Canine Substitution (Tufecki)

Question 1

What is the second most common congenitally missing tooth?

Answer 1

Maxillary lateral incisor

Question 2

What are 2 options for replacing a congenitally missing maxillary lateral incisor?

Answer 2

1. Space closure (canine substitution)

2. Space filling (FPD, implant)

Question 3

What is one of the main considerations during canine substitution?

Answer 3

Occlusion

Question 4

What is the scheme in which canines serve as lateral incisors and first premolars serve as canines?

Answer 4

Canine substitution

Question 5

What Angle class occlusion does NOT allow replacing a missing lateral incisor?

Answer 5

Class I

Question 6

What is the disadvantage of NOT replacing a missing lateral incisor?

Answer 6

It will require a prosthetic. The esthetic zone will be hard to match the shade and contour

Question 7

Is canine substitution permanent or is there a tendency for space to open?

Answer 7

There is a tendency for a space to open

Question 8

What occlusal scheme is lacking in canine substitution?

Answer 8

Canine-protected occlusion

Question 9

What malocclusion with missing lateral incisors is suited to canine substitution?

Answer 9

Class II

Question 10

What is the canine morphology that is more favorable for canine substitution?

Answer 10

Small, short, less angular canines

Question 11

What is a concern esthetically when doing canine substitution?

Answer 11

Color match with the central incisors (canines are usually darker

Question 12

How much wider are canines than laterals, on average?

Answer 12

1.2mm wider

Question 13

On which side of the canine is more reduction required to reduce it to the width of a lateral?

Answer 13

Reduce more on the distal

Question 14

When is flattening of the facial canine surface completed: before or after ortho?

Answer 14

After ortho

Question 15

What is a concern of the facial flattening done for canine substation?

Answer 15

It can have a yellowing effect as more dentin is exposed

Question 16

What must be done to the premolar that is moved up into the canine space for canine substitution?

Answer 16

1. Extrude first premolar

2. Rotate it mesially

Question 17

What are 2 reasons to rotate the premolar medially in canine substitution?

Answer 17

1. Create a better contact point

2. Camouflage the flast mesial surface of the premolar

Question 18

What has a huge effect on the perceptions of the outcome of canine substitution?

Answer 18

Surrounding teeth

Question 19

Is there a noticeable difference in function between canine substitution orthodontic treatment or prosthodontic treatment?

Answer 19

Nope

Question 20

Studies showed which group of people had a higher esthetic expectation for canine substitution orthodontic treatment: dentists or laypeople?

Answer 20

Laypeople