Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Transverse molar movements during growth.

Steve Marshall1, Deborah Dawson, Karin A Southard

  • 1Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa, Iowa City, IA 52242, USA.

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
|December 11, 2003
PubMed
Summary

This study tracked molar crown torque and arch width changes from eruption to adulthood in 36 subjects. Findings reveal significant uprighting and widening of both maxillary and mandibular molars over time.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Unpaid care, time taken off work and healthcare costs before and after partner bereavement among same-gender and different-gender partners: A national population-based study.

Palliative medicine·2025
Same author

Munch's: '<i>Death and the Child</i>'.

Journal of social work in end-of-life & palliative care·2025
Same author

Iron deficiency anemia in patients with heavy menstrual bleeding: The patients' perspective from diagnosis to treatment.

Women's health (London, England)·2025
Same author

Corrigendum to "Between loss and restoration: The role of liminality in advancing theories of grief and bereavement [Soc. Sci. Med. 344 (2024) 116616]".

Social science & medicine (1982)·2024
Same author

Non-medical prescribing in critical care: A mixed methods study.

Intensive & critical care nursing·2024
Same author

Between loss and restoration: The role of liminality in advancing theories of grief and bereavement.

Social science & medicine (1982)·2024

Area of Science:

  • Dentistry
  • Orthodontics
  • Craniofacial Growth

Background:

  • Understanding molar development is crucial for diagnosing and treating malocclusions.
  • Longitudinal data on molar crown torque and intermolar width are essential for predicting long-term dental arch stability.

Purpose of the Study:

  • To evaluate changes in molar crown torque and intermolar arch width from permanent first molar eruption through early adulthood.
  • To analyze the direction and magnitude of these changes in untreated Class I occlusion subjects.

Main Methods:

  • Measurements of molar crown torque and intermolar arch width were taken from 36 untreated subjects.
  • Data were collected at multiple time points: approximately ages 7.5, 10.3, 12.9, 16.5, and 26.4 years.
  • Statistical analysis utilized the Wilcoxon signed rank test.

Related Experiment Videos

Main Results:

  • Mandibular molars showed buccal uprighting (5.0° for first, 7.5° for second) and increased intermolar width (2.2 mm for first, 0.78 mm for second).
  • Maxillary molars exhibited lingual uprighting (3.3° for first, 5.9° for second) with increased intermolar width (2.8 mm for first, 2.0 mm for second).
  • Both maxillary and mandibular molars uprighted with age, accompanied by increases in intermolar width (P <.01).

Conclusions:

  • Maxillary molars erupt with buccal crown torque and upright lingually with age, while mandibular molars erupt with lingual crown torque and upright buccally.
  • Changes in molar crown torque are significantly associated with concurrent increases in maxillary and mandibular intermolar width.