Early Loss of Primary Teeth

Question 1

_____ serve as best space maintainers for
permanent dentition.

Answer 1

Primary teeth

Question 2

If premature extraction or loss of tooth is unavoidable (for any reason)the
safest option to maintain arch space is by placing a _______.

Answer 2

“Space Maintainer”

Question 3

If premature extraction or loss of tooth is unavoidable (for any reason)the
safest option to maintain arch space is by placing a _______.

The appliance maintains the extraction space for settlement of the
successor permanent tooth.

Answer 3

“Space Maintainer”

Question 4

If premature extraction or loss of tooth is unavoidable due to
extensive caries or other reasons, the safest option to maintain arch
space is by placing a _______.

Answer 4

Space Maintainer

Question 5

Space maintenance is appropriate only when what 3 things are present?

Answer 5

•All unerupted teeth are at the normal stage of development.
•Adequate space is available.
•All unerupted teeth are present.

Question 6

If a permanent successor will erupt within __ months,
a space maintainer is unnecessary.

Answer 6

6 months

Question 7

If more than ____-_____ of its
root has formed, SM is unnecessary.

Answer 7

one-half to two-thirds (1/2 to 2/3)

Question 8

We expect to see the tooth in the mouth when ____
of the root is developed.

Answer 8

3/4

Question 9

For a lower lingual holding arch, what teeth must be erupted?

Answer 9

Permanent incisors

Question 10

Before eruption of the permanent incisors, if a single primary molar has been
lost bilaterally, ______ space maintainers is recommended.

Answer 10

a pair of band & loop

Question 11

the permanent incisor tooth buds are ____ to the
primary incisors and often erupt lingually so this is why B&L SMs are better in bilateral primary molar loss

Answer 11

lingual

Question 12

If the space maintainer is not used on the premature loss of deciduous second
molar, the permanent first molar may tip or move mesially.
•The process of _____ the space lost by drifting of adjacent teeth following
premature loss of deciduous teeth/tooth is the treatment of choice.

Answer 12

re-gaining

Question 13

The _______ is similar appliance to the Space Maintainer but is
spring loaded.
This appliance is used to regain space when the first molar has
already begun to drift into the space left by the primary molar.

Answer 13

Space Regainer