Foc Quiz 4/27 Resin Bonded FDP

Question 1

RBFP:

Answer 1

Resin Bonded Fixed Prosthesis

Question 2

RBFP is aka:

Answer 2

Maryland Bridge

Question 3

Adv of RBFP:

Answer 3

min tooth removal, esp for abutment teeth (intact & caries free) , red chance of pulp exposure, no anesthesia needed, supragingival prep, easy impression making, no need for interim, red chair time, red pt cost, rebonding possible

Question 4

1’ goal of RBFP:

Answer 4

replace missing teeth w max tooth conservation

Question 5

Type of bonding Maryland bridges use:

Answer 5

Micromechanical bonding

Question 6

Alternative if pt w Maryland bridge doesn’t work:

Answer 6

conventional FDP or implant supported prosth

Question 7

These are found on either side of the Maryland bridge:

Answer 7

metal wings

Question 8

Disadv of RBFP:

Answer 8

Red longevity (50% in 10y), enamle mods, space correction difficult, good alignment of abutment teeth is req, esthetic compromised on pos teeth

Question 9

% red in longevity, RBFP in 10yr:

Answer 9

50%

Question 10

When is it difficult to get esthetic result from RMSP?

Answer 10

when pontic space is greater or less than the dimension of a normal tooth

Question 11

RMFP indications:

Answer 11

Replace missing anteriors, prosth splinting of perio involved teeth, single pos tooth replacement

Question 12

Contraindications< RMSP:

Answer 12

Long span, lots of restos or damaged teeth, poor enamel quality, short cx crown, bruxism, metal alloy allergy, deep vertical overlap, sig pontic width discrepancy

Question 13

Diseases that lead to poor enamel quality:

Answer 13

hypoplasia, emaalogenesis iimperfecta

Question 14

1’ consideration for making RBFP:

Answer 14

cover as much enamel surface as possible while keeping occlusion, esthetics, or perio health in tact

Question 15

Design aspect that helps resist occlusal forces and provide broader area for bonding:

Answer 15

“Interproximal wrap around”

Question 16

When can we allow the RBDP have some F-L displacement?

Answer 16

never

Question 17

When to define a distinct gingival margin for RBFP?

Answer 17

whenever possible

Question 18

6 options for modifications to the anterior design:

Answer 18

proximal wrap-around, gingival margin, incisal margin, cingulum rest, proximal guide plate, proximal grooves

Question 19

___mm clearance in intercuspal position lateral and protrusive excursion for anterior abutments for RBFP:

Answer 19

0.6- 1mm

Question 20

How much can you reduce the lingual HOC for anterior abutment prep for RBFP?

Answer 20

0.3-0.4mm on cingulum wall

Question 21

Where in relation to CEJ, margin?

Answer 21

1mm supragingival and not past the CEJ

Question 22

Margin bur for anterior abutment prep, RBFP:

Answer 22

Knife edge or light chamfer in ENAMEL

Question 23

How to avoid darkening effect of anterior teeth after cementation?

Answer 23

1mm below the incisal edge

Question 24

Bur to make cingulum rest:

Answer 24

inverted cone

Question 25

Depth and length of cingulum rest seat, RBFP:

Answer 25

0.5mm deep, 2-3mm long, finish line as far L wo compromising esthetics

Question 26

Anterior abutment prep, RBFP, proximal grobes or no?

Answer 26

yes

Question 27

Bur to make prox grooves:

Answer 27

tapered fissure bur, o.5mm depth, parallel to poi