In root canal treatments, a fundamental step is represented by root canal washing, which in addition to having the purpose of disinfection have the removal of organic and inorganic debris, characterized by bacterial contamination and, if left, sources of future bacterial reinfection.Several authors in the literature have reported that mechanical instrumentation can result in the accumulation of organic and inorganic debris as an undesirable effect, especially in areas such as isthmuses, canal branches and anatomical irregularities (Paquè et al. 2009, De-Deus et al. 2015, Versiani et al. 2016).It is therefore essential to guarantee a valid and effective irrigation in order to remove the greatest amount of debris even in the most difficult to reach canal areas.Irrigation effectiveness is based on many variables, including root canal anatomy, irrigation method, volume, flow and type of irrigant, as well as the type and diameter of the needle used for washes.In addition to these factors, many authors have highlighted how the depth to which the needle is introduced for root canal washing is also decisive in the removal of organic and inorganic debris (Abou-Rass & Piccinino 1982, Chow 1983, Albrecht et al. 2004, Sedgley et al. 2005, Hsieh et al. 2007).According to a very recent study published in the International Endodontic Journal of June 2017, the depth of insertion of the irrigation needle greatly influences the removal of inorganic debris.A needle tip positioned 1mm from the working length resulted in hard tissue debris removal rates nearly three times higher than that afforded by the irrigation needle positioned 5mm from the working length.The authors took twenty mandibular molars anatomically and with similar morphological dimensions in which there was an isthmus identified with a micro-CT device (SkyScan 1173; Bruker micro-CT, Kontich, Belgium).20 lower molars were selected with mesial roots having a type I (ribbon-like and narrow isthmus completely connecting the two mesial canals) or type III (incomplete isthmus existing above or below a complete isthmus).On the basis of the irrigation depth, the teeth were randomly divided into two groups of 10 samples respectively: - Group 1: where the tip of the needle of the irrigation syringe was brought up to 1 mm from the working length;- Group 2: where the needle tip of the irrigation syringe was brought up to 5 mm from the working length (WL).Root canal instrumentation was performed with Reciproc R25 files (tip size 25, 0.08 tapered) and 5.25% sodium hypochlorite was used as an irrigant.The final wash was performed with 17% EDTA followed by double distilled water.The micro-CT samples were then re-examined to quantify the amount of inorganic debris remaining.The results of the study showed that with none of the irrigation needle insertion depths it was possible to guarantee a root canal system completely free of residual debris.However, the depth of insertion of the needle plays a fundamental role in the removal of the same, with a significant reduction in the percentage volume of residual inorganic debris if the needle is brought up to 1 mm from the working length (P <0.05).Edited by: Lara Figini, Scientific Coordinator of Dentistry33 For further information: De-Deus G, Marins J, Silva EJ et al.(2015).Accumulated hard-tissue debris produced during reciprocating and rotary nickel-titanium canal preparation.Journal of Endodontics 41, 676-81.Paque F, Laib A, Gautschi H, Zehnder M (2009).Hard-tissue debris accumulation analysis by high-resolution computed tomography scans.Journal of Endodontics 35, 1044-7.Versiani MA, Alves FR, Andrade-Junior CV et al.(2016) Micro-CT evaluation of the efficacy of hard-tissue removal from the root canal and isthmus area by positive and negative pressure irrigation systems.International Endodontic Journal 49, 1079-87.Abou-Rass M, Piccinino MV (1982).The effectiveness of four clinical irrigation methods on the removal of root canal debris.Oral Surgery, Oral Medicine, Oral Pathology and Endodontics 54, 323-8.Chow TW (1983).Mechanical effectiveness of root canal irrigation.Journal of Endodontics 9, 475-9.Albrecht LJ, Baumgartner JC, Marshall JG (2004).Evaluation of apical debris removal using various sizes and tapers of ProFile GT files.Journal of Endodontics 30, 425-8.Hsieh YD, Gau CH, Kung Wu SF, Shen EC, Hsu PW, Fu E (2007).Dynamic recording of irrigating fluid distribution in root canals using thermal image analysis.International Endodontic Journal 40, 11-7.Sedgley CM, Nagel AC, Hall D, Applegate B (2005).Influence of irrigant needle depth in removing bioluminescent bacteria inoculated into instrumented root canals using real-time imaging in vitro.International Endodontic Journal 38, 97-104.Perez R, Nevse AA, Belladonna FG, Silva EJNL, EM Souza EM, Fidel1 S, Versiani MA, Lima I, Carvalho C & G. De-DeusG. Impact of needle insertion depth on the removal of hard-tissue debris.International Endodontic Journal, 50, 560-568, June 2017In root canal treatments, a fundamental step is represented by root canal washing, which in addition to having the purpose of disinfection have the removal of organic and inorganic debris, characterized by bacterial contamination and, if left, sources of future bacterial reinfection.Several authors in the literature have reported that mechanical instrumentation can result in the accumulation of organic and inorganic debris as an undesirable effect, especially in areas such as isthmuses, canal branches and anatomical irregularities (Paquè et al. 2009, De-Deus et al. 2015, Versiani et al. 2016).It is therefore essential to guarantee a valid and effective irrigation in order to remove the greatest amount of debris even in the most difficult to reach canal areas.Irrigation effectiveness is based on many variables, including root canal anatomy, irrigation method, volume, flow and type of irrigant, as well as the type and diameter of the needle used for washes.In addition to these factors, many authors have highlighted how the depth to which the needle is introduced for root canal washing is also decisive in the removal of organic and inorganic debris (Abou-Rass & Piccinino 1982, Chow 1983, Albrecht et al. 2004, Sedgley et al. 2005, Hsieh et al. 2007).According to a very recent study published in the International Endodontic Journal of June 2017, the depth of insertion of the irrigation needle greatly influences the removal ofinorganic debris.A needle tip positioned 1mm from the working length resulted in hard tissue debris removal rates nearly three times higher than that afforded by the irrigation needle positioned 5mm from the working length.The authors took twenty mandibular molars anatomically and with similar morphological dimensions in which there was an isthmus identified with a micro-CT device (SkyScan 1173; Bruker micro-CT, Kontich, Belgium).20 lower molars were selected with mesial roots having a type I (ribbon-like and narrow isthmus completely connecting the two mesial canals) or type III (incomplete isthmus existing above or below a complete isthmus).Based on the depth of irrigation, the teeth were randomly divided into two groups of 10 samples respectively:- Group 1: where the needle tip of the irrigation syringe was brought up to 1 mm from the working length;- Group 2: where the needle tip of the irrigation syringe was brought up to 5 mm from the working length (WL).Root canal instrumentation was performed with Reciproc R25 files (tip size 25, 0.08 tapered) and 5.25% sodium hypochlorite was used as an irrigant.The final wash was performed with 17% EDTA followed by double distilled water.The micro-CT samples were then re-examined to quantify the amount of inorganic debris remaining.The results of the study showed that with none of the irrigation needle insertion depths it was possible to guarantee a root canal system completely free of residual debris.However, the depth of insertion of the needle plays a fundamental role in the removal of the same, with a significant reduction in the percentage volume of residual inorganic debris if the needle is brought up to 1 mm from the working length (P <0.05).Edited by: Lara Figini, Scientific Coordinator of Dentistry33agora-del-monday 25th July 2022agora-del-monday 25th July 2022New technologies do not always have such intuitive interfaces that they can be assimilated in a short time.From this observation born from the reading of a scientific work, the considerations of prof ....events 22 July 2022events 22 July 2022Two days of theoretical and practical training dedicated to endodontic microsurgery, with the aim of analyzing in depth, on human anatomical preparationsO33 endodontics July 22, 2022O33 endodontics July 22, 2022A recent observational study investigated how much and if an endodontic training course can affect and improve the quality of root canal treatments and their success in ...O33 endodontics 11 July 2022O33 endodontics 11 July 2022In an Italian prospective cohort study, which will soon be published in the Journal of Endodontics, the authors determined the outcome for teeth with root perforations treated with ...produced 08 July 2022produced 08 July 2022ProTaper Ultimate is the latest generation of ProTaper instruments integrated with an advanced disinfection concept and dedicated obturationAgora of Monday 01 August 2022Agora of Monday 01 August 2022A two-day meeting at any Congress can be a return to normal, says prof.Gagliani who warns: training must be duly certified and protected with unfounded rules ...Sunday 31st July 2022Sunday 31st July 2022I was born on a Sunday in August 1964, counting the Draghi Government was the 48th I lived.In Germany, in the same period, there were 19 governments ...Insights July 29, 2022Insights July 29, 2022The Consejo General de Dentistas has drawn up a technical report where the density of professionals by population, the demographic evolution in the last ...Interviews 29 July 2022Interviews 29 July 2022The "Pink Dentistry" project was born from the collaboration between the Cannizzaro Hospital of Catania and the COI-AIOG, which will focus on women's oral health ...Chronicle July 29, 2022Chronicle July 29, 2022Catania will host, from 20 to 22 April 2023, the Congress number 30 of the CDUO organized by the Universities of Palermo, Messina and CataniaDENTAL CADMOS 2022 three-year 150 ECM creditsCourses FAD dentistry 2021 DENTAL CADMOS three-year 150 ECM credits from 2022 to 2024Courses FAD dentists DENTAL CADMOS 2022 and fad 50 ecm "Dentistry and mouth cancer" and "Endodontics: techniques and complex cases"CUT & SHAPE - Reasoned use of burs and sonic inserts in daily dentistryIN THE SIGN OF THE TOOTH - A brief history of the dental ex librisALIGNERS F22.FROM RESEARCH TO CLINICORTHODONTICS AND PERIODONTOLOGY - Combined treatments and clinical synergiesCanine included: digital planningCopyright © 2022 - All Rights ReservedAbout Us Authors Contact Us Legal Notice Privacy Search Site MediKey RegistrationAbout Us Authors Contact Us Legal Notice Privacy Search Site MediKey Registration