Related Experiment Video
Updated: Aug 15, 2026
08:07
A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
Published on: January 11, 2018
Structure of the TMJ as viewed on the pantomograph
The Journal of Prosthetic Dentistry
|September 1, 1982
Summary
Accurate temporomandibular joint (TMJ) positioning in pantomography is crucial for clear visualization. Proper projection techniques, like oblique and profile views, ensure accurate assessment of condyle and joint structures, aiding diagnosis.
Area of Science:
- Dentistry
- Radiology
- Anatomy
Background:
- Pantomography is a common radiographic technique for evaluating the temporomandibular joint (TMJ).
- Accurate visualization of TMJ structures, including the mandibular condyle and articular surfaces, is essential for diagnosis.
- Achieving optimal image quality depends on precise positioning within the zone of sharpness.
Purpose of the Study:
- To evaluate the diagnostic value of pantomography for TMJ assessment.
- To determine the effectiveness of different projection techniques in visualizing TMJ anatomy.
- To identify factors influencing image quality and diagnostic accuracy in TMJ pantomography.
Main Methods:
- Analysis of pantomographic images of the TMJ.
- Comparison of oblique and profile projection techniques for visualizing specific TMJ components.
- Evaluation of image distortions related to incorrect TMJ positioning within the zone of sharpness.
Main Results:
- Oblique projection effectively demonstrates medial/lateral condylar cortices, TMJ space, and articular surfaces.
- Profile projection excels at showing anterior/posterior condylar cortices, condyle-fossa relationship, and condyle position.
- Image discrepancies, such as shortening/blurring (anterior positioning) or elongation/severe blurring (posterior positioning), indicate improper TMJ placement.
Conclusions:
- Precise TMJ positioning within the pantomographic zone of sharpness is critical for diagnostic accuracy.
- Oblique and profile projections offer complementary views for comprehensive TMJ evaluation.
- Radiographic interpretation should consider potential image distortions arising from suboptimal condyle positioning.
Related Concept Videos
01:10Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
01:09Overview of the Axial Skeleton
The skeleton is subdivided into two major divisions—the axial skeleton and the appendicular skeleton. The axial skeleton forms the vertical, central axis of the body. It includes all of the bones of the head, neck, chest, and back. It protects the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back and for muscles that act across the shoulder and hip joints to move their corresponding limbs.
The axial skeleton of the adult...
The axial skeleton of the adult...
01:14Cranial Bones: Superior and Posterior View
The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
01:27Cranial Bones: Lateral View
The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
01:28Articulations of the Vertebral Column
In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...
01:13Microscopic Anatomy of Skeletal Muscles
Skeletal muscle cells, also called muscle fibers, are distinctly elongated, multi-nucleated, slender biological units. They are packed with specialized structures designed to facilitate their primary function, which is contraction.
The muscle sarcolemma is a plasma membrane enclosing each muscle cell that conducts electrical signals called action potentials. The sarcolemma extends into the cell to form T-tubules, ensuring the neural impulses are uniformly distributed across the entire muscle...
The muscle sarcolemma is a plasma membrane enclosing each muscle cell that conducts electrical signals called action potentials. The sarcolemma extends into the cell to form T-tubules, ensuring the neural impulses are uniformly distributed across the entire muscle...