The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation

Jin-Soo Kwon; Hee-Joo Lee; Bock Hur

doi:10.5395/JKACD.2003.28.1.050

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Original Article The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation: Jin-Soo Kwon, Hee-Joo Lee, Bock Hur; Journal of Korean Academy of Conservative Dentistry 2003;28(1):50-56.
DOI: https://doi.org/10.5395/JKACD.2003.28.1.050
Published online: January 31, 2003

Department of Conservative dentistry, Collage of Dentistry, Pusan National University, Korea.

Corresponding author (hjolee@pusan.ac.kr)

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Abstract
REFERENCES

Abstract

The purpose of this study was to evaluate the effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation. Forty-eight single-rooted teeth were used in this study. The teeth were instrumented up to a size 40 K-file and irrigated with 2.5% NaOCl between each file size. And the teeth were divided into 4 groups. In group A, the root canals were irrigated with a final flush of 5ml 2.5% NaOCl as a control group. The teeth in group B were irrigated with a final flush of 5ml 17% EDTA. The teeth in group C and D were irradiated by pulsed Nd:YAG laser(laser parameters were set at 1W, 100mJ, 10Hz, and 2W, 100mJ, 20Hz respectively).

The results were as follows:

1. Apical leakage was observed in 50% of samples in group A, 30% of samples in group B, 20% of samples in group C, and 10% of samples in group D.

2. The teeth in group B had less leakage than group A, but there was no statistically significant differences(p>0.05).

3. The teeth in group C, D had less leakage than group A, and there was statistically significant differences(p<0.05).

4. The teeth in group C, D had less leakage than group B, but there was no statistically significant differences(p>0.05).

5. There was no significant differences in apical leakage between group C and group D(p>0.05).
Keywords: EDTA; ND:YAG laser; Smear layer; Microleakage

REFERENCES

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Fig. 1

Group A(2.5% NaOCl)

Fig. 2

Group B(17% EDTA)-Middle 1/3

Fig. 3

Group B(17% EDTA)-Apical 1/3

Fig. 4

Group C(1W, 100mJ, 10Hz Nd: YAG laser, parallel to canal wall

Fig. 5

Group D(2W, 100mJ, 20Hz Nd: YAG laser, parallel to canal wall

Fig. 6

Additional specimen(1W, 100mJ, 10Hz Nd:YAG laser, perpendicular to canal wall

Fig. 7

Additional specimen(2W, 100mJ, 20Hz Nd:YAG laser, perpendicular to canal wall

Table 1

Classification of groups

Table 2

Criteria for degree of dye penetration

Table 3

Score for apical leakage

Tables & Figures

REFERENCES

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The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation

J Korean Acad Conserv Dent. 2003;28(1):50-56. Published online January 31, 2003

DOI: https://doi.org/10.5395/JKACD.2003.28.1.050

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Figure

The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation

Fig. 1 Group A(2.5% NaOCl)

Fig. 2 Group B(17% EDTA)-Middle 1/3

Fig. 3 Group B(17% EDTA)-Apical 1/3

Fig. 4 Group C(1W, 100mJ, 10Hz Nd: YAG laser, parallel to canal wall

Fig. 5 Group D(2W, 100mJ, 20Hz Nd: YAG laser, parallel to canal wall

Fig. 6 Additional specimen(1W, 100mJ, 10Hz Nd:YAG laser, perpendicular to canal wall

Fig. 7 Additional specimen(2W, 100mJ, 20Hz Nd:YAG laser, perpendicular to canal wall

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

The effects of EDTA and pulsed Nd:YAG laser on apical leakage of canal obturation

Table 1

Classification of groups

Table 2

Criteria for degree of dye penetration

Table 3

Score for apical leakage

Table 1 Classification of groups

Table 2 Criteria for degree of dye penetration

Table 3 Score for apical leakage