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roots - international magazine of endodontology No. 3, 2016

| technique canal shaping 20 roots 3 2016 4. Wipe off the flutes. Deliver irrigant to the pulp chamber and confirm canal patency with a #15 handfile K-File. 5. Repeatsteps3and4usingthefileyoustartedwith until working length is achieved. 6. Repeat steps 3 and 4 with the yellow SM2 or ML2 until the file reaches working length. If the desired apical size is achieved the sequence is complete. Forlargerapicalsizes,repeatsteps3and4withthe redSM3orML3untilthefilereachesworkinglength. Note:AllTFAfilesmaybeusedinabrushingmanner directedtowardstheexternalsurfaceoftherootaway fromthecanalcurvaturewhenretrievingthefilefrom thecanals. Irrigate and dry When irrigating with EndoVac (apical negative pressure irrigation system),2 in small canals, you musttakeSM3toworkinglength.Inmedium/large canals, you must take at least ML2 to working length. Note that the Microcannula is .32 mm in diameter (Fig. 9). TF Adaptive matching Paper Points may be used to dry the canals. Obturation TFAdaptivematchingGuttaPerchaincombina- tion with the Elements Free Cordless Obturation system37 may be used to obturate the root canal system. Alternatively, TF Adaptive carriers may be used. Conclusions TFA employs Twisted File technology and Adaptive Motion Technology. The TF Adaptive file design is based on clinically proven Twisted File technology, which means the file is twisted to shape for improved file durability, features R-­ Phase Technology to improve file flexibility and strength while maintaining the original canal curvature minimizing canal and apical transpor- tation (Fig. 10). Adaptive Motion Technology is based on a pat- ented, smart algorithm designed to work with the TF Adaptive file system. The authors have also found that Adaptive Motion Technology works wellwithothergroundfilerotarysystemsmaking theirusesaferespeciallyinsmallerandcurvedca- nals.ThistechnologyallowstheTFAdaptivefileto adjust to intra-canal torsional forces depending on the amount of pressure placed on the file. This means the file is in either a rotary or reciprocation motion depending on the situation and adjusts appropriately. Thiswinningcombinationresultsinexceptional debris removal with the tried and trusted classic rotary Twisted File design and less chance of file pull down and debris extrusion with Adaptive Motion Technology._ Editorial Note: A complete list of references is available fromthepublisher. ThisarticleoriginallyappearedinOralHealthdentaljournal MAY2016. Disclaimer: Drs.Gambarini and Glassman are the inventors ofAdaptive Motion and receive a nominal royalty from Kerr. authors Dr Gary Glassman is the author of numerous publications.He lectures globally on endodontics,is on staff at the University ofToronto,Faculty of Dentistry in the graduate depart- ment of endodontics,and isAdjunct Professor of Dentistry and Director of Endodontic Programming for the University ofTechnology,Kingston,Jamaica.Gary is a fellow of the Royal College of Dentists of Canada,Fellow of theAmerican College of Dentists and the endodontic editor for Oral Health dental journal.He maintains a private practice,Endodontic Specialists in Toronto,Ontario,Canada.His website is www.drgaryglassman.com and his office website is www.rootcanals.ca.He can be reached at drg@drgaryglassman.com. GianlucaGambariniisafull-timeProfessorofEndodontics,UniversityofRome,LaSapienza, DentalSchool.HeisheadoftheEndodonticDepartmentInternationallecturerandresearcher. Heisauthorofmorethan450scientificarticles,threebooksandchaptersinotherbooks.He haslecturedallovertheworld(morethan350presentations)andhasbeeninvitedasamain speakerinthemostimportantinternational(AAE,IFEA,ESE)andnationalendodontic congressesinEurope,NorthandSouthAmerica,Asia,MiddleEast,AustraliaandSouthAfrica. Prof.GianlucaGambarinistillmaintainsaprivatepracticelimitedtoEndodonticsinRome,Italy. Dr Sergio A.Rosler has been theAssistant ClinicalTeacher in numerous graduate and post-graduate Endodontic Programs and was Clinical FellowTeacher atWarwick Dentistry University in the United Kingdom.Dr Rosler has lectured at conferences and several universities around the world.He maintains a private practice limited to Endodontics in BuenosAires,Argentine and can be reached at sergiorosler@gmail.com. Fig.10: CBCT (Cone Beam ComputerisedTomography) three dimensional visualisation ofTFA preparation (SM sequence) in a complex molar,showing proper shape, tapered preparation and excellent maintenance of canal trajectories. (Courtesy of Dr Lucila Piasecki,Brazil and Prof.Gianluca Gambarini,Italy) Fig.10 32016

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