INDIRECT RETAINER

Question 1

When the distal extension denture base is dislodged from its basal seat, It tends to rotate around the ___ lines.

Answer 1

fulcrum

Question 2

T/ F

Indirect retainer components should be placed as far as possible from the distal extension base, which provides the best leverage advantage against dislodgement

Answer 2

T

Question 3

T/ F

the nearest canine tooth or the mesioocclusal surface of the first premolar may be the best location for the indirect retention.

Answer 3

T

Question 4

CLASS 1

Answer 4

passes through most posterior abutments

Question 5

CLASS 2

Answer 5

passes diagonally through most posterior teeth on one side and abutment on distal extension side

Question 6

CLASS 3

Answer 6

passes through two principal abutments

Question 7

CLASS 4

Answer 7

passes through two abutments adjacent to the single edentulous space

Question 8

The most commonly used indirect retainer

Answer 8

AUXILIARY OCCLUSAL REST

Question 9

located on an occlusal surface and as far away from
the distal extension base as possible

Answer 9

AUXILIARY OCCLUSAL REST

Question 10

in a Class I arch, this location is usually on the
mesial marginal ridge of the first premolar on each side of the arch

Answer 10

AUXILIARY OCCLUSAL REST

Question 11

in a Class II arch, these are usually placed on the marginal ridge of the first premolar tooth on the opposite side of the arch from the distal extension base

Answer 11

AUXILIARY OCCLUSAL REST

Question 12

used when mesial marginal ridge of the 1st premolar is too close to the fulcrum line or when the teeth are overlapped so that the fulcrum line is not accessible

Answer 12

CANINE REST

Question 13

such a rest may be made more effective by placing the minor connector in the embrasure anterior to the canine

Answer 13

CANINE REST

Question 14

consists of a finger extension from premolar rest to the lingual slope of adjacent canine

Answer 14

CANINE EXTENSION FROM OCCLUSAL REST

Question 15

applied when first premolar is the primary abutment

Answer 15

CANINE EXTENSION FROM OCCLUSAL REST

Question 16

used to effect indirect retention by increasing the
distance of a resisting element from the fulcrum line

Answer 16

CANINE EXTENSION FROM OCCLUSAL REST

Question 17

it is used in conjunction with a terminal rest on the
mesial marginal ridge of the premolar tooth

Answer 17

CANINE EXTENSION FROM OCCLUSAL REST

Question 18

they rest on unprepared lingual surface

Answer 18

CINGULUM BARS (continuous bars) AND LINGUOPLATES

Question 19

the indirected retainers are actually in the form of
auxiliary occlusal rests or canine rests

Answer 19

CINGULUM BARS (continuous bars) AND LINGUOPLATES

Question 20

they indirectly provide indirect retention

Answer 20

CINGULUM BARS (continuous bars) AND LINGUOPLATES

Question 21

T/ F

the occlusal rest on secondary abutment in class II modification 1 serve as an indirect retainer

Answer 21

T

Question 22

T/ F

The primary abutments in a Class II, modification 1 partial denture are the abutment adjacent to the distal extension base and the most distal abutment on the tooth-supported side

Answer 22

T

Question 23

T/ F

If only one tooth is missing in the modification areas, occlusal rest on this side should provide support for the unsupported major connector along with indirect retention

Answer 23

T

Question 24

Rugae area is ____ hence used for indirect retention especially for class I situations

Answer 24

firm

Question 25

it can be used in case of “u” shaped designs

Answer 25

RUGAE SUPPORT

Question 26

less effective than a tooth supported indirect
retainer

Answer 26

RUGAE SUPPORT

Question 27

T/ F

rugae coverage is undesirable if it can be avoided
although palatal coverage may be used to
advantage

Answer 27

T

Question 28

AUXILIARY FUNCTIONS OF INDIRECT RETAINERS

It tends to reduce _____-tilting leverages on the principal abutments.

Answer 28

anteroposterior