The irrigating effect before and after coronal flaring

Ho-Keel Hwang; Seong-Chul Bae; Young-Lin Cho

doi:10.5395/JKACD.2003.28.1.072

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Hwang, Bae, and Cho: The irrigating effect before and after coronal flaring

Original Article

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2003; 28(1): 72-79.

Published online: 31 January 2003

DOI: https://doi.org/10.5395/JKACD.2003.28.1.072

The irrigating effect before and after coronal flaring

Ho-Keel Hwang, Seong-Chul Bae, Young-Lin Cho

Department of Conservative Dentistry, Oral Biology Research Institute, College of Dentistry, Chosun University, Korea.

Corresponding author (rootcanal@hanmail.net)

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The objective of this in vitro study was to evaluate the efficacy of a Ca(OH)₂ removal before and after early coronal flaring using different types of instruments. 100 plastic blocks with 30° artificial curved canals were used in this study and randomly divided into a control group and 4 experimental groups(GG, OS, GT, PT Group) 20 teeth each. The canals were instrumented, and Ca(OH)₂ was temporary filled into the each canal. Irrigation was performed with Max-i-Probe 25-, 30-gauge probes before and after recapitulation.

The results of this study were as follows:

1. There were no significant difference among the groups in size of irrigating needle(p<0.05).

2. There was a significant difference between before and after recapitulation regardless size of irrigating needle(p<0.05).

3. Before recapitulation, there was a significant difference between 25- and 30-gauge needle in all groups(p<0.05).

4. After recapitulation, there was a significant difference between 25- and 30-gauge needle in the control group(p<0.05). But there were no significant difference among the experimental groups.

It is concluded that the effectiveness of canal irrigation was decided to the depth of irrigating needle into the canal. The effect of canal irrigation tend to facilitate by the early coronal flaring. The recapitulation was the most effective during canal irrigation regardless the size of irrigating needle. Therefore, the recapitulation is a mandatory way to facilitate the effectiveness of canal irrigation during canal enlargement.

Keywords: Coronal Flaring, Irrigation, Recapitulation, Canal enlargement

Figures and Tables

Fig. 1

The device for taking a standard radiograph at same position

Fig. 2

Evaluation of remaining Ca(OH)₂ by steroscope

Fig. 3

Average extent of remaining Ca(OH)₂ before recapitulation

Fig. 4

Average extent of remaining Ca(OH)₂ after recapitulation

^*: Significantly different at p<0.05(paired t-test)

Table 1

Group classification according to instruments

Table 2

Average extent of remaining Ca(OH)2 after canal irrigation (unit: mm)

A: before recapitulation B: after recapitulation

^*: Significantly different at p<0.05(paired t-test)

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