Management Of Wisdom Teeth Flashcards
Lower hired molar is sandwiched between
Thick buccal cortex (and external oblique ridge) and thin lingual cortex
Relationship of the IDN to the mandibular third molar
IDN bundle is below/alongside/in contact with roots of lower third molars
What artery runs in close proximity to lower border of the mandible near 2nd molar
Facial artery
Upper third molar is sandwiched between
Thin buccal cortex and thicker palatal bone
What are the winter’s lines
White, amber, red lines
White line — occlusal plane
Amber line — ascending ramus and bone
Red line — perpendicular from amber line until point of elevation
If >5mm, recommend doing under GA
Pell Gregory classification predicts
Difficulty of extracting impacted lower third molars based on molar;s spatial relationship to occlusal plane and ascending ramus
Pell Gregory classification
A: occlusal plane same level as 2nd molar
B: between occlusal plane and cervical line
C: below cervical line
1: sufficient space between distal part of 2nd molar and ramus to accommodate md diameter of third molar
2:
Complications of wisdom tooth
Infection Caries Resorption of impacted tooth Cyst formation Odontogenic tumours
CRICO
Local causes of abnormal wisdom teeth
Abnormal position of tooth germ
Lack of space
Supernumerary teeth
Cysts
Tumours
Contraindications for excision of third molar
Extremes of age
Compromised medical conditions
Potential damage to adjacent structures
Erupted into function
Buried, not going to erupt
Indications for excision of impacted lower third molar
Pericoronitis
Caries
Periodontal disease
Ortho
Pathology
Prophylaxis
Jaw fracture
Factors to consider for wisdom tooth extraction
Type, depth, angle of impaction
Root morphology of second and third molar
Presence of first molar
Position of inferior dental canal
Bone density
