Analysis of temperature rise on the root surface during continuous wave of condensation technique

Young-Ju Kim; Yun-Chan Hwang; Sun-Ho Kim; In-Nam Hwang; Bo-Young Choi; Young-Jin Jeong; Woo-Nam Juhng; Won-Mann Oh

doi:10.5395/JKACD.2003.28.4.341

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Original Article Analysis of temperature rise on the root surface during continuous wave of condensation technique: Young-Ju Kim, Yun-Chan Hwang, Sun-Ho Kim, In-Nam Hwang, Bo-Young Choi^#, Young-Jin Jeong^#, Woo-Nam Juhng^#, Won-Mann Oh; Journal of Korean Academy of Conservative Dentistry 2003;28(4):341-347.
DOI: https://doi.org/10.5395/JKACD.2003.28.4.341
Published online: July 31, 2003

Department of Conservative Dentistry, College of Dentistry, DSRI, Chonnam National University, Korea.

^#School of Mechanical Systems Engineering, Chonnam National University, Korea.

Corresponding author (wmoh@chonnam.ac.kr)

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Abstract
REFERENCES

Abstract

This study was conducted to evaluate the temperature rise on the root surface while the root canal is being obturated using continuous wave of condensation technique. Maxillary central incisor was prepared for repeated canal obturation. Ten thermocouples (Omega Engineering Inc., Stanford, USA) were placed at 1 mm increment from the anatomical root apex. The real temperature of Buchanan plugger was recorded before insertion into the root canal. The root canal was obturated with continuous wave of condensation technique as described by Buchanan and the root surface temperature was recorded during obturation at 150℃, 200℃, 250℃ and 300℃ temperature settings of System B HeatSource (Model 1005, Analytic technologies, Redmond, WA, USA). After completion of the temperature recording, the dentinal-cementum thickness at each sites was measured. The data were analyzed using one-way ANOVA followed by Scheffe' s test and linear regression test.

The results were as follows.
1. When the temperature was set at 150℃, 200℃, 250℃ and 300℃ on the digital display of System B HeatSource, the real temperature of the plugger at the 1mm point from the tip revealed 130.82±2.96℃, 158.00±5.26℃, 215.92±6.91℃ and 249.88±3.65℃ respectively.
2. The position of 8 mm from the anatomical apex showed the highest temperature increase at each temperature settings and it was significantly higher than those of other positions (p<0.01). The temperature rise was constantly increased toward coronal portion from apex of the root.
3. The maximum temperature increase on the root surface was 2.37±0.09℃ at 150℃ setting, 3.11±0.12℃ at 200℃ setting, 3.93±0.09℃ at 250℃ setting and 5.69±0.15℃ at 300℃ setting respectively.
These results suggest that it be relatively kind to the supporting tissues of the root that the root canal is obturated using continuous wave of condensation technique at 150℃, 200℃, 250℃ and 300℃ temperature settings on digital temperature display of System B HeatSource.
Keywords: Continuous wave of condensation technique; Thermocouple

REFERENCES

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Fig. 1

Components of tooth model.

Fig. 2

Diagram showing the placement of thermocouples on the root surface.

T1: 1 mm from the anatomical apex, T10: 10 mm from the anatomical apex.

Fig. 3

Schematic illustration of the whole system.

Fig. 4

Maximum temperature increase on the root surface.

Bar represents no significant difference between two temperature settings at the same site on the root surface.

Fig. 5

Representative temperature rise at 8 mm from the anatomical apex of the root by time of measurement.

Table 1

Digital display of System B HeatSource vs real temperature at 1mm from the ML size Buchanana plugger tip (Mean±S.D.)

Table 2

Maximum temperature increase on the root surface

ΔT: Mean of maximum temperature increase, S.E.: Standard Error

T1: 1 mm from the anatomical apex

T10: 10 mm from the anatomical apex

Same character represents no significant difference between two sites at each temperature setting.

Table 3

The dentinal-cementum thickness of the root

T1: 1 mm from the anatomical apex, T10: 10 mm from the anatomical apex.

Tables & Figures

REFERENCES

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Analysis of temperature rise on the root surface during continuous wave of condensation technique

J Korean Acad Conserv Dent. 2003;28(4):341-347. Published online July 31, 2003

DOI: https://doi.org/10.5395/JKACD.2003.28.4.341

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Figure

Analysis of temperature rise on the root surface during continuous wave of condensation technique

Fig. 1 Components of tooth model.

Fig. 2 Diagram showing the placement of thermocouples on the root surface. T1: 1 mm from the anatomical apex, T10: 10 mm from the anatomical apex.

Fig. 3 Schematic illustration of the whole system.

Fig. 4 Maximum temperature increase on the root surface. Bar represents no significant difference between two temperature settings at the same site on the root surface.

Fig. 5 Representative temperature rise at 8 mm from the anatomical apex of the root by time of measurement.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Analysis of temperature rise on the root surface during continuous wave of condensation technique

Table 1

Digital display of System B HeatSource vs real temperature at 1mm from the ML size Buchanana plugger tip (Mean±S.D.)

Table 2

Maximum temperature increase on the root surface

ΔT: Mean of maximum temperature increase, S.E.: Standard Error

T1: 1 mm from the anatomical apex

T10: 10 mm from the anatomical apex

Same character represents no significant difference between two sites at each temperature setting.

Table 3

The dentinal-cementum thickness of the root

T1: 1 mm from the anatomical apex, T10: 10 mm from the anatomical apex.

Table 1 Digital display of System B HeatSource vs real temperature at 1mm from the ML size Buchanana plugger tip (Mean±S.D.)

Table 2 Maximum temperature increase on the root surface

ΔT: Mean of maximum temperature increase, S.E.: Standard Error

T1: 1 mm from the anatomical apex

T10: 10 mm from the anatomical apex

Same character represents no significant difference between two sites at each temperature setting.