The document discusses various aspects of exodontia, including:
1. Local anesthesia techniques used to control pain during extraction, including periodontal ligament injections and intraosseous injections.
2. Sensory innervation of the jaws and duration of anesthesia when using local anesthetics with and without vasoconstrictors.
3. Specific techniques for extracting different types of maxillary teeth, such as canines requiring buccal, palatal, and rotational movements to remove.
Endodontic diagnosis could be a difficult task in most occasions, but with clinical assessment and careful history taking this task would be easier and clearer.
This lecture assembled by Osama Asadi, B.D.S, concentrating at the basic science of diagnosing pulpal and periapical diseases and their differential diagnosis and treatment plan. also endodontic case sheet and review-cases attached to the lecture at the end to help proper understanding of the subject.
Endodontic diagnosis could be a difficult task in most occasions, but with clinical assessment and careful history taking this task would be easier and clearer.
This lecture assembled by Osama Asadi, B.D.S, concentrating at the basic science of diagnosing pulpal and periapical diseases and their differential diagnosis and treatment plan. also endodontic case sheet and review-cases attached to the lecture at the end to help proper understanding of the subject.
Dental Management of a Medically Compromised Patients - Presented by Dr. Shweta and Parray as a part of Dhaka Dental COllege OMS Department Weekly Presentation Program
A presentation on the instructions to be given to complete denture patients at the insertion appointment. Dealing with patients can be hard at times but with a proper approach, a strong rapport can be formed with the patient.
Dental Management of a Medically Compromised Patients - Presented by Dr. Shweta and Parray as a part of Dhaka Dental COllege OMS Department Weekly Presentation Program
A presentation on the instructions to be given to complete denture patients at the insertion appointment. Dealing with patients can be hard at times but with a proper approach, a strong rapport can be formed with the patient.
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.
Surgical extraction is the method by which a tooth is removed from its socket, after creating a flap and removing part of the bone that surrounds the tooth.
This technique is relatively simple and can be done by general Practitioner if the basic principles of the surgical technique are followed.
All the mistakes are rectified.Complete and precise knowledge about EXODONTIA .I would like to again focus on compatibility of this ppt;some pictures differ from original one.Animations and Transitions added are not visible .Good for beginners to understand and remember.Images give you better way to grasp.Enjoy and have fun watching this ppt.
EXODONTIA CAN BE DEFINED AS THE PAINLESS REMOVAL OF THE WHOLE TOOTH OR A TOOTH ROOT WITHOUT TRAUMA TO THE INVESTING TISSUES, SO THAT THE WOUND HEALS UNEVENTFULLY AND NO POST OPERATIVE PROSTHETIC PROBLEM IS CREATED.
Exodontia or Extraction is the painless removal of whole tooth or tooth root with minimal trauma to the investing tissues, so that the wound heals uneventfully and no post-operative prosthetic problem is created.
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.
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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
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
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- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
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MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
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.
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
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Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
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
2. Introduction
It is a procedure that incorporates
principles of surgery, physics and
mechanics.
Painless removal of the tooth or root
with minimal injury to the
surrounding soft tissue & bone
2
3. Cont.
Removal of tooth does not require
large amount of force, but fine and
controlled forced in such a manner
that tooth is not pulled from bone but
lifted gently from alveolar process
3
4. Pain and Anxiety control
Local anesthesia
Profound local anesthesia results in loss
of pain, temperature and touch but not
pressure.
When the tooth has pulpitis or
surrounding soft & hard tissues inflamed
or infected, periodontal injection is
given, that gives anesthesia for 15-
20min. If it fails intra osseous injection
can be given.
4
5. Sensory innervation of jaws
Inferior alveolar nerve all mandibular
teeth, buccal soft tissues of PM,
canine & incisors.
Lingual nerve; Lingual soft tissues of
all teeth
Long buccal nerve: Buccal- soft
tissues of molars.
5
6. Cont.
Anterior superior alveolar nerve;
maxillary incisors and canine, buccal
soft tissues of incisors and canines.
Middle superior alveolar nerve: Max.
PM & MB root of 1st molar, Buccal
soft tissue of PM.
6
7. Cont.
Post sup. Alveolar nerve: Max.
molars except a portion of 1st molar,
buccal soft tissues of molars.
Greater palatine palatine nerve;
Lingual soft tissues molars &
premolars.
Nasopalatine nerve: Lingual soft
tissues of incisors and canines.
7
8. Cont.
Mandibular PM region buccal soft
tissue innervated primarily by mental
branch of IAN and also by terminal
branches of long buccal nerve.
8
9. Duration of Anesthesia
1. Local anesthesia with out
vasoconstrictors:
Max. teeth-10-20min
Mand. teeth- 40-60min.
Soft tissue- 2-3 HR
9
10. Cont.
2. Local anesthesia with
vasoconstrictors
Max. teeth 50-60 min
Mand. teeth 90-100min
Soft tissue 3-4 HR
10
11. Cont.
3. Long acting local anesthesia with
vasoconstrictors
Max. teeth 60-90 min.
Mand teeth - 3HR
Soft tissue 4-9 HR
11
12. Sedation
In case of mild anxiety- proper
explanation of procedure; assurance
that there will not be sharp pain,
expression of concern caring,
empathy will reduce anxiety.
In moderate anxiety: Preoperative
oral diazepam provide rest at night
before surgery and relieve anxiety in
morning.
12
13. Cont.
Sedation by inhalation of nitrous
oxide or IV sedation with diazepam
can be given in severe anxiety.
13
15. Indications for removal of teeth
Severe caries: that can not be
restored.
Pulpal necrosis: if endodontic Rx can
not be performed becoz Pt declines,
or root canal that is tortuous, calcified
or endodontic failure.
Severe periodontal disease: excessive
bone loss and irreversible tooth
mobility.
15
16. Cont.
Mal - opposed teeth; if they
traumatize the soft tissue or can not
be repositioned by orthodontic Rx
(Max. III M. in severe buccal version
and causes ulceration & trauma
on cheek or teeth that are hyper
erupted becoz of loss of teeth in
opposing arch.
16
17. Cont.
Orthodontic reasons: Max. & Mand
PMs Mand. incisors are commonly
extracted.
Cracked teeth: or with fractured root
Preprosthetic extraction: teeth
interfering with design and
placement of full dentures, partial
dentures
17
18. Cont.
Impacted teeth: that is unable to
erupt to functional occlusion.
Supernumerary teeth: Impacted,
interfering with eruption of
succedaneous teeth or causing
resorption and displacement of
adjacent teeth should be extracted.
18
19. cont.
Teeth associated with pathologic
lesions: If maintaining the tooth
compromises, complete surgical
removal of lesion.
Pre - radiation therapy: remove
teeth in line of radiation therapy.
Severe attrition, abrasion or erosion
19
20. Cont.
Teeth involved in jaw #: If tooth is
severely luxated, tooth in # line
should be removed.
Esthetics: Severely stained,
malopposed or protruding teeth are
removed.
Economics: inability of PT to pay or to
take time from work may require the
tooth to be extracted
20
21. Contraindications for removal of
teeth
Systemic contraindications:
Uncontrolled diabetes
End stage renal disease with severe
uremia
Uncontrolled leukemia
Uncontrolled cardiac disease
Unstable angina pectoris
Recent MI
21
22. Cont.
Severely uncontrolled hypertension
Pregnancy 1st and last trimester
Bleeding disorders like hemophilia
Platelet disorders
Patients on anticoagulants
22
23. Cont.
Local Contraindications:
H/o therapeutic radiation- causes
osteoradio necrosis
Tooth in area of tumour: disseminate
cells and cause metastasis
A/c infection
Central hemangioma
23
24. Clinical Evaluation of teeth for
removal
Tooth to be extracted is examined to
assess difficulty of extraction.
Access to tooth: if mouth opening of
PT is compromised-surgical
extraction.
Mobility of tooth: teeth with less than
normal mobility should be assessed
for hypercementosis and ankylosis-
surgical removal
24
25. Cont.
Condition of crown: if large portion
of crown is decayed by caries or
tooth with large amalgam
restoration, forceps is placed as far
apical as possible.
25
26. Cont.
If large amount of calculus is
present on tooth, it should be
removed before extraction
otherwise it will interfere with
application of forceps or
contaminate socket after
extraction.
26
27. Cont.
If adjacent tooth has amalgam
restoration or undergone endodontic
therapy, care must be taken while
using elevators.
27
28. Radiographic Examination of tooth
for removal
IOPA shows portion of crown and root
of tooth under consideration
If it is a I° tooth its relationship with
a succedaneous tooth should be
visible
Relationship of associated vital
structures
For Max. teeth relation with max. sinus.
28
29. Cont.
For Mand. Molars inferior alveolar canal
For Mand premolars relation with mental
foramen
Configuration of roots- If excess
curvature surgical extraction
Length of roots
Hypercementosis
Root # more liable to #
29
30. Cont.
Root resorption liable to #
H/o endodontic Rx -tooth is brittle or
ankylosed -so surgical extraction.
Condition of surrounding bone
If more radio opaque- condensing
osteitis or sclerosis- so difficult to
extract.
Periapical pathologies- should be
removed after extraction.
30
31. Patient & surgeon Preparation
All patients should be considered as
having blood born disease.
Surgeon should wear surgical gloves,
mask, eyewear with side shield, long
sleaving gowns.
If surgeon has long hair it should be
covered with surgical CAP.
31
32. Order of extraction
Lower teeth are removed before the
upper & posteriors are removed
before anteriors to prevent bleeding
from socket obscuring field of
operation (prof.J.Moore)
32
33. Methods of extraction
Closed or intra-alveolar
Open or transalveolar or surgical
Stobie technique – extraction of
multiple mandibular anteriors by
using elevators b/w teeth
33
34. Chair position for forceps
extraction
Best position is one that is most
comfortable to PT & to surgeon.
Correct position allows surgeon to
deliver force with arm and shoulder
and not with hand.
For Max. extraction,
34
35. Maxillary teeth
Position of chair
Height of chair is such that height of
patient's mouth is at or slightly below
operator's elbow.
Chair is tipped backward that
Max.occlusal plane is 60° to floor
35
36. Cont.
Position of patient
During procedures of Max. Right + left
quadrant PT's head is turned towards
operator.
For Max. Ant. Teeth, PT should be
looking straight ahead.
Position of operator
Front & right side of the patient for right
handed operator & reverse in left handed
operator
36
37. Cont.
Position of left arm
Left upper teeth, thumb supports the
palatal alveolar bone & index finger
retract the buccal tissues
Right upper teeth – thumb retracts the
buccal tissues & index finger supports
the palatal alveolar bone
In left handed operator the reverse
37
38. Mandibular teeth
Position of chair
Chair is positioned in such a way that,
Mand. occlusal plane is parallel to floor.
Surgeon's arms are inclined downward at
an angle of 120° at elbow.
Position of patient
In Mand. right post teeth-PT is turned
towards surgeon.
38
39. Cont.
Position of operator
Mand. right post teeth, operator is
behind the pt &
In Mand. left post region, surgeon is in
front of PT.
Left handed operator the position is
reverse
If surgeon chooses to sit, the PT is at a
more lower level than standing and other
position are similar
39
40. Cont.
Position of left arm
Lower left teeth – thumb supports the
mandible &index finger retracts the
buccal soft tissues ,middle finger controls
tongue
Lower right teeth – index finger retract
the buccal tissues, thumb controls the
tongue & other fingers supports the
mandible.
Reverse for left handed operator
40
41. Mechanical Principles Involved
in tooth extraction:
Elevators I°rly works on lever
principle E.g straight elevator
Wedge principle is also used when
elevator is used to luxate tooth.
Wheel and axle principle is used by
triangular shaped elevators
E.g Cryer's elevator
41
42. Principles of forceps use
Use of forceps:
To expand bony socket
To remove tooth
Forceps should be placed below CEJ
Traction towards least resistance
42
43. Cont.
Alveolar purchase
By Kruger
For removal of anterior teeth or roots
After detaching the labial gingiva the
labial beak is placed under the tissues in
alveolar bone &apply pressure
43
44. Major Motions of forceps
1.Apical pressure: Tooth socket is
expanded by insertion of beaks down
into periodontal ligament.
2. Buccal pressure: produces
expansion of buccal plate and lingual
apical pressure
Lingual pressure: Expands lingual
cortical plate and buccal apical
pressure.
44
45. Cont.
Rotational pressure: Teeth with
single conical roots e.g. Max. incisors
Mand. PM, But the roots should not
be curved.
Tractional force: For delivering tooth
out of socket.
45
46. Procedure for closed extraction:
Requirements for extraction
Adequate access and visibility
Unimpeded pathway of removal
Use of controlled force.
46
47. General steps for closed
extraction
Loosening of soft tissue attachment
from tooth
Done by a Periosteal elevator
Helps to assess anesthesia
Allows extraction forceps to be placed
apically.
47
48. Cont.
Luxation of tooth with a dental
elevator:
A straight elevator is inserted to the
tooth into interdental space.
Strong, slow, forceful, turning of
handle moves tooth in posterior
direction causing expansion of bone
Tearing of periodontal ligament
48
49. Cont.
Excess force can damage or displace
adjacent tooth especially if it has a
large restoration or caries
Adaptation of forceps to tooth:
Tips of forceps beaks should grasp root
Lingual beak is seated first.
Beaks must be parallel to long axis of
tooth
Force should be applied with shoulder &
upper arm & not with wrist.
49
50. Cont.
Sterile drape should be put across
Pt's chest
Before Extraction, PT should
vigorously rinse mouth with antiseptic
mouth rinse.
4X4 inch gauze can be placed in to
back of mouth to prevent teeth or
fragments falling into mouth
50
51. Cont.
Luxation of tooth with forceps:
Major force should be directed towards
thinnest portion of bone.
Slow steady force is used.
Removal of tooth from socket:
Done by tractional force usually given
buccally
51
52. Role of opposite hand
Reflect soft tissues of cheek, lips and
tongue, give visibility.
Protect other teeth from forceps.
Stabilize PT's head
Supporting and stabilizing mand. during
mand. extraction.
Supports alveolar process and provide
tactile information about expansion of
alveolar process.
52
53. Role of assistant
Helps to visualize and gain access, by
reflecting soft tissues and tongue
Suction away blood, saliva, irrigating
solution
Stabilize mandible
53
54. Specific Technique for removal
of Each tooth
Maxillary incisor teeth:
They have conical roots.
LI may have a distal curvature for root.
Alveolar bone is thin over buccal side
and thick over palatal side.
After apical Pre. the force is given
buccally, less palatal force followed by
rotational force, no rotational force if
there is curvature.
Tooth is delivered in labial direction
54
55. Cont.
Maxillary canine
Longest tooth in mouth
Root is oblong in C.S.
Bone on labial aspect is thin. So a
fragment of bone usually fractures from
buccal aspect when tooth is removed.
Buccal, palatal and a small amount of
rotational movement and removed in
labio - incisal direction.
55
56. Cont.
If Bone is detached from periosteum, it
should be removed.
If buccal bone is attached to periosteum,
it can be left, normal healing will occur.
56
57. Cont.
Maxillary I PM
Single rooted with bifurcation to bucco-
lingual roots at apical 1/3
Most common root #
Buccal bone is thinner
Tooth should be luxated as much as
possible.
Apical, buccal, palatal movements,
palatal should be less
57
58. Cont.
Maxillary II PM
Single rooted
Thin bone buccally and thick palatally
Buccal, palatal, bucco - occlusal
tractional force.
58
59. Cont.
Maxillary molar
3 roots,2 buccal roots are relatively
closer and palatal is divergent towards
palate.
Buccal cortical plate is thinner than
palatal.
Forceps have projection on buccal beak
to fit buccal bifurcation.
59
60. Cont.
Upper cowhorn forceps is used in teeth
with large caries or restoration.
More buccal force, less palatal force
removed with bucco occlusal tractional
force.
II M similar anatomy except less
divergence for roots and removed in
similar way.
Erupted III M. conical roots
Easily extracted by elevators alone
60
61. Cont.
Mand. ANT. Teeth
Incisor roots are thinner and shorter and
canine roots are longer and heavler.
Bone on labial aspect of canine is
somewhat thicker.
Equal movements labially, lingually &
tooth is luxated by a rotational force &
extracted by labio-incisal tractional force
61
62. Cont.
Mand. PMs
Roots are straight & conical
Bone thinner on buccal & thicker on
lingual aspect.
Buccal, less lingual, rotational and
occluso - buccal tractional force.
If any root curvature rotation is avoided
62
63. Cont.
Mand. Molars
2 roots and widely divergent for IM
Roots may converge at apical 1/3
Most difficult of all teeth to extract.
Apical, buccal, lingual and bucco occlusal
tractional force.
Lingual bone is thinner than buccal so
more lingual pressure
63
64. Cont.
Lower cowhorn forceps is used by
squeezing the bifurcation, buccolingual
movements can also be used.
Erupted mand. III M. Conical roots
lingual plate is thinner, so more
movements are given lingually and
delivered in lingo occlusal direction.
64
65. Modification for extraction of I°
teeth
Similar buccolingual movements
Rotational movement is avoided for
multirooted teeth.
Tooth is delivered in least resistant
path.
If the roots embrace PMT crown,
sectioning of roots should be done
65
66. Post extraction care
If any periapical pathology in
radiograph, and no granuloma
removed with extracted tooth,
periapical area is carefully curetted.
If any debris, calculus, amalgam, tooth
fragment, in socket it is removed with
curette.
Remnants of periodontal ligament &
bleeding bony walls improves healing.
66
67. Cont.
Vigorous curettage delay healing by
causing additional injury
Finger pressure is applied to buccal &
lingual cortical plates to compress the
socket, to prevent bony undercuts
If there is excess granulation tissue
around gingival cuff, it should be
removed with curette or hemostat.
67
68. Cont.
Sharp bony projections should be
smoothed with bone file.
Moistened 2x2 inch gauze is placed
over extraction socket and it should fit
into the space that was previously
occupied by tooth. So that biting force
will give pressure, will cause
hemostasis.
Larger gauze is placed if multiple teeth
extracted of opposing tooth is missing.
68
69. OPEN EXTRACTION
Indications
Failure to remove tooth by closed
method
Unfavourable root pattern
Fracture or caries extending to root
Hypercementosis
Ankylosis
Impacted tooth
Sclerosed bone
69
70. Steps in open extraction
Incision
Raising mucoperiosteal flap
Removal of bone around the tooth or
root
Establishment of point of application
of elevator
Removal of tooth from socket
70
71. Cont.
Trimming the bone
Toileting the wound
Control of bleeding
Repositioning & suturing
Packing
71
72. Planning of an incision
Def.of incision-a cut or wound
deliberately made by an operator in
skin or mucosa using a sharp
instrument, so that the underlying
structures can be exposed for surgical
access.
Incision is placed parallel to
structures without causing damage to
vital structures
72
73. Cont.
Extraoral incisions are planned along
the Langers lines of normal skin
tension or creases, so that min. scar
is formed.
Incision should be placed on sound
bone.
Pen grasp (intraoral) or table knife
(extra oral) grasp is used
73
74. Cont.
Skin or mucosa to be incised to be
stabilized with finger pressure to
guide the passage of blade.
A firm continuous stroke should be
used.
Change in direction is accomplished
by a gradual curve.
74
75. Incisions in oral cavity
Incise through attached gingiva over
a healthy bone.
Incisions placed near teeth for
extractions should be made in
gingival sulcus.
Integrity of interdental papilla should
be maintained.
75
76. Cont.
Incisions involving reflection of
mucoperiosteal flap are direct,
straight-line or curvilinear taking the
shortest distance vertically through
the tissues.
Blood supply to the incision should be
adequate.
76
77. Contraindications for placement
of incisions
Over canine prominence
Vertical incision in mental nerve
region.
Near greater palatine vessels in
palate.
Through incisive papillae.
Over bony lesions
77
79. Types of incisions
Horizontal:-given along the gingival
margin either mesially or distally. e.g.
Internal bevel incision & crevicular
incision.
Vertical:-also called releasing incision
Single vertical incision-triangular flap
Double vertical incisions-trapezoidal flap
79
80. Cont.
Incision should extend beyond
mucogingival line to alveolar mucosa.
Vertical incisions should be placed at
obtuse angle to horizontal incision &
should leave interdental papillae intact
80
81. Cont.
Semilunar (curved,elliptical)
Used to maintain attached gingiva intact
& for endodontic surgery.
Horizontal component rest on bone.
5mm gap is present from base of
gingival sulcus to incision.
81
83. Cont.
Flap tearing:-to prevent this
Incision should be clean,sharp&should
penetrate entire mucoperiosteum.
Flap should be reflected as one unit.
Length of flap should not be more than
twice the width of base.
83
84. Cont.
Flap necrosis:-to prevent this
Base of flap should be wider.
Margins of flap should be either parallel
to each other or converge from base to
apex.
Axial blood supply should be included in
flap e.g.palatal flap based on greater
palatine artery.
84
85. Cont.
Flap dehiscence=separation of flap
margins or gaping of wound.
Causes
Poor tissue handling
Too tight suturing
Hematoma formation
Infection
Prevention
Sutures are placed over healthy bone.
85
88. CONT.
Envelop flap
Most common type
Sulcular incision is made around the
tooth on buccal or lingual aspect
including interdental papillae.
Entire mucoperiosteal flap is
elevated.
Mainly used in surgical extraction of
teeth.
88
89. CONT.
Triangular flap
A vertical releasing incision is made
on one side of envelope flap diverging
towards buccal vestibule.
Vertical incision is made in the
interproximal area not on the facial
aspect of tooth to avoid periodontal
defect.
89
90. CONT.
Flap is reflected towards the base of
the flap.
Rhomboid flap
2 vertical releasing incisions are
made on either side of envelope flap.
Base of flap should be wider.
90
91. CONT.
Semilunar flap
Used in periapical surgery.
Suture line should not be on bony
defect.
91
92. Cont.
Toileting the wound
Irrigation
Debridement of necrotic, foreign
bodies, severely injured tissues.
Antibiotics
Use of medicated mouthwashes after
every food intake.
92
93. Cont.
Hemostasis should be achieved
To minimize blood loss.
Increase visibility
Reduces operating time
Minimizes postsurgical trauma.
93
94. Cont.
it can be achieved by
Intermittent pressure:-with cotton
or gauze sponges. pressure is applied
for 20-30sec for smaller vessels&5-10
min. for larger vessels.
Electrocautery:-for this area around
the vessel is dried thoroughly.Avoid
unnecessary burning.
94
95. Cont.
Suture ligation:-when large vessel
is severed it is grasped with
hemostat. Nonabsorbable suture is
used to ligate the vessel.
Vasoconstrictors:-epinephrine,
thrombin or collagen gel foam
95
96. Cont.
Compression dressing over the
wound:-if there is oozing over a
large area a cotton pad or ribbon
gauze is stabilized over the wound
&secured in position with sutures &
kept for 2-3 days.
96
98. Complications
# of crown or roots of the tooth
being extracted
# of alveolar bone
# of maxillary tuberosity
#of adjacent or opposing tooth
# of mandible
Dislocation of TMJ
98
99. Cont.
Displacement of root into soft tissues,
maxillary antrum
Bleeding
Injury to gums, lips, IAN & its
branches, lingual nerve, tongue, floor
of mouth, greater palatine artery
Dry socket
Osteomyelitis
Infection
99
101. Dry socket or alveolar osteitis
Causes
Undue trauma during extraction
Pre existing infection
Disturbance of clot due to vigorous
mouth wash or curettage
Increased fibrinolytic activity
Localized impaired vascular supply
Smoking
Use of OCP
101
102. CONT.
Clinical features
Continuous throbbing & excruciating pain
h/o extraction 48-72 hrs
Alveolar socket is covered with grayish
necrotic tissues
Denuded alveolar bone
Halitosis
102
103. Cont.
L.A.
Irrigate with warm saline or
chlorhexidine for removal of dead
bone or infected tissues
Do not curette
Obtundant dressing (ZOE with cotton
to cover the denuded bone or
whitehead varnish
Antibiotic, analgesic
103
104. Hematoma
Control bleeding prior to closure
Apply ice extraorally
Antibiotics to prevent infection
Anti inflammatory drugs
104