RPD PRELIMS Flashcards
materials used for dentures in the old times
ivory, bone, gold, copper, and teeth of animals
branch of surgery or dentistry that deals with the replacement of missing parts with artificial structures
prosthetics
an artificial device to replace or augment a missing body part
prosthesis
what is stability
the quality of a denture to be firm or stable
helps resit horizontal and rotational stresses
what does retention resist
it resist vertical forces, or forces parallel to the path of insertion
if a cast is a positive reproduction of the oral cavity what is an impression?
negative reproduction
bone covered with soft tissue that covers the underlying area of the denture base
residual ridge
undercut is
portion of a tooth located above the gingiv and below the height of contour
a line encircling a tooth designating its greatest circumference at a selected position
height of contour
height of contour is determined by using
dental surveyor
objectives of prosthodontic restoration
elimination of disease, preservation restoration and maintenance of remaining teeth and oral tissues, restoration of oral function, replacement of lost teeth
consideration of oral treatment
comfort, oral function, appearance, health
types of removable partial dentures based on materials used
a. all resin appliance
b. resin with wire clasp
c. resin with casted clasp
types of rpd based on support
tooth supported, tooth-tissue supported
interarch difference
maxillary is lost before mandible
intraarch
posterior is lost before anterior
anatomic consequences of tooth loss are
a. loss of ridge volume due to lack of functional stimulus
b. more boen resorption in the mandible than in the maxilla
c. alveolar bone is replaced with less keratinized tissue
d. changes in facial feature (altered lip support, decrease in vertical height)
what happens when there is different jaw size relationship?
difficult pontic placements
ability to reduce food to a certain size in a given time
masticatory efficiency
4 road diagnostic categories
a. location and extent of edentulous areas
b. condition of the abutments
c. occlusal characteristics and requirements
d. residual ridge characteristics
requirements of an acceptable method of classifying
permit immediate visualization of the partially edentulous arch being considered, permit immediate differentiation between tooth and tooth tissue supported rpd, must be universally acceptable
bilateral edentulous areas located posterior to teh natural remaining teeth
class I
class I and Class II are
distal extensions
what is class II kennedy?
unilateral edentulous space located posterior to the remaining natural teeth
edentulous space with remaining teeth located anterior and posterior to it
class III
class III and IV are?
tooth bound
Single but bilateral edentulous area located anterior to the remaining natural teeth
class IV
t or f classification can be done even before extractions
false
enumerate all the apple gates rules
