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The 10th UK National Heat Transfer Conference was held in Edinburgh, Scotland, during 10-11 September 2007 under the auspices of the UK Heat Transfer Committee and was co-organized by the University of Edinburgh and Heriot-Watt University. The conference was part of a series of conferences which were initially organized every 4 years but more recently every 2 years in a synchronized manner with the European Thermal Sciences Conference and International Heat Transfer Conference. Thus, the UK heat transfer community, along with the international participants, can get together every year in a national or European or international heat transfer conference. [ABSTRACT FROM AUTHOR]

Aim: The study compared pulp temperature rise during polymerization of resin-based composites (RBCs) using halogen and LED light-curing units (LCUs)., Methods and Materials: A total of 32 teeth extracted from patients aged 11-18 years were used in the study. Thermocouples placed on the roof of the pulp chamber using a novel 'split-tooth' method. In Group 1 a halogen LCU with a light intensity of 450 mW cm(-2) was used and in Group 2, an LED LCU with a light intensity of 1100 mW cm(-2) was used. The teeth were placed in a water bath with the temperature regulated until both the pulp temperature and the ambient temperature were stable at 37 degrees C. Continuous temperature records were made via a data logger and computer. The increase in temperature from baseline to maximum was calculated for each specimen during the curing of both the bonding agent and the RBC., Results: The rise in pulp temperature was significantly higher with the LED LCU than with the halogen LCU for bonding and RBC curing (p<0.05). The major rise in temperature occurred during the curing of the bonding agent. During the curing of the RBC, rises were smaller., Conclusions: Curing of bonding agents should be done with low intensity light and high intensity used only for curing RBC regardless of whether LED or halogen LCUs are used.