Related Experiment Video
Updated: Oct 2, 2026

Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
Published on: February 23, 2024
The influence of extraction and nonextraction orthodontic treatment on brachyfacial and dolichofacial growth patterns
L Klapper1, S F Navarro, D Bowman
1Department of Orthodontics, Loyola University School of Dentistry, Maywood, Ill.
Abstract:
The effects of extraction and nonextraction orthodontic treatment mechanics on patients with dolichofacial and brachyfacial growth patterns between one and two standard deviations were studied. Groups underwent treatment of either nonextraction or extraction of four premolars with the appropriate mechanics for the facial type. Changes in the facial axis and correlation between maxillary molar movement and facial axis change were measured. A positive correlation was found between the amount of anteroposterior movement of the upper molar and change in the facial axis in brachyfacial and dolichofacial patients undergoing nonextraction treatment. A weak correlation was found in the extraction treatment groups. No statistically significant difference was found in the facial axis change among any of the groups studied, regardless of facial type or plan of treatment. There were indications of a more severe opening of the facial axis (Ba-Na plane to constructed gnathion) with greater degrees of maxillary molar distal movement in both facial patterns studied.
More Related Videos
07:16Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
08:03Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
Related Concept Videos
Growth of Cartilage and Bone Tissue
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Physical Growth During Infancy and Toddlerhood