The document summarizes the functions of salivary glands and saliva. It discusses:
1. The major salivary glands - parotid, submandibular and sublingual glands - and their duct systems, secretory functions, and age-related changes.
2. The minor salivary glands distributed in the oral mucosa and their secretions.
3. The protective, buffering, tooth integrity maintenance, antimicrobial, taste, digestive, and tissue repair functions of saliva. Saliva helps prevent dental caries, aggregates bacteria, and contains enzymes that begin starch and lipid digestion.
Definition
Classification Of Salivary Glands
Anatomy of salivary glands
Development of salivary glands
Structure Of Salivary Glands
Histology of major and minor salivary glands
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.
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.
Definition
Classification Of Salivary Glands
Anatomy of salivary glands
Development of salivary glands
Structure Of Salivary Glands
Histology of major and minor salivary glands
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.
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.
Periodontal considerations in fpd/ orthodontic straight wire techniqueIndian 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.
Coronal and radicular pulp
Apical foramen
Accessory canal
Functions of dental pulp
Components of dental pulp
Functions of pulpal extracellular matrix
Organization of cells in the pulp
The principle cells of the pulp
The pathways of collagen synthesis
Matrix and ground substances
Vasculature and lymphatic supply
Innervation of Dentin- pulp complex
Disorders of the dental pulp
Advances in pulp vitality testing
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.
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.for more details please visit
www.indiandentalacademy.com
Periodontal considerations in fpd/ orthodontic straight wire techniqueIndian 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.
Coronal and radicular pulp
Apical foramen
Accessory canal
Functions of dental pulp
Components of dental pulp
Functions of pulpal extracellular matrix
Organization of cells in the pulp
The principle cells of the pulp
The pathways of collagen synthesis
Matrix and ground substances
Vasculature and lymphatic supply
Innervation of Dentin- pulp complex
Disorders of the dental pulp
Advances in pulp vitality testing
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.
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.for more details please visit
www.indiandentalacademy.com
salivary gland lecture
oral biology department fayoum university
Prof.Dr. Sahar shawkat ppt - Profesessor and head of the department -cairo university
presented by Dr. Dina Hassouna
lecturer at oral biology department fayoum university
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.
Salivary Glands By DMD Students 3rd yearEsperSoriano
our salivary glands lubricate your mouth, help you swallow, aid in digestion and help protect your teeth against harmful bacteria. You have three major types of salivary glands, including your sublingual, submandibular and parotid.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
2. Functions of intercalated ducts:
• Convey the saliva from the terminal
secretory units to the striated ducts
• Cells of the proximal portion of these ducts
show indication of secretory function
• Capable of reabsorping proteins from the
lumen
• Represent a reserve of UMC which offer a
degree of regeneration
• Antibacterial protein ( Lactoferrin) has been
localized in these ducts.
3. b-Striated duct:
1- Lined by a single layer of columnar
cells with numerous apical microvilli.
2- Central nucleus.
3-Eosinophillic cytoplasm.
4- Prominent Basal striations due to :
a- membrane infolding
b-numerous elongated mitochondria
5- a-Cell organells …………..,
b-junctional complex (apically)&
desmosomes (laterally)
2
a
b
4
Apical end
4. Functions of the striated ducts:
1- Modify the secretion passing through them
(how ?)
A-Their lining cells do not reabsorb water
B-Actively reabsorb Na, Cl ions
C-Secret K ,HCO3 ions
Thus the secretion is changed from
ISOTONIC
With high Na,CL
and low K ions
HYPOTONIC
with low Na , Cl ions
and high K ions
5. 2-Iodine concentration takes place in this
duct helping in Iodine metabolism.
3-The lining cells contains:
• Kallikrein (affect H2O & electrolyte
balance)
• Amylase ( transferred by these ducts
from the serum to saliva)
• Lysosomes ( have antibacterial effect)
6. c-Excretory duct and main duct
1- Interlobular ducts lined
by tall columnar cells.
2- Interlobar ducts are lined
by pseudostratified
columnar epithelium with
goblet cells.
3- Main duct is lined by
stratified squamous
epithelium
1 2
3
Goblet cell
7. Function of the excretory ducts:
• Covey the secretion to the oral cavity
• Reabsorb Na, Cl & secrete K, HCO3
The ductal reabsorption of Na, Cl
exceeds
secretion of K, HCO3………leading to
HYPOTONIC saliva
8. 1
DUCT
MAIN EXCRE.DUCT EXCRETORY DUCT STRIATED DUCT INTERCALATED
Modification of
primary
secretion.
Passive conduit
Sec. Granules.
Minor contribution
in secretion
Reabsorbed
from primary
secretion .
Secreted
in primary
secretion.
Secreted.
Reabsorbed
FUNCTIONS OF SALVARY GLAND DUCTS
Acinus
9. B- Connective tissue.
Form a capsule surrounding the gland from which
septa or strands extend to subdivide the gland into
major lobes. Lobes are further subdivided into
lobules. Lobe
The intercalated and
Striated ducts are
considered
intralobular ducts.
The excretory ducts
on the other hand are
considered
interlobular ducts.
11. 4- Blood supply:
Follow the excretory duct to form:
a-Dense capillary network till striated duct.
b-Less capillary loops around Intercalated Duct
&Secretory portion.
c- Arteriovenous anastomoses.
5- Nerves:
*Unmyelinated axons surrounded by cytoplasmic
processes of the shwann cells.
*Follow the course of the vessels forming plexus in
the C.T. near the Secretory portion.
12. Types of human salivary glands
1- Major salivary glands:
A- Parotid. b- sumandibular. c-sublingual.
2-Minor salivary glands:
A-Labial &buccal gland. B- Palatine gland.
C- Glossopalatine gland. D-Lingual gland.
14. *It’s the largest salivary gland.
*Its superficial portion lies subcutaneously.
*Its deeper portion lies behind the ramus.
*Pure serous in adult& mixed in infant &old age
*Main duct Stensen’s duct.
*C.T. capsule surrounds it & sends septa to divide
the gland into lobes &lobules.
*Secretes 25-30% of saliva.
*Intercalated duct longer than in the other glands.
A- Parotid gland
17. b- Submandibular gland
*Next in size.
*Lies in the submandibular triangle behind &
below the free border of the mylohyoid M. with
small extension above it.
*Mixed predominatly serous.
*Main duct Wharton’s duct.
*Extensive C.T. capsule.
*Secretes 60-70%of secretion.
*Straited ducts longer than those of the parotid.
20. C-Sublingual gland
*Smallest.
*Lies between floor of the mouth &mylohyoid
muscle.
*The major gland is mixed predominantly mucous.
*The minor gland are pure mucous.
*Major-Bartholin’s duct opens near sumand.duct.
*Minor-Rivinus ducts (8-10) open in sublingual
fold.
*Poorly defined C.T. capsule with prominent C.T.
septa.
*Secretes 5%or less of saliva.
21.
22. Comparison between major salivary glands
Sublingual
Mixed
Predominant
Mucous
Minor
subling.
(pure
mucous)
Submandibular
Mixed
predominant
serous
Parotid
Pure
serous
in adult
Mixed in
infants
& old
age
The type of
the gland
Bartholin
(Rivinus 8-
12)
Wharton
Stenson
Main ducts
24. Sympathatic innervation….from superior cervical ganglion
by post-ganglionic fibers (for all glands)
Parasympathetic innervation:
For parotid gland…..from glossopharyngeal nerve
which reach the gland through otic ganglion & auriculo –
temperal n.
For sub-mand.&sub-ling…..from facial nerve which reach
the gland through submandibular ganglion
25. 2-Minor salivary glands:
- Distributed throughout the submucosa.
- Small, discrete masses.
- Lack distinct capsule
- Posses numerous short ducts that open
directly in the oral cavity.
- Occurance of focal accumulation of
lymphocytes around their duct wall.
- Secrete high amount of IgA concentration.
-Secrete 7% of saliva.
26. A-Labial &buccal gland.
-More glands are present in the lower lip.
- They are present on the surface of the
orbicularis oris muscle while in the buccal
mucosa they are present on the surface &
inbetween the buccinator muscle.
-Mixed gland but ultrastructurally they only
show mucous cells.
- Buccal glands duct open in the third molar
area & are known as molar gland.
28. B- Palatine gland&
C- Glossopalatine gland.
Palatine:
Pure mucous.
In Hard Palate 250 Soft Palate 100
Uvula12
Glossopalatine:
Pure mucous.
Found in the isthmus region.
31. 1-Blandin- Nuhn
Ant. part mucous, Post. Part- mixed
Open in the ventral surface
2-Von Ebner (VE) Pure serous
under circumvallate& folliate papillae
Wash the trough, dissolve the food,
Contain digestive enzymes ( amylase &
lipase ), and protective enzymes
(Peroxidase & lysozymes ).
3-Weber Pure mucous
Open in the lingual crypt.
D-Lingual gland
32.
33. Age changes of salivary glands
1- Fatty degenerative change.
2- Atrophy of a part or a whole terminal portion
with its replacement by fibrous tissue (Fibrosis).
3-Accumulation of lymphocytes in the stroma.
4- in the salivary secretion which leads to xerstomia.
5- xerstomia leads to difficulty in eating&swallowing
as well as in dental caries.
6- Oncocyte cells in number & may form neoplasm
in old people.
35. Saliva
A-Definition:
Saliva is a complex fluid produced by
the salivary glands, whose important
role is maintaining the well being of the
mouth.
For ex. patients with deficiency of
salivary secretion experience difficulty
in eating, speaking& swallowing &
become prone to mucosal infections &
rampant caries.
36.
37.
38. 1-Protective functions: It provides a washing action
that clears harmful substances in the oral cavity.
Functions of saliva:
2-Buffering action: Mucin lubricates oral tissues and
forms a barrier against microbial products.
Saliva maintains neutral pH in the oral cavity which
prevents demineralization of enamel that would occur due
to acids produced by sugar metabolizing bacteria.
39. 3-Maintenance of tooth integrity:
*Saliva is rich in calcium and phosphate ions that leads to
post eruptive maturation of enamel which increases their
hardness and resistance to demineralization.
*It helps to protect the teeth from dental caries.
*The cleansing action of saliva and the presence of high
molecular weight glycoproteins which aggregate specific
strains of microorganisms reduce the concentration of
substrates and number of bacteria in the oral cavity.
40. 4-Defense: (antimicrobial action) (bacteriostatic)
*Salivary IgA is an important factor in oral immune defense,
together with salivary agglutinins (glycoproteins)
*IgA causes clumping of certain microorganisms thus
preventing them from adhering to oral and dental surfaces.
*Other components namely histatins, lysozyme, lactoferrin
and peroxidase inhibit bacterial growth.
41. 5-Taste functions
• * It enables the pleasurable sensations
of food to be experienced.
• *It permits the recognition of noxious
substances.
• *Contains protein Gustin necessary for
growth & maturation of taste buds
42. 6-Digestive functions:
• Saliva has digestive enzymes as
*amylase :
carbohyderate…………Glucose &
Maltose
*Lingual lipase produced by von Ebner
Triglycerides diglycerides & fatty acids
43. 7-Tissue repair
• Experimentally;
Clotting time …….accelerated when
saliva is mixed with blood
Rate of wound contraction…..increased
in presence of saliva as it contains
epidermal growth factor produced by
submandibular s.g in mice.