Oral Surgery Flashcards
(149 cards)
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?
- Mandibular 3rd Molars
- Maxillary 3rd Molars
- Maxillary Canines
Congenitally missing teeth
- Teeth that don’t form
What are the teeth that are most likely to be congenitally missing?
- 3rd molars
- Mandibular 2nd premolar
- Maxillary Laterals
- Maxillary 2nd premolars
What are the different classification systems for impacted teeth?
- Nature of overlying tissue
- Winter’s Classification
- Pell & Gregory Classification
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
- maxillary 1st/2nd molar: Maxillary Sinus
- Maxillary 3rd molar: Infratemporal fossa
- Mandibular 3rd molar: Submandibular space
- Oropharynx=Send to ER for chest & abdominal x-ray
Complications of tooth extraction
- Subperiosteal abscess
- Oro-antral communication
- Alveolar Osteitis
- Nerve Injury
- Tooth Displacement
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