1. Ridge lap design of pontic is indicated for the replacement of a

1. Maxillary 1st molar
2. Maxillary central incisors
3. Mandibular 1st molar
4. Mandibular 2nd premolar

2. The gingival finish line on a tipped molar should be

1. Shoulder
2. Chamfer
3. Knife edge
4. Feather edge

3. Pontic should be

1. Convex buccolingually
2. Convex mesiodistally
3. Convex buccolingually & concave mesiodistally
4. Concave mesiodistally

4. Which of the following statement about pontics is true

1. Posterior pontics should avoid balancing side contacts
2. Should avoid all occlusal contacts
3. Pontics should permit flossing
4. Both A & C

5. To replace a missing canine, the best pontic design is

1. Modified ridge lap
2. Ridge lap
3. Ovoid
4. Sanitary

6. Which of the following is not indicated for maxillary anterior pontic

1. Ridge lap
2. Modified ridge lap
3. Hygiene
4. Ovate

7. Porcelain jacket crown can best tolerate which of the following forces?

1. Compressive forces
2. Shearing forces
3. Tensile forces
4. None of the above

8. The resin bonded bridges have the advantages of

1. Minimum tooth preparation
2. Alignment correction
3. Longevity
4. Long span bridges

9. Porcelain laminate veneers, Maryland Bridge maximally get retention through

1. Composite resin, salinization, acid etching and restoration
2. Composite resin, acid etching, salinization
3. Acid etching, salinization and restoration
4. Composite resin, acid etching and restoration

10. perel pontic is

1. Ovate
2. Conical
3. Hygiene
4. Modified sanitary

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Answers with explanations

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1. B
Ridge lap design pontic is indicated for replacing maxillary anterior teeth. But it’s infrequently used due to unclean able concave surface.

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2. C
When the molars are tipped or rotated, a reverse ¾ Th crown is indicated.

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3. B
The gingival contour of the pontic is usually concave buccolingually and convex in a mesiodistal direction.

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4. D
In FPD, it’s better for posterior pontic to avoid balancing side.

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5.  A
Modified ridge lap pontic combines the best features of the hygiene & saddle pontic designs combining aesthetics with easy cleaning. It is indicated in high aesthetic requirement areas.

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6. C
Sanitary pontics is used when there is excessive bone loss. There should be 3mm space b/w pontic and the ridge so that patient can maintain hygiene. It is usually recommended in mandibular posterior area.

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7. A
Porcelain has high compressive strength but less tensile strength. For this reason porcelains are considered to be brittle.

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8. A
Reduced cost, no anaesthesia needed, minimal tooth reduction, supragingival margins and rebonding possibilities are the advantages of resin bonded bridges.

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9. A
Maryland bridges are called as Etched cast resin retained FPD uses mechanical retention.
Its main advantages are resin to etched metal bond can be stronger than the resin-to etched enamel.
The retainers can be thinner.

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10. D
The gingival surface of modified sanitary is designed to be hyper paraboloid.

The modified sanitary is also called as perel pontic or arc facial FPD

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