지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.12
- 수록면
- 69 - 78 (10page)
이용수
초록· 키워드
오류제보하기
Purpose: The primary objective of this study was to evaluate the change in the temperature of the adhesive resin in polycrystalline ceramic brackets irradiated using a diode laser at different irradiation energy levels and times.
Materials and Methods: For the measurement of the temperature of the adhesive resin, it was applied at the base of the ceramic bracket, a thermocouple was placed at the center of the base surface, the bracket was placed on prepared resin specimens for light curing, and a laser was irradiated to the center of the bracket slot at 5, 7, and 10 W. For the measurement of the temperatures of the enamel under the bracket and pulp cavity, extracted premolar was fixed to a prepared mold and the ceramic bracket was bonded to the buccal surface of the premolar. The Kruskal–Wallis H test and Friedman test were used for statistical analysis.
Result: At 5 W, the temperature of the adhesive resin did not reach the resin softening temperature of 200°C within 30 seconds. At 7 W, it reached 200°C when the ceramic bracket was irradiated continuously for 28 seconds. At 10 W, it reached 200°C when the ceramic bracket was irradiated continuously for 15 seconds. During laser irradiation, the temperature of the enamel under the bracket increased by over 5°C within 15 seconds.
Conclusion: The use of diode laser irradiation for bracket debonding should be carefully considered because the pulp cavity temperature increases by over 5°C within the irradiation time for resin thermal softening.
Materials and Methods: For the measurement of the temperature of the adhesive resin, it was applied at the base of the ceramic bracket, a thermocouple was placed at the center of the base surface, the bracket was placed on prepared resin specimens for light curing, and a laser was irradiated to the center of the bracket slot at 5, 7, and 10 W. For the measurement of the temperatures of the enamel under the bracket and pulp cavity, extracted premolar was fixed to a prepared mold and the ceramic bracket was bonded to the buccal surface of the premolar. The Kruskal–Wallis H test and Friedman test were used for statistical analysis.
Result: At 5 W, the temperature of the adhesive resin did not reach the resin softening temperature of 200°C within 30 seconds. At 7 W, it reached 200°C when the ceramic bracket was irradiated continuously for 28 seconds. At 10 W, it reached 200°C when the ceramic bracket was irradiated continuously for 15 seconds. During laser irradiation, the temperature of the enamel under the bracket increased by over 5°C within 15 seconds.
Conclusion: The use of diode laser irradiation for bracket debonding should be carefully considered because the pulp cavity temperature increases by over 5°C within the irradiation time for resin thermal softening.
목차
Introduction
Materials and Methods
Result
Discussion
Conclusion
References
참고문헌 (36)
참고문헌 신청
Newman SM / 1984 / Direct bonding of orthodontic brackets to esthetic restorative materials using a silane / Am J Orthod 86:503~506
Barbosa VL / 1995 / Direct bonding to porcelain / Am J Orthod Dentofacial Orthop 107:159~164
Feldon PJ / 2010 / Diode laser debonding of ceramic brackets / Am J Orthod Dentofacial Orthop 138:458~462
Ahrari F / 2012 / Does ultra-pulse CO2 laser reduce the risk of enamel damage during debonding of ceramic brackets? / Lasers Med Sci 27:567~574
Tehranchi A / 2011 / Evaluation of the effects of CO2 laser on debonding of orthodontics porcelain brackets vs. the conventional method / Lasers Med Sci 26:563~567
Barbosa VL / 1995 / Direct bonding to porcelain / Am J Orthod Dentofacial Orthop 107:159~164
Feldon PJ / 2010 / Diode laser debonding of ceramic brackets / Am J Orthod Dentofacial Orthop 138:458~462
Ahrari F / 2012 / Does ultra-pulse CO2 laser reduce the risk of enamel damage during debonding of ceramic brackets? / Lasers Med Sci 27:567~574
Tehranchi A / 2011 / Evaluation of the effects of CO2 laser on debonding of orthodontics porcelain brackets vs. the conventional method / Lasers Med Sci 26:563~567
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