Lec 6 Diastema Closure

Question 1

Tooth shade should be obtained by comparing the ____________ of the tooth against the middle of the shade tab.

Answer 1

center middle-third

Question 2

Recommended isolation technique for diastema closure.

Answer 2

Rubber dam isolation with ligatures

Question 3

Keeps the operatory field dry and free of contaminants.

Answer 3

Rubber dam

Question 4

Help the rubber dam push the gingiva apically, to allow access to the proximal gingival areas for ideal contouring and polishing of the restorations.

Answer 4

Ligatures

Question 5

The ________ surface of the teeth is minimally prepared for composite placement.

Answer 5

enamel

Question 6

TRUE OR FALSE

Teeth is only minimally prepared for composite placement.

Answer 6

TRUE

Question 7

TRUE OR FALSE

The enchant is only placed on where the composite will be put.

Answer 7

TRUE

Question 8

TRUE OR FALSE

It’s recommended to remove only a portion of the etchant.

Answer 8

FALSE

Question 9

TRUE OR FALSE

Usually, tooth preparation is not required when closing a diastema

Answer 9

TRUE

Question 10

In situations where the teeth are slightly misaligned, a slight ____________ may be necessary when the teeth are positioned facially.

Answer 10

recontouring

Question 11

No preparation is necessary when the teeth are _________ positioned.

Answer 11

lingually

Question 12

TRUE OR FALSE

Roughening of the enamel is recommended in any adhesives to be used.

Answer 12

FALSE

Question 13

Roughening of the enamel is recommended only when __________ adhesives are to be used

Answer 13

self-etch adhesives

Question 14

The enamel surface of both teeth is etched for at least __________, after which the adhesive bonding agent is placed and cured.

Answer 14

30 seconds

Question 15

2 techniques for diastema closure.

Answer 15

1) Free hand technique
2) Modified matrix approach

Question 16

A thin, resin coating applied to the chewing surface of molars, premolars, and any deep grooves of the teeth.

Answer 16

Preventive resin restoration (PRR)

Question 17

Protects the tooth by sealing the deep grooves and creating a smooth, easy-to-clean surface.

Answer 17

Preventive resin restoration (PRR)

Question 18

This approach facilitates prevention and early intervention, in order to prevent or stop the dental caries process before it reaches the end stage of the disease, which is also known as the “hole” or cavitation of the tooth.

Answer 18

Preventive resin restoration (PRR)

Question 19

This approach facilitates prevention and early intervention, in order to prevent or stop the ____________ process before it reaches the end stage of the disease.

Answer 19

dental caries

Question 20

End stage of dental caries

Answer 20

“hole” or cavitation of the tooth

Question 21

Type of PRR:

Suspicious pits and fissures where caries removal is limited to the enamel

Answer 21

Type A

Question 22

Type of PRR:

Incipient lesion in dentin that is small and confined.

Answer 22

Type B

Question 23

Type of PRR:

Need for greater exploratory preparation in dentin.

Answer 23

Type C

Question 24

• Cleaning: A ________ should be applied to the tooth surface using a prophy cup.

Conditioning of tooth: after rinsing and drying the tooth, __________ is applied for 10 seconds to increase the surface energy and wettability of the tooth, which improves chemical bonding.

Placement of restoration: the mixed GIC is carried to the cavity with the help of a _________ and adapted using a _________. Care is necessary to avoid the cement sticking to the spatula as it is hard to remove.

Answer 24

• pumice slurry
• 10% polyacrylic acid
• cement carrier; condenser

Question 25

Allows the re-establishment of proper form, function, and esthetic dental structure, reducing post restoration adjustments.

Answer 25

Occlusal stamp technique