Operative Dentistry I Test

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1 / 60

Role of Zinc Oxide Eugenol:

a. ទាំងអស់ត្រូវ

b. An antimicrobial for temporary filling

c. Protection of pulp against thermal shock

d. Good sealing capability intermediate base for temporary filling

2 / 60

Indication of direct pulp capping:

a. Tooth remaining vital + Absence of history of pain

b. Recent Traumatic ˂ 24hours + The exposure side is less than 1mm

c. Non hemorrhagic or easily controlled + No pulp infection with granuloma or abcess

d. ទាំងអស់ខាងលើ

3 / 60

Diagnosis and Detection of Dental Carie:

a. Detectable explorer and Radiograph

b. Visual and Laser caries detector

c. ទាំងអស់ខាងលើ

d. Fiber Optic Transillumination

4 / 60

នៅក្នុង components of the dental exam, Intra-oral Examination ត្រូវពិនិត្យ:

a. Examination of the teeth + Soft Tissue

b. Examination of the periodontal tissue

c. Radiographs

d. ទាំងអស់ខាងលើ

5 / 60

Definition of indirect pulp capping:

a. It is a procedure in which only the infected dentin caries is removed and the cavity is sealed with a bactericidal agent

b. It is a procedure in which only the infected dentin caries is removed

c. the cavity is sealed with a bactericidal agent

d. ទាំងអស់ខាងលើ

6 / 60

Fluorosis is the appearance of:

a. Translucent white

b. Opacity white

c. Chalky white opaque flecks

d. Dark brown

7 / 60

Dentist most preferable sitting position is :

a. RIGHT REAR POSITION (11 O'CLOCK)

b. RIGHT FRONT POSITION (7 O'CLOCK)

c. DIRECT REAR POSITION (12 O'CLOCK)

d. RIGHT POSITION (9 O 'CLOCK)

8 / 60

Indication of Indirect pulp capping:

a. No evidence of pathosis or caries invaded

b. ទាំងអស់ខាងលើ

c. No pulp exposure + No pain history

d. Clinical signs and symptoms of vitality

9 / 60

Visual methods:

a. Discoloration

b. Detection of white spot

c. Magnification loupes

d. ទាំងអស់ខាងលើ

10 / 60

ចំពោះអ្នកជំងឺអាយុក្រោម8ឆ្នាំ កុំប្រើ Fluoride mouthwash ពីព្រោះ:

a. ទាំងអស់ខាងលើ

b. អាចបណ្តាលអោយមានFluorosis លើធ្មេញដែលដុះបន្តបន្ទាប់

c. មិនបណ្តាលអោយមានFluorosis លើធ្មេញដែលដុះបន្តបន្ទាប់

d. ធ្វើអោយធ្មេញរឹងមាំល្អ

11 / 60

នៅក្នុង components of the dental exam, Extra-oral Examination ត្រូវពិនិត្យ:

a. Face

b. TMJ + Eyes

c. Neck (Lymph node)

d. TMJ + Eyes + Face + Neck (Lymph node)

12 / 60

Dental caries microorganism នៅក្នុងក្រុមទាំងនោះមាន៧ គឺ :

a. ទាំងអស់ខាងលើ

b. Lactobacillus salivarius + Actinomyces naeslundii + Actinomyces viscosus

c. Streptococcus mutan + Streptococcus sobrinus

d. Lactobacillus acidophilus + Lactobacillus oris

13 / 60

Caries-infected dentine ដំណាក់កាលនេះ យើងត្រូវ :

a. ប៉ះពីលើយកតែម្តង

b. ឆាបយកចេញអោយអស់ នៅមុនពេលប៉ះ

c. ទាំងអស់ខាងលើ

d. មិនបាច់ឆាបទេ

14 / 60

Erosion affected area:

a. Only Buccal surface

b. Only occlusal surface

c. Only palatal surface

d. Labial/palatal surfaces maxillary anteriors, occlusal/buccal surfaces of lower molars

15 / 60

Carious process ដែលឆ្លងដល់ Dentine :

a. ទាំងអស់ខាងលើ

b. នៅមាំល្អអត់ងាយបាក់

c. វាអាចបណ្តាលអោយបាក់ដោយឯកឯង

d. វាអាចបណ្តាលអោយបាក់ក្នុងករណី ប៉ះទង្គិចខ្លាំង ឬ ទំងន់នៃការខាំខ្លាំង

16 / 60

Toothwear គឺជាការបាត់បង់ផ្ទៃរបស់ធ្មេញ:

a. ទាំងអស់ខាងលើ

b. តែមួយរយះពេលខ្លី នឹង ដុះមកវិញ

c. ដែលដុះមកវិញនៅពេលក្រោយ

d. ដែលមិនអាចដុះមកវិញបាន

17 / 60

Developmental Conditions including :

a. Enamel Fluorosis

b. ទាំងអស់ខាងលើ

c. Tetracycline Stain

d. Enamel Hypoplasia

18 / 60

នៅក្នុង Dental trauma, enamel-dentin pulp fracture treatment, If young patients with open apices, it is very important to preserve pulp vitality by :

a. Pulp capping

b. ទាំងអស់ខាងលើ

c. This treatment is also treatment of choice in patients with closed apices

d. Partial pulpotomy in order to secure further root development

19 / 60

Class IV, carious lesions on:

a. Proximal surfaces of anterior teeth

b. Proximal surfaces but not including incisal edges of anterior teeth

c. Proximal surfaces including incisal edges of anterior teeth

d. Proximal surfaces of posterior teeth

20 / 60

Materials Used in indirect pulp capping:

a. Calcium Hydroxide

b. ទាំងអស់ខាងលើ

c. Glass ionomer

d. Zinc Oxide Eugenol

21 / 60

ពពួក plaque bacteria មានសមត្ថភាពធ្វើមេតាបូលីស ចំណីអាហារ dietary carbohydrate ជាពិសេស sucrose and glucose បង្កើតអោយទៅជា organic acids នៅលើផ្ទៃរបស់ធ្មេញ ដោយនៅចន្លោះពេលតែ ១→៣ នាទី វាធ្វើអោយ plaque pH ធ្លាក់ចុះដល់ 5.5 នេះហើយគឺជាចំនុចចាប់ផ្តើមនៃ:

a. Oxidation

b. Remineralization

c. ទាំងអស់ខាងលើ

d. Demineralization

22 / 60

Which the following is not a treatment of dental caries?:

a. Extraction

b. Crown

c. Root canal filling

d. Filling

23 / 60

មូលហេតុ Pathological របស់ Toothwear :

a. Erosion +Abrasion + Dental Caries

b. Erosion + Abrasion + Attrition

c. Erosion + Abrasion + Traumatism

d. Erosion + Abrasion + Fluorosis

24 / 60

The most commonly used bases have been:

a. Zinc polycarboxylate

b. Glass-ionomer cements

c. Zinc oxide eugenol and zinc phosphate cements

d. ទាំងអស់ខាងលើ

25 / 60

The disadvantage of rubber dam:

a. All are correct

b. Extra time

c. Patient discomfort

d. Difficult breathing

26 / 60

Tetracycline Stain caused by :

a. Broad spectrum of Codeine

b. Broad spectrum of non steroid anti-inflammatory (NSAID)

c. Broad spectrum of antibiotic especially Tetracycline

d. Broad spectrum of steroid

27 / 60

Standard care(non-operative therapy)- low risk caries:

a. Plaque control and Oral hygiene instruction

b. Use of fluoride

c. Dietary modification

d. ទាំងអស់ខាងលើ

28 / 60

Prognosis:

a. គឺជាការរក អោយឃើញនូវ ទីតាំងខូចខាត, រីករាលដាល ដល់ណា

b. គឺជាការប៉ាន់ស្មានអ្វីដែលនឹងកើតឡើង នៅពេលខាងមុខ ក្នុងករណីសំរេចចិត្តថាព្យាបាល រឺ អត់

c. គឺជាការសំគាល់ នៃប្រភេទជំងឺ

d. គឺជាការរក អោយឃើញ លក្ខណះធ្ងន់ធ្ងរ កំរិតណា

29 / 60

What precaution should be taken in indirect pulp capping:

a. ទាំងអស់ខាងលើ

b. Being careful not to expose the pulp

c. All infected dentin is excavated with large round burs and excavators

d. Rubber dam should be placed for infection control

30 / 60

In a system, a tooth is designated number ‘46’ the tooth is:

a. Permanent maxillary 2nd molar

b. Permanent maxillary right first molar

c. Permanent mandibula right molar

d. Permanent mandibular left first molar

31 / 60

In the three number formula the second unit describes:

a. Width of the blade in tenths of a millimeter

b. The blade angle in centigrades

c. The length of the blade in tenths of millimeter

d. The length of the blade in millimeters

32 / 60

Dental equipment refers of all of the following except:

a. Dental chair

b. Excavators

c. X-ray units

d. Operating unit

33 / 60

The following are the art and science of operative dentistry, except:

a. Api-cectomy of tooth root

b. Prognosis of defects of teeth

c. Treatment of tooth lesion

d. The diagnosis of tooth lesion

34 / 60

The first deciduous tooth to erupt is the:

a. Maxillary lateral incisor

b. Maxillary central incisor

c. Mandibular central incisor

d. Mandibular lateral incisor

35 / 60

The following statements on the success of direct pulp capping are correct except :

a. If previous pain has not occurred in the tooth the potential for success is more .

b. Young patients have greater potential for success than older one .

c. Large exposure and small pinpoint exposure have the same potential for success .

d. Mechanically done pulpal exposure has greater potential for success than exposure caused by caries .

36 / 60

The following statements on smear layer are correct except:

a. The smear layer is a uniform amorphous structural relatively smooth microcrystalline debris layer.

b. It occludes the dentin tubules.

c. The smear layer is formed over the remaining enamel and dentin.

d. The smear layer can be seen with the naked eye.

37 / 60

In the three unit formula of the instruments, the third is:

a. The width of the blade in millimeter

b. The blade angle in centigrades

c. The length of the blade in millimeter

d. The width of the blade in tenths of a millimeter

38 / 60

The characteristic feature of rampant nursing bottle caries is as followed, except:

a. It does not affect mandibular dentition

b. It affects maxillary four incisors, then molars followed by canines

c. After maxillary teeth it affects mandibular incisors, canines and molars

d. It occurs usually in deciduous dentition

39 / 60

Which the following is not a treatment result in the restoration?:

a. Esthetics

b. Proper tooth form,

c. Function of all teeth

d. Tooth defect still present

40 / 60

You indicate what is false: In the primary dentition there is:

a. Incisor

b. Molar

c. Canine

d. Premolar

41 / 60

The following are true, except:

a. In about 15 days the replacement Odontoblasts begin lay down the reparative dentin.

b. Reparative dentin is formed usually when tooth are mechanically prepared to within 1.5mm of the pulp. The cut fibers (Odontoblasts process) may die along with the corresponding Odonloblasts.

c. Reparative dentin is not confined to the localized irritated area.

d. The reparative dentin (tertiary dentin) is formed by replacement Odontoblasts in response to moderate level irritants.

42 / 60

In acute caries:

a. The caries progresses slowly

b. The caries tends to involve the pulp much later

c. Leads a rapid clinical course resulting in early pulp involvement

d. It is most common in adults

43 / 60

The correction and restoration in operative dentistry are as followed except:

a. Restoration of proper tooth function

b. Correction by alignment of incorrect tooth position

c. Restoration of proper tooth form

d. Restoration of esthetic

44 / 60

After operative procedure the patient

a. Esthetic not improved

b. The dental and general health of the patient is enhanced

c. Cannot speak well

d. Cannot eat easily

45 / 60

The following statements on peripheral seat or ledge on class 1 occlusal cavity are correct except :

a. Removal of the remaining infected dentin is best accomplished using the smallest instrument that fits the carious area .

b. If a central fissure remnant extends over most the floor the floor should be deepened to uncover the caries to a maximal preparation depth of 2 mm .

c. The peripheral seat or ledge can be circumferencial , interrupted , opposing

d. The flat floor should be at the previously described initial pulpal floor depth of 1.5 to 2mm and in sound enamel or dentin .

46 / 60

The first unit of basic instrument formula denotes:

a. Blade length in 1/10mm

b. Blade width in 1/10mm

c. Blade length in mm

d. Blade width in mm

47 / 60

GV Black simply classified cavities as:

a. Two classes of smooth surface and three classes of pit and fissure lesions

b. One class of smooth surface and four class of pit and fissure lesions

c. One class of pit and fissure and four classes of smooth surface lesions

d. Three classes of smooth surface and two classes of pit and fissure lesions

48 / 60

The following are true, except:

a. The distal wall is one among all external walls.

b. The external wall is a prepared cavity surface that extends to the external surface.

c. The external wall takes the name of the tooth surface (or aspect) that the wall is toward.

d. The pulpal wall is one among all external walls.

49 / 60

The instrument that is in the four unit formula is:

a. Binangle chisel

b. Binangle hatchet

c. The gingival margin trimmer

d. Straight chisel

50 / 60

The electric engine was in use:

a. In 1830

b. In 1874

c. In 1850

d. In 1800

51 / 60

In the use of radio-vision Graphy (R.V.G)

a. It provides instant image on the screen of a video monitor

b. It provides image on the screen of a video monitor in three hours

c. It provides image on the screen of a video monitor in one hour

d. It provides image on the screen of a video monitor in two hours

52 / 60

R.P.M in rotary instrument is:

a. Real pressure of movement

b. Reverse pressure motion

c. Reciprocal promotion manufacturing

d. Revolution per minute

53 / 60

Resistance to proximal displacement in a clan II amalgam cavity is provided by:

a. Gingival carosurface bevel

b. Occlusal dove tail

c. Converging proximal walls

d. Converging occlusal wall

54 / 60

The following statements on direct pulp capping are correct except:

a. Over the exposure site glass ionomer cement is sealed .

b. The procedure is placing the medicament over the exposure site as to provide an environment for the healing of the pulp .

c. The purpose of direct pulp capping is to preserve the vitality of the pulp.

d. Complete excavation of carious dentin is done during which pulpal exposure may take place .

55 / 60

All of the following are features of the high copper amalgam alloys except:

a. Low compressive strength

b. Less susceptible to corrosion

c. Low dimensional changes

d. Lower creep values

56 / 60

During cavity preparation with rotary instrumentation heat production is directly proportional to all of the following except:

a. Pressure

b. R.P.M

c. Area of tooth in contact with bur

d. Preoperative pain

57 / 60

Baltimore is in

a. Georgia

b. Pennsylvania

c. Massachuset

d. Maryland

58 / 60

The following statements on indirect pulp capping are correct except:

a. All the carious tissue is removed except the soft undiscolored dentin adjacent to the pulp .

b. After two to three months , the cement is removed and the cavity is inspected .

c. If no pain this undiscolored carious dentin part can be removed .

d. Then the cavity is cleaned , dried , covered by calcium hydroxide and thick mix of base .

59 / 60

Class II, carious lesions are on

a. Buccal or/and lingual surface of posterior teeth

b. Occlusal surfaces of posterior teeth

c. Proximal surfaces of anterior teeth

d. Proximal surfaces of posterior teeth

60 / 60

A.R.T technique is:

a. Atraumatic restorative treatment technique

b. Atraumatic resin treatment technique

c. Artificial restorative treatment technique

d. Artificial resin treatment technique

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Operative Dentistry I Test

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