The swallowing reflex is modulated by multiple sensory inputs, such as bolus volume, viscosity, and taste. The interactions among different types of sensory information have been extensively studied. However, the influence of oral temperature on bolus volume perception has not been investigated. The aim of this study was to assess the effect of temperature on volume perception sensitivity in healthy individuals. Five volumes (5, 10, 15, 20, and 25 mL) of distilled water were estimated at three different temperatures, 4℃ (cold), 21℃ (room temperature), and 45℃ (warm), using a visual analogue scale. There were no significant differences in the sensitivity of oral volume perception across temperatures. These findings suggest that the ability to perceive bolus volume remains stable under temperature variation.

Introduction
Materials and Methods
    1. Subjects
    2. Liquid
    3. Experimental condition
    4. Subjects instruction and procedure
    5. Data and statistics
Results
Discussion
Funding
Conflicts of Interest
References

• Kun-Hwa Kang(Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea)
• Ji-Rak Kim(Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea)
• Jin-Seok Byun(Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea)
• Jae-Kwang Jung(Department of Oral Medicine, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea, Institute for Hard Tissue and Bio-tooth Regeneration, Kyungpook National University, Daegu 41940, Republic of Korea) Corresponding author