Re: PROSTh questions

[Guest guest]

HI MOKAAMR, i have tried answering them.i am not sure of a few.i have answered next to your questions in red as they dint have numbers and i dint want you to get confused.please let me know my corrections . From: "Mokaamr@..." <mokaamr@...> To:

Ore < > Sent: Wednesday, 18 July 2012, 11:29 Subject: PROSTh questions

Pls help with the following questions.

Which of the following structures affects the

thickness of the flange of a maxillary complete

denture?

A. Malar process.

B. Coronoid process.THIS ONE

C. Mylohyoid ridge.

D. Zygomatic process.

E. Genial tubercle.

During the fabrication of new complete dentures,

which of the following can be modified to achieve

the desired occlusion?

1. The compensating curve.

2. The orientation of the occlusal plane.

3. The cusp inclination.

4. The condylar inclination.

to the ridge and

excessive anterior vertical overlap.

A. (1) (2) (3)

B. (1) and (3):NOT SURE ABOUT THIS

C. (2) and (4)

D. (4) only

E. All of the above.

A patient with complete dentures complains of

clicking. The most common causes are

A. reduced vertical dimension and

improperly balanced occlusion.

B. excessive vertical dimension and poor

retention.:THIS ONE

C. use of too large a posterior tooth and too

little horizontal overlap.

D. improper relation of teeth

A maxillary complete denture exhibits more

retention and stability than a mandibular one

because it

1. covers a greater area.

2. incorporates a posterior palatal seal.

3. is not subject to as much muscular

displacement.

4. is completely surrounded by soft tissue.

A. (1) (2) (3)

B. (1) and (3)

C. (2) and (4)

D. (4) only

E. All of the above.THIS ONE(not sure with this and A)

In patients wearing complete dentures, the most

frequent cause of tooth contact (clicking) during

speaking is

A. nervous tension.

B. incorrect centric relation position.

C. excessive occlusal vertical dimension.:THIS ONE

D. lack of vertical overlap.

E. unbalanced occlusion.

To improve denture stability, mandibular molar

teeth should normally be placed

A. over the crest of the mandibular ridge.:NOT SURE MAY BE THIS

B. buccal to the crest of the mandibular

ridge.

C. over the buccal shelf area.

D. lingual to the crest of the mandibular

ridge.

A patient wearing complete dentures complains of

tingling and numbness in the lower lip bilaterally.

This is often an indication of

A. allergy to denture base material.

B. impingement of denture on mandibular

nerve.

C. defective occlusal contacts.

D. impingement of denture upon mental

nerve.THIS ONE

E. neoplastic invasion of the inferior

mandibular nerve.

Following the insertion of complete dentures,

a generalized soreness over the entire

mandibular alveolar ridge can be caused by

A. Inadequate interocclusal distance.:THIS ONE

B. impingement on the buccal frenum.

C. high muscle attachments.

D. excess border thickness.

In an edentulous maxilla, the direction of

resorption of the alveolar ridge is

A. upward and palatally.:THIS ONE

B. upward and facially.

C. uniform in all directions.

D. upward only.

Upon examination of an edentulous patient, it

is observed that the tuberosities contact the

retromolar pads at the correct occlusal vertical

dimension. The treatment of choice is to

A. reduce the retromolar pads surgically

to provide the necessary clearance.

B. reduce the tuberosities surgically to

provide the necessary clearance.

C. construct new dentures at an

increased occlusal vertical dimension

to gain the necessary clearance.

D. proceed with construction of the

denture and reduce the posterior

extension of the mandibular denture

to eliminate interferences.

Vestibuloplasty is a preprosthetic surgical

procedure used to

A. facilitate reliable impression making.

B. provide adequate posterior inter-arch

space.

C. allow placement of teeth over the

residual ridge.

D. increase the supporting surface area:THIS ONE

In complete dentures, the external oblique line

is used as a guide for the

A. position of the posterior teeth.

B. height of the occlusal plane.

C. termination of the buccal flange.THIS ONE

D. termination of the lingual flange.

Extreme resorption of an edentulous mandible

can bring the alveolar ridge to the level of the

attachment of the

A. buccinator, styloglossus and

geniohyoid muscles.

B. mylohyoid, buccinator and

styloglossus muscles.

C. superior constrictor, mylohyoid and

buccinator muscles.

D. mylohyoid, buccinator and

genioglossus muscles.:THIS ONE

CLICKING OF DENTURE

a.increased OVD:THIS ONE

Decreased OVD

Thx