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Related Concept Videos

Assessment of the Mouth01:26

Assessment of the Mouth

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A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
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Updated: Feb 18, 2026

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Interocclusal clearance during speech and in mandibular rest position. A comparison between different measuring

Birgit Meier1, Olaf Luck, Winfried Harzer

  • 1Department of Orthodontics, Technical University of Dresden, Germany.

Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopadie : Organ/Official Journal Deutsche Gesellschaft Fur Kieferorthopadie
|March 22, 2003
PubMed
Summary

Determining interocclusal clearance is crucial for dental reconstructions. This study found no single superior method, highlighting challenges with electronic and manual techniques, and radiation concerns with cephalometry for orthodontic patients.

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Area of Science:

  • Dentistry
  • Orthodontics
  • Prosthodontics

Background:

  • Interocclusal clearance varies between individuals and impacts dental reconstruction stability.
  • Accurate determination of vertical dimension is challenging and methods are debated.
  • Deep bite and cover-bite cases present specific challenges for vertical dimension assessment.

Purpose of the Study:

  • To compare three methods for determining interocclusal clearance during speech and at mandibular rest.
  • To evaluate the reproducibility of each measurement technique.
  • To identify practical limitations and potential errors associated with each method.

Main Methods:

  • Evaluated 33 malocclusion-free patients using extraoral manual and electronic registration.
  • Repeated measurements to assess reproducibility.
  • Utilized cephalometric registration to record freeway space (interocclusal clearance at rest).

Main Results:

  • No single registration method demonstrated clear superiority.
  • Electronic registration was time-consuming, suitable only for specific cases.
  • Manual registration had sources of error including skin marker movement and divider handling.

Conclusions:

  • Specific speech samples like "Ohio" yielded unreliable high values.
  • Cephalometric registration showed slight interindividual variation but is impractical for orthodontics due to radiation.
  • Thorough practice and repetition are essential for reproducible measurements regardless of the method.