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NBDE part 2- Prosthodontics Exam Questions And 100% Correct Answers
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NBDE part 2- Prosthodontics Exam Questions And100% Correct Answers
Distobuccal and distolingual extension of mandibular custom tray corresponds with
position and action of - ANSWER masseter
buccal vestibule area corresponds with - ANSWER buccinator muscle
provides best support
BUCCAL SHELF
Lingual frenum area of corresponds with - ANSWER genioglossus muscle- influences
length of flange during normal movements of tongue
Mandibular anterior labial area corresponds with - ANSWER mentalis.
elevates mandibular anterior labial area unless this border is established by accurate
border molding
Mucolabial fold
labial frenum corresponds with - ANSWER orbicularis oris
Retromylohyoid area is limited posteriorly by the action of ______________ and inferiorly
by ____________________ - ANSWER Palatoglossus
Lingual slip of superior constrictor
Lingual border of mandibular impression is influenced by - ANSWER palatoglossus,
superior pharyngeal constrictor, mylohyoid, genioglossus
Why do we extend the mandibular denture to the retromolard pad area? - ANSWER
Basal bone under the retromolar pad is resistant to resorption and if extension is short
of retromolar pad, marked ridge resorption with occur
, Contraindication of reline - ANSWER excessive overclosure of vertical dimension- large
decrease in vertical dimension
Whistling can result if. - ANSWER Vertical overlap is not enough
Horizontal overlap is too much
area palatal to incisors is improperly contoured-too high/too narrow
Support vs. stability vs. retention of denture - ANSWER support: resistance to vertical
seating forces
stability: necessary to resist dislodgement of a denture in the horizontal direction
retention: ability of denture to withstand dislodging forces in vertical plane
Custom tray should be __mm short of mucosal reflecetion and frenum/vestibule -
ANSWER 2
Primary support areas of maxillary CD - ANSWER residual ridges (maxilla and palatine
bone)
Secondary support areas of maxillary CD - ANSWER palatal rugae (raised areas of
dense CT in the anterior 1/3 of palate). Resists anterior displacement
Primary support for mandibular CD - ANSWER buccal shelf
risidual ridges IF large and broad
secondary peripheral seal area of mandibular CD - ANSWER anterior lingual border- if
knife edged, you need maximal extension of denture to help distribute the forces of
occlusion over a large area
Most important factor for providing retention for CD - ANSWER Peripheral seal
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