Related Experiment Video
Updated: Jan 21, 2026
05:43
Protocol for Developing a Femur Osteotomy Model in Wistar Albino Rats
Published on: August 31, 2022
3.3K
Transverse Changes in Mandible Following Bilateral Sagittal Split Ramus Osteotomy Advancement
1Oral and Maxillofacial Surgery, 8 AFDC, Kanpur, India.
Journal of Maxillofacial and Oral Surgery
|August 3, 2019
Summary
Bilateral Sagittal Split Ramus Osteotomy (BSSRO) for mandibular advancement causes significant transverse width changes in the mandible. However, these radiographic changes in proximal segments lack clinical implication during follow-up.
Area of Science:
- Orthodontics and Maxillofacial Surgery
- Dental and Craniofacial Research
- Skeletal Deformity Correction
Background:
- Bilateral Sagittal Split Ramus Osteotomy (BSSRO) is a common surgical procedure for mandibular advancement.
- The impact of BSSRO on the proximal segment's transverse dimensions remains incompletely understood.
Purpose of the Study:
- To radiographically assess transverse changes in the mandible after BSSRO.
- To compare proximal segment transverse displacement with the extent of surgical advancement.
Main Methods:
- Twelve patients with skeletal Class II deformities underwent BSSRO.
- Pre- and post-operative panoramic radiography (OPG) and posteroanterior cephalograms (PA ceph) were used.
- Linear measurements of mandibular transverse dimensions were analyzed.
Main Results:
- Average mandibular advancement was 6.5 mm.
- Statistically significant transverse changes were observed in Go-Me, Go-Go, Co-Co, Rp-Rp, and Co-Me measurements.
- No significant correlation was found between advancement amount and transverse changes.
Conclusions:
- BSSRO significantly alters mandibular transverse dimensions, evident on PA ceph and OPG.
- Observed transverse changes following BSSRO have no apparent clinical significance in post-operative follow-up.
Related Concept Videos
01:13Speed of a Transverse Wave
3.8K
The speed of a wave depends on the characteristics of the medium. For example, in the case of a guitar, the strings vibrate to produce the sound. The speed of the waves on the strings and the wavelength determine the frequency of the sound produced. The strings on a guitar have different thicknesses but may be made of similar material. They have different linear densities, and the linear density is defined as the mass per length.
One of the key properties of any wave is the wave speed. Light...
One of the key properties of any wave is the wave speed. Light...
3.8K
01:21Deformations in a Transverse Cross Section
603
When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
603
01:13¹H NMR: Complex Splitting
1.8K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.8K
01:15Deformation of a Beam under Transverse Loading
739
Understanding beam deflection, particularly for indeterminate beams with overhanging segments and multiple concentrated loads, is crucial for ensuring structural integrity and functionality. The process begins with constructing an accurate free-body diagram, which helps identify the forces and moments acting on the beam. This diagram is vital for visualizing how bending moments vary along the beam's length, influencing its curvature.
The insights from the bending moment diagram extend to...
The insights from the bending moment diagram extend to...
739
00:56Extraction: Advanced Methods
1.1K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.1K
02:22Overview of Advanced Functional Groups
29.2K
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
29.2K