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Related Experiment Videos

Oral environment temperature changes induced by cold/hot liquid intake

G Airoldi1, G Riva, M Vanelli

  • 1Dipartimento di Fisica, Università di Milano, Italy.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|July 1, 1997
PubMed
Summary

Oral temperature fluctuations from drinking affect Nickel-Titanium (NiTi) shape memory alloy wires used in orthodontics. Understanding these temperature changes is crucial for predicting stress modifications during orthodontic treatment.

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Area of Science:

  • Orthodontics
  • Biomaterials Science
  • Dental Engineering

Background:

  • Nickel-Titanium (NiTi) shape memory alloys are utilized in orthodontics for their light, continuous forces, which are more effective for tooth movement than heavy intermittent forces.
  • The functional properties of NiTi wires, particularly their recovery force, are highly sensitive to temperature variations.
  • Understanding oral temperature fluctuations is essential for predicting stress state modifications during orthodontic therapy.

Purpose of the Study:

  • To investigate oral temperature modifications induced by cold and hot drink intake.
  • To assess the impact of these temperature changes on NiTi arch wires used in orthodontic appliances.

Main Methods:

  • Arch wires were attached to removable Hawley retainers, mimicking orthodontic practice.

Related Experiment Videos

  • Six temperature sensors were placed on specific teeth to record temperature changes.
  • Temperature variations were also monitored on a metallic frame with a palatal expander, used for correcting crossbites.

    • Main Results:

    • The most significant temperature change was observed in the interincisor area.
    • Temperature modifications on other teeth varied depending on the drinking method.
    • The palatal zone exhibited the highest temperature variations, particularly with the palatal expander in place.

    Conclusions:

    • Temperature modifications in the oral cavity during orthodontic treatment with NiTi wires are expected due to factors like drink intake.
    • These temperature changes can influence the stress state of NiTi wires, potentially affecting treatment outcomes.
    • Further understanding of oral thermoregulation is necessary for optimizing NiTi wire performance in orthodontics.