Keleş A, Keskin C, Versiani MA. Micro-CT assessment of radicular pulp calcifications in extracted maxillary first molar teeth. Clin Oral Investig. 2022;26:1353–60.

Article  PubMed  Google Scholar 

Keles A, Keskin C. Deviations of mesial root canals of mandibular first molar teeth at the apical third: a micro–computed tomographic study. J Endod. 2018;44:1030–2.

Article  PubMed  Google Scholar 

Gani OA, Boiero CF, Correa C, Masin I, Machado R, Silva EJNL, et al. Morphological changes related to age in mesial root canals of permanent mandibular first molars. Acta Odontol Latinoam. 2014;27:105–9.

PubMed  Google Scholar 

Alak SG, Keleş A, Keskin C, Martins JNR, Versiani MA. Age-related changes in the morphology of the root canal system of mandibular first molars: a micro-CT study. Clin Oral Investig. 2023;27:4667–75.

Article  PubMed  Google Scholar 

McCabe P, Dummer PMH. Pulp canal obliteration: an endodontic diagnosis and treatment challenge. Int Endod J. 2012;45:177–97.

Article  PubMed  CAS  Google Scholar 

Milcent CPF, Silva TG, Baika ML, Grassi MT, Carneiro E, Franco A, et al. Morphologic, structural, and chemical properties of pulp stones in extracted human teeth. J Endod. 2019;45:1504–12.

Article  PubMed  Google Scholar 

Luukko K, Kettunen P, Fristad I, Berggreen E. Structure and functions of the dentin-pulp complex. In: Hargreaves KM, Cohen S, editors. Cohen’s pathways of the pulp. 10th ed. St. Louis: Mosby; 2011. p. 283–348.

Google Scholar 

Martins JN, Ordinola-Zapata R, Marques D, Francisco H, Carames J. Differences in root canal system configuration in human permanent teeth within different age groups. Int Endod J. 2018;51:931–41.

Article  PubMed  CAS  Google Scholar 

Reis AGR, Grazziotin-Soares R, Barletta FB, Fontanella VRC, Mahl CRW. Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age: a cone-beam computed tomographic study. J Endod. 2013;39:588–92.

Article  PubMed  Google Scholar 

Martins JN, Marques D, Silva EJNL, Caramês J, Mata A, Versiani MA. Second mesiobuccal root canal in maxillary molars—a systematic review and meta-analysis of prevalence studies using cone beam computed tomography. Arch Oral Biol. 2020;113:104589.

Article  PubMed  Google Scholar 

Martins JN, Marques D, Silva EJNL, Carames J, Mata A, Versiani MA. Influence of demographic factors on the prevalence of a second root canal in mandibular anterior teeth–a systematic review and meta-analysis of cross-sectional studies using cone beam computed tomography. Arch Oral Biol. 2020;116:104749.

Article  PubMed  Google Scholar 

Versiani MA, Martins JN, Ordinola-Zapata R. Anatomical complexities affecting root canal preparation: a narrative review. Aust Dent J. 2023;68:S5–23.

Article  PubMed  Google Scholar 

Schneider SW. A comparison of canal preparations in straight and curved root canals. Oral Surg Oral Med Oral Pathol. 1971;32:271–5.

Article  PubMed  CAS  Google Scholar 

Weine FS. Endodontic therapy. 4th ed. St. Louis: Mosby; 1982.

Google Scholar 

Cunningham CJ, Senia ES. A three-dimensional study of canal curvatures in the mesial roots of mandibular molars. J Endod. 1992;18:294–300.

Article  PubMed  CAS  Google Scholar 

Kartal N, Cimilli HK. The degrees and configurations of mesial canal curvatures of mandibular first molars. J Endod. 1997;23:358–62.

Article  PubMed  CAS  Google Scholar 

Schäfer E, Diez C, Hoppe W, Tepel J. Roentgenographic investigation of frequency and degree of canal curvatures in human permanent teeth. J Endod. 2002;28:211–6.

Article  PubMed  Google Scholar 

Nagy CD, Szabó J, Szabó J. A mathematically based classification of root canal curvatures on natural human teeth. J Endod. 1995;21:557–60.

Article  PubMed  CAS  Google Scholar 

Dobó-Nagy C, Keszthelyi G, Szabó J, Sulyok P, Ledeczky G, Szabó J. A computerized method for mathematical description of three-dimensional root canal axis. J Endod. 2000;26:639–43.

Article  PubMed  Google Scholar 

Lee JK, Ha BH, Choi JH, Heo SM, Perinpanayagam H. Quantitative three-dimensional analysis of root canal curvature in maxillary first molars using micro-computed tomography. J Endod. 2006;32:941–5.

Article  PubMed  Google Scholar 

Christodoulou A, Mikrogeorgis G, Vouzara T, Papachristou K, Angelopoulos C, Nikolaidis N, et al. A new methodology for the measurement of the root canal curvature and its 3D modification after instrumentation. Acta Odontol Scand. 2018;76:488–92.

Article  PubMed  Google Scholar 

Park JW, Lee JK, Ha BH, Choi JH, Perinpanayagam H. Three-dimensional analysis of maxillary first molar mesiobuccal root canal configuration and curvature using micro–computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009;108:437–42.

Article  PubMed  Google Scholar 

Nagendrababu V, Murray PE, Ordinola-Zapata R, Peters OA, Roças IN, Siqueira JF Jr, et al. PRILE 2021 guidelines for reporting laboratory studies in Endodontology: a consensus-based development. Int Endod J. 2021;54:1482–90.

Article  PubMed  Google Scholar 

Keleş A, Keskin C, Alqawasmi R, Versiani MA. Evaluation of dentine thickness of middle mesial canals of mandibular molars prepared with rotary instruments: a micro-CT study. Int Endod J. 2020;53:519–28.

Article  PubMed  Google Scholar 

United Nations, Department of Economic and Social Affairs, Population Division. World Population Prospects 2022: Summary of Results. New York: United Nations; 2022.

Google Scholar 

Lee J, Yoo YJ, Perinpanayagam H, Ha BH, Lim SM, Oh SR, et al. Three-dimensional modelling and concurrent measurements of root anatomy in mandibular first molar mesial roots using micro-computed tomography. Int Endod J. 2015;48:380–9.

Article  PubMed  CAS  Google Scholar 

De-Deus G, Rodrigues EA, Lee JK, Kim J, Silva EJ, Belladonna FG, et al. Taper 0.06 versus taper 0.04: the impact on the danger zone. J Endod. 2023;49:536–43.

Article  PubMed  Google Scholar 

Secilmis A, Dilber E, Gokmen F, Ozturk N, Telatar T. Effects of storage solutions on mineral contents of dentin. J Dent Sci. 2011;6:189–94.

Article  Google Scholar 

De-Deus G, Arashiro FN, Souza EM, Silva EJNL, Guimarães TDM, Maciel ACDC, et al. The impact of long-term storage conditions on the development of experimental dentinal microcracks. Aust Endod J. 2024;50:60–8.

Article  PubMed  Google Scholar 

Habelitz S, Marshall GW Jr., Balooch M, Marshall SJ. Nanoindentation and storage of teeth. J Biomech. 2002;35:995–8.

Article  PubMed  Google Scholar