Evaluation of the Changes in Polymerization of TheraCal LC with Various Light-curing Time and Distance (광중합 시간과 거리의 변화에 따른 TheraCal LC의 중합도 평가)

Sangyong Bae (배상용); Je-Woo Lee (이제우); Jiyoung Ra (라지영)

doi:10.5933/JKAPD.2019.46.4.392

Evaluation of the Changes in Polymerization of TheraCal LC with Various Light-curing Time and Distance

Journal of the Korean academy of pediatric dentistry
Abbr : J Korean Acad Pediatr Dent
2019, 46(4), pp.392-399
DOI : 10.5933/JKAPD.2019.46.4.392
Publisher : The Korean Academy Of Pediatric Dentistry
Research Area : Medicine and Pharmacy > Dentistry
Received : July 1, 2019
Accepted : August 22, 2019
Published : November 27, 2019

Sangyong Bae ¹, Je-Woo Lee ¹, Jiyoung Ra ²

¹원광대학교
²원광대학교 치과대학 소아치과학교실

Accredited

ABSTRACT

The purpose of this study was to evaluate polymerization of TheraCal LC, one of the tricalcium silicate cements. To measure the Vickers hardness number (VHN), the specimens were cured at different light curing time and distance. As a result, the VHN of the upper surface was significantly higher than the lower surface’s in all groups (p < 0.05). The VHN of the lower surface was increased significantly with the increase of the light curing time in all distance (p < 0.05). When the distance was more than 4.0 mm at all light curing time, the VHN of lower surface was significantly decreased (p < 0.05). When the specimen was light cured for 20 seconds, the VHN of the lower surface did not exceed 2, which corresponds to 10% of the upper surface’s. These results suggested that the 20 second light curing time was not sufficient to polymerize the lower surface under specific conditions and that light-curing time should be increased.

KEYWORDS

Polymerization, Vickers hardness, Tricalcium silicate cement

Citation status

* References for papers published after 2023 are currently being built.

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Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Evaluation of the Changes in Polymerization of TheraCal LC with Various Light-curing Time and Distance

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Citation status

* References for papers published after 2023 are currently being built.

Journal of the Korean academy of pediatric dentistry 2023 KCI Impact Factor : 0.48

Evaluation of the Changes in Polymerization of TheraCal LC with Various Light-curing Time and Distance

ABSTRACT

KEYWORDS

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