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Analysis of temperature rise on the surface of buchanan plugger using thermocouple


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Analysis of temperature rise on the surface of buchanan plugger using thermocouple

Article information

Restor Dent Endod. 2003;28(4):334-340
Publication date (electronic) : 2003 July 31
doi : https://doi.org/10.5395/JKACD.2003.28.4.334
Jin-Suk Cho, Yun-Chan Hwang, Sun-Ho Kim, In-Nam Hwang, Bo-Young Choi#, Young-Jin Jeong#, Woo-Nam Juhng#, Won-Mann Oh
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)

Abstract

This study was performed to evaluate the actual temperature rise on the surface of Buchanan plugger using thermocouple. The heat carrier system 'System B Heatsource' (Model 1005, Analytic Technologies, Redmond, WA, USA) and the Buchanan pluggers of F, FM, M and ML sizes are used for this study. The temperature was set to 200℃ on digital display and the power level on it was set to 10. Five thermocouples were placed in direct contact with the surface of each size of Buchanan's pluggers at 1 mm increments from the tip to the 4 mm length of shank. The heat control spring was touched for 5 seconds, and the temperature rise on the surface of the pluggers were measured at 1 sec intervals for more than 5 seconds with an accuracy of 0.01 using Data Logger. The data were statistically analyzed by one-way ANOVA.

The results were as follows.

  1. The position at which the temperature peaked was approximately at 1~2 mm far from the tip of Buchanan plugger (p<0.01).

  2. The peak temperature was 215.25±2.28℃ in F plugger, 185.94±2.19℃ in FM plugger, 169.51±9.12℃ in M plugger, and 160.79±1.27℃ in ML plugger and the peak temperature was highest in F plugger and followed by, in descending order, FM plugger, M plugger. ML plugger showed the lowest peak temperature (p<0.01).

  3. The temperature on the pluggers was decreased with the increase of touching time.

This results suggest that the actual temperature on the surface of the pluggers does not correlate well with the temperature set on digital display. Heat concentrates around the tip. The larger plugger reveals lower temperature rise relatively.

Keywords: Thermocouple; System B Heatsource; Temperature; Buchanan plugger

References

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Article information Continued

Copyright © 2003 Korean Academy of Conservative Dentistry
(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.

Fig. 1

Fig. 1

Schematic illustration of the whole system.

Fig. 2

Fig. 2

Schematic illustration of Buchanan plugger with thermocouple.

Fig. 3

Fig. 3

The fixation device of Buchanan plugger with System B HeatSource and data logger.

Fig. 4

Fig. 4

Temperature changes on the surface of Buchanan plugger at 1 sec of touching time (℃).

(setting temperature: 200℃, power level: 10).

*: significant difference among pluggers (p<0.01).

@: significant difference among distances (p<0.01).

Fig. 5

Fig. 5

Temperature changes on the surface of Buchanan plugger at 2 sec of touching time (℃).

(setting temperature: 200℃, power level: 10)

*: significant difference among pluggers (p<0.01).

@: significant difference among distances (p<0.01).

Fig. 6

Fig. 6

Temperature changes on the surface of Buchanan plugger at 3 sec of touching time (℃).

(setting temperature: 200℃, power level: 10)

*: significant difference among pluggers (p<0.01).

@: significant difference among distances (p<0.01).

Fig. 7

Fig. 7

Temperature changes on the surface of Buchanan plugger at 4 sec of touching time (℃).

(setting temperature: 200℃, power level: 10)

*: significant difference among pluggers (p<0.01).

@: significant difference among distances (p<0.01).

Fig. 8

Fig. 8

Temperature changes on the surface of Buchanan plugger at 5 sec of touching time(℃).

(setting temperature: 200℃, power level: 10)

*: significant difference among pluggers (p<0.01).

@: significant difference among distances (p<0.01).

Table 1

Temperature changes on the surface of Buchanan plugger (F) (Mean±S.D. (℃), n=10)

Table 1

*: significant difference among time of measurement (p<0.01).

@: significant difference among distances (p<0.01).

Table 2

Temperature changes on the surface of Buchanan plugger (FM) (Mean±S.D. (℃), n=10)

Table 2

*: significant difference among time of measurement (p<0.01).

@: significant difference among distances (p<0.01).

Table 3

Temperature changes on the surface of Buchanan plugger (M) (Mean±S.D. (℃), n=10)

Table 3

*: significant difference among time of measurement (p<0.01).

@: significant difference among distances (p<0.01).

Table 4

Temperature changes on the surface of Buchanan plugger (ML) (Mean±S.D. (℃), n=10)

Table 4

*: significant difference among time of measurement (p<0.01).

@: significant difference among distances (p<0.01).