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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제9권 제4호
- 발행연도
- 2017.8
- 수록면
- 294 - 301 (8page)
- DOI
- https://doi.org/10.4047/jap.2017.9.4.294
이용수
초록· 키워드
오류제보하기
PURPOSE. Temperature increase of 5.5 °C can cause damage or necrosis of the pulp. Increasing temperature can be caused not only by mechanical factors, e.g. grinding, but also by exothermic polymerization reactions of resin materials. The aim of this study was to evaluate influences of the form material on the intrapulpal temperature during the polymerization of different self-curing resin materials for temporary restorations.
MATERIALS AND METHODS. 30 provisonal bridges were made of 5 resin materials: Prevision Temp (Pre), Protemp 4 (Pro), Luxatemp Star (Lux), Structure 3 (Str) and an experimental material (Exp). Moulds made of alginate (A) and of silicone (S) and vacuum formed moulds (V) were used to build 10 bridges each on a special experimental setup. The intrapulpal temperatures of three abutment teeth (a canine, a premolar, and a molar,) were measured during the polymerization every second under isothermal conditions. Comparisons of the maximum temperature (TMax) and the time until the maximum temperature (tTMax) were performed using ANOVA and Tukey Test.
RESULTS. Using alginate as the mould material resulted in a cooling effect for every resin material. Using the vacuum formed mould, TMax increased significantly compared to alginate (P<.001) and silicone (P<.001). In groups Lux, Pro, and Pre, tTMax increased when the vacuum formed moulds were used. In groups Exp and Str, there was no influence of the mould material on tTMax.
CONCLUSION. All of the mould materials are suitable for clinical use if the intraoral application time does not exceed the manufacturer’s instructions for the resin materials.
목차
등록된 정보가 없습니다.
참고문헌 (17)
참고문헌 신청
Kim SH / 2004 / Exotherm behavior of the polymerbased provisional crown and fixed partial denture materials / Dent Mater 20:383~387
Barlattani A / 2002 / Polymerization exothermal reaction of dental prosthetic resin for temporary crowns. A comparative evaluation / Minerva Stomatol 51:11~20
Zach l / 1965 / Pulp response to externally applied heat / Oral Surg Oral Med Oral Pathol 19:515~530
Baldissara P / 1997 / Clinical and histological evaluation of thermal injury thresholds in human teeth: a preliminary study / J Oral Rehabil 24:791~801
Amano T / 2006 / Responses of rat pulp cells to heat stress in vitro / J Dent Res 85:432~435
Barlattani A / 2002 / Polymerization exothermal reaction of dental prosthetic resin for temporary crowns. A comparative evaluation / Minerva Stomatol 51:11~20
Zach l / 1965 / Pulp response to externally applied heat / Oral Surg Oral Med Oral Pathol 19:515~530
Baldissara P / 1997 / Clinical and histological evaluation of thermal injury thresholds in human teeth: a preliminary study / J Oral Rehabil 24:791~801
Amano T / 2006 / Responses of rat pulp cells to heat stress in vitro / J Dent Res 85:432~435
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