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An Evaluation of the In Vivo Debridement Efficacy of 3.0% NaOCl vs. 6.0% NaOCl Ultrasound After Hand and Rotary Instrumentation in Human Mandibular Molars

Aue, Aaron Douglass
http://rave.ohiolink.edu/etdc/view?acc_num=osu1253552721

Abstract Details

2009, Master of Science, Ohio State University, Dentistry.
This study histologically compared the in vivo debridement efficacy of a hand and rotary preparation followed by passive ultrasonic irrigation using a continuous flow of 3% sodium hypochlorite (NaOCl) versus a hand/rotary/ultrasound technique using 6% NaOCl in mesial root canals of vital human mandibular molars. Group 1 consisted of 15 teeth prepared with a hand/rotary technique followed by 1 min of ultrasonic irrigation, per canal, utilizing an ultrasonic needle in a MiniEndo™ unit expressing 15 mL of 3.0% NaOCl per canal. This was compared to Group 2 which was an existing sample collected and evaluated as part of a previous study. Group 2 consisted of 16 teeth prepared with the same hand/rotary/ultrasonic irrigation technique using 6.0% sodium hypochlorite. Following extraction and histologic preparation 5 µm cross-sections from the 1- to 3 mm apical levels were evaluated for percentage of tissue removal from canals and isthmuses using a Neurolucida Image Analysis Program version 7.0. In Group 1, 15 out of the 16 teeth were determined to be severely curved which was significantly more than Group 2. Nonparametric testing between samples from severely curved canals revealed no statistically significant differences between Groups 1 and 2 in mean percent canal and isthmus cleanliness values. Sample values at the 1-, 2-, and 3 mm levels for the 3% NaOCl and 6% NaOCl techniques, respectively, were: canal, 81.8% versus 99.3%, 91.1% versus 100%, and 98.6% versus 96.9%; isthmus, 6.4% versus 92.9%, 19.5% versus 89.2%, and 27.8% versus 98.9%. In conclusion, hand/rotary instrumentation followed by passive ultrasonic irrigation using 6% NaOCl was not significantly different from corresponding values observed using 3% NaOCl.
John Nusstein, M.S. (Advisor)
Alfred Reader, MS (Committee Member)
Melissa Drum, MS (Committee Member)
Michael Beck, MA (Committee Member)
247 p.
Dental Care
passive ultrasonic irrigation; sodium hypochlorite concentration

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Citations

  • Aue, A. D. (2009). An Evaluation of the In Vivo Debridement Efficacy of 3.0% NaOCl vs. 6.0% NaOCl Ultrasound After Hand and Rotary Instrumentation in Human Mandibular Molars [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253552721

    APA Style (7th edition)

  • Aue, Aaron. An Evaluation of the In Vivo Debridement Efficacy of 3.0% NaOCl vs. 6.0% NaOCl Ultrasound After Hand and Rotary Instrumentation in Human Mandibular Molars. 2009. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1253552721.

    MLA Style (8th edition)

  • Aue, Aaron. "An Evaluation of the In Vivo Debridement Efficacy of 3.0% NaOCl vs. 6.0% NaOCl Ultrasound After Hand and Rotary Instrumentation in Human Mandibular Molars." Master's thesis, Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253552721

    Chicago Manual of Style (17th edition)

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This open access ETD is published by The Ohio State University and OhioLINK.