Removal Partial Denture Practice

The minimum temperature required to polymerize heat-curing acrylic resins is

158 degrees F

Designs of a removable partial dentures should initially be drawn on

Preliminary casts

The term suprabulge refers to

An area occlusal or incisal to a survey line

What are the four functional requirements of a removable partial denture clasp?

Retention, reciprocation, bracing, and encirclement

The minimum thickness required for an occlusal rest designed for a removable partial denture should be

1.0 mm

One inch is equal to

25.4 mm

A tuberosity is

An eminence of bone at the end of the maxillary ridge

Resistance to breakage from stretching or pulling is called

Tensile strength

High speed alloy grinders should be

Equipped with dust collection units

One of the purposes of a burn-out of a partial denture mold is to

Expand the mold

A tooth-borne partial denture

Is supported primarily by clasps and rests

What do survey lines indicate?

Height of contour on abutment teeth

The major function of a back-action clasp is to

Counteract the upward movement of a free-end saddle

What type of gold is used in the fabrication of a removable partial denture?

Type IV

When surveying, what is the first tool used in the surveyor?

The analyzing rod

The dislodging force exerted on a clasp tip must be offset by

Reciprocation

Compared to a gold alloy

framework, an chrome-cobalt alloy framework is

Thinner

Responsibility for a partial denture design belongs to the

Dentist

The hamular notch is located

Distal to the maxillary tuberosity

Shrinkage of casting alloys is primarily compensated for by

Expansion of the mold material

Which of the following is used as a base polish for acrylic and metal?

Tripoli

The metal which significantly increases the hardness and strength of gold alloys is

Platinum

Responsibility for surveying the diagnostic cast properly belongs to the

Dentist

One result of burning out a partial denture mold is to

Expand the mold

The tip of the retentive clasp should be

Cervical to the survey line

If the burnout temperature of a mold is too high for a chrome alloy partial framework,

Casting fins may develop

The flexibility of a retentive clasp may be controlled by the

Shape produced by finishing

A retentive clasp arm that is not flexible enough may cause

Tooth movement

An imaginary line drawn through the abutment teeth, around which a

partial would tend to rotate is called

Fulcrum line

The amount of stress that a metal or alloy will withstand before it is permanently deformed is

Yield strength

A circumferential clasp approaches an undercut from the

Occlusal portion of the tooth

The function of the reciprocal clasp arm is to

Counteract any force transmitted by the retentive arm

To prevent tooth movement, a clasp must encircle the tooth to at lease

181 degrees

When undercuts are found in prepared rest seats, the first thing the technician should do is

Block out the undercuts

The part of a removable partial denture that resists dislodging forces exerted on the opposite side of the fulcrum line is the

Indirect retainer

A bar type clasp approaches an undercut from

Below the survey line

How can the laboratory discourage bacterial growth in pumice?

Use a germicidal solution in the pumice

During a laboratory remount of a deflasked denture, what purpose is served by the incisal pin on the articulator?

Maintain the established vertical dimension

Safe operation of the dental lathe requires that the technician

Wear safety glasses

Which of the following hydrocolloid materials is reversible?

Agar