Oral surgery Flashcards
When do we see radiographic bull’s-eye appearance?
Lingually placed mandibular third molar
Which nerves may get damaged during wisdom tooth extraction
Lingual nerve
Possible complication in patients with liver disease post tooth extraction
Bleeding
Blurred and narrow, inferior alveolar nerve canal suggests
Roots perforated by canal
In which space is the distal root of the third molar more likely to be displaced in
Submandibular
Commonest complication after mandibular third molar extraction
Dry socket
Where is pressure first applied during tooth extraction
Apical
Which teeth extraction require rotation force primarily
Maxillary, central incisor, and mandibular second premolar
Where is the root tip most likely to be found during extraction of maxillary third molar if it is missing
Infra temporal space
When is the best time to prescribe analgesia in extraction?
Before the anesthesia wears off
Which extraction is most difficult in maxillary arch
First premolar
Best time for extraction during pregnancy
Second trimester
Purpose of nitrogen gas in anesthetic cartridge
To prevent deterioration of vasoconstrictor
Which technique should be used when the patient cannot open mouth for anesthesia in alveolar nerve block?
Akinosi technique
Which vasoconstrictor is specifically contraindicated during pregnancy
Felypressin
Dumbbell appearance during third molar nerve block is mainly due to
Injection in internal maxillary artery
Preferred method of anesthesia in hemophiliacs
Intraligamental
Maximum recommended dose of epinephrine with lignocaine
7 mg/kg
Trismus during block anesthesia is a result of damage to which muscle
Medial pterygoid
Which anesthetic is not affected by pH?
Benzocain
Which size of root can be left in the alveolus?
4-5 mm
What is the maximum size of the gap between fractures for there to be direct healing?
< 0.3 mm
Fracture involving skin lesion is classified as
Open or compound fracture
Fracture involving damage to nerves is classified as
Complex fracture
Fracture involving bone, splitting into multiple pieces is classified as
Comminuted fracture
Which muscles are affected in bucket handle fracture of mandible
Digastric and mylohyoid
Optimal length of screw in mini plate fixation is
7 mm
Minimum acceptable value for Hkt before oral surgery is
30%
Who and what is affected in garre’s osteomyelitis?
Children
Mandible
When does TMJ development begin?
10 weeks
First step in a patient with ludwig’s angina?
Intubation/Tracheostomy to secure airways
