The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation

吴友农; 黄力子; 史俊南

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The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation

Updated：2026-03-12

- The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation
- Military Medical Research Issue 4, Pages: 351-353(1989)
- Affiliations：
  
  1. Department of Odontology Oindu Stomatological Hospital
  2. Fourth Military Medical University
  3. ,Xi’an,710032
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：1989
- Accepted：
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[1]吴友农,黄力子,史俊南.The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation[J].Journal of Medical Colleges of PLA,1989(04):351-353+390.
DOI：

[1]吴友农,黄力子,史俊南.The Effect of Ultrasonic Method for Preparing Root Canals:A Scanning Electron Microscopic Evaluation[J].Journal of Medical Colleges of PLA,1989(04):351-353+390. DOI：

摘要

Abstract

<正> Sixteen fresh extracted human teeth paired according to their anatomic locations

were divided into two groups at random.The root canais of the teeth in Group 1 were preparedwith an ultrasonic unit and those of Group 2 with hand instruments.Then

the specimens wereobserved under a scanning electron microscope and their pnotographs were taken.Blindevaluation of cleanness was performed for each canal.Statistical dnalysis of the data indicatesthat the canal walls were cleaner in Group 1 than in Group 2 and that the ultrasonic preparationtook less time.

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