This document discusses the histology of the temporomandibular joint (TMJ). It describes the four main anatomical parts: the mandibular condyle, mandibular fossa and articular eminence, articular disc, and articular capsule. The mandibular condyle articulates with the temporal bone and is composed of cancellous bone covered by fibrous tissue. The mandibular fossa and articular eminence are composed of bone and fibrous tissue. The articular disc separates the joint into two compartments and is composed of dense fibrous tissue. The articular capsule encloses the joint and is lined by a synovial membrane that produces synovial fluid to lubricate
A Complete presentation explaining the complete morphology of Maxillary first molar, for the benefit of people like me who tried and failed to find everything in one package
Amelogenesis is the formation of enamel. During amelogenesis, the ameloblast (enamel-forming cells) undergo various stages i.e the life cycle of ameloblast.
For more content check out my blog: www.rkharitha.wordpress.com "a little about everything dental"
It is a presentation in detail about the strongest structure of the oral cavity "ENAMEL". It is a simple topic but people find it difficult to learn about it. I hope my presentation is a simple method to learn about it. I would like to thank my professors for assign me this project and i learn't a lot from it and still learning my basics daily.
A Complete presentation explaining the complete morphology of Maxillary first molar, for the benefit of people like me who tried and failed to find everything in one package
Amelogenesis is the formation of enamel. During amelogenesis, the ameloblast (enamel-forming cells) undergo various stages i.e the life cycle of ameloblast.
For more content check out my blog: www.rkharitha.wordpress.com "a little about everything dental"
It is a presentation in detail about the strongest structure of the oral cavity "ENAMEL". It is a simple topic but people find it difficult to learn about it. I hope my presentation is a simple method to learn about it. I would like to thank my professors for assign me this project and i learn't a lot from it and still learning my basics daily.
PHYSICAL PROPERTIES
CHEMICAL PROPERTIES
STRUCTURE OF ENAMEL
DEVELOPMENT OF ENAMEL
EPITHELIAL ENAMEL ORGAN
AMELOGENESIS
LIFE CYCLE OF AMELOBLASTS
AGE CHANGES IN ENAMEL
DEFECTS OF AMELOGENESIS
CLINICAL IMPLICATIONS
I prepared this presentation during the first year of my MDS. This will give you a basic idea and necessary information about the pulp of the teeth and its histology. Hope you guys find it useful.
https://userupload.net/3ppacneii1wj
Toxicologic Pathology (Second Edition), 2010
INTRODUCTION
The oral mucosa is, in many ways, similar to the skin in its architecture, function, and reaction patterns. This section only emphasizes those characteristics of the oral mucosa that influence or result in a distinct group of pathologic entities.
Because of its location at the entrance of the digestive and respiratory tracts and its proximity to the teeth, the oral mucosa is subjected to numerous natural and man-made xenobiotics. The peculiar architecture and absorption characteristics of the oral mucosa, especially in areas of extreme thinness, coupled with the rich microorganism flora of the mouth, makes the oral mucosa a peculiar site deserving separate discussion.
PHYSICAL PROPERTIES
CHEMICAL PROPERTIES
STRUCTURE OF ENAMEL
DEVELOPMENT OF ENAMEL
EPITHELIAL ENAMEL ORGAN
AMELOGENESIS
LIFE CYCLE OF AMELOBLASTS
AGE CHANGES IN ENAMEL
DEFECTS OF AMELOGENESIS
CLINICAL IMPLICATIONS
I prepared this presentation during the first year of my MDS. This will give you a basic idea and necessary information about the pulp of the teeth and its histology. Hope you guys find it useful.
https://userupload.net/3ppacneii1wj
Toxicologic Pathology (Second Edition), 2010
INTRODUCTION
The oral mucosa is, in many ways, similar to the skin in its architecture, function, and reaction patterns. This section only emphasizes those characteristics of the oral mucosa that influence or result in a distinct group of pathologic entities.
Because of its location at the entrance of the digestive and respiratory tracts and its proximity to the teeth, the oral mucosa is subjected to numerous natural and man-made xenobiotics. The peculiar architecture and absorption characteristics of the oral mucosa, especially in areas of extreme thinness, coupled with the rich microorganism flora of the mouth, makes the oral mucosa a peculiar site deserving separate discussion.
The TMJ is a complex and precisely integrated bilateral
joint structure .
Formed by the articulation of lower jaw with cranium
and the upper facial skeleton
This presentaion was submitted in Dept.of Oral pathology in Goverment Dental College Raipur.
Temporomandibular joint Disorder in oral pathology HIMANSHU DHAKAD
In this slide we talk about temporomandibular joint disorders
Its introduction,classification , anatomy , histology in details
Also cover articular disorder
Traumatic disturbances
Non articular disorders
Development disturbance etc.
DEFINITION, ANATOMY, AND FUNCTIONS OF TEMPOROMANDIBULAR JOINT.
Joint between the head (condyle) of the mandible and the undersurface (articular fossa)of the squamous part of the temporal bone is the temporomandibular joint.
Type of joint : synovial joint (condylar variety).
Capable of providing-hinging (rotation) -gliding (translation) movement.
Sustains incredible forces of mastication.
articulating surfaces-articualar tubercle, mandibular fossa.
functions-Chewing
Sucking
Swallowing
Phonation
Facial expressions
Breathing Protrusion,
Retrusion,
Lateralization of the jaw
Opening the mouth
Maintain the correct pressure of the middle ear
Blood supply- Branches from superficial temporal and maxillary artery.
Veins follow the arteries.
Nerve supply-Auriculotemporal nerve (branch of mandibular nerve) and masseteric nerve (motar branch of anterior division of mandibular nerve).
movemnets of tmj- protraction, retraction, elevation, depression, side to side grinding.
examination of tmj- preauricular method and intraauricular method.
Surgical anatomy of the temporomandibular joint and surgical (nx power lite) ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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Basics about TMJ ( development fuction movement etc ) with classification of tmj disorders and stress on tmj examination.
Also covers muscles of masstication
Anatomy and physiology of TMJ /orthodontic courses by Indian dental academy Indian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
3. INTRODUCTION
The TMJ is a synovial bilateral joint that permits the
mandible to move as a unit with 2 functional
patterns (gliding and hinge movements).
4. 4 anatomical parts concerned with mandibular articulation:
Mandibular condyle
Mandibular fossa and articular eminence
The articular disc
The articular capsule
5. The mandibular condyle articulates with the glenoid fossa
and articular eminence of the temporal bone.
An articular disc separates the articular surfaces in
Upper compartment between the disc and temporal
bone.
Lower compartment between the condyle and the disc
6. The joint capsule is attached below to the
articular margin of the head of the condyle, and
above to the margins of the glenoid fossa and
articular eminence. The inner aspect of the
capsule is lined by a synovial membrane.
7. At the sides, the capsule is strengthened by collateral ligaments of
which the lateral temporomandibular ligament is the strongest.
The lateral temporo-mandibular ligament is attached above to the
zygoma, and below, it is attached to the lateral surfaces and
posterior border of the neck of the mandible.
8. There are 2 accessory ligaments associated with the TMJ:
The stylomandibular ligament attaches to the styloid process and
to the posterior border of the ramus.
The sphenomandibular ligament extends between the spine of
the sphenoid bone and the lingula of the mandible.
These ligaments limit the range of movement of the condyle
preventing it from coming in contact with the tympanic plate behind
and passing beyond the articular eminence in front.
9. THE MANDIBULAR CONDYLE
It’s the articulating surface of the mandible.
It is convex in all directions but wider
latero-medially than antero-posteriorly.
10. HISTOLOGY
Composed of cancellous bone covered by a thin layer of compact
bone.
Trabeculae : of the cancellous bone is arranged in a radiating
manner from the neck to reach the surface of the condyle at a right
angle (to give maximum strength.)
Bone marrow is of myeloid or cellular type and becomes fatty with
age.
Outer layer of compact bone is covered by thick layers of fibrous
tissues composed of:
Superficial layer : network of strong collagen fibers, chondrocytes
and fibroblasts.
Deep layer: thin collagen fibers rich in chondroid cells during
growth period (hyaline cartilage).
Growth occur by apposition from the deepest layer – the
deepest surface of the cartilaginous plate is replaced by bone.
Growth continues till 21 years of age.
Remnants of cartilage may persist in old age.
11. MICROSCOPIC IMAGE
The fibrous articular covering
of the condyle under the EM.
1. Fibrous layer
2. Cartilage
3. Bone
4. Bone marrow
12. MANDIBULAR (GLENOID) FOSSA AND
ARTICULAR EMINENCE
Glenoid fossa:
Posteriorly limited by the
squamotympanic fissure.
Anterioly bounded by the
articular eminence.
Roof: thin layer of compact
bone separating the middle
cranial fossa.
Articular eminence:
Composed of: Spongy bone
covered by thin layer of compact
bone.
Chondroid tissues commonly seen
in the eminence.
13. Fibrous layer covering the articulating surface of temporal bone.
Thin on the articular fossa and thickens on the posterior slope of
the eminence
Over the eminence the fibrous tissues are arranged in 3 zones:
Inner zone – fibers arranged at right angle to surface
Outer zone – fibers run parallel to the bone surface
Intermediate zone – transitional zone. Fibers are interlaced.
14. INTERARTICULAR DISC
Disk is fibrous, avascular, non inverted plate
Shape is oval, biconcave in sagittal section. It is thin in central part
and
thick at posterior borders.
15. Attachment: Medial and lateral
poles of the condyle by medial
and lateral ligaments.
Divide the joint into: Upper
(larger) compartment and
lower (smaller) compartment.
16. Anterior border divides into upper and lower lamellae that run
forward.
The upper lamella fuses with the anterior slope of the articular
eminence.
The lower lamella attaches to the front of the neck of the condyle.
Fibers of the superior head of the lateral pterygoid muscle is
attached to the anterior border.
17. Posterior border divides into upper and lower lamellae
The upper lamella is fibrous and elastic and fuses with the
capsule and is inserted in the squamotympanic fissure.
The lower lamella, non elastic, attaches to the back of the
condyle.
18. HISTOLOGY
Composed of dense fibrous tissue containing:
Straight and tightly packed collagenous fibers
Few elastic fibers.
Some chondroid cells appear with age.
Chondrocytes may be seen.
The space between upper and lower posterior is filled
with highly vascular loose connective tissue.
19. ARTICULATING CAPSULE AND LIGAMENTS
AND SYNOVIAL MEMBRANE
The whole TMJ is enclosed in a fibrous capsule.
It is attached to:
Articular tubercle (in front)
Lips of squamous tympanic fissure
(posteriorly)
Borders of articulating glenoid fossa
Neck of the mandible. (below)
It is lined by synovial membrane.
Laterally, the capsule is reinforced by TMJ
ligaments.
20. HISTOLOGY
Consists of 2 layers:
Outer fibrous capsule – strengthen laterally to form the
temporomandibular ligament.
Inner synovial layer – composed of thin connective tissue layer lined
with:
Synovial cells
Type A : secretes hyaluronic acid
Type B : produces protein rich secretion.
Synovial folds and villi protrude from the surface into the joint
cavity.
Synovial layer of cells line the entire capsule of both upper and
lower joint spaces.
Synovial membrane is very rich in blood supply and contains
lymphatic vessels.
21. SYNOVIAL FLUID
It is clear, straw-colored viscous fluid.
It diffuses out from the rich cappillary network of the
synovial membrane.
Contains:
Hyaluronic acid which is highly viscous
May also contain some free cells mostly macrophages.
Functions:
Lubricant for articulating surfaces.
Carry nutrients to the avascular tissue of the joint.
Clear the tissue debris caused by normal wear and tear
of the articulating surfaces.