DOI: http://dx.doi.org/10.18203/2394-6040.ijcmph20214299

Effect of rotary systems and root canal preparation and dentin crack formation

Abdulkader Abdulelah Abulhamayel, Hamdi Abdullah Altukhays, Hatim Abdullah Alamri, Abdulrahman Ahmad Salem, Jummar Ammar Farrash, Adulelah Zaid Alshammari, Rawan Ibrahim Alhazmy, Asmaa Ahmed Alghamdi, Osama Sulaiman Alrasheed, Mona Dabshi Alanazi, May Mansour Alotaibi

Abstract


Evidence indicates that root canal preparation is a critical step upon which the prognosis of the endodontic treatment depends. Vertical root fractures can furtherly develop as propagations from the previously formed dentin cracks. Therefore, root canal preparation should be carefully approached with the minimal crack formation and careful dentin removal. Different modalities have been proposed in the literature and rotary systems are most commonly used nowadays. Although the reported efficacy of these modalities is high, evidence shows that they are usually associated with a considerable risk of crack formation. In the present literature review, we have discussed the effects of rotary instrumentation and root canal preparation on dentinal crack formation based on evidence from the different studies in the literature. Our evidence showed that all of the investigated approaches to prepare root canals adequately can result in crack formation. The different rotary instrumentations also showed variable frequencies of developing dentinal cracks, and evidence from some comparative investigations shows that ProTaper modalities are associated with the least frequencies of the events. However, to make a solid conclusion for clinical practice, further research is still needed to validate our current evidence.


Keywords


Endodontics, Treatment, Root canal preparation, Dentin cracks, Rotary system

Full Text:

PDF

References


Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endodont. 2004;30(8):559-67.

Yoldas O, Yilmaz S, Atakan G, Kuden C, Kasan Z. Dentinal microcrack formation during root canal preparations by different NiTi rotary instruments and the self-adjusting file. J Endodont. 2012;38(2):232-5.

Bier CA, Shemesh H, Tanomaru-Filho M, Wesselink PR, Wu MK. The ability of different nickel-titanium rotary instruments to induce dentinal damage during canal preparation. J Endodont. 2009;35(2):236-8.

Fuss Z, Lustig J, Katz A, Tamse A. An evaluation of endodontically treated vertical root fractured teeth: impact of operative procedures. J Endodont. 2001;27(1):46-8.

Gambill JM, Alder M, Rio CE. Comparison of nickel-titanium and stainless steel hand-file instrumentation using computed tomography. J Endodont. 1996;22(7):369-75.

Kim HC, Lee MH, Yum J, Versluis A, Lee CJ, Kim BM. Potential relationship between design of nickel-titanium rotary instruments and vertical root fracture. J Endodont. 2010;36(7):1195-9.

Shantiaee Y, Dianat O, Mosayebi G, Namdari M, Tordik P. Effect of root canal preparation techniques on crack formation in root dentin. J Endodont. 2019;45(4):447-52.

Shemesh H, Bier CA, Wu MK, Tanomaru-Filho M, Wesselink PR. The effects of canal preparation and filling on the incidence of dentinal defects. Int Endodont J. 2009;42(3):208-13.

Adorno CG, Yoshioka T, Suda H. Crack initiation on the apical root surface caused by three different nickel-titanium rotary files at different working lengths. J Endodont. 2011;37(4):522-5.

Bortnick KL, Steiman HR, Ruskin A. Comparison of nickel-titanium file distortion using electric and air-driven handpieces. J Endodont. 2001;27(1):57-9.

Adorno CG, Yoshioka T, Suda H. The effect of working length and root canal preparation technique on crack development in the apical root canal wall. Int Endodont J. 2010;43(4):321-7.

Milani AS, Froughreyhani M, Rahimi S, Jafarabadi MA, Paksefat S. The effect of root canal preparation on the development of dentin cracks. Iran Endod J. 2012;7(4):177-82.

Daugherty DW, Gound TG, Comer TL. Comparison of fracture rate, deformation rate, and efficiency between rotary endodontic instruments driven at 150 rpm and 350 rpm. J Endodont. 2001;27(2):93-5.

Gabel WP, Hoen M, Steiman HR, Pink FE, Dietz R. Effect of rotational speed on nickel-titanium file distortion. J Endodont. 1999;25(11):752-4.

Bortoluzzi EA, Souza EM, Reis JM, Esberard RM, Tanomaru-Filho M. Fracture strength of bovine incisors after intra-radicular treatment with MTA in an experimental immature tooth model. Int Endodont J. 2007;40(9):684-91.

Soares CJ, Martins LR, Pfeifer JM, Giannini M. Fracture resistance of teeth restored with indirect-composite and ceramic inlay systems. Quintess Int. 2004;35(4):281-6.

Rosentritt M, F├╝rer C, Behr M, Lang R, Handel G. Comparison of in vitro fracture strength of metallic and tooth-coloured posts and cores. J Oral Rehabilit. 2000;27(7):595-601.

Jamani KD, Harrington E, Wilson HJ. Rigidity of elastomeric impression materials. J Oral Rehabilit. 1989;16(3):241-8.

Yoshida N, Koga Y, Peng CL, Tanaka E, Kobayashi K. In vivo measurement of the elastic modulus of the human periodontal ligament. Med Eng Phys. 2001;23(8):567-72.

Wilcox LR, Roskelley C, Sutton T. The relationship of root canal enlargement to finger-spreader induced vertical root fracture. J Endodont. 1997;23(8):533-4.

Sathorn C, Palamara JE, Messer HH. A comparison of the effects of two canal preparation techniques on root fracture susceptibility and fracture pattern. J Endodont. 2005;31(4):283-7.

Thompson SA, Dummer PM. Shaping ability of ProFile.04 Taper Series 29 rotary nickel-titanium instruments in simulated root canals. Part 1. Int Endodont J. 1997;30(1):1-7.

Bryant ST, Thompson SA, Omari MA, Dummer PM. Shaping ability of profile rotary nickel-titanium instruments with ISO sized tips in simulated root canals: part 1. Int Endodont J. 1998;31(4):275-81.

Khoshbin E, Donyavi Z, Atibeh EA, Roshanaei G, Amani F. The effect of canal preparation with four different rotary systems on formation of dentinal cracks: an in vitro evaluation. Iran Endod J. 2018;13(2):163-8.