Thermal Changes on the Polished Surfaces of Complete Dentures during Function

Recently some electronic parts have been applied to dentures in many oral researches. However, undesirable characteristics of electronic parts will be influenced by temperature.Therefore, it is very important to find stable thermal portions for placing these parts.The objective of this study was to measure the thermal changes on the polished surfaces of complete dentures during mouth movement and to find stable thermal portions.In this experiment, eight thermal sensors were set on the upper and lower polished surfaces of complete dentures for every five complete denture wearers.A hot tea, cold water, hot rice and flaked ice were used as test foods, and thermal changes were measured while ingesting these test foods. The following conclusions were obtained: 1.The thermal changes on the buccal polished surfaces of upper and lower dentures were small. 2.The thermal changes on the palatal polished surfaces of upper dentures were significantly larger than those of lingual surfaces of the lower dentures.And the thermal changes on the lingual polished surfaces of lower dentures was small, especially on the non-working side. 3.These findings indicated that both buccal portions of upper and lower dentures and lingual portions of the lower denture on the non-working side were more suitable for installing electronic parts.