lingual arch space maintainer indications contraindications modifications

1. Lingual Arch Space
Maintainer
Presented by : Rahaf Najjar

2. Definition:
 Fixed, passive, non functional space
maintaining appliance.
 Bilateral mandibular appliance.
 Used to control:
1.Antero-posterior tooth movement
2.Arch perimeter distortion

4. Indications:
Bilateral loss of single / multiple 1ry lower
molars, after eruption of lower incisors.
Minor movement of anterior teeth
Maintenance of leeway space

5. Contraindications:
Before the eruption of permanent lower
incisors.

6. DisadvantagesAdvantages
1) doesn't prevent extrusion of
opposing teeth.
2) High chance of appliance
distortion by tongue force.
3) Can promote decay in pts with
bad OH.
1) Allow eruption of permeant
without interference.
2) Not easily displaced.
3) Easy to maintain good OH.
4) Can be modified and used as
space regaining appliance.
5) Patients comfort.

7. Parts of the Appliance:
 2 bands in permeant 1st molars/ rarely in
2nd deciduous molars (E’s).
 Stainless steel wire.
 The wire is soldered to the bands.

8. Fabrication:
Bands are adapted to the molars.
A pick up alginate impression is taken.
 prefabricated wire placed or soldered to
the band or can be custom made in lab

9.  Wire should contact
cingulum of
mandibular incisors
slightly above
gingival papillae .
 Should lie on gingival
third of primary
molar
 Should rest at middle
third of banded
molar

10. Modifications:
 Auxiliary springs
incorporated to bring about
minor individual tooth
movement
 Looped lingual arch

11. 3D® Lingual Arch:
 This appliance allows for a set-up of a more
positive anchorage for a variety of treatment
functions. The Lingual Arch plugs into the lingual
tube and is available in eight sizes.

12. The Pedo Partial Appliance:
 Fabricated with a lingual arch soldered to bands
and pedo teeth in acrylic.
 Each tooth is reinforced to prevent breakage.

13. References:
 Paul S. Casamassimo DDS MS . Pediatric Dentistry: Infancy
through Adolescence, 5th edition
 https://www.rmortho.com/products/3d-lingual-arch/
 Angus C. Cameron BDS. Handbook of Pediatric Dentistry,
4th edition
 Jeffrey A. Dean DDS MSD. McDonald and Avery Dentistry
for the Child and Adolescent, 9th Edition