Temperature rise induced by various light curing units through human dentin

Creative Commons License

DOĞAN A., HUBBEZOĞLU İ., DOĞAN O. M., BOLAYIR G., DEMİR H.

DENTAL MATERIALS JOURNAL, cilt.28, sa.3, ss.253-260, 2009 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.4012/dmj.28.253
  • Dergi Adı: DENTAL MATERIALS JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.253-260
  • Anahtar Kelimeler: Light curing units, Temperature rise, Dentin, RESIN COMPOSITES, IN-VITRO, KNOOP-HARDNESS, HALOGEN LIGHT, POLYMERIZATION, INTENSITY, STRENGTH, DEPTH, HEAT, CURE
  • Gazi Üniversitesi Adresli: Evet

Özet

This study investigated temperature rises caused by different light curing units (LCUs) in dentin of different thicknesses. The different LCUs tested in this study were namely: quartz-tungsten-halogen (QTH) (Heliolux DLX) LCU, plasma arc (PAC) (Apollo 95E Elite) LCU and light emitting diode (LED) (Mini LED) in standard curing mode as well as pulse and soft-start modes. One hundred and forty dentin disks of 0.5, 1, 1.5, and 2 mm thickness were prepared from mandibular molars (n=7). Temperatures were recorded using a L-type thermocouple in direct contact With the light guide tip. For all Curing units/modes, dentin thickness was inversely proportional to temperature rise and that QTH light gave significantly higher values compared to PAC and LED in all the test conditions. The highest temperature rise was Observed under 0.5-mm-thick dentin disk with QTH, whereas the lowest temperature rise was registered with LED light in pulse mode under 2-mm-thick dentin.