Question 1

What type of sealant is polymerized or hardened by visible light?&#10;A) Photopolymerized&#10;B) Autopolymerized&#10;C) Self-etching&#10;D) Unfilled

Accepted Answer

Photopolymerized sealant is hardened through the use of visible light, which causes a chemical reaction to occur and harden the material. This type of sealant is commonly used in dental offices and provides a quick and efficient method of sealing teeth.

Question 2

All of the following are contraindications to placing sealants EXCEPT one.Which one is the EXCEPTION?&#10;A) Coalesced,shallow,fused fissures&#10;B) Proximal caries&#10;C) Caries that extend into the dentin&#10;D) Full eruption

Accepted Answer

Full eruption is not a contraindication to placing sealants. In fact, sealants are often recommended as a preventive measure as soon as the first molars erupt. Coalesced, shallow, fused fissures may not hold the sealant well and proximal caries or caries that extend into the dentin indicate the need for more invasive treatment such as a restoration.

Question 3

Which tooth surfaces most benefit from the placement of dental sealants?&#10;A) Occlusal pit and fissures&#10;B) Interproximal areas&#10;C) Smooth surfaces&#10;D) Well-coalesced fissures

Accepted Answer

Well-coalesced fissures

Question 4

Which of the following is the best indication for placing a dental sealant on a tooth?&#10;A) Caries that extend into the dentin&#10;B) Well-coalesced pits and fissures&#10;C) Not-well-coalesced pits and fissures&#10;D) A child who cannot sit still

Accepted Answer

Not-well-coalesced pits and fissures are the best indication for placing a dental sealant on a tooth because these areas are more prone to developing caries due to the difficulty in cleaning them effectively. Sealants provide a protective barrier, preventing bacteria and food particles from entering these vulnerable areas.

Question 5

Most often sealant loss occurs soon after placement.This loss is usually caused by poor technique in isolation.&#10;A) Both statements are true.&#10;B) Both statements are false.&#10;C) The first statement is true; the second is false.&#10;D) The first statement is false; the second is true.

Accepted Answer

Both statements are true. The most common reason for sealant loss soon after placement is indeed poor technique in isolation, which can lead to contamination and inadequate adhesion of the sealant to the tooth surface.

Question 6

What would you use to assess for excess sealant material on the occlusal surface?&#10;A) Articulating paper&#10;B) Dental floss&#10;C) A rubber dam&#10;D) Cotton roll holders

Accepted Answer

Articulating paper allows for easy visualization of any excess sealant material on the occlusal surface by identifying areas of contact and lack of contact with opposing teeth. Dental floss, a rubber dam, and cotton roll holders do not provide the same level of assessment for excess sealant material.

Question 7

Sealants that use a catalyst and a base are known as&#10;A) Autopolymerized&#10;B) Monopolymerized&#10;C) Photopolymerized&#10;D) Shadowpolymerized

Accepted Answer

Sealants that use a catalyst and a base are known as self-cured or autopolymerized sealants. These sealants use a chemical reaction between the base and catalyst to harden or cure the material, without the need for a light source or external energy.

Question 8

What would you use to assess for excess sealant material in the proximal areas?&#10;A) Articulating paper&#10;B) Dental floss&#10;C) A rubber dam&#10;D) Cotton roll holders

Accepted Answer

The answer of What would you use to assess for...

Question 9

The most common reason for failure of a sealant is&#10;A) Moisture contamination during sealant placement&#10;B) Excessive rinsing after etching&#10;C) Pits and fissures that are too deep&#10;D) Inadequate length of curing time

Accepted Answer

Moisture contamination during sealant placement can cause the sealant to not properly bond to the tooth surface, leading to failure. Excessive rinsing after etching, pits and fissures that are too deep, and inadequate length of curing time can also contribute to sealant failure, but moisture contamination is the most common reason.

Question 10

Originally,there was concern that sealants would trap bacteria in the pit and the caries would proliferate.However,researchers are now experimenting with sealing interproximal incipient caries.&#10;A) Both statements are true.&#10;B) Both statements are false&#10;C) The first statement is true; the second is false.&#10;D) The first statement is false; the second is true.

Accepted Answer

Both statements are accurate. Initially, there was concern that using sealants might trap bacteria, potentially leading to increased decay. However, current research is exploring the use of sealants to address early-stage decay between teeth (interproximal incipient caries), indicating a shift in understanding and application of dental sealants.

Question 11

Acid etch is used during sealant application to&#10;A) Create a microscopic roughness&#10;B) Aid in the remineralization process&#10;C) Create a monomer chain&#10;D) Photopolymerize

Accepted Answer

The answer of Acid etch is used during sealant application...

Question 12

Which of the following monomers may be dental sealant material?&#10;A) Bisphenol A-glycidyl methacrylate&#10;B) Urethane dimethacrylate&#10;C) Composite filler quartz&#10;D) Both A and B&#10;E) All of the above

Accepted Answer

The answer of Which of the following monomers may be...

Question 13

Dental sealants are classified by filler content,method of polymerization,color,and&#10;A) Tooth location&#10;B) Surface retention&#10;C) Releasing properties&#10;D) Light activation

Accepted Answer

The answer of Dental sealants are classified by filler content,method...

Question 14

Acid-etched tooth enamel may appear&#10;A) Dull and rough&#10;B) Dull and smooth&#10;C) Chalky white and opaque&#10;D) Smooth and reflective

Accepted Answer

The answer of Acid-etched tooth enamel may appear&#10;A) Dull and...

Question 15

Sealants work by creating a physical barrier between cariogenic bacteria&#10;A) And the bonding mechanism&#10;B) While increasing surface area&#10;C) And the susceptible pit and fissure surfaces of the tooth&#10;D) Which creates remineralized tooth surfaces

Accepted Answer

The answer of Sealants work by creating a physical barrier...

Question 16

The sealant is held in place by a(n)______________bond with the tooth.&#10;A) Mechanical&#10;B) Compressive&#10;C) Chemical&#10;D) Enamel

Accepted Answer

The answer of The sealant is held in place by...

Question 17

Fillers are added to sealants to increase the durability and make them more resistant to occlusal wear.Filled sealants have silica and quartz particles added to increase strength and hardness.&#10;A) Both statements are true.&#10;B) Both statements are false&#10;C) The first statement is true; the second is false.&#10;D) The first statement is false; the second is true.

Accepted Answer

The answer of Fillers are added to sealants to increase...

Deck 22: Sealants