Prosthodontics Exams and Quizzes Prosthodontics Exams and Quizzes Prosthodontics Exams and Quizzes PDF

Preview

Summary

quiz pontic 5/27/Total pointsThe underlying surface of an anterior pontic should be0/modified ridge lap ridge lap typesaddle typePrimary pontic design for non-appearance zone:1/spheroid hygienicmodified ridge lap ridge lapA term used to describe the circumferential remaining tooth structureabove the...

Description

quiz pontic 5/27/2021 Total points

The underlying surface of an anterior pontic should be 0/1 modified ridge lap ridge lap type saddle type

Primary pontic design for non-appearance zone: 1/1 spheroid hygienic modified ridge lap ridge lap

A term used to describe the circumferential remaining tooth structure above the margin. 1/1 Biologic width Ferrule Fenestration Dehiscence

In order to prevent a tissue lesion under pontics, a surface smoothness coupled with a convex surface buccolingually and mesiodistally in light contact with the residual ridge is what is required. ···/1 statement is true

statement is false

A classification of pontic according to shape wherein it is developed so that the lingual contour maybe in harmony with adjacent teeth. 0/1 ridge lap conical spheroidal shape modified ridge lap

What can be done to minimize the soft tissue irritation that is likely under a pontic? 1/1 Place a highly polished surface or glazed porcelain next to the ridge Design the pontic with minimum tissue contact Design the pontic with convex gingival surfaces design pontic with wide embrasure all of these

The pontic design of choice for maxillary anterior fixed partial denture; 1/1 saddle modified ridge lap hygienic conical

The shape of this pontic is cleansable, but the triangular-shaped spaces around the tissue contact have a tendency to collect debris. 0/1 ridge lap hygienic saddle conical

The purpose of replacing a tooth member is: 1/1 Aesthetic to prevent proximal drift Functional aesthetic and functional

Ideal requirements of pontics 1/1 Smooth surfaced and convex in all directions Easily cleansable Pinpoint pressure free contact on the ridge No irritation to the gingival tissues All are correct

This pontic looks like a tooth, replacing all the contours of the missing tooth, fills the embrasures, and overlaps the ridge with a large concave contact. This type of pontic should never be used. 0/1 ridge lap hygienic saddle conical none of these

In adapting a pontic to the residual ridge, the dentist must maintain a proper biologic and hygienic environment. Therefore, the pontic must NOT 0/1 Be convex mesiodistally be concave faciolingually Touch the residual ridge be concave in two direction

This design gives the illusion of being a tooth but possesses all convex surfaces for ease of cleaning. 1/1 ridge lap hygienic saddle conical

Used to describe a pontic which do not have any contact with the tissue. 1/1 ridge lap hygienic saddle conical none of these

For best results, the occlusion on a pontic should be 1/1 eliminated by adjusting to remove occlusal contact confined to only the buccal portion of the pontic confined to only the lingual portion of the pontic essentially the same as on the other teeth confined to only the area next to strongest abutment.

quiz retraction cord/post and core Regarding tissue retraction around tooth: 0/1 Short duration of retraction of gingival margin during preparation of finishing line. Retraction of gingival margin during taking final impression to take all details of unprepared finish line. Usually retracted severely inflamed gingival margin. Retraction of gingival margin can be done by many ways one of them is retraction cord all ot these

two of these

Single rooted anterior teeth that have endodontic treatment is best treated by: 1/1 Casted post and core. Performed post and composite Performed post and amalgam. Composite post and core

Post fracture decrease with 1/1 prefabricated post ready made post casted post metal post

Single rooted anterior teeth has endodontic treatment is best treated by: 1/1 Casted post and core. Performed post and composite Performed post and amalgam. Composite post and core

The chemicals that are generally used as vasoconstrictors 1/1 Aluminum chloride Alum(aluminum potassium sulfate) Aluminum sulfate Ferric sulfate all of these

What is the chief contraindication for using epinephrine impregnated retraction cord 0/1 It is chemically irritating to the tissue, causing sloughing It produces systemic reactions affecting the cardiovascular system It produces inadequate retraction of the tissues Its size makes it difficult to use where the gingival sulcus is shallow and the tissues firm

A telescopic crown : 0/1 is a mesial half crown is a distal half crown is a modified complete crown made as the coping and the crown. Richmond crown

For root canal treated tooth YOU choose to put post & amalgam this depends on 0/1 remaining coronal structure root divergence presence of wide root other factor

After how many minutes the retraction cord should be removed to avoid bleeding. 1/1 10 minutes 15 minutes 5 minutes 1 hour

Gingival retraction is done 1/1 To temporarily expose the finish margin of a preparation.

To accurately record the finish margin of a portion of uncut tooth surface apical to the margin in the final impression. By various methods but the most common one is the use of retraction cord all of these none of these

Chemico-mechanical tissue retraction provides access primarily by 0/1 displacing the gingival tissue laterally away from the tooth displacing the gingival tissue apically tearing the gingival attachment slightly removing the tissue on the inside of the sulcus chemically shrinking the gingival tissue

It is a troughing technique wherein a portion of the epithelium within the sulcus is removed to expose the finish line. 1/1 Rotary curettage Electrosurgical retraction gingival retraction cords mechanical methods of retraction

Displacement of tissue exposing the gum margin of the preparation maybe done by: 1/1 mechanical direct technique indirect technique

It is placed within the body of the root of a tooth that has already treated with root canal treatment. 1/1 post core

coping

The post diameter shouldn't exceed 1/3 diameter of the root and a minimum of 1 mm of sound dentin should be maintained circumferentially 1/1 statement is true statement is false

It is the part of the restoration that shows out in the mouth that helps anchor a cap or crown 1/1 post core coping

Telescopic crowns are indicated for: 1/1 nonvital teeth cuspids only cases requiring shoulderless preparations broken-down crown

It is mainly used in flared canals, elliptical crossection canals , multiple canal teeth 1/1 Custom post and core Prefabricated both are correct

A root to be accepted for a dowel crown preparation must: 1/1 Be biologically sound Have sufficient strength and enough tooth tissue to the forces of stresses

Have periodontal membrane attachment of sufficient amount All of these None of these

Post fracture decrease with 0/1 prefabricated post ready made post casted post metal post

Prostho 1 midterm exam 2nd sem They are used to make the porcelain opaque that it will mask the metal coping under the porcelain. 1/1 Zirconium oxide Titanium oxide Tin oxide All of the choices

Occlusal contact should never occur at the junction of the porcelain and the metal of the un veneered area because 1/1 Prematurities are hard to detect in this area so adjustments are difficult Contact produces flow or burnishing of the metal leading to fracture of the porcelain Bonding on this area is usually weaker The metal layer is considerably stronger than the porcelain so stress distribution is uneven

The final shape of a tooth produced by instrumentation

1/1 Abutment pontic Emergence profile tooth preparation

Supplements the oral examination by permitting an analysis of occlusion of the patient from the lingual aspect. 1/1 Radiographic examination Transillumination None of the choices Diagnostic casts

What is NOT the requirements of an artificial crown? 1/1 Provide proper occlusal relationship Should protect the tooth against fracture Should last throughout the greater part of the patients life Should protect the tooth from further caries

The preferred finish line for veneer metal restorations: 0/1 chamfer knife edge shoulder acute edge

Displacement of tissue exposing the gum margin of the preparation may be done by: 1/1 mechanical direct technique

indirect technique

The porcelain-metal crown requires what type of labial finish line on the preparation of anterior teeth? 1/1 Knife edge Chamfer Shoulder Shoulder with a bevel The finish line type is not critical if the reduction is sufficient

This is a type of firing or baking a porcelain in which the greatest shrinkage of porcelain is observed, the crown appears granular and it occurs about 100 F below the specified fusing point of the porcelain. 1/1 first firing second firing third firing

It does not contraindicate dentistry but the dentist should know of its history in a patient so that appropriate measures can be taken without delay in the event of a seizure while the patient is in the dental chair. 1/1 Diabetes epilepsy heart disease

How thick must be the metal coping to resist deformation under occlusal pressure? 1/1 0.1-0.3mm 0.3-0.5mm 0.5-0.75mm 0.75-1.1mm

It “acts as a refractory skeleton for the contracting kaolin and feldspar. “Known as strengthener” 1/1 kaolin feldspar aluminum oxide quartz

The following. are ingredients of dental porcelain except 0/1 feldspar quartz silver glasses.

A kind of patient hesitant to receive any kind of treatment is; 1/1 Philosophical Critical Skeptical Geriatric

What will happen if the contact point is placed too high occlusally 1/1 there will be a tendency to have a lifting force on the tooth it will drive the tooth on buccal direction it will cause chronic inflammation all are correct

An element to a good diagnostic workup in preparation for fixed prosthodontic treatment where in you are going to ask if the patient suffers from the frequent occasion of head, neck or shoulder pain’ ···/1

History TMJ/occlusal evaluation Intraoral examination

They are added to increase fluidity of the mixture and to absorb or remove certain objectionable impurities. 1/1 fluxes aluminum oxides kaolin feldspar

Classification of fixed partial denture according to the location except: 0/1 Anterior or labial bridge Posterior bridge Complex bridge Stationary fixed bridge

It is known as strengthener. It imparts stiffness and hardness to the mass during and after firing. 1/1 feldspar kaolin pigments quartz

The abutment for bridgework: 0/1 may not be parallel should have a near parallel relationship with each other maybe tipped mesially maybe tipped distally

Porcelain failure in all-ceramic restoration can be best avoided if the: 0/1 occlusal forces are minimal ceramic materials is not over ½ mm in thickness ceramic material is 1 ½ mm in thickness angles of the preparation are well rounded

The metallic substance that produces blue in color. 1/1 Cobalt salts indium iron oxide chromium tin

It is the heating element containing a platinum wire coil, usually contained within an insulated fire clay shell. 1/1 rheostat with its resistant coil muffle thermocouple and pyrometer

This occurs when complete vitrification of the porcelain has been effected, either in the temperature designated by the manufacturer or at a slightly lower temperature but held for a specified length of time. 1/1 first firing second firing third firing

The layer of porcelain veneer that constitutes most of the restoration and provides the basic shading to the porcelain. 1/1

Opaque layer Body porcelain Incisal porcelain

The shoulderless preparation for a complete porcelain crown is indicated for: 1/1 mandibular incisor only all teeth in the dental arch molars and upper bicuspid with bifurcated roots maxillary laterals, mandibular incisors

The component of feldspathic porcelain that binds the porcelain particles during firing is: 1/1 feldspar kaolin quartz alumina

The metallic substance that produces pink 1/1 indium chromium tin iron oxides cobalt salts

This muscle is felt at the base of the skull high on the neck 1/1 Temporalis Medial pterygoid Sternocleidomastoid Trapezius

Amount of facial reduction for metal-ceramic system: 1/1 0.5-1.0mm 1.2-1.5mm 1.5-2.0mm 1.0-2.0mm

Water temperature starts at 30  C or 86 F = it is at this temperature that the flask is placed in the presser and closed completely and submerge in the water. 1/1 High heat method Low heat method Autopolymerization method All are correct

The most esthetic restoration for duplicating individual anterior teeth in 1/1 Metal/ ceramic crown all of these Plastic jacket crown porcelain jacket crown

One disadvantage of dental porcelain restoration is; 1/1 poor esthetics expansion brittleness radioactivity

An example of an intracoronal restoration EXCEPT 1/1 Onlay inlay

cast core pinledge

Which of the following is true: 0/1 The partial veneer crown may be used on posterior teeth for a fixed bridge attachment Fixed bridges should not be given in children Occlusal disharmony in the natural dentition must be corrected before the placement of the bridge. All are correct

STAGES OF POLYMERIZATION: 1/1 Damp, dough, rubber, sticky, stiff Sticky, damp, dough, rubber, stiff Rubber, sticky, dough, damp, stiff Damp, sticky, dough, rubber, stiff

Proximal half-crown does not cover which of the following tooth surface 1/1 Mesial Distal Buccal Lingual

Low and medium fusing porcelain are made by a special process called 1/1 Bisque baking Devitrification Crystallization Fritting Fusion Option 1

Mechanical methods of gum retraction EXCEPT: 1/1 Copper bands Retraction cords Rubber dams Rotary curettage

An objective of prosthodontic treatment 1/1 Restoration or correction of abnormal oral condition Provide proper proximal contact Should prevent gingival irritation Should protect the tooth against fracture

It is actually a ¾ crown rotated 90 degrees, preserving the distal surface of the tooth while veneering the remaining surfaces. 1/1 7/8 crown Mesial half crown Reverse ¾ crown Porcelain jacket crown

The state of polymer-monomer mixture in packing the mold 1/1 Rubbery doughy sandy Sticky

The layer of porcelain veneer that serves to obscure the metal coping 1/1 Opaque layer Body porcelain

Incisal porcelain

What is the chief advantage of the porcelain jacket crown over the porcelain metal crown 1/1 It is generally more aesthetic It is less expensive It is easier to adjust and re-polish It usually achieves better marginal fit

In the construction of the Tinner’s joint on the lingual surface, the first step is; A triangular piece of the matrix is placed against the labial surface of the amalgam die with the extension of 2 to 3 mm beyond the incisal and 2 to 3 mm beyond the gingival shoulder. 1/1 statement is true statement is false

The amount of occlusal reduction required on the buccal cusp of mandibular molar that is prepared for the reception of porcelain fused to metal crown is: 0/1 1-1.5mm 2-2.5mm 1.5-2mm .75-1mm

Repeated fracture of a porcelain-fused to metal restoration is due primarily to 1/1 occlusal trauma improper firing schedule an inadequately designed framework

failure to use a metal conditioner

This will prevent the shrinkage of porcelain from pulling the platinum matrix away from its original shoulder position. The resulting space then permits the reburnishing of the platinum to the shoulder on the die. 1/1 by painting the platinum shoulder and apron with shellac by melting a thin film of inlay wax in the shoulder. Both is correct none is correct

Overcontoured crowns are most often the result of 0/1 The need for added retention Overbuilding by the technician Insufficient tooth reduction Periodontal consideration

This involves the removal of the enamel on the lingual surface and extended from the top of the cingulum to the lingual margin of the incisal bevel 0/1 incisal cut lingual cut (2nd phase) proximal cut lingual cut (1st phase)

What drug contraindicate hypertensive patient since this drug has a tendency both to increase heart rate and elevate blood pressure. 1/1 Anorectics Antihistamines Epinephrine Amoxicillin

History TMJ/occlusal evaluation Intraoral examination

They are added to increase fluidity of the mixture and to absorb or remove certain objectionable impurities. 1/1 fluxes aluminum oxides kaolin feldspar

Classification of fixed partial denture according to the location except: 0/1 Anterior or labial bridge Posterior bridge Complex bridge Stationary fixed bridge

It is known as strengthener. It imparts stiffness and hardness to the mass during and after firing. 1/1 feldspar kaolin pigments quartz

The abutment for bridgework: 0/1 may not be parallel should have a near parallel relationship with each other maybe tipped mesially maybe tipped distally

Porcelain failure in all-ceramic restoration can be best avoided if the: 0/1 occlusal forces are minimal ceramic materials is not over ½ mm in thickness ceramic material is 1 ½ mm in thickness angles of the preparation are well rounded

The metallic substance that produces blue in color. 1/1 Cobalt salts indium iron oxide chromium tin

It is the heating element containing a platinum wire coil, usually contained within an insulated fire clay shell. 1/1 rheostat with its resistant coil muffle thermocouple and pyrometer

This occurs when complete vitrification of the porcelain has been effected, either in the temperature designated by the manufacturer or at a slightly lower temperature but held for a specified length of time. 1/1 first firing second firing third firing

The layer of porcelain veneer that constitutes most of the restoration and provides the basic shading to the porcelain. 1/1

Opaque layer

Body porcelain Incisal porcelain

The shoulderless preparation for a complete porcelain crown is indicated for: 1/1 mandibular incisor only all teeth in the dental arch molars and upper bicuspid with bifurcated roots maxillary laterals, mandibular incisors

The component of feldspathic porcelain that binds the porcelain particles during firing is: 1/1 feldspar kaolin quartz alumina

The metallic substance that produces pink 1/1 indium chromium tin iron oxides cobalt salts

This muscle is felt at the base of the skull high on the neck 1/1 Temporalis Medial pterygoid Sternocleidomastoid Trapezius

Amount of facial reduction for metal-ceramic system: 1/1 0.5-1.0mm 1.2-1.5mm 1.5-2.0mm 1.0-2.0mm

Water temperature starts at 30  C or 86 F = it is at this temperature that the flask is placed in the presser and closed completely and submerge in the water. 1/1 High heat method

Low heat method Autopolymerization method All are correct

The most esthetic restoration for duplicating individual anterior teeth in 1/1 Metal/ ceramic crown all of these Plastic jacket crown porcelain jacket crown

One disadvantage of dental porcelain restoration is; 1/1 poor esthetics expansion brittleness radioactivity

An example of an intracoronal restoration EXCEPT 1/1 Onlay inlay

cast core pinledge

Which of the following is true: 0/1 The partial veneer crown may be used on posterior teeth for a fixed bridge attachment Fixed bridges should not be given in children Occlusal disharmony in the natural dentiti...