Modern Endodontic Principles Part 3: Preparation.

The purpose of instrumentation is to facilitate irrigation and allow controlled obturation. This article will revisit methods of instrumentation of the root canal system with consideration given to length determination, apical preparation and the concept of patency filing. It will discuss hand instrumentation and rotary preparation looking at emerging technology such as reciprocating systems and the self-adjusting file. CPD/CLINICAL RELEVANCE: Mechanical preparation of the root canal system is of fundamental importance in achieving success, creating a more easily managed environment from a biological perspective.

[1]  J. Siqueira,et al.  Mechanical reduction of the bacterial population in the root canal by three instrumentation techniques. , 1999, Journal of endodontics.

[2]  I. Eames,et al.  The fluid mechanics of root canal irrigation , 2010, Physiological measurement.

[3]  B. Sattapan,et al.  Defects in rotary nickel-titanium files after clinical use. , 2000, Journal of endodontics.

[4]  Mullaney Tp.  Instrumentation of finely curved canals. , 1979 .

[5]  Peter Parashos,et al.  Rotary NiTi instrument fracture and its consequences. , 2006, Journal of endodontics.

[6]  G. Bergenholtz,et al.  Improved quality of root fillings provided by general dental practitioners educated in nickel-titanium rotary instrumentation. , 2007, International endodontic journal.

[7]  P. Dummer,et al.  The fundamental operating principles of electronic root canal length measurement devices. , 2006, International endodontic journal.

[8]  H. Gerstein,et al.  An initial investigation of the bending and torsional properties of Nitinol root canal files. , 1988, Journal of endodontics.

[9]  N. Cohenca,et al.  Effect of apical preparation size and preparation taper on irrigant volume delivered by using negative pressure irrigation system. , 2010, Journal of endodontics.

[10]  Y. Kuttler,et al.  Microscopic investigation of root apexes. , 1955, Journal of the American Dental Association.

[11]  O A Peters,et al.  Root-canal preparation with FlexMaster: canal shapes analysed by micro-computed tomography. , 2003, International endodontic journal.

[12]  A. L. Frank,et al.  The anticurvature filing method to prepare the curved root canal. , 1980, Journal of the American Dental Association.

[13]  P. Brunton,et al.  An overview of electronic apex locators: part 2 , 2013, BDJ.

[14]  L. Fava.  The double-flared technique: an alternative for biomechanical preparation. , 1983, Journal of endodontics.

[15]  WooCheol Lee,et al.  Cyclic fatigue and torsional resistance of two new nickel-titanium instruments used in reciprocation motion: Reciproc versus WaveOne. , 2012, Journal of endodontics.

[16]  N P Chandler,et al.  Electronic apex locators. , 2004, International endodontic journal.

[17]  I. N. Rôças,et al.  Chemomechanical reduction of the bacterial population in the root canal after instrumentation and irrigation with 1%, 2.5%, and 5.25% sodium hypochlorite. , 2000, Journal of endodontics.

[18]  P R Wesselink,et al.  Prevalence and extent of long oval canals in the apical third. , 2000, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

[19]  G. Yared,et al.  Influence of apical enlargement on bacterial infection during treatment of apical periodontitis. , 1994, Journal of endodontics.

[20]  J B Roane,et al.  The "balanced force" concept for instrumentation of curved canals. , 1985, Journal of endodontics.

[21]  Libor Kovarik,et al.  Metallurgical characterization of a new nickel-titanium wire for rotary endodontic instruments. , 2009, Journal of endodontics.

[22]  O A Peters,et al.  Changes in root canal geometry after preparation assessed by high-resolution computed tomography. , 1999, Journal of endodontics.

[23]  D. Ørstavik,et al.  Bacterial reduction with nickel-titanium rotary instrumentation. , 1998, Journal of endodontics.

[24]  T. Chow.  Mechanical effectiveness of root canal irrigation. , 1983, Journal of endodontics.

[25]  H Schilder,et al.  Filling root canals in three dimensions. , 1967, Dental clinics of North America.

[26]  I. Akcay,et al.  Deformation of the self-adjusting file on simulated curved root canals: a time-dependent study. , 2011, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

[27]  A. Kfir,et al.  The self-adjusting file optimizes debridement quality in oval-shaped root canals. , 2011, Journal of endodontics.

[28]  Richard E. Walton,et al.  Principles and Practice of Endodontics , 1989 .

[29]  K. Kerekes,et al.  Effects of extensive apical reaming and calcium hydroxide dressing on bacterial infection during treatment of apical periodontitis: a pilot study. , 1991, International endodontic journal.

[30]  K. W. Falk,et al.  The influence of preparation size on the mechanical efficacy of root canal irrigation in vitro. , 2005, Journal of endodontics.

[31]  K. Gulabivala,et al.  A prospective study of the factors affecting outcomes of nonsurgical root canal treatment: part 1: periapical health. , 2011, International endodontic journal.

[32]  P. Wesselink,et al.  Does the first file to bind correspond to the diameter of the canal in the apical region? , 2002, International endodontic journal.