Related Experiment Video
Updated: Feb 15, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
Morphometric analysis for evaluating the relation between incisal guidance angle, occlusal plane angle, and
Seulgi Han1, Sang Min Shin2, Yong-Seok Choi3
1a Departmet of Orthodontics, Dental Research Institute , Pusan National University Dental Hospital , Yangsan , Korea.
Objective:
The correlations between morphology of the temporomandibular joint structure, the anterior guidance angle, and occlusal plane were investigated.
Materials And Methods:
A cone beam computed tomography analysis was performed in 158 patients (86 women and 72 men). 3D software was employed to obtain the coordinates of the shape of the incisal guidance angle, occlusal guidance angle, articular fossa, and mandibular condyle. Generalized Procrustes analysis including principal components analysis (PCA) were performed and produced principal components (PCs) scores of each shape and their centroid size (CS).
Results:
A significant Pearson correlation coefficient of 0.3451 (p < .001) was observed between the incisal guidance angle and occlusal plane. The CS also showed a correlation with the incisal guidance angle, but not with the occlusal plane angle. The PCA results revealed that there were no significant correlations between the temporomandibular joint structure (TMJ) shape (fossa and condyle) and the incisal guidance angle.
Conclusions:
Incisor guidance angle and occlusal plane angle were correlated. In addition, there was a correlation between CS and incisal guidance angle. In the PCA, It can be concluded that the size is more related to the incisor guidance angle than the morphological factors of the constituent components of the TMJ.
Related Concept Videos
Contact Angle
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Angle of Twist: Problem Solving
Design Example: Traverse Angle Computations
Angle Closure Glaucoma: Treatment
Angle of Twist - Elastic Range

