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.
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.
Radiographic Assessment of the Prevalence of Pulp Stones in Malaysians
Kannan et al.
JOE — Volume 41, Number 3, March 2015
Pulp stones are discrete calcified bodies found in the dental pulp.
They have calcium phosphorous ratios similar to dentin and can be seen in healthy, diseased, or even unerupted teeth
Radiographically, pulp stones appear as radiopaque structures in the pulp space that frequently act as an impediment during endodontic treatment
Differences between primary and permanent dentitionAkshMinhas
A longitudinal radiological study of children (N = 549) who participated in a comprehensive preventive maintenance program showed that caries related events in the approximal surfaces of permanent teeth differed from those in deciduous teeth. Changes in the approximal surfaces of the younger permanent teeth were more pronounced than of the older primary teeth and differed significantly from 1 year to 2.5 years. These findings can be explained by posteruptive maturation of tooth enamel.
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
Tooth hypersensitivity is a common problem encountered in everyday life and clinical practice. This presentation clearly shows causes, methods of prevention and treatment in such cases.
Radiographic Assessment of the Prevalence of Pulp Stones in Malaysians
Kannan et al.
JOE — Volume 41, Number 3, March 2015
Pulp stones are discrete calcified bodies found in the dental pulp.
They have calcium phosphorous ratios similar to dentin and can be seen in healthy, diseased, or even unerupted teeth
Radiographically, pulp stones appear as radiopaque structures in the pulp space that frequently act as an impediment during endodontic treatment
Differences between primary and permanent dentitionAkshMinhas
A longitudinal radiological study of children (N = 549) who participated in a comprehensive preventive maintenance program showed that caries related events in the approximal surfaces of permanent teeth differed from those in deciduous teeth. Changes in the approximal surfaces of the younger permanent teeth were more pronounced than of the older primary teeth and differed significantly from 1 year to 2.5 years. These findings can be explained by posteruptive maturation of tooth enamel.
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
Tooth hypersensitivity is a common problem encountered in everyday life and clinical practice. This presentation clearly shows causes, methods of prevention and treatment in such cases.
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 pulp cavity is the central cavity within a tooth and is entirely enclosed by dentin except at apical foramen.
It is divided into:
1. Coronal portion pulp chamber
2. Radicular portion root canal
PULP CHAMBER
ROOF OF PULP CAVITY: consists of dentin covering the pulp chamber occlussaly or incisally.
PULP HORN : Accentuation of the roof of pulp chamber directly under a cusp or developmental lobe.
FLOOR OF PULP CHAMBER: runs parallel to the roof and consists of dentin bounding the pulp chamber near cervical area of tooth, particularly dentin forming the furcation area.
CANAL ORIFICES: openings in the floor of pulp chamber leading to the root canals.
ROOT CANALS
Portion of the pulp cavity from the canal orifice to the apical foramen
Divided into 3 section( for convenience)
Coronal third
Middle third
Apical third
The root canal curvature
Straight canal extending with minimal apical curvature
Gradual curvature of canal with straight apical ending
Gradual curvature of entire canal
Sharp curvature of canal near the apex
Success of negotiating narrow curved canal depends on
Degree of curvature
Size and constriction of root canal
Size and flexibility of endodontic instrument blade
Skill of operator
Classification based on canal cross-section
Round/circular
Oval
Long oval
Flattened(flat/ribbon)
Irregular
Vertucci’s Classification
Weine’s Classification
ISTHMUS
A narrow passage or anatomic part connecting two larger structures (root canals)
APICAL FORAMEN
In young incompletely developed teeth the apical foramen is funnel shaped with wider portion extending outward
As root develops the apical foramen becomes narrower
Apical foramen is not the most constricted part of root apex\apical foramen is not always located at the centre of the root apex
LATERAL CANALS AND ACCESSARY FORAMINA
Lateral canals frequently occur in apical third of root
May occur in areas of bifurcation and trifurcation of multirooted teeth
With increasing age, number of accessory foramina reduce due to calcification of contained soft tissue
INFLUENCE OF AGING
METHODS OF DETERMINING PULP ANATOMY
CLINICAL METHODS
Anatomy studies
Radiographs
Explorations
High resolution compound tomography
Visualisation endogram
Fiberoptic endoscope
Magnetic resonance imaging
IN VITRO METHODS
sectioning of teeth
use of dyes
Contrasting media
Scanning electron microscope analysis
VARIATIONS IN INTERNAL ANATOMY
Variations in development
Gemination
Fusion
Concrescence
Taurodontism
Talon’s cusp
Dilaceration
Extra root canal
Dens invaginatus
Dens evaginatus
Maxillary Central Incisor
Maxillary Lateral Incisor
Maxillary Canine
Mandibular Central and Lateral Incisors
Mandibular Canine
Maxillary First Premolar
Maxillary Second Premolar
The typical second premolar has one
root and one canal and sometimes
has an apical distal curvature.
The Type I canal form is p
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 Slide, gives a Brief introduction to the Anatomy of the tooth specifically the outer shell, the enamel, including the structures, development and abnormalities.
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The dentin and pulp are considered a complex by its similar embryology and function. It is in our practice to distinguish both by its unique functions it serves in our tooth.
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2. Pulp
• The pulp cavity occupies the
central area of the tooth
enclosed by dentin.
• The pulp has the cellular,
fibrous, neural and vascular
components of typical loose
connective tissue.
• The main function of the pulp
is the production and
maintenance of the dentin. A, Pulp cavity;
B, Dentin;
C, Odontoblasts
3. Nerve Plexus of Raschkow
• Sensory nerve fibers that originate from
inferior and superior alveolar nerves
innervate the odontoblastic layer of the
pulp cavity.
• These nerves enter the tooth through
the apical foramen as myelinated nerve
bundles.
• They branch to form the
subodontoblastic nerve plexus of
Raschkow which is separated from the
odontoblasts by a cell-free zone of
Weil.
• In addition to the sensory nerves,
sympathetic nerve bundles also enter
the tooth to innervate blood vessels.
A, Odontoblasts;
B, Cell-free zone of Weil;
C, Nerve plexus of Raschkow
4. Vascular supply of pulp cavity
• The pulp cavity receives blood
from one arterial that enters
the apical foramen and courses
directly to the coronal pulp.
• Within the coronal pulp
numerous arterial branches
form a interconnected network
of blood vessels as seen here
following filling with ink.
• The smallest capillary loops
are in the subodontoblastic
zone (arrow).
5. Structures within the pulp cavity
• Arterioles, small
nerve bundles
and fibroblasts
are found in the
pulp cavity
A, Nerve bundle;
B, Arteriole;
C, Fibroblasts
6. Structures within the pulp cavity
• Arterioles can be
distinguished from
venules within the
pulp cavity by the
thickness and
contours of their
vascular walls.
A, Arteriole; B, Venule;
C, Nerve bundle (cut in cross-section)
7. Subodontoblastic region
• Below the odontoblastic
layer is the cell-free zone
of Weil followed by a
cell-rich zone which is
thought to provide
replacement cells for
odontoblasts that die.
• Within these zones are
the nerve plexus of A, Cell-rich zone;
Raschkow and capillary B, Cell-free zone;
C, Odontoblastic layer;
network. D, Dentin
8. Denticle
• The formation of a true
pulp stone or denticle is
brought about by the
differentiation of pulp cells
to odontoblasts within the
pulp cavity.
• The resulting body has an
appearance characteristics
of dentin with tubules
radiating out from the
center and predentin A, True pulp stone;
around the periphery. B, Pulp cavity;
C, Dentin
9. False pulp stone
• The formation of a false
pulp stone is caused by the
nonspecific calcification of
tissue around a central
nucleus within the pulp
cavity.
• This pulp stone is
characterized by concentric
layers of mineralization
rather than radiating
tubules as seen in true pulp
stones.
A, False pulp stone; B, Pulp cavity
10. Regions of the pulp cavity
• The pulp cavity can be
divided into two main
regions: the coronal pulp
is located within the
crown of the tooth and
the radicular pulp is
located within the root.
A, Coronal pulp;
B, Radicular pulp
15. أدعيه قبل المذاكره وبعدها...
قبل المذاكرة
اللهم أنً اسألك فهم النبٌٌن و حفظ المرسلٌن و المالئكة المقربٌن ، اللهم أجعل ألسنتنا عامرة بذكرك و قلوبنا بخشٌتك و أسرارنا
بطاعتك أنك على كل شًء قدٌر .. حسبنا هللا و نعم الوكٌل
بعد المذاكرة
اللهم أنً استودعتك ما قرأت و ما حفظت و ما تعلمت فرده عند حاجتً الٌه انك على كل شًء قدٌر ، حسبنا هللا و نعم الوكٌل
يوم اإلمتحان
اللهم أنً توكلت علٌك و سلمت امري الٌك ال ملجأ و منجا منك إال الٌك
دخول القاعة
رب أدخلنً مدخل صدق و أخرجنً مخرج صدق و أجعل لً من لدنك سلطانا نصٌرا
قبل البدء بالحل
رب أشرح لً صدري و ٌسر لً أمري و احلل عقدة من لسانً ٌفقه قولً بسم هللا الفتاح ، اللهم ال سهل أال ما جعلته سهال و انت تجعل الحزن اذا
شئت سهال ٌا ارحم الراحمٌن
أثناء األمتحان
ال إله اال انت سبحانك أنً كنت من الظالمٌن ٌا حً ٌا قٌوم برحمتك أستغٌث ، رب ان مسنً الضر أنك أرحم الراحمٌن
عند النسيان
اللهم ٌا جامع الناس فً ٌوم ال رٌب فٌه أجمعنً و ضالتً
بعد األنتهاء
الحمد هلل الذي هدانا لهذا و ما كنا لنهتدي لوال أن هدانا هللا