Edentulous Anatomy

Question 1

Post palatal seal consists of

Answer 1

• Vibrating line
  
  • Posterior boundary
  • 2 mm away from fovea palatini
  • spans from hamular notch to hamular notch
• Butterfly line
  
  • Anterior boundary
  • color change btw hard and soft
  • Valsal manauever baloons area

Question 2

Coronoid Notch

Answer 2

• Distobuccal area of impression/denture
• Recorded in border molding, left and right movements

Question 3

Pterygomandibular Raphe

Answer 3

• Max
• Connects buccinator and superior pharyngeal constrictor
• Record in border molding by opening wide

Question 4

Mand Labial frenum attaches to

Answer 4

obicularis oris

Question 5

Mand buccal frenum attaches to 2

Answer 5

Obicularis oris

Buccinator

Question 6

Lingual frenum attaches to

Answer 6

genioglossus

Question 7

Labial Vestibule attaches to

Answer 7

Mentalis

Marks inferior border of vestibule

Question 8

Mand Buccal vestibule attaches to

Answer 8

Buccinator

Question 9

Retromolar pad

Marks

Ataches to 4

Answer 9

• Marks distal extension of denture
• Attaches to
  
  • Temporalis
  • Buccinator
  • Superior pharyngeal constrictor
  • Pterygomandibular raphe

Question 10

Masseteric Notch

Refers to

Record by

If not recorded properly

Answer 10

• Refers to distobuccal area
• Masseter contracts when mouth closes against resistance
• Dislodgement of denture of not recorded properly

Question 11

Aleololingual Sulcus

Btw

3 regions

Answer 11

• Btw alveolar ridge and tongue
• Anterior
• Middle
• Posterior

Question 12

Alveololingual Sulcus

Anterior region

spans

flange

Answer 12

• From lingual frenum to premylohyoid fossa
• Sublingual gland sits above mylohyoid muscle so the flange is shorter anteriorly and should touch floor of mouth

Question 13

Alveololingual Sulcus

Middle Region

span

flange

Answer 13

• Span of mylohyoid line- from premylohyoid fossa to distal end of mylohyoid ridge
• Flange is defelcted medially away from mand due to ridge and contraction of mylohyoid medially

Question 14

Alveololingual Sulcus

Posterior Region

Etends into

Flange

Denture extension limited

Answer 14

• Extends into retromylohyoid fossa, denture seats deeper and lingual flange is longer
• Flange is deflected laterally toward the ramus of the mand to form S form of lingual sulcus
• Denture extension is limited by palatoglossus and superior constrictor muscle

Question 15

Buccal Shelf

Perpendicular to

Attaches

Answer 15

• Lies perpendicular to occlusal forces
• Buccinator attaches