This document discusses endodontics, including the anatomy of tooth cavities and root canals. It describes endodontic instruments such as files, reamers, broaches and rotary instruments. Common endodontic procedures like tooth cavity disclosure, amputation, and extirpation of the pulp are also outlined. Methods for root canal treatment including step-back, crown-down, and balanced force techniques are explained. Considerations for adequate root canal preparation and potential errors are summarized.
A quick and concise recap of Endodontic Instruments.
This presentation resolves the basic doubts within terminologies and provides visual conceptualization of the same.
About failures of root canal treatment and retreatment. This presentation describes about various techniques for gutta percha removal, posts removal, pastes removal, and removal of separated instrument
A quick and concise recap of Endodontic Instruments.
This presentation resolves the basic doubts within terminologies and provides visual conceptualization of the same.
About failures of root canal treatment and retreatment. This presentation describes about various techniques for gutta percha removal, posts removal, pastes removal, and removal of separated instrument
The second phase of a root canal treatment.
This presentation covers the most basic techniques of root canal shaping.
provides the reader with a concise overview of the big picture.
A concise and brief presentation on cleaning and shaping of root canals. Colorful and well pictured. Ideal for UG students and PG students to get a good understanding of BMP techniques.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
The second phase of a root canal treatment.
This presentation covers the most basic techniques of root canal shaping.
provides the reader with a concise overview of the big picture.
A concise and brief presentation on cleaning and shaping of root canals. Colorful and well pictured. Ideal for UG students and PG students to get a good understanding of BMP techniques.
This presentation is all about restoration of endodontically treated teeth, prefabricated post and core, cast post and core, direct and indirect technique.
explained with Limited matter moreover I have included all the images. if you go through a standard textbook and referred to this PPT it will help you so much I hope It helps you
Biomechanical preparation is the crucial step in endodontic procedure. Biological principles can only be preserved if the mechanical shaping of the perticular canal is completed with the cordial following of the endodontic priciples. This presentation is aimed to simplify the various endodontic techniques for root canal shaping in as conservative as possible manner.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
1. Endodontics. Definition. Clinical and anatomical
structure of teeth’ cavities and root canals of teeth.
Endodontic instruments. Basic endodontic
procedures: tooth cavity disclosure, amputation,
extirpation of the pulp. Methods of medicament and
instrumental treatment of root canals ("Step-Back",
"Crown-down" techniques). Medications. Mistakes
and complications in root canal treatment.
Lecturer: Levkiv Mariana
Department of Therapeutic Dentistry
TSMU
2.
3. Anatomy of tooth cavity
Parts of a pulp
cavity.
The pulp cavity
of this
mandibular
second molar is
made up of a
coronal pulp
chamber with
pulp horns and
two root (pulp)
canals.
5. • Anatomy of apical part of the root
anatomical apical
hole (apical foramen)
- a place of transition
the dentin into cement;
physiological hole
(apical constriction) -
the border between
pulp and periodontium,
placed 1 mm away
from the X-ray hole;
X-ray hole.
6. Topographical and anatomical features of teeth cavities
of different group of teeth.
Access preparations into
pulp chambers showing
orifices to canals. Ideally
shaped openings provide
access into the pulp
chamber for endodontic
treatment. Pulp canal
orifices on the floor of
each pulp chamber
correspond with the
number and location of
pulp canals in each tooth.
12. Endodontic instruments
According to ISO endodontic instruments are classified:
Hand instruments: files(K
and H), barbed broaches,
spreader and plugger
(vertical and lateral gutta
percha condensors ).
Rotary instruments: H-
files and K-reamers for
slow handpiece, lentulo
spiral filler/rotary paste
filler.
Rotary instruments: Gates
Glidden drills, Peeso reamer
drills.
Pins: gutta percha pins,
silver
13. • But its more convenient to use classification by
Curson(1996) that is based on clinical usage of
endodontic instruments.
Curson’s classification is as follows:
• - diagnostic instruments: root needles(Miller
needles)
• - instruments for removing the soft teeth’
tissues: barbed broaches
• - instruments for passing, enlargement and
shaping the root canals : (K-reamers, K- files,
H-files)
14. The main endodontic instruments and their use
Barbed broaches
•Functions and precautions
•• Finger instruments
•• Disposed of in the sharps’ container
••Used to remove the intact pulp
•• ‘Barbs’ on the broach snag the pulp
• to facilitate removal
•• They need to be used cautiously as
•they can bind and break in the canal
•Varieties
•Available in different sizes and widths
15. • Gates Glidden drills
• Function, features and precautions
• •To enlarge the coronal third of the canal during endodontic treatment
• • Small flame-shaped cutting instrument used in the
conventional handpiece
• • Different sizes – coded by rings or coloured
bands on shank
• •Are slightly flexible and will follow the canal
shape but can perforate the canal if used too deeply
• • Dispose of in sharps’ container
• • Should be used only in the straight sections of
• the canal
16. • Peeso reamer drills
Function, features and precautions
• •To remove gutta percha during post preparation
• • Small flame-shaped cutting instrument used in the conventional handpiece
• • Different sizes – coded by rings or coloured
bands on shank
• • Peeso reamers are not flexible or adaptable,
if not used with care can perforate canal
• • Dispose of in sharps’ container
17. • NiTi (Nickel titanium) rotary instruments
• Function, features and directions for use
• • Used to clean and shape the canals
• • Used with endodontic handpiece and motor
• • NiTi is flexible and instruments follow the
• canal outline very well
• • Several varieties of systems with different
• sequences of instruments are used
• • Important to follow the manufacturer’s
• recommended speeds and instructions for use
• Varieties
• Different lengths: 21mm and 25mm
18. • Reamers Rarely used or indicated. Disadvantages of
reamers include their inflexibility with size, which⇑
can result in a wider canal being cut apically. Have
now been replaced by files.
• Files These are used either with a longitudinal
rasping or a rotary action (e.g. clockwise direction).
• The main types of file available are:
• K-type-file. Made by twisting a square metal blank.
• K-flex file. Similar to K-file but made by twisting a
rhomboid shape blank alternating blades with acute
and obtuse angles. More flexible than K-file but
becomes blunt more quickly.
• Hedstroem file.
A. K - style file.
B. K - style reamer.
C. K - flex file.
19. Hedstroem file. Made by
machining a continuous
groove into a metal blank.
More aggressive than K-file.
Must never be used with a
rotary action as liable to
fracture.
20. • Endodontic K files. Also called: Root canal hand files
• Function, features and precaution
• • Finger instrument
• • Colour coded by size. The 6 colours used most often are: size 15 (white);
20 (yellow); 25 (red); 30 (blue); 35 (green); 40 (black). Also available in size
6 (pink), 8 (grey) and 10 (purple)
• • Operator gradually increases the size of the
• file to smooth, shape and enlarge canal
• • The larger the number of the file, the larger
• the diameter of the working end
• • Disposed of in the sharps’ container
• Varieties
• • Different lengths: 21mm, 25mm and 30mm
21. • Lentulo spiral filler/rotary paste filler
• Function and features
• • Small flexible instrument used to place materials into
the canal
• • Fits into the conventional handpiece
• • Use with caution as it can be easily broken
• • Different sizes available
23. Common terms and expressions used in endodontics
Pulpotomy (amputation)
Pulpectomy (extirpation)
Tooth cavity disclosure
24. The main purpose of root canal treatment
is:
•removal of pulp;
•removal of infected dentine from the
inner wall of the root canal;
•enlargement and shaping a root canal
for its adequate filling.
The procedure of root canal treatment
has such stages:
• - disclosure of the tooth cavity;
• - disclosure of the root canal orifices;
• - the root canal passing;
• - the root canal enlargement;
• - the root canal shaping.
25. Manipulations of root canal treatment (RCT) are carried out
manually or with the help of rotary instruments by several
treatment methods, the most widespread among them are:
•apical-crown - envisage treatment from the apical hole to
canal orifices with gradually increasing of instrument
diameter( e.g. from №10 -№ 40)
•crown-apical - envisage root canal
treatment that starts from canal orifices
to apical hole with a gradual decrease
in instrument diameter(e.g. from №40 –
№ 10)
•hybrid method of treatment - have been
developed out of the two methods.
26. Step-back technique The apical part of the root canal is
prepared first and the canal is then flared from apex to crown.
Blockage of canals may occur using this technique, and
irrigation can be difficult.
27. Crown-down technique This (along
with several others) prepares the
coronal part of the canal before the
apical part. This has advantages and is
the preferred technique.
28. Balanced force technique This involves using blunt-tipped files with an
anticlockwise rotation whilst applying an apically directed force. It requires
practise to master but is particularly useful when preparing the apical part of
severely curved canals.
(A) In the balanced force technique the file
is placed to working length and rotated
clockwise 90 degree with light pressure to
engage dentin.
(B) The file is then rotated
counterclockwise 120 degree while apical
pressure is maintained to cut and enlarge
the canal. Debris is removed with a final
clockwise rotation that loads the flutes
with loosened debris.
30. • Advantages of orifice enlargement
• • Effectively, the curvature in the coronal part of the root canal,⇓
allowing straighter access for files to the apical region. It therefore
reduces the likelihood of apical transportation (zipping).
• • It allows improved access for the flow
of irrigant solution within the canal.
• • It reduces the likelihood of apical extrusion
of infected material as most of the canal
debris is removed before apical instrumentation
takes place. This is particularly important
because the majority of bacteria in an infected
root canal are located in the coronal region.
31. Drugs for chemical enlargement of root
canals
Type of active ingredient The product, the manufacturing
company
A solution of EDTA Largal ultra (“Septodont”)
Edetat solution (“Pierre Roland”)
Endofree (“Dencare”)
A solution of citric acid and
propionic acid
Verifix (“Spad”)
Gels based on EDTA Canal+ (“Septodont”)
HPU15 (“Spad”)
RC-prep (“Premier”)
Канал Глайд («Радуга-Р»)
32. Root canal treatment should include thorough mechanical
debridement and medicatment treatment as well
(antiseptic solutions), these two procedures should go
together.
Irrigants. Dilute sodium hypochlorite is generally
considered to be the best irrigant as it is bacteriocidal and
dissolves organic debris.
33. To be sufficiently enlarged;
To have a conical shape (tapered);
To have formed apical ledge;
Do not contain a necrotic dentine;
Do not have typical smell;
To be clean and dry;
Do not have a painful reaction to
percussion.
Prepared root canal for sealing, regardless of the method of
instrumental treatment, must fulfill the following criteria as follows: