Presence of suck-back in high-speed peripheral dental instrumentation, Asunción, Paraguay, 2024
DOI:
https://doi.org/10.5281/zenodo.22757373Keywords:
backflow, dental high-speed technique, equipment contamination, infection controlAbstract
Introduction: Suck-back in high-speed dental handpieces allows patient fluids and microorganisms to enter the instrument when air supply stops, with risk of cross-contamination. The aim was to determine the presence of suck-back in three high-speed dental turbines with different anti-suck-back systems commercially available in Asunción, Paraguay.
Materials and methods: Descriptive, observational, cross-sectional in vitro study. Turbines evaluated: Apple Dental Excellent (air cushion), Jinme J5 (external valve) and Thalys THA-715120 (internal valve). Each was coupled to a 3D-printed measurement device with a transparent tube and fluorescent liquid; 10 activations of 10 s per turbine.
Results: Apple Dental Excellent: suck-back 0/10 (anti-suck-back efficacy 100%), no head contamination. Jinme J5: suck-back 9/10 (90%), efficacy 10%. Thalys THA-715120: suck-back 10/10 (100%), efficacy 0%; head contaminated in 10/10.
Conclusions: Marked differences among systems; the air-cushion system was highly effective versus the external and internal valves evaluated, a relevant criterion for dental biosafety.
References
Ozawa T, Nakano M, Arai T. In vitro study of anti-suck-back ability by themselves on new high-speed air turbine handpieces. Dent Mater J. 2010;29(6):649-54. https://doi.org/10.4012/dmj.2010-008
Crawford JJ, Broderius C. Evaluation of a dental unit designed to prevent retraction of oral fluids. Quintessence Int. 1990;21(1):47-51. https://pubmed.ncbi.nlm.nih.gov/2197655/
Bagga BS, Murphy RA, Anderson AW, Punwani I. Contamination of dental unit cooling water with oral microorganisms and its prevention. J Am Dent Assoc. 1984;109(5):712-6. https://doi.org/10.14219/jada.archive.1984.0168
Spagnolo AM, Sartini M, Cristina ML. Microbial contamination of dental unit waterlines and potential risk of infection: a narrative review. Pathogens. 2020;9(8):651. https://doi.org/10.3390/pathogens9080651
Dang Y, Zhang Q, Wang J, Wang Q, Han M, Niu Y, et al. Assessment of microbiota diversity in dental unit waterline contamination. PeerJ. 2022;10:e12723. https://doi.org/10.7717/peerj.12723
Hussain Akbar J, Behbehani J, Karched M. Biofilm growth and microbial contamination of dental unit waterlines at Kuwait University dental center. Front Oral Health. 2022;3:1071018. https://doi.org/10.3389/froh.2022.1071018
Bayani M, Raisolvaezin K, Almasi-Hashiani A, Mirhoseini SH. Bacterial biofilm prevalence in dental unit waterlines: a systematic review and meta-analysis. BMC Oral Health. 2023;23(1):158. https://doi.org/10.1186/s12903-023-02885-4
O'Donnell MJ, Boyle MA, Russell RJ, Coleman DC. Management of dental unit waterline biofilms in the 21st century. Future Microbiol. 2011;6(10):1209-26. https://doi.org/10.2217/fmb.11.104
Putnins EE, Di Giovanni D, Bhullar AS. Dental unit waterline contamination and its possible implications during periodontal surgery. J Periodontol. 2001;72(3):393-400. https://doi.org/10.1902/jop.2001.72.3.393
Samaranayake L, Fakhruddin K, Sobon N, Osathanon T. Dental unit waterlines: disinfection and management. Int Dent J. 2024;74(Suppl 2):S437-45. https://doi.org/10.1016/j.identj.2024.07.1269
Klevens RM, Moorman AC. Hepatitis C virus: an overview for dental health care providers. J Am Dent Assoc. 2013;144(12):1340-7. https://doi.org/10.14219/jada.archive.2013.0069
Cleveland JL, Gray SK, Harte JA, Robison VA, Moorman AC, Gooch BF. Transmission of blood-borne pathogens in US dental health care settings: 2016 update. J Am Dent Assoc. 2016;147(9):729-38. https://doi.org/10.1016/j.adaj.2016.03.020
Laheij AMGA, Kistler JO, Belibasakis GN, Välimaa H, de Soet JJ; European Oral Microbiology Workshop (EOMW) 2011. Healthcare-associated viral and bacterial infections in dentistry. J Oral Microbiol. 2012;4. https://doi.org/10.3402/jom.v4i0.17659
Peng X, Xu X, Li Y, Cheng L, Zhou X, Ren B. Transmission routes of 2019-nCoV and controls in dental practice. Int J Oral Sci. 2020;12(1):9. https://doi.org/10.1038/s41368-020-0075-9
Pan Y, Liu H, Chu C, Li X, Liu S, Lu S. Transmission routes of SARS-CoV-2 and protective measures in dental clinics during the COVID-19 pandemic. Am J Dent. 2020;33(3):129-34. https://pubmed.ncbi.nlm.nih.gov/32470237/
Kohn WG, Harte JA, Malvitz DM, Collins AS, Cleveland JL, Eklund KJ; Centers for Disease Control and Prevention. Guidelines for infection control in dental health care settings — 2003. J Am Dent Assoc. 2004;135(1):33-47. https://doi.org/10.14219/jada.archive.2004.0019
Cleveland JL, Bonito AJ, Corley TJ, Foster M, Barker L, Brown GG, et al. Advancing infection control in dental care settings: factors associated with dentists' implementation of guidelines from the Centers for Disease Control and Prevention. J Am Dent Assoc. 2012;143(10):1127-38. https://doi.org/10.14219/jada.archive.2012.0044
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Cristhian Javier Almirón Sánchez, Julio Simón Garcete, José Orella (Autor/a)
This work is licensed under a Creative Commons Attribution 4.0 International License.
Articles are distributed under the Creative Commons Attribution 4.0 International — CC BY 4.0 licence. Authors retain copyright and grant the journal the right of first publication. Any reuse must acknowledge authorship, cite the original source and indicate whether changes were made.
