Early loss deciduous teeth

Question 1

Early Loss of Primary
Teeth options

Answer 1

• Space Maintainer
• Space Regaining

Question 2

Importance of primary dentition
* The primary dentition plays a very important role in?
* Exfoliation of primary teeth and eruption of permanent teeth is?

Answer 2

• The primary dentition plays a very important role in the child’s growth and development, not only in terms of speech, chewing, appearance and the prevention of bad habits but also in the guidance and eruption of permanent teeth.
• Exfoliation of primary teeth and eruption of permanent teeth
  is a normal physiological process

Question 3

Reasons for Loss of Primary
Teeth

Answer 3

• Premature loss of primary teeth
• Proximal carious lesions
• Trauma
• Orthodontics reasons. (Crowding,
  Malalignment,…

Question 4

Early loss of deciduous teeth may lead to:
* migration?
* Malocclusion in?
* Crowding?
* Impaction of? why?
* opposing tooth?
* Changing/redirecting the path of?
* arch length?
* arch-perimeter?

Answer 4

• Mesial migration of teeth
• Malocclusion in permanent dentition
• Crowding
• Impaction of permanent teeth (loss of space for eruption)
• Supraeruption of opposing teeth
• Changing/redirecting the path of eruption
• Loss of the arch length
• Decreasing arch-perimeter

Question 5

what is the best option for avoiding problems of losing deciduous teeth?

Answer 5

The best way to avoid these problems is to preserve the primary teeth in the arch till their normal time of exfoliation is attained.
Primary teeth serve as the best space maintainers for the permanent dentition

Question 6

• If premature extraction or loss of tooth is unavoidable (for any
  reason)the safest option to maintain arch space is?

Answer 6

• If premature extraction or loss of tooth is unavoidable (for any reason)the safest option to maintain arch space is by placing a “Space Maintainer”.
• The SM appliance maintains the extraction space for settlement of the successor permanent tooth

Question 7

Space maintainer indication

Answer 7

• 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 Space Maintainer.

Question 8

Space maintenance is appropriate only when:
* All unerupted teeth are?
* space?
* unerupted teeth?

Answer 8

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

Question 9

Important numbers to remember
* If a permanent successor will erupt within ? months, a space maintainer is unnecessary.
* If more than ? of its root has formed, SM is unnecessary.
* We expect to see the tooth in the mouth when ? of the root is developed.

Answer 9

• If a permanent successor will erupt within 6 months, a space maintainer is unnecessary.
• If more than one-half to two-thirds (1/2 to 2/3) of its root has formed, SM is unnecessary.
• We expect to see the tooth in the mouth when 3/4 of the root is developed.

Question 10

in what scenarios is spae maintenance inadequate/innapropriate
* loss?
* Missing?
* skeletal?
* crowding?
* spacing?

Answer 10

• Space loss. (not enough space for the permanent tooth)
• Missing permanent tooth.
• Severe skeletal discrepancy.
• Severe crowding.
• Severe spacing.

Question 11

types of space maintainers

Answer 11

Question 12

common fixed space maintainers

Answer 12

• Four common fixed appliances generally used to maintain space in the primary dentition are:
• Band & Loop. (Crown & Loop)
• Lower Lingual Holding Arch. (LLHA)
• Nance.
• Distal Shoe

Question 13

what is this? when could it be used?

Answer 13

band and loop with heavy wire, used when deciduous molar lost early

Question 14

what is this? when can it be used?

Answer 14

lower lingual holding arch
used when all incisors erupted to maintain space for PM’s

Question 15

what is this? what is its use?

Answer 15

nance, use of acrylic puck t maintian molars in space and allow proper eruption

Question 16

what is this? when is it used?

Answer 16

distal shoe, keeps space for perm molar eruption when primary molar lost too soon
molar will erupt distal to the shoe

Question 17

Before eruption of the permanent incisors, if a single primary molar has been lost bilaterally, what is recomended

Answer 17

a pair of band & loop space maintainers is recommended
This is advisable because the permanent incisor tooth buds are
lingual to the primary incisors and often erupt lingually and can do so without a lingual wire present

Question 18

band and loop survival

Answer 18

The survival of band and loops is not impressive. It has been
judged to be approximately 18 months with cement failure
cited as the most frequent problem. (routine recall visits

Question 19

Space Regaining
* If the space maintainer is not used on the premature loss of deciduous second molar, the permanent first molar may?
* treatment of choice?

Answer 19

• 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 re-gaining the space lost by drifting of adjacent teeth following premature loss of deciduous teeth/tooth is the treatment of choice.

Question 20

Space Regainer appliance

Answer 20

• The Space Regainer 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.

Question 21

Answer 21

space regainer

Question 22

removable space regainers?

Answer 22

can be activated for .25mm with each activation

Question 23

how is this appliance working?

Answer 23

space regainer, working to move M drifted molar and rotate to the B for improved space.