technique surgical anatomy procedure basics perioperative management post operative management
TRANSCRIPT
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Technique
Surgical AnatomyProcedure Basics
Perioperative managementPost operative management
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Mandible
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Applied AnatomyFlap design
Applied Anatomy Flap design
Distal incision –Direct it laterally
Buccal incision-Facial artery and vein
Lingual NerveClose proximity to
mandibular third molars
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Surgical Anatomy Surgical Location
Distal end of body of mandible Embedded between thick buccal alveolar bone and narrow
inner cortical plate. Transverse direction
Applied Anatomy Flap design
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Applied Anatomy
Flap design Distal incision –
Direct it laterally Buccal incision-
Facial artery and vein
Lingual NerveClose proximity to
mandibular third molars
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Surgical Anatomy
Inferior alveolar nerve External Oblique ridge Lingual Alveolus
Lingual pouch Loose connective tissue Tendinous insertion of the temporalis
muscle
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Upper third molar
Location- Tuberosity region Close proximity to maxillary sinus Conical rooted Maxillary molar Tuberosity fracture Infratemporal fossa
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Technique-Basic Procedure Adequate exposure for
accessibility Removal of overlying bone Sectioning of the tooth Delivery of the sectioned tooth
with an elevator Debridement and wound closure
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General differences between bone removal while extracting a root stump vs. impacted tooth
Root stump Impacted tooth
Bone removal Less More
Surgical skills Less More
Nature of bone Less Dense Denser(Mandibular third Molar)
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Lower third molar Surgery
Step1 – Adequate flaps for surgery Incisions Flap Types
Envelop flap Relaxing incision
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Step1 – Adequate flaps for surgery
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Step1 – Adequate flaps for surgery
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Step1 – Adequate flaps for surgery
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Step1 – Adequate flaps for surgery
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Tearing – the most common error
Failure to cleanly elevate the flap
Too much tension and stretching of the flap because the flap is too small for the access needed
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Bone Removal
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Bone Removal
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Step 2- Bone Removal
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Step 2- Bone Removal
Chisel and Mallet Types Use
Strokes are a succession of short, sharp taps sustained by wrist movement
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Sectioning of the tooth
Assess the need for sectioning Direction of sectioning depends on
the angulation of impaction Procedure
Section tooth until ¾of the way towards lingual aspect
Split the tooth using a straight elevator
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Sectioning of the tooth
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Sectioning of the tooth
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Sectioning of the tooth
Elevators Straight elevator #301, #304 Cryer Crane pick
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Sectioning of the tooth
Mesioangular least difficult (Class 1 Position A)
Followed by Horizontal and Vertical impactions
Distoangular is most difficult Lot of distal bone removal Crown is sectioned
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Example of Sectioning-Distoangular Impacted
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Example of Maxillary Third Molar
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Releasing Incision
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Exposure of Maxillary third molar
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Removal of thin Buccal plate
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Application of Elevator
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Application of Elevator
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Follicle removal
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Suturing
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Extracted Maxillary third molar
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Take home points
Use finesse not force Don’t loose your handle Watch the adjoining tooth Deeper Buccal troughing ( Drill at
the expense of the tooth instead of bone) Conserves Bone Avoid proximity to vital structures
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Take home points (contd.) Use purchase point on root
component Use of small or large root picks
depending on the size of the root Inter-radicular bone removal to
gain access to a root Leaving the root tip
Not infected Document it
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Take home points (contd.) Use a good light source No indiscriminate deep drilling in
the socket No surgery without radiographs Take additional radiographs when
in doubt Lingual plate is thin and tooth
fragments can slip in to ‘lingual pouch’
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Perioperative patient management
Patient anxiety control Goals
Achieve a level of patient consciousness that allows the surgeon to work efficiently
Achieved by Long acting anesthetics Nitrous oxide IV sedation
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Perioperative patient management
Pain control (Analgesics) Best achieved before the effect of LA
wears off Doses to be prescribed to last 3-4
days(Beat the pain before it beats you)
Swelling Control Parental corticosteroids Ice packs
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Perioperative patient management
Infection control (Antibiotics) Pre existing pericoronitis Periapical abscess Systemic disease Other
Topical Antibiotic (Tetracycline) Effective in prevention of dry socket
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Trismus
Mild to moderate Resolves in 7 to 10 days If does not resolve -Investigate
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Post operative management
Prevention of complications Give Proper Instructions
Verbal Written
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Post operative complications
Hemorrhage- Controlled by Pressure gauze 15 minutes Placement of gelfoam/sutures Debridement of site with subsequent placement of
gelfoam/sutures Placement of surgicel (oxidized cellulose) Topical thrombin with sutures, Pressure!! Pressure!!! Further work-up may be indicated if above measures
do not achieve adequate hemostasis.
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Factors that Aggravate bleeding(Four S’s)
Negative pressure – Three S’s No Smoking No Sucking (on a straw) No Spitting
No Strenuous exercises
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Control of Pain Pain is expected
Normal PO—3-5 days PO Cessation of pain by 7 days
Severe pain within first 24 hrs—avg. pain tolerable
Most quit taking meds within 4-7 days Direct correlation between
Operating time and resultant pain Pain and trismusAppropriate analgesics
Codeine –Acetamenophen Oxycodone-Acetaminophen etc.
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Dry Socket Pre op regimen for prevention of dry sockets
Antibiotics Chlorhexidine rinses Placement of antibiotics in site of tooth
extraction Copious irrigation (dilution of the pollution)
Occurs 3-5 days PO up to 2-3 weeks Pt. Presents c/o pain (radiates to my ear) malodorous breath foul taste intraorally
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Dry Socket Clinically
No tissue/clot in site of extraction, or appear as non healing site with bone exposed Fibrinolysis, bacterial content of saliva?
Treat with irrigation of site placement of topical dressing, or just placement of plain gauze to cover bony margins
Alvogyl BIPS dressing
Most dressing will contain some form of eugenol, and a carrier medium.
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Post operative diet High calorie, high liquid diet for 12-
24hours Adequate intake of fluids 2L
(Milk, Juices etc.) Soft and cold foods
(ice creams, shakes,smoothies) Multiple extractions
Soft diet for several days Diabetics
Normal diet and insulin ASAP
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Oral Hygiene
On the day of surgery Keep wound clean-heals faster Gentle brushing away from wound
site Avoid disturbing wound site
Next day of Surgery Gentle rinses with warm water Resume oral hygiene methods 3-4
days PO (flossing etc.)
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Other Edema Ecchymosis
Blood ooze submucosally/subcutaneously Common in elderly(decresed tissue tone,
increase capillary fragility, weaker intrcellular attachment)
Onset 2-4 days PO Resolves in 7-10days Warn the patient
Operative notes
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Complications
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Oro Antral Communication
Size <2mm=spontaneous closure 2-6mm=suture over site and sinus
precautions >6mm=closure with flap
Local tissue advancement Palatal rotation BFP
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Incomplete root removal
Occurs when root fragment would require excessive destruction of bone/adjacent structures during removal. Size <5mm Deeply embedded in bone No pathology is associated with root
tip Inform the pt., take radiographs,
follow up.
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Displacement of tooth
Maxillary teeth Displacement into Max. Sinus
Attempt recovery through site Caldwell-Luc
Displacement into infratemporal fossa Cause
Excessive Posterior pressure Single attempt with suction Return to site 2-4 wks PO to allow for fibrosis
Consider leaving in place if asymptomatic
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Have a wonderful weekend!