RPD

While making a maxillary impression. The operator should stand:

Behind the patient (right or left side)

The chemical name for dental stone powder is

Calcium sulfate alpha hemihydrate

Calcination by open kettle method is used in the manufacturing of

Calcium sulfate beta hemihydrate

The chemical name for gypsum is

Calcium sulfate dihydrate

Positive replicas of patients teeth and associated structures are:

Casts

The maxillo mandibular record which permits the least variation in recording is the

Centric Relation

After the clinical and x-ray examination you find a large cavity on tooth #32. Your tx plan includes the extraction for this tooth. After you have extracted this tooth, how would you classify this arch according to Kennedy's classification?

Class 1 Mod 1

What would be your classification (kennedy's) of this arch before tooth #32 was extracted?

Class II mod 2

In Kennedy's classification for partial dentures which class permits no modification

Class IV

The 3 basic types of facial profiles are

Straight Concave Convex

Movement of the base of an entirely tooth-borne partial denture toward the edentulous ridge is prevented by

rests

When time lapse from the initiation of the mix of water and gypsum product, until it hardens is referred to as

setting time

Occlusion rims are utilized in removable partial denture construction to aid in recording inter arch relations. The most critical requirement of an occlusion rim is:

stability

The function of the major connectors are as follows

1, 2, 4 1. Unification of the parts of the removable partial denture prosthesis 2. Aid in distribution of stresses throughout the tissues and teeth in the dental arch 4. Minimization of torque stresses coming upon abutment teeth

The indirect retainer is that component of a removable partial denture that

1,2, 5 -Resists movemnt of the base away from the residual ridge -Provides a third point for accurate orientation of the framework when making the impresion for reling the base -May be omitted in some designs

The base of the cast should be

13 mm thick

The stock tray that is selected to make the impression should clear any tissues at least

4mm

Setting time is controlled by the following

ALL THE ABOVE -Manufacturing process -Mixing -Water-powder ratio -Temperature, retarders, and accelerators

Clasps should be so designed that upon insertion of removal of a partial denture, the reciprocal arms contact the abutment teeth when the retentive arms engage the height of contour in order to

ALL THE ABOVE -Permit insertion and removal w/o applying excessive force -Assure compete seating of the framework -Prevent distortion of the clasps

Decrease vertical dimension of occlusion refers to

An occluding vertical dimension that results in and excessive interocclusal distance when the mandible is in rest position

Occlusion rims are utilized in removable partial denture construction to aid in recording inter-arch relations. The most critical requirement of an occlusal rim is:

Correct wax thickness

The line from the middle of the tragus of the ear to the point representing the infraorbital notch is known as the

Frankfort's horizontal plane

Retention as applied to partial dentures refers to the

Function of the lingual clasp arm to counter-act forces exerted by the buccal clasp arm

The border landmark which is located immediately posterior to the tuberosity is called the

Hamular notch

A maxillary aliginate impression should not be submerged in water because of

Imbibition

If a gel is lacing water in content, absorption of water will occur if it is placed in contact with water, by a process known as

Imbibition

The most frequent cause of premature tooth contact during speaking is

Inadequate interoccusal distance

Freeway space is synonymous with

Inter-occlusal distance

Alginate is a common term for

Irreversible hydrocolloid

Centric relation is a

Mandible-to- skull relationship

A freeway space is located between

Masticatory surfaces of teeth at the rest vertical relation

Centric occlusion

Maximum intercuspation of teeth

The incisal guidance on the articulator is the

Mechanical equivalent of horizontal and vertical overlap

The means by which one part of a partial denture framework opposes the action of the retainer in function is

Reciprocation

Occlusal rest seats for removable partial dentures are prepared primarily to

Resist vertical forces of occlusion

The soft pear shaped tissue located at the posterior end of the mandibular arch is called

Retromolar pad

The 3 basic types of facial forms are

Square Tapering Ovoid

The gel may lose water by evaporation from its surface or by the exudation of fluid by a process known as

Syneresis

Before an accurate face-bow transfer record can be made, it is necessary to determine the:

Terminal hinge axis

When a face-bow transfer is made which includes a third point of reference, which of the following anatomic points may be chosen to provide a definite skull plane for the orientation of casts on the articulator?

The hinge axes of right and left condyles and the lowest point of the bony orbit

The Camper's line is

The line running from the inferior border of the ala of the nose to the superior border of the tragus of the ear

The occlusal vertical dimension is

The maxillomandibular relation in a vertical direction when the teeth are in contact

The retentive tip of a clasp arm is placed in an undercut because a flexible arm is best suited for reciprocation:

The statement is correct but the reason is not

Arbitrary face-bow records are taken from a point 13mm along the

Tragus-outer canthus of the eye line

The facebow is used to

Transfer the relationship of the maxilla to the condlyes to the articulator

The maxillary arch usually exhibits

Two buccal and one labial frena

Shrinkage of the maxillary ridge is usually

Up and backward

The border landmark located anterior to the buccal frenum is called

anterior labial flange area

The functional cusps on the lower first molars are the

buccal

The best way to regulate the time for hardening of gypsum products is to

control the temperature of the gauging water

The impression is usually poured with vibration in order to reduce

entrapped air

The terminal hinge position of the condyles is significant in that it

is accurate and reproducible

The functional cusps on the upper first molars are the

lingual

While making an impression (maxillary) the patient's position is adjusted that

the patient is in an upright position

Distal to the buccal frenum (maxillary arch) you will find a border landmark which is called the

zygomatic process area