mcqs, 1-20

Secondary dentin is formed by cells located at the border with pulp, called:

a) dentinal cells

b) pulp cells

c) odontoblasts

d) odontoplasts

c) odontoblasts

Temporary teeth begin to erupt:

a) from the sixth month

b) for one year

c) at the age of six

d) after the birth of the child

a) from the sixth month

The equator of the permanent lower first small molar on the lingual side is designed:

a) low down to the neck of the tooth

b) in the middle of the lingual surface

c) 2/3 of the neck of the tooth

d) near the chewing surface

d) near the chewing surface

In dental articulation, the ratio between the joint surfaces c mandibular joint and teeth in the oral cavity:

a) is constantly changing

b) the ratios remain unchanged

c) there is a change only in the joint surfaces

d) there is a change between the teeth in the oral cavity

a) is constantly changing

5. What percentage are the "A" contacts in central occlusion:

a) 22%

b) 34%

c) 44%

d) 100%

b) 34%

6. According to the occlusal scheme according to Filchev, what is the distribution of contacts in central occlusion:

a) evenly

b) balanced

c) harmoniously

d) unevenly

d) unevenly

How many degrees is Bennett's angle when the joint head of the working side mainly rotates:

a) about 1 ÷ 2

b) 3 ÷ 4

c) about 6

d) 15 ÷ 17

d) 15 ÷ 17

According to Boyanov, occluders are used in the production of:

a) larger prosthetic structures

b) for all types of prostheses

c) mainly for whole prostheses

d) single crowns and small bridges

d) single crowns and small bridges

When there is no pronounced preparation limit, the crown edge enters gingival sulcus:

a) 0.3 - 0.5 mm

b) 0.5 - 0.7 mm

c) 1 mm

d) does not enter the gingival sulcus

a) 0.3 - 0.5 mm

The operating arm of the hooks on Kemeni has:

a) profile G

b) T-shaped profile

c) the profile depends on which tooth it is constructed on

d) circular profile

b) T-shaped profile

In distally unilaterally unrestricted defects treated with removable model - cast prostheses applies the principle of:

a) transfer support

b) two-line support

c) a quadrangular, polygonal reference field

d) triangular reference field

d) triangular reference field

Temporary splints are designed to immobilize the dentition or part from him:

(a) while undergoing medical or surgical treatment

b) after treatment

c) when there is no recovery period

d) as a permanent means of treatment of the infested periodontium

(a) while undergoing medical or surgical treatment

The ratio of the anatomical crown to the root for frontal teeth in healthy periodontium and intact dental crowns is:

a) 1: 1

b) 1: 2

c) 3: 4

(d) all listed ratios

b) 1: 2

The enamel edge in the cervical third of the temporary teeth is:

a) concave

b) convex

c) equal

d) not expressed

b) convex

Aesthetic segment 1 consists of:

(a) the four upper cutters

b) incisors and both canines

c) all teeth that are visible when smiling are involved

d) the two middle upper incisors

d) the two middle upper incisors

In central occlusion the most important role is played by the main tubercles:

The lingual tubercles of the upper teeth and the vestibular tubercles of the lower ones teeth.

The strength of the vote is:

In direct proportion to the pressure of the air jet and amplitude of vibration of the vocal cords

The phonography is:

Graphic method in which the sounds are converted and converted by a special technique depicted on graph paper as phonographic recordings - phonograms

List the requirements for the construction of bridge prostheses with one-way (console) connection:

The medio-distal size of the bridge body should be smaller than that of the supporting one crown; Strong reduction of the occlusal surface; tight contact in the point of contact with the adjacent tooth; the cantilever body is located medially by bearing teeth.

The second laboratory stage for removable partial dentures includes:

Making a plaster model; laboratory planning and delineation of construction; for plastic prostheses - making hooks and wax templates, and for model-cast prostheses - making the metal skeleton.

In dental articulation, the ratio between the joint surfaces in mandibular joint and teeth in the oral cavity:

a) is constantly changing

b) the ratios remain unchanged

c) there is a change only in the joint surfaces

d) there is a change between the teeth in the oral cavity

a) is constantly changing

How many degrees is Bennett's angle when the joint head of the working side mainly rotates:

a) about 1 ÷ 2

b) 3 ÷ 4

c) about 6

d) 15 ÷ 17

d) 15 ÷ 17

At what distance from the mid incisal point is located the anatomical axis of rotation according to the dimensions of the triangle of Bonneville:

a) 8.5 cm

b) 11 cm

c) 11.5 cm

d) 9.5 cm

a) 8.5 cm

The first layer to be applied in light-curing laboratories composite composites is called:

a) opaque

b) oxide layer

c) sealant

d) bond

a) opaque

The camper line (plane) connects:

a) the two buds

b) the external auditory canal and the orbital point

c) ear tragus with the wing of the nose (alare point)

d) the sub-hall and stomion points

c) ear tragus with the wing of the nose (alare point)

It is formed narrowly between the gingival margin and the tooth surface cleft space, called:

a) crown pocket

b) fissure space

c) tooth pocket

d) periodontium

a) crown pocket

Which of the following bridge fasteners are not applied as single crowns:

a) private crowns

b) SOCH - fasteners

c) sheath crowns

d) pin crowns

b) SOCH - fasteners

When there is no pronounced preparation limit, the crown edge enters gingival sulcus:

a) 0.3 - 0.5 mm

b) 0.5 - 0.7 mm

c) 1 mm

d) does not enter the gingival sulcus

a) 0.3 - 0.5 mm

The plastic dough is placed in portions in the cuvette whose temperature is:

a) 90 ÷ 100 °

b) 60 ÷ 70 °

c) 40 ÷ 50 °

d) 15 ÷ 20 ° room

d) 15 ÷ 20 ° room

In wax-immersion technique, the gypsum stump can be insulated with a thin layer of lacquer coating to:

a) good occlusal-articulation contacts are achieved

b) provide space for the adhesive cement

c) economy wax

d) obtaining a better connection between the wax and the stump

b) provide space for the adhesive cement

When heating two solids without solder is carried out:

a) autogenous welding

b) monolithic casting

c) model casting

d) a, b, c – answers

a) autogenous welding

The apical third of the disto-vestibular root of the sixth upper tooth is curved:

a) medially

b) distally

c) coincides with the direction of the medio-vestiberal and lingual tubercle

d) it is parallel to the anatomical axis of the tooth

b) distally

The stability of a partial denture is directly proportional to:

a) the length of the reference line

b) the length of the resistance arm

c) the length of the perpendicular

d) the length of the lever arm

b) the length of the resistance arm

Which of the following muscles is not a lower jaw closure:

a) m. temporalis

b) m.masseter

c) m. pterygoideus medialis

d) m.digastricus

d) m.digastricus

Today the shape of the head, face and natural teeth are determined objectively and uncompromisingly on modern quantitative indicators, which we call:

a) aesthetic indicators

b) measure

c) modern standard

d) modern descriptive methods

c) modern standard

. List the physical factors for maintaining and stabilizing goals Prostheses:

Magnetic field; Adhesion and cohesion; Capillary; Atmospheric pressure.

The sonography is:

Acoustic method. Highly accurate modern method for detailed analysis of speech

In central occlusion the most important role is played by the main tubercles:

The lingual tubercles of the upper teeth and the vestibular tubercles of the lower ones teeth.

List the most characteristic features of the sheath metal crown on wax cap:

Single casting; is performed in one laboratory stage.

List the physiological bites:

central occlusion, straight bite, orthognathic bite, progenic bite

What is the value of the physiological mobility of the tooth?

a) 0.1 ÷ 1.5 mm

b) 0.5 ÷ 1.0 mm

c) 0.10 ÷ 0.15 mm

d) 0.010 ÷ 0.015 mm

c) 0.10 ÷ 0.15 mm

Up to how many years is the temporary dentition functionally complete?

a) 5 ÷ 6

b) 7 ÷ 8

c) 10 ÷ 12

d) until the first extraction of a temporary tooth

a) 5 ÷ 6

Steel wire is used to bend wire hooks for front teeth:

a) 0.4 mm

b) 0.4 ÷ 0.6 mm

c) 0.5 ÷ 0.8 mm

d) 0.8 ÷ 0.9 mm

b) 0.4 ÷ 0.6 mm

When expressing the sagittal compensatory curve, the cutting edges on the lower incisors and canines are:

(a) above the horizontal

(b) below the horizontal plane

(c) flush with the horizontal plane

d) flush with the small molars

(b) below the horizontal plane

The threshers have the following diameters:

a) 0.35; 0.65; 0.85 mm

b) 0.40; 0.70; 0.80 mm

c) 0.75; 0.80; 0.90 mm

d) 0.25; 0.50; 0.75 mm

d) 0.25; 0.50; 0.75 mm

What is the thickness of the wax coating to be obtained after a single immersion of the tooth stump (in immersion technique):

a) 0.3 ÷ 0.5 mm

b) 0.6 ÷ 0.7 mm

c) 1.0 ÷ 1.5 mm

d) 0.8 ÷ 0.9 mm

a) 0.3 ÷ 0.5 mm

In the compressed areas of the entire periodontium, mechanical stress develops is called:

a) periodontal pressure

b) occlusal pressure

c) specific resistance force

d) degree of periodontal exposure

a) periodontal pressure

Write the chewing coefficients of the teeth according to Boyanov

35633311 | 12345678

87654321 | 21333652

Today the shape of the head, face and natural teeth are determined objectively and uncompromisingly on modern quantitative indicators, which we call:

a) aesthetic indicators

b) measure

c) modern standard

d) modern descriptive method

c) modern standard

Dental atrium affects:

a) enamel

b) enamel and dentin

c) dentin

d) enamel, dentin and cement

a) enamel

Intraoral registration of the angle of condylar guidance is achieved by the method of:

a) Bonville

b) Christensen

c) Patterson - Katz

d) Gerber

b) Christensen

When casting a two-layer gypsum model, the impression is filled with hard plaster:

a) 10 mm above the neck

b) about 5 mm above the neck

c) 15 mm from the neck

d) fill the whole to the brim

b) about 5 mm above the neck

When filing for partial crowns of front teeth, the cutting edge is cut levels and files with a slope of:

a) 30 °, lingual inclination to the longitudinal tooth axis

b) 45 °, lingual inclination to the longitudinal tooth axis

c) 25 °, lingual inclination to the longitudinal tooth axis

d) there is no fixed degree

b) 45 °, lingual inclination to the longitudinal tooth axis

Ceromers consist of:

a) polymer and monomer

b) organic matrix and polymer

c) only from inorganic fillers

d) organic matrix, polymer and inorganic filler - ceramic and glass-ceramic particles.

d) organic matrix, polymer and inorganic filler - ceramic and glass-ceramic particles.

In the manufacture of metal-ceramic blend crown filing is performs:

a) without a threshold preparation limit

b) only with a threshold preparation limit

c) preparatory threshold or combined

d) not sanded

c) preparatory threshold or combined

List the theories of tooth eruption:

Root theory; Pulp theory; Influence of masticatory function; Hormonal kinetic theory; Influence of hydrostatic influence

The force that develops during normal physiological chewing activity is called……..and its average value amounts to……

The force that develops during normal physiological chewing activity is called masticatory muscle strength (Pm) and its average value amounts to about 30% of absolute muscle strength.

Describe the phenomenon of Christensen:

When the lower jaw moves strongly forward between the two wax shafts forms an angle open backwards, which is equal to the angle of the condylar guide

What are the vents when casting metal constructions

Thin round wax cords with a diameter of 0.7-0.9 mm; They are placed lingually on the crown edge and protrude from the edge of the outflow cone

List the physical factors for maintaining and stabilizing goals prostheses:

Magnetic field; Adhesion and cohesion; Capillary; Atmospheric pressure

With permanent dentition in the upper jaw, incisors and canines, what shape with the cutting edges?

a) part of a circle

b) part of the ellipse

c) straight line

d) strictly individual configuration

a) part of a circle

The stability of a partial denture is directly proportional to:

a) the length of the reference line

b) the length of the resistance arm

c) the length of the perpendicular

d) the length of the lever arm;

b) the length of the resistance arm

Which technological stage is missing in computer machine milling metal crown:

a) stuffing

b) wax modeling

c) adjustment

d) cementation

b) wax modeling

The ordering of teeth for whole Gerber dentures begins with:

a) the upper and lower central incisors

b) centric contacts are sought

c) the upper central and lateral incisors;

d) microcondyloid to microglenoid

c) the upper central and lateral incisors;

The angle of incisive guidance has an average value:

a) 45 ÷ 50 °

b) 35 ÷ 45 °

c) 15 ÷ 17 °

d) 120 °

a) 45 ÷ 50 °

Which of the following muscles is not a mandibular closure:

a) m. temporalis

b) m.masseter

c) m. pterygoideus medialis

d) m.digastricus

d) m.digastricus

In the case of a ridge bite:

a) the front teeth are in edge-to-edge contact and the lateral teeth are in orthognathic ratio

b) the front teeth contact edge to edge and the lateral teeth are displaced distally with one premolar width

c) contact is made only in the last antagonizing pair of teeth;

(d) contact is made only in the area of the small molars.

a) the front teeth are in edge-to-edge contact and the lateral teeth are in orthognathic ratio

When including models in the occluder, what is the distance from the average incisor point and mechanical articulated axis:

a) 8.5 cm.

b) 11 cm.

c) 10.5 cm.

d) there is no strict distance requiremen

b) 11 cm.

Glabella is:

a) the highest point of the skull

b) the root of the nose

c) the most prominent point between the eyebrows

d) the base of the lower edge of the chin

c) the most prominent point between the eyebrows

The most accurate working model can be made by:

a) electroplating

b) by duplication with a refractory mass

c) by means of a thermo-reversible hydropoloid

d) using additive silicones

a) electroplating

The distance between the inner surface of the crown and the sawn tooth stump is:

a) 0.5 ÷ 1 mm

b) 0.05 ÷ 0.1 mm

c) 0.1 ÷ 0.6 mm

d) 1 ÷ 2 mm

c) 0.1 ÷ 0.6 mm

In the system "Adapta" the remote cap is cut into:

a) 0.5 ÷ 1.0 mm

b) 1.0 ÷ 2.0 mm

c) 1 ÷ 1.5 mm

d) there is no strictly fixed distance to cut the remote cap

c) 1 ÷ 1.5 mm

In the manufacture of ceramic crowns, on the polymerized cap roofing ceramic masses are applied, which polymerize:

a) of light and heat

b) hydropneumopolymerization

c) on a water bath

d) under the influence of light

a) of light and heat

The connection between the bridge body and the bridge fasteners shall be made in the occlusal:

a) 1/3

b) 1/2

c) over the entire surface between the bridge body and the bridge support

d) only in the occlusal 1/5.

c) over the entire surface between the bridge body and the bridge support

How many are the original tools for drip-wax technique:

a) 3 pieces

b) 4 pieces

c) 5 pieces

d) the number depends on the desire of the dental technician

c) 5 pieces

List the surfaces of the upper jaw:

orbital facies; infratemporal facies; anterior facies; nasal facies

Define "Symmetry":

Mirror arrangement of identical elements in relation to a certain line (axis) or plane.

What does the name keromer mean and what is their composition:

Ceramic optimized polymer, with composition - organic matrix (polymer) - 15-25% and inorganic fillers (ceramic particles) - 75-85%

Describe the function of kickmiders:

They act similarly to the levers, but resist rotating forces with a tendency to separate the saddle from the prosthetic field.

When repackaging partial dentures without gypsum shaft at opening the cuvette what's left in both halves:

The gypsum model remains in the lower part, and the artificial teeth and hooks in the upper part

What is the ratio between the medio-lingual and the distol-lingual tubercle in the sixth upper tooth?

a) 2/3 for the medio-lingual tubercle

b) 2/3 for the distolingual tubercle

c) 1/3 for the medio-lingual tubercle

d) equally

a) 2/3 for the medio-lingual tubercle

When two bodies are soldered, without soldering is carried out:

a) autogenous welding

b) monolithic casting

c) model casting

d) a) and b)

d) a) and b)

The drain pins are fixed to the ………………………………… ..and floor what angle:

a) 30 °

b) 45 °

c) no matter

d) what is the angle of the outflow cone

b) 45 °

Which support field creates the best conditions for stabilization of the skeletal prosthesis:

a) triangular

b) quadrangular

c) single-line

d) binary

b) quadrangular

Dental articulation is:

a) dynamic process

b) dynamic and various movements are performed

c) active contraction of the maxillofacial muscles

(d) all of the above

(d) all of the above

The apical third of the dysto-vestibular root of the sixth upper tooth is curved:

a) medially

b) distally

c) coincides with the direction of the medio-vestiberal and lingual tubercle

d) it is parallel to the anatomical axis of the tooth

a) medially

Between the incisal and cervical area is located:

a) cervical cervical area

b) the incisal area

c) area with "medium" or "body" shade

d) the most transparent color area

c) area with "medium" or "body" shade

Chewing articulation is subject to:

a) phonetic articulation

b) gnotology and occlusodontia

c) functional atrophy

d) above- threshold irritation

b) gnotology and occlusodontia

To establish the quantitative characteristics of the periodontal Sustainability is a method called:

(a) chewing coefficients

b) electromyomastication

c) gnatodynamometry

d) phonography.

c) gnatodynamometry

After elastication, A-silicones shrink after 48 hours:

a) 0.05%

b) 0.5%

c) 5%

d) 50%

a) 0.05%

The number of casting pins depends on:

(a) the size and shape of the casting

b) from the fixing of the casting pins

c) from the direction of placement of the casting pins

(d) all of the above

(a) the size and shape of the casting

With metal-ceramic crowns with metal occlusal stops the following is achieved:

a) good aesthetic effect

b) good prophylactic effect

c) higher mechanical - strength qualities

(d) all of the above.

(d) all of the above

In SOC - fasteners in the proximal walls, the wax reaches:

(a) open selectively

(b) the wax is 1.5 mm from the contact point

c) as close as possible to the point of contact

(d) is 0.1 mm ÷ 0.5 mm from the contact point

c) as close as possible to the point of contact

In order not to damage the marginal periodontium, the coupling should lies on:

a) 3 ÷ 4 mm below the projection of the vestibular gingival margin

b) 4 ÷ 5 mm below the projection of the vestibular gingival margin

c) 5 ÷ 10 mm below the projection of the vestibular gingival margin

d) there is no exact requirement

d) there is no exact requirement

Hook № 2 according to the system It is recommended:

a) for front teeth

b) for smaller and narrower teeth (premolars)

c) for canines only

d) in all groups of teeth from the upper and lower dentition

b) for smaller and narrower teeth (premolars)

A reference line is called:

The line connecting two occlusal supports (hooks, sliders, telescopes, traverses).

The main tasks in the construction of skeletal model flights prostheses are:

To provide biological periodontal base; Chewing forces to be redistributed to the values acceptable for the available periodontium; To provide stable and traumatic position of the prosthesis during function.

The most important principle in the splinting of teeth with damaged periodontium is:

When a force acts on a single tooth in the splint, it propagates (distributes) and is taken up by all teeth covered in the splint.

List the biophysical methods and means of retention and stabilization of whole dentures:

Inner surface of the poster; Suction chamber; Air chamber; Relief camera; Radiated lines; Prosthetic edges and valve area.

Describe the basic ceramic materials:

One type consists of multiple threads that are harmoniously intertwined in flat, mesh structure filled with light-curing composite; In the other type, the threads are layered on top of each other and form a common bundle wrapped in photocomposite