Related Experiment Video
Updated: Jul 20, 2026
08:07
A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
Published on: January 11, 2018
8.8K
Orthopantomographic Study of Mandibular Morphology Across Different Growth Patterns: A Retrospective Data Analysis
Anjali Gupta1, Parul Jain1, Abhishek Sharma1
1Department of Orthodontics, Guru Nanak Dev Dental College and Research Institute, Sunam, IND.
Cureus
|September 25, 2025
Summary
Mandibular morphology differs significantly across various facial growth patterns. Understanding these variations in ramus height, gonial angle, and condylar shape is crucial for personalized orthodontic treatment.
Area of Science:
- Orthodontics
- Craniofacial Morphology
- Dental Anatomy
Background:
- Mandibular morphology variations significantly impact orthodontic treatment planning.
- Different facial growth patterns exhibit distinct skeletal characteristics.
- Orthopantomogram (OPG) analysis provides quantitative data on mandibular structures.
Purpose of the Study:
- To evaluate and quantify differences in mandibular morphology across distinct facial growth patterns.
- To analyze ramus height, mandibular body length, gonial angle, and condylar morphology.
- To provide insights for personalized orthodontic interventions based on growth patterns.
Main Methods:
- Retrospective cohort study of 120 subjects with skeletal Class I malocclusion (18-35 years).
- Subjects categorized into hypodivergent, normodivergent, and hyperdivergent groups based on Frankfort-mandibular plane angle (FMA).
- Manual OPG tracing to measure key mandibular parameters and condylar morphology; statistical analysis performed.
Main Results:
- Significant differences in mandibular morphology observed across growth patterns (p<0.05).
- Hyperdivergent group showed reduced condylar/ramus heights, increased gonial angles. Hypodivergent group had increased posterior dimensions, reduced gonial angles.
- Normodivergent group exhibited the longest mandibular body length; atypical condylar shapes were more prevalent in hyperdivergent cases.
Conclusions:
- Mandibular morphology significantly varies with facial growth patterns.
- Ramus height, gonial angle, and condylar shape are key differentiating factors.
- Tailored orthodontic strategies considering growth pattern-specific mandibular characteristics enhance treatment precision and efficacy.
Related Concept Videos
01:55Bone Structure
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
01:40Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
01:27Growth of Cartilage and Bone Tissue
Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
01:18Classification of Bones
The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...
01:17Gross Anatomy of Bone
The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in adults, it...
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in adults, it...
01:26Bone Markings
Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...