title: Modern Endodontic Principles Part 3: Preparation.
abstract: 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.
authors.forename: James
authors.initials: J
authors.lastname: Darcey
authors.forename: Carly
authors.initials: C
authors.lastname: Taylor
authors.forename: Reza Vahid
authors.initials: RV
authors.lastname: Roudsari
authors.forename: Sarra
authors.initials: S
authors.lastname: Jawad
authors.forename: Mark
authors.initials: M
authors.lastname: Hunter
mesh_terms: D003722:Dental Alloys / Q000737:chemistry; D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D055615:Electrical Equipment and Supplies; D004867:Equipment Design; D006801:Humans; D009532:Nickel / Q000737:chemistry; D009811:Odontometry / Q000295:instrumentation / Q000379:methods; D016300:Radiography, Bitewing; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods*; D012399:Rotation; D016369:Smear Layer / Q000473:pathology; D007507:Therapeutic Irrigation / Q000379:methods; D014025:Titanium / Q000737:chemistry; D019227:Tooth Apex / Q000033:anatomy & histology
chemical_list: D003722:Dental Alloys; D012388:Root Canal Irrigants; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium