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A pilot study of intraoral temperature changes.

C C Youngson1, C W Barclay

  • 1Division of Restorative Dentistry, Leeds Dental Institute, Clarendon Way, Leeds LS2 9LU, UK. c.c.youngson@leeds.ac.uk

Clinical Oral Investigations
|September 23, 2000
PubMed
Summary

This study measured oral temperatures during a thermal challenge, finding significant variations across different tooth sites. Current thermocycling methods may not accurately reflect real-world temperature fluctuations in the mouth.

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Area of Science:

  • Dental Materials Science
  • Oral Physiology

Background:

  • Dental restorations require testing under simulated oral conditions.
  • Existing thermocycling regimens may not accurately replicate intraoral temperature variations.

Purpose of the Study:

  • To record temperature variations at multiple intraoral sites during a standardized thermal challenge.
  • To evaluate the clinical realism of current thermocycling protocols.

Main Methods:

  • An in vivo pilot study using a single volunteer without dentinal hypersensitivity.
  • Thermocouples placed at facial and lingual mid-coronal sites of various teeth (incisors, canines, premolars, molars).
  • A standardized regimen of hot coffee (72.5°C) followed by cold orange juice (6.0°C).

Main Results:

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  • Significant temperature fluctuations were recorded across different intraoral sites.
  • Maximum recorded temperature: 68.0°C; Minimum recorded temperature: 15.4°C.
  • Posterior teeth and specific facial/lingual sites showed less extreme temperature changes.

Conclusions:

  • Intraoral temperatures vary considerably depending on the location when consuming hot or cold beverages.
  • Commonly employed thermocycling regimens may lack clinical relevance due to unrealistic temperature profiles.
  • Further research is needed to develop more accurate thermocycling protocols for dental materials testing.