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Theme 3. Inlay indications. Clinical and laboratory steps of manufacture. Main and auxiliary materials for inlays manufacture. Physicaland mechanical properties of them.

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1.Male patient 28 year-old is being fabricated inlay for 24 tooth by indirect technique. The cavity for inlay is prepared. Which step is the following?

A. *Taking of impression

B. Inlay modeling

C. Model pouring

D. Casting of inlay

E. Cementation of inlay

 

2.Male patient 26 year-old complains about often drop-out of filling from lower left tooth. Objectively: caries lesion on occlusal-proximal surface of 26 tooth, about 13 of a crown part, without discoloration, percussion is painless, cold temperature reaction is positive, quickly ends after removal of irritant. Which restorative construction is indicated?

A. *Inlay

B. Metal-ceramic crown

C. 1∕2crown

D. ¾ crown

E. Polymer crown

 

3.Metal inlay is fabricated for 37 tooth of male-patient 35 year-old. Cavity locates on occlusal surface of 37 tooth. What is the peculiarity of cavity preparation?

A. *Making of bevel

B. Making of additional cavity

C. Making additional shoulder

D. Widening of cavity bottom

E. Making of flat bottom

 

4.Male patient complains about lesion in a crown part of 26 tooth. Examination reveals caries cavity 1 class by Black. Suggest optimal treatment plan.

A. *Inlay

B. Pivot tooth

C. Cement filling

D. Artificial crown

E. Tooth extraction and fabricating of a bridge denture

 

5.Gold inlay is fabricating for 16 tooth. What percentage of gold is used for casting of gold inlays?

A. *750

B. 500

C. 650

D. 850

E. 900

 

6.Male-patient, 27 year-old, complains about often drop-out of filling from lower right tooth. Objectively: 46 tooth has lesion on occlusal-proximal surface, 1/3 of crown part. Color doesn’t change, cold temperature reaction is positive, quickly ends after removal of irritant. Which restorative construction is indicated?

A. *Inlay

B. ½ crown

C. Combined crown

D. Metal-ceramic crown

E. Polymer crown

 

7.Male-patient, 42 year-old, complains about pain in a side of 36, 37 teeth, which appears when food gets between these teeth. Objectively: teeth formula

17 16 15 14 13 12 11 | 21 22 23 24 25 26 27

47 46 45 44 43 42 41 | 31 32 33 34 35 36 37

1/3 of occlusal surface and distal wall of 36 is restored with filling. Percussion of 36, 37 is painless. Which construction allows to restore lesion of 36 tooth and proximal contact, ruining of which has led to periodontal problem?



A. *Inlay

B. ½ crown

C. Equator crown

D. Full crown

E. Pivot tooth

 

8.Girl of 12 year complains about tooth lesion in frontal area of upper jaw. Dental history: tooth was restored several times, fillings dropped out. Objectively: 12 tooth is restored. Cavity lesion is IV class by Black. Tooth is vital, percussion is painless. Which prosthodontics construction is preferable for such case?

A. *Inlay with pins

B. ½ crown

C. Metal-ceramic crown

D. Porcelain crown

E. Metal crown

9.Ceramic inlay is fabricated for 15 tooth by indirect technique. Dental technician poured casts. What is the following step?

A. *Wax modeling

B. Taking of impression

C. Tooth cavity preparation

D. Change wax on ceramic

E. Investing of wax construction

 

10.Composite inlay is fabricated for 36 tooth by indirect technique. Cavity was prepared and impression was taken. Which is the following step?



A. *Cast pouring

B. Inlay polymerization

C. Wax modeling

D. Change of wax for composite material

E. Composite modeling

 

11.True statement about inlay disadvantages is the following:

A. *Doesn’t enhance tissue resistance

B. Doesn’t restore proximal tooth contact

C. Doesn’t restore occlusal surface

D. Doesn’t restore completely dental tissues

E. Doesn’t wedge tooth cusps

 

12.What is the optimal isthmus width of proximal-occlusal cavity for inlay?

A. *¼ of intercuspal distance

B. ½ of intercuspal distance

C. 1/3 of intercuspal distance

D. 2/3 of intercuspal distance

E. ¾ of intercuspal distance

 

13.Contraindication for inlay manufacture is:

A. *Low level of hygiene

B. Tooth cavity 2 class by Black

C. Tooth cavity 1 class by Black

D. Tooth cavity 5 class by Black

E. Tooth cavity 3 class by Black

 

14.Peculiarities of preparation for inlay are the following:

A. *All above

B. Isthmus

C. Box cavity

D. Canals for pins

E. Bevel

 

15.Which instruments are NOT used for inlay preparation?

A. *Separative disk

B. Round diamond bur

C. Tapered diamond bur

D. Flame-shaped diamond bur

E. Carbide bur

 

16.Dental alloys that are used for inlay manufacture are worked by:

A. *Melting

B. Forging

C. Drawing

D. Swaging

E. Rolling

 

17.The requirements for dental alloys that are used for inlay manufacture are the following ECXEPT:

A. *Maximal shrinkage

B. Biological indifference

C. Anticorrosion resistance

D. High wear resistance

E. Fluidity

 

18.Composite material for inlay manufacture has the following properties ECXEPT:

A. *High fluidity

B. Radiolucency

C. Wear resistance

D. Light curing

E. Plasticity

 

19.Inlays can be manufactured from such materials ECXEPT:

A. *Cements

B. Metals

C. Polymers

D. Ceramers

E. Ceramic

 

20.What is the advantage of composite inlay manufactured by indirect technique in compare with composite filling?

A. *High accuracy of marginal setting

B. Wear resistance

C. Low shrinkage

D. Good color rendering

E. Hypoallergic

 

Theme 4. Pivot teeth indications. Clinical and laboratory steps of pivot teeth manufacture (by Richmond, Katz, Achmedov, Ilyina-Markosyan etc.). Main and auxiliary materials for their manufacture.Physical and mechanical properties of materials.

1.Male-patient 51 year-old complains about tooth defect in the left area of lower jaw. Objectively: crown part of 33 tooth is ruined completely. X-ray: root canal is filled, periodontal tissues are healthy. It was decided to restore this tooth with pivot tooth. What is the appropriate length of cast dowel?

A. *2/3 of root length

B. ¼ of root length

C. 1/3 of root length

D. ½ of root length

E. The whole root length

 

2.Male-patient 29 year-old complains about fracture of 26 tooth. Objectively: dental tissues are hard, radiographically root canal is filled up to apex, tooth walls are above gingiva. Periodontium is without chronic inflammation. Which of the following constructions is appropriate for 26 tooth?

A. *Dowel tooth and crown

B. Pivot tooth with a ring

C. Dowel tooth with inlay

D. Dowel tooth with preventive plate

E. Simple pivot tooth

 

3.Prosthodontist is going to fabricate metal-ceramic crown for 23 tooth after using cast dowel tooth for correction of its position in dental arch. What maximal interference is allowed to change according to the long tooth axis (in °)?

A. *15

B. 4

C. 6-8

D. 10

E. 20-25

 

4.Male-patient 28 year-old complains about discomfort while eating. Anamnesis: tooth ruined due to caries. Objectively: dental walls are hard, percussion is painless, tooth is ruined on the gingiva level. X-ray: root canals are filled up to apex, root is even, periodontal tissues are healthy. Which construction should you choose?

A. *Pivot tooth

B. Veneer

C. Artificial crown

D. Inlay

E. ½ crown

 

5.Female patient 24 year old is being performed pivot tooth by Richmond for restoration of upper central incisor. The cap is fabricated. What is the following step?

A. *Fitting of the cap on the tooth core and post in root canal

B. Fitting of the cap with a post in root canal

C. Soldering of post with the cap

D. Fabricating of combined crown

E. Cementation of construction

 

6.Female patient 28 year old complains about cosmetic defect in the frontal region of upper jaw. Objectively: crown of 13 is flush with the gingiva, dental walls are of sufficient bulk. Tooth core has another color, percussion is painless. X-ray: root canal is direct, wide, filled up to apex. Which dental construction is the most appropriate?

A. *Pivot tooth

B. Polymer crown

C. Metal-ceramic crown

D. Inlay

E. Microdenture

 

7.Female patient 23 year old needs in prosthetics of 11 tooth. Objectively: walls of 11 tooth are of sufficient bulk and flush with the gingiva. Core and post was fabricated and fitted in the tooth. Metal-polymer crown will be fabricated on this tooth. Which polymer is used for facing?

A. *Sinma-M

B. Noracryl

C. Acryloxid

D. Karbodent

E. Protacryl

 

8.Patient needs prosthetics. Objectively: tooth crown is ruined on 2/3, medial and buccal walls are 2 mm above gingiva. X-ray – root canal is filled up to apex. Choose the most appropriate restorative construction.

A. *Dowel crown

B. Inlay

C. ½ crown

D. Equator crown

E. Full crown

 

9.Metal-ceramic crown with cast post-and-core is fabricated for 23 tooth. Objectively: crown part is flush with the gingiva. Root canal is filled up to apex. Such steps were already performed: wax composition of core-and-post fabricated, casting, fitting, cementation, fabricating of impression with gypsum. Which step was done in a wrong way?

A. *Fabricating of impression

B. Fabrication of wax composition

C. Fitting

D. Casting

E. Cementation

 

10.Male-patient, 36 year-old needs prosthetics. Objectively: 25 crown is ruined on 2/3, tooth core is 3 mm above gingiva. X-ray – root canal is filled up to apex. Which construction is indicated for the patient?

A. *Core-and-post

B. Inlay

C. ½ crown

D. Equator crown

E. Full crown

 

11.Male patient 24 year-old. Fracture of 22 tooth. 8 years ago was devitalized. Now the crown part is completely ruined. Which prosthetic appliance should be fabricated?

A. *Pivot tooth

B. Onlay

C. Filling

D. Inlay

E. Swaged crown

 

12.Male-patient 38 year-old is indicated fabricating of cast core-and-post for 13 tooth. Which wax should be used for pattern in direct fabricating?

A. *Lawax

B. Base

C. Modewax

D. Waxolit

E. Formodent

 

13.Male-patient 28 year-old complains about tooth defect in frontal region of upper jaw. Objectively: crown part is ruined below the gingiva level. Root is stable, percussion is painless. Metal-ceramic with cast core-and-post is planned to fabricate. Which auxiliary method of examination is useful to perform in this case?

A. *Radiography

B. EPT

C. Electromyography

D. Gnathodynomometry

E. Masticatiography

 

14.Male patient 45 year-old needs prosthetics. Objectively: crown part is ruined partially. IRTOS is 0,9. Which of the following denture appliances should be chosen?]

A. *Pivot tooth

B. Swaged crown

C. Polymer crown

D. Metal-polymer crown

E. Metal-ceramic crown

 

15.Male-patient 25 year-old needs prosthetics. Objectively: crown part of 13 tooth is ruined on 2/3, tooth core is 2 mm above gingiva. X-ray – root canal is filled to apex. Which construction is indicated for the patient?

A. *Pivot tooth

B. Crown

C. Inlay

D. Equator crown

E. Light-cured filling

 

16.What qualities of wax should be present in wax for core-and-post direct modeling technique? (mark two answers)

A. *Be burnt without ash

B. *Be hard

C. Not paint denture material

D. Be soft

E. Have good adhesion

 

17.Which material can be used for core-and-post modeling? (Mark two answers)

A. *Modeling wax

B. *Autocured polymer

C. Base wax

D. Casting wax

E. Fusible alloy

 

18.Cast core-and-post which will be covered with crown is fabricated for a patient. Root canal is filed to apex, periodontal tissues are healthy. What is the first clinical step?

A. *Tooth preparation

B. Fabricating of impression

C. Root canal preparation

D. Modeling

E. Cementation

 

19.Pivot tooth by Richmond differs from pivot tooth by Achmedov by the following:

A. *Consists of cap with a post and crown with facing

B. Braces the root

C. Prefabricated post is used

D. Consists of crown, post and facing

E. Complete metal crown is fabricated

 

20.Why artificial crown should brace the tooth?

A. *Prevent the tooth from fracture

B. Creates crown retention

C. Creates “post” effect

D. Enhances marginal sitting

E. Preserves the possibility of repair of the restoration

 

Theme 5. Indications for swaged, acrylic and combined (swaged with facings) crowns (crowns by Belkin and Kurilenko V.S.). Clinical and laboratory steps of manufacture.Main and auxiliary materials for their manufacture.Physical and mechanical properties of materials.

1.Wax belongs to a such group of auxiliary materials:

A. *Modeling

B. Impression

C. Forming

D. Isolating

E. Fluxes

 

2.For a swaged crown it is necessary to make metal dies. How many dies and for which purpose they should be made?

A. *One for the initial swaging, one for the final swaging

B. One for the initial swaging, two for the final swaging

C. Two for the initial swaging, one for the final swaging

D. Two for the initial swaging, two for the final swaging

E. Three for the initial swaging, two for the final swaging

 

3.Which wax composition should be used for wax pattern of swaged crown?

A. *“Modewax”

B. Base wax

C. “Waxolit”

D. “Lawax”

E. Sticky wax

 

4.Metal crowns fabricating technologies are those: (mark two answers)

A. *Swaging

B. *Casting

C. Rolling

D. Pulling

E. Pressing

5.What is the width of the metal swaged crown?

A. *0,18-0,2 mm.

B. 0,2-0,25 mm.

C. 0,25-0,3 mm.

D. 0,3-0,35 mm.

E. 0,35-0,4 mm.

 

6.Tooth preparation should be performed without injuring of soft tissues of oral cavity. What from the following is the most dangerous for the soft tissues of patient?

A. *Separating disks

B. Dental stones

C. Millers

D. Shaped heads

E. Burs

 

7.Only alloys are used in dentistry. Why? Choose the fullest answer.

A. *Pure metals don’t require the qualities for the dental constructions

B. Alloys are cheaper

C. Pure metals are insufficiently strong

D. Alloys more stable to corrosion

E. Alloys are easier to deal mechanically

 

8.Metal crowns are fabricated from such alloys, EXCEPT:

A. Gold

B. Copper

C. Titanium

D. Chromium and nickel

E. Chromium and cobalt

 

9.Which metals does fusible alloy consist of?

A. *Silver, copper, bismuth

B. Copper, lead, cobalt

C. Tin, lead, chromium

D. Tin, bismuth, cadmium, lead

E. Lead, tin, molybdenum

 

10.Metal caps should be drown by device of: (mark two answers)

A. *Sharp

B. *Samson

C. Larin

D. Brom-Shtrom

E. Parker

 

11.Percentage of gold that used for dental appliances: (mark two answers)

A. *900

B. *750

C. 960

D. 800

E. 585

 

12.Artificial crown is:

A. *Denture appliance for restoration of anatomic tooth crown

B. Denture appliance for restoration of ruined tooth root

C. Denture appliance for replacing of missing tooth

D. Denture appliance for restoration of tooth stability

E. Nothing from above

 

13.Which chain of procedures for the swaged crown manufacture is correct?

A. *Tooth preparation, impression fabrication, model pouring, cutting of dies, swaging, fitting, bleaching, polishing, cementation

B. Tooth preparation, impression fabrication, cutting of dies, model pouring, swaging, polishing, cementation

C. Impression fabrication, model pouring, cutting of dies, swaging, tooth preparation, cementation, polishing

D. Tooth preparation, model pouring, wax pattern, swaging, polishing, cementation

 

14.How does polymer joint with metal?

A. *Mechanically

B. Homogenously

C. By oxide layer

D. By special glue

E. Chemically

 

15.The width of polymer crown is:

A. *1,5 – 2 mm

B. 0,5 – 1,0 mm

C. 2,0 – 2,5 mm

D. 0,25 – 0,3 mm

E. 1,0 – 1,5 mm

 

16.Technology of polymer crown’s manufacture is:

A. *Polymerization

B. Swaging

C. Rolling

D. Pressing

E. Casting

 

17.Polymer crown for the 12 tooth is fabricated for a patient. Dental technician performed wax pattern. What step is the following?

A. *Replacing wax by polymer

B. Cementation

C. Fitting

D. Impression fabricating

E. Mounting models to occluder

 

18.Crown by Belkin is:

A. *Swaged crown with cut window on vestibular surface to be covered with polymer

B. Cast crown with polymer facing

C. Swaged crown which is soldered with cast top and lock

D. Cast crown with ceramic facing

E. Swaged crown which is soldered with cast retentive elements

19.How many surfaces are cut during preparation for full crown?

А. *5.

B. 4.

C. 3.

D. 1.

E. 2.

 

20.Tooth crown modeling should be held on models which are fixed in central occlusion and:

A. *Mounted in articulator or occluder

B. Mounted in device of Samson

C. Set in parallelometer

D. Set in Brom-Shtrom’s device

E. Set in Parker’s device

 


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Theme 2. Gypsum models pouring. Trimming of model’s base. Devices that imitates mandible motions. Models mounting on an articulator. | Theme 6. Technology of cast, metal-ceramic and metal-composite crowns manufacture. Properties of main and auxiliary materials which are used for their manufacture.
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