Term
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Definition
| The bur used to make the buccal and lingual gingival trimmer walls parallel to each other |
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Term
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Definition
| The bur used to make the walls converging |
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Term
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Definition
| The transmit rotational and translational forces to the head |
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Term
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Definition
| Streptococcus mutans are _____ and therefore _____. |
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Term
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Definition
When restoring a class II or class III lesion it is important to create properly shaped
embrasures for all of the following reasons except one. Which one is the exception |
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Term
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Definition
| An excavator primarily used with a pull motion |
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Term
| The first statement is true, the second is false |
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Definition
Xerostomia is the most common adverse side effect of medications. This is attributed for
cholinergic effects of many medications |
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Term
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Definition
| The caries cone in enamel is larger than in dentin is known as |
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Term
| The first statement is true, the second is false |
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Definition
The mineral content of dentin increases with age. Dentin may become softer with age as a
result of its organic content |
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Term
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Definition
| Caries that remain in a completed tooth preparation by accident is known as |
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Term
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Definition
| Caries activity can be expected to increase in the mouth or |
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Term
| The first statement is true, the second is false |
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Definition
When restoring the embrasures of posterior teeth, the contact should be formed slightly
buccal from center. This will create a wider facial embrasure |
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Term
| A latch type contra-angle handpiece |
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Definition
| A type of shane which has a length of 0.520 bin-angle |
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Term
| The first statement is false, the second statement is true |
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Definition
Dentin hardness near the DEJ is about three times lesser than the dentin near the pulp. The
hardness of dentin averages one fifth that of enamel |
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Term
| Gingival to the contact area |
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Definition
| An incipient carious lesion interproximal surface |
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Term
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Definition
| This is used to prepare retentive areas on anterior teeth |
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Term
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Definition
In a carious lesions in which caries has extended into dentin, which of the following zones
contains infected dentin and is not allowed capable of remineralization |
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Term
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Definition
| The procedure of reshaping grooves with rotary cutting instrument |
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Term
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Definition
Change in dentinal structure as a response to slowly progessive or mild irritations such as
mechanical abrasion or chemical erosion is known as |
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Term
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Definition
| The original carious lesion of the tooth is known as |
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Term
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Definition
| Dentin is reversibly denatured and should be preserved |
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Term
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Definition
| Which cavities can involve any teeth, anterior, or posterior? |
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Term
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Definition
| All of the following are associated with rampant caries except |
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Term
| The first statement is false, the second statement is true |
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Definition
Dentinal crystallites are slightly bigger than enamel crystallines. The hydroxyapatite
crysttallites of dentin are arrange in a less systemic manner than enamel crystallites. |
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Term
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Definition
| Used for removal of caries |
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Term
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Definition
| Describe as a combination of chisel and gingival trimmer |
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Term
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Definition
Ribbon like bundles of poorly calcified rods causing lateral spread of caries on DEJ are known
as |
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Term
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Definition
| Dentin formed after root completion |
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Term
| Mandibular first bicuspid |
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Definition
| Which tooth requires special attention when preparing the occlusal aspect for a restoration? |
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Term
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Definition
| This provides a bearing surface to control the alignment and concentricity of the instrument |
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Term
| Dextrans are insoluble and sticky |
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Definition
| Dental plaque is believed to adhere to teeth because |
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Term
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Definition
| The initiation of caries four entities. Which of the following is not one of them? |
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Term
| The statement is correct, but the reason is not |
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Definition
| Sealants can be effective when places over incipient carious lesions because caries is caused by anaerobic microorganisms |
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Term
| Are base to base at the DEJ |
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Definition
| Pit and fissure caries is usually characterized by cones of decay that |
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Term
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Definition
Which of the following instruments is used for preparing retentive areas and sharpening
internal lines angles on anterior teeth? |
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Term
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Definition
Chronic caries is charactirzed by all of the following except one. Which one is the
exception? |
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Term
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Definition
| Instruments used for handling resins are made of |
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Term
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Definition
| This must be removed and not remineralizable |
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Term
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Definition
| Dentin that is reversibly denature and should be preserver |
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Term
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Definition
| This is formed by replacement odontoblasts in response to moderate-level irritants |
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Term
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Definition
| Caries found on the gingival third on the distal surface of 46 is classified as: |
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Term
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Definition
| Chemicomechanical loss of tooth tissue is termed |
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Term
| Pulp is protected from heat |
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Definition
| Use of water spray during cutting procedures advantages |
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Term
| The first statement is true, the second is false |
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Definition
| Chisels are used primarily to cut enamel, while hatchets are used to cut dentin |
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Term
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Definition
| This is mostly used for tooth preparation employing the lingual approach on anterior teeth |
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Term
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Definition
| The bur used to flatten the pulpal floor |
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Term
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Definition
| Caries found on the gingival third on the mesial surface of 11 is classified as |
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Term
| Forms a gelatinous matrix |
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Definition
| Streptococcus mutants is considered to be a principal etiologic agent of caries because it produces organic acids and it: |
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Term
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Definition
| Sensitivity can be felt in enamel due to the presence of |
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Term
| Organic and inorganic constituents of dentin are homogenous in structure |
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Definition
| All of the following describe the compositional and structural aspects of dentin EXCEPT: |
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Term
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Definition
| Dentinal tubules are filled with calcified material |
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Term
| Both statement and the reason are correct and related |
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Definition
| The rate of senile caries increasing in part because of the increase in gingival recession |
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Term
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Definition
There are four zones of carious enamel, the zone of incipient lesion. Which of the ones is the
largest? |
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Term
| Streptococcus mutants and lactobacilli |
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Definition
| The most common cariogenic bacteria responsible for coronal caries are Veillonella |
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Term
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Definition
| This is used to sharpen line angles and convivence points for gold foil preps |
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Term
Visible cavitation
b. Restoration in past 3 years
c. Exposed roots
d. Deep pit and fissures |
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Definition
| Which of the following are known as high-risk factors for caries? |
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Term
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Definition
| Hand cutting instrument are composed of |
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Term
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Definition
G.V black concluded that the following areas on tooth surfaces are relatively non
self-cleanable |
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Term
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Definition
| Caries found on the transverse ridge of 34 is classified as |
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Term
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Definition
When removing caries, which of the following layers of dentin are affected, but not infected,
and therefore do not need to be removed? |
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Term
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Definition
| The following are true of dental caries except |
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Term
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Definition
| The grasp that permits the greatest delicacy of touch |
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Term
| Streptococcus mutans within dental plaque |
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Definition
| There is abundant evidence that the initiation of dental caries requires a high proportion of |
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Term
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Definition
This is established by placing a ring finger on a tooth of the same arch and ad close to the
operating site as possible |
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Term
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Definition
| Performs the desired shaping of tooth |
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Term
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Definition
The handle is placed in the pal of the hand and grasped by all fingers while the thumb is free
of the instrument |
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Term
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Definition
| Has a circular cutting edge and claw-like blade |
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Term
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Definition
| The idea enamel-amalgam interface |
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Term
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Definition
| The microorganism and most commonly associated with root surface caries is: |
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Term
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Definition
| Caries that occur at the junction of restoration and tooth is known as: |
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Term
| Sucrose, glucans, lactic acid |
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Definition
___ is degrading by streptococcus mutans ___ and ___ therefore causing initiation and
progression |
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Term
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Definition
| Produces bevel on axiopulpal line angle |
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Term
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Definition
Hand instruments used to protect soft tissue from contact with sharp cutting or abrasive
instruments |
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Term
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Definition
| The bur used to make walls diverging especially for inlay preparations |
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Term
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Definition
| A 169 may be used for removal of soft carious dentin |
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Term
| Minimize dehydration of the dentinal surface |
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Definition
Which of the following is the most effective way to reduce injury to the pulp during a
restorative procedure? |
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Term
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Definition
The ideal amount if dentin required between an amalgam restoration and the pulp for
insulation is |
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Term
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Definition
| A type of shank of shank which has a diameter of 0.0628 |
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Term
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Definition
| Another name for dental plaque is |
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Term
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Definition
In carious lesion in which caries has extended into dentin, which of the following zones
contains infected dentin and is not capable of remineralization? |
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Term
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Definition
| Fluoride reduces the rate of enamel solubility. This increases the hardness of enamel. |
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Term
|
Definition
Senile carious lesions are mostly comonly found exclusively on the following areas on the
teeth |
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Term
| The first statement is false, the second statement is true |
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Definition
| Secondary dentin is formed in response to caries, operative procedures or wear. The dentin formed in response is formed by secondary odontoblast |
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Term
|
Definition
Full length enamel rods or full-length rods supported by shorter rods terminating
on sound dentin |
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Term
| Not been invaded by microorganisms |
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Definition
| Affected dentin differs from infected dentin in that is has: |
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Term
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Definition
| What is the blade length of a cutting instrument with the following formula: 10-85-7-14? |
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Term
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Definition
| When spreads of caries along DEJ exceeds the caries in enamel is known as: |
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Term
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Definition
Studies have established that root sensitivity is due in part to open dentinal tubules at the
root surface. The hydrodynamic theory is the proposed mechanism for this sensitivity |
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Term
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Definition
| The bur used for preparation of retention grooves |
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Term
| spoon excavator straight chisel |
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Definition
You set down the handpiece after preparing a class II amalgam on tooth #4. Your assistant
hands you a _____ so you can remove the last bit of caries and then the ____ so you can plane the facial and lingual walls of the preparation. |
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