The principles of techniques for cleaning root canals
Review
Keywords:
nickel-titanium alloy, root canal instrumentation, rotary preparation, irrigation, endodonticsAbstract
Chemomechanical root canal preparation involves both mechanical instrumentation and antibacterial irrigation, and is aimed primarily at removing microorganisms from the root canal system. For this essential step of root canal therapy, a number of devices and procedures have been developed and described. Nickel-titanium (NiTi) rotary devices have been a standard in clinical endodontics since their debut in 1988 because of their excellent ability to form root canals with possibly fewer procedural problems. Basic metallurgy of the alloy, including fracture processes and their relevance to canal anatomy, is required for safe clinical use of NiTi devices. This study examines the biological principles of root canal preparation, with a focus on the proper use of contemporary rotary NiTi instrumentation techniques and systems. The role and properties of contemporary root canal irrigants is also discussed.
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References
Ørstavik D, Pitt Ford TR. Apical periodontitis: microbial infection and host responses. In: Ørstavik D, Pitt Ford TR, eds. Essential endodontology. Prevention and treatment of apical periodontitis. Oxford: Blackwell Science, 1998.
M¨oller AJ, Fabricius L, Dahl´en G, Ohman AE, Heyden G. ¨ Influence on periapical tissues of indigenous oral bacteria and necrotic pulp tissue in monkeys. Scand J Dent Res 1981;89:475- 484.
Sundqvist G. Bacteriological studies of necrotic dental pulps. Umeå, Sweden: Umeå University, 1976. Dissertation.
Parashos P, Messer HH. The diffusion of innovation in dentistry: a review using rotary nickel-titanium technology as an example. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;101:395-401.
Lang H, Korkmaz Y, Schneider K, Raab WH. Impact of endodontic treatments on the rigidity of the root. J Dent Res 2006; 85: 364-368.
Siqueira JF Jr. Reaction of periradicular tissues to root canal treatment: benefits and drawbacks. Endod Topics 2005; 10: 123-147.
Sundqvist G. Bacteriological studies of necrotic dental pulps. Umeå, Sweden: Umeå University, 1976. Dissertation.
al-Omari MA, Dummer PM. Canal blockage and debris extrusion with eight preparation techniques. J Endod 1995;21:154-158.
Morgan LF, Montgomery S. An evaluation of the crown-down pressureless technique. J Endod 1984;10:491-498.
Fava LR. The double-flared technique: an alternative for biomechanical preparation. J Endod 1983;9:76-80
Parashos P, Messer HH. The diffusion of innovation in dentistry: a review using rotary nickel-titanium technology as an example. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006; 101: 395-401.
Vaudt J., Bitter K, Kielbassa AM. Evaluation of rotary root canal instruments in vitro: A review. ENDO 2007; 1: 189-203.
Guelzow A, Stammo, Martus P, Kielvassa AM. Comparative study of six rotary Nickel titanium systems and hand instrumentations for root canal preparation. Int Endod J 2005; 38: 743-752.
Tan BT, Messer HH. The quality of apical canal preparation using hand and rotary instruments with specific criteria for enlargement based on initial apical file size. J Endod 2002;28:658-664.
Young GR, Parashos P, Messer HH. The principles of techniques for cleaning root canals. Australian Dental Journal 2007; 52 (Suppl): 52-60.
Plotino G, Grande NM, Melo MC, Bahia MG, Testarelli L, Gam- barini G. Cyclic fatigue of NiTi rotary instruments in a simulated apical abrupt curvature. Int Endod J 2010; 43: 226-30.
Siqueira JF Jr. Reaction of periradicular tissues to root canal treatment: benefits and drawbacks. Endod Topics 2005; 10: 123-147.
Parashos P, Messer HH. The diffusion of innovation in dentistry: a review using rotary nickel-titanium technology as an example. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006; 101: 395-401.
Setzer FC, Kwon TK, Karabucak B. Comparison of apical trans- portation between two rotary file systems and two hybrid rotary instrumentation sequences. J Endod 2010; 36: 1226-9.
Hu ̈lsmann M, Peters OA, Dummer PMH. Mechanical preparation of root canals: shaping goals, techniques and smeans. Endod Topics 2005; 10: 30-76
Peters OA, Sch¨onenberger K, Laib A. Effects of four Ni-Ti preparation techniques on root canal geometry assessed by micro computed tomography. Int Endod J 2001;34:221-230.
dentinal tubule penetration depth by three different root canal sealers: an in vitro study. J Endod 2004;30:100-102.
Clark-Holke D, Drake D, Walton R, Rivera E, Guthmiller JM. Bacterial penetration through canals of endodontically treated teeth in the presence or absence of the smear layer. J Dent 2003;31:275-281.
Baumgartner JC, Mader CL. A scanning electron microscopic evaluation of four root canal irrigation regimens. J Endod 1987;13:147-157
O’Connell MS, Morgan LA, Beeler WJ, Baumgartner JC. A comparative study of smear layer removal using different salts of EDTA. J Endod 2000;26:739-743.
Gutarts R, Nusstein J, Reader A, Beck M. In vivo debridement efficacy of ultrasonic irrigation following hand-rotary instrumentation in human mandibular molars. J Endod 2005; 31: 166-170.
Piccolomini R, D’Arcangelo C, D’Ercole S, Catamo G, Schiaffino G, De Fazio P. Bacteriologic evaluation of the effect of Nd:YAG laser irradiation in experimental infected root canals. J Endod 2002;28:276-278. 51.
Seal GJ, Ng YL, Spratt D, Bhatti M, Gulabivala K. An in vitro comparison of the bactericidal efficacy of lethal photosensitization or sodium hyphochlorite irrigation on Streptococcus intermedius biofilms in root canals. Int Endod J 2002;35:268-274.
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