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

Lower third molar space.

M E Richardson

    The Angle Orthodontist
    |April 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    The space for lower third molars increases significantly after all baby teeth are replaced. This growth is driven equally by jawbone changes and the first molar shifting forward, though individual results vary greatly.

    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

    Association of gene variant type and location with breast cancer risk in the general population.

    Annals of oncology : official journal of the European Society for Medical Oncology·2025
    Same author

    In sickness and in health.

    British dental journal·2004
    Same author

    Prosthetic prose.

    British dental journal·2003
    Same author

    Toothache tales: Part 2.

    British dental journal·2002
    Same author

    Toothache tales: Part 1.

    British dental journal·2002
    Same author

    Atrazine effects on in vitro maturation and in vitro fertilization in the bovine oocyte.

    Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes·2002
    Same journal

    Impact of cone-beam computed tomography image quality on artificial intelligence-driven three-dimensional tooth segmentation and evaluation of external apical root resorption.

    The Angle orthodontist·2026
    Same journal

    Bracket transfer accuracy of two three-dimensionally printed lingual indirect bonding trays with different bracket frame designs.

    The Angle orthodontist·2026
    Same journal

    Biomechanical impact of beveling design on extrusion of a maxillary canine and a maxillary first molar: an in vitro and finite element analysis study.

    The Angle orthodontist·2026
    Same journal

    Effectiveness of resin-modified glass ionomer vs composite bonding agents for orthodontic bonding: a single-center randomized controlled trial.

    The Angle orthodontist·2026
    Same journal

    Plastic deformation evaluation of clear aligners exposed to different cleaning solutions.

    The Angle orthodontist·2026
    Same journal

    Quantitative evaluation of an artificial intelligence-driven remote monitoring system for occlusion assessment using patient-captured images.

    The Angle orthodontist·2026
    See all related articles

    Area of Science:

    • Orthodontics
    • Craniofacial development
    • Dental anthropology

    Background:

    • Understanding the development of the mandibular arch is crucial for predicting third molar eruption and potential impaction.
    • The transition from deciduous to permanent dentition involves complex skeletal and dental changes.
    • Previous studies have offered varying explanations for the increase in lower arch length.

    Purpose of the Study:

    • To quantify the increase in lower third molar space during the five years following the complete replacement of deciduous teeth.
    • To determine the relative contributions of ramus resorption and mesial molar movement to this observed space increase.
    • To assess the variability in these contributing factors among individuals.

    Main Methods:

    • Longitudinal cephalometric analysis of dental casts and radiographs.

    Related Experiment Videos

  • Measurement of key landmarks to assess mandibular ramus resorption.
  • Tracking the mesial or distal movement of the first permanent molar over a five-year period.
  • Statistical analysis to compare the average contributions and variability of resorption and molar movement.

    • Main Results:

    • A significant average increase in space available for the lower third molars was observed.
    • Ramus resorption and mesial movement of the first permanent molar contributed approximately equally to the observed space increase on average.
    • High individual variability was noted in both the total space gained and the proportion contributed by each factor.

    Conclusions:

    • The mandibular arch undergoes significant dimensional changes after mixed dentition, accommodating third molar development.
    • Both bone remodeling at the mandibular ramus and mesial drift of molars are key mechanisms.
    • Clinical assessment should account for substantial inter-individual variation in these developmental processes.