Introduction to Removable Partial Dentures

Question 1

what are dental prosthesis

Answer 1

artifical replacement of 1 or more teeth and/or associated structures

Question 2

what are fixed partial dentures

Answer 2

prosthesis replacing teeth in partially dentate arches
- not designed to be removed by the patient

Question 3

what are removable partial dentures

Answer 3

prosthesis replacing teeth in partially dentate arch
- designed to be removed by the patient

Question 4

what is an abutment

Answer 4

tooth used to support prosthesis

Question 5

what is a tooth supported RPD

Answer 5

RPD that depends entirely on natural teeth for support

Question 6

what is a tooth tissue supported RPD

Answer 6

extension base RPD
- RPD supported and retained by teeth at only one end
- denture based is supported by teeth and the residual ridge

Question 7

what are the indications for RPDs

Answer 7

• edentulous area too long or numerous for a fixed pros
• need to restore lost soft and hard alveolar tissue especially in anterior ergion
• reduced periodontal support of remaining teeth
• need to distribute masticatory stresses across the dental arch: cross arch stabilization
• no posterior abutment tooth
• immediate replacement of teeth
• attitiude and desires of patient

Question 8

what are the disadvantages of RPDs

Answer 8

• removable not considered part of patient
• may be lost or borken
• clasps may be visible
• may dislodge during function
• may trap food while eating

Question 9

what is the suprabuldge area

Answer 9

portion of tooth above the height of contour

Question 10

what are prosthetics

Answer 10

art or science of replacing absent body parts

Question 11

what are prosthesis

Answer 11

any artifical part

Question 12

what is prosthodontics

Answer 12

branch of dentistry that pertains to the replacement of missing teeth and oral tissues

Question 13

what are the divisions of prosthodontics

Answer 13

• fixed prosthodontics
  -removable prosthodontics
• maxillofacial prosthetics

Question 14

what is a residual ridge

Answer 14

-residual bone and soft tissue covering that remains after tooth loss

Question 15

what is CR

Answer 15

maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respective disks with the complex in the anterior- superior position against the slope of the articular eminence
- position independent of tooth contact
- position restricted to purely rotational motion

Question 16

what is MIP

Answer 16

• maximal intercuspal position
• position with complete intercuspation of opposing teeth
• independent of condylar position
• previously called centric (habitual) occlusion

Question 17

what is a model

Answer 17

reproduction for demonstration, accuracy not implied

Question 18

what is a cast

Answer 18

an accurate positive reproduction of the maxillary or mandibular arch

Question 19

what is a diagnostic cast

Answer 19

cast for the purpose of diagnosis and treatment planning

Question 20

what is a master cast

Answer 20

replica of teeth, residual ridges, and other parts of the dental arch used to fabricate dental restorations and prosthesis

Question 21

what is the height of contour/survey line

Answer 21

• line encircling a tooth that designates its greatest diameter at a selected position determined by a dental surveyor

Question 22

height of contour will be changed if:

Answer 22

the axial inclincation is changed

Question 23

what is the infrabuldge area and what might it also be referred to as

Answer 23

-portion of tooth below height of contour
- may also be referred to as undercut

Question 24

what is an undercut

Answer 24

surface of object below the height of contour in relation to the path of placement