Indications for tooth extraction?
Caries
Endo:
Perio:
Ortho:
Cracked Teeth
Impacted Teeth
Supernumerary
Pathology:
Questionable Teeth BEFORE Radiation
Contraindications for Tooth Extraction
Poorly Controlled Diabetes
Unstable Angia
ESRD: End Stage Renal Disease
Leukemia
Lymphoma
Hemophelia or Platelet disorder
Hx of Head & Neck Radiation
* HYPERBARIC OXYGEN BEFORE & AFTER EXO
IV Bisphosphonatees
Pericornitis:
* treat infection first
Impacted teeth
Do not erupt when expected
* primary reason=inadequate arch length
What are the most common teeth likely to be impacted?
Congenitally missing teeth
What are the teeth that are most likely to be congenitally missing?
What are the different classification systems for impacted teeth?
Nature of Overlying tissue Classification
Soft tissue Impaction:
* HOC above bone level
* gingiva is completely or partially covering tooth
* Easiest
Hard tissue impaction:
1. Partial bony: HOC below bone level
2. Complete Bony: Tooth entirely surrounded by bone. Most DIFFICULT
Impacted Teeth Classification: Winter’s Classification
3rd molars ONLY
* compare long axis of 3rd molar to 2nd molar
Mandibular: (Mama Has Violet Daises):
Mesioangular: Easiest
Horizontal: 2nd easiest
Vertical: 2nd Hardest
Diatoangular: Most Difficult
Pell and Gregory Classification
lower 3rd molars ONLY
Class A: same plane as other molars
Class B: Halfway down other molars
Class C: Below cervical line (CEJ) of 2nd molar
* MOST DIFFICULT
Class I: crown anterior to ramus
Class II: 1/2 crown in ramus
Class III: Entire crown in ramus
* MOST DIFFICULT
Subperiosteal Abscess
Extraction Complication
* infection under periosteum layer
* small pieces of bone or tooth left under a flap
* irrigate thoroughly to avoid
Can happen whenever you elevate a flap
Oro-Antral Communication (OAC)
Aka Sinus Exposure
* communication b/w oral cavity & antrum (Sinus)
What tooth is most commonly associated with an Oro-antral Communication?
Maxillary 1st molar (palatal root)
Oro-Antral Communication: Tx
< 2mm : Do nothing, Sinus Precautions
2-6 mm: 4A’s and Figure 8 suture
* Antibiotics
* Analgesics
* Antihistamines
* Afrin Nasal Spray 2x per day
> 6 mm: Flap Surgery
How do you prevent an Oroantral Communication (OAC)
Good pre-op radiograph: shows level of sinus
* Avoid excessive apical pressure
Alveolar Osteoitis
AKA Dry Socket
* blood clot dislodges or dissolves before wound heals after extraction
* NOT AN INFECTION, NO ANTIBIOTICS REQUIRED
Alveolar Osteitis: Tx
Irrigate & Local pain control
* PACK ALVEOGEL
* EUGENOL HELPS W/PAIN
Nerve Injury
Most common w/Lower 3rd Molars
* close to IAN Nerve
Tx:
*Medrol Dosepak=Steroid to decrease inflammation
* numbness > 4 weeks, refer for microneurosurgeon eval
Tooth Displacement
Complications of tooth extraction
Bite Block
Better visualization
Stabilizes mandible (good for TMJ)
Suction Tips
Yankaur Suction: soft tissue
Frazier Suction: hard and soft tissue
* Cover hole=hard tissue, more suction
* Uncover: Soft tissue, weaker suction
Towel Clip
holds drapes placed around patient
* Locking handle w/finger & thumb rings
* be careful not to pinch patient’s skin
Austin Tissue Retractor
Austin:
* Right angle
* small flaps