Removable orthodontic appliances can be inserted and removed by the patient and are used to treat cases requiring simple tipping movements of teeth. They have advantages like lower cost and chair time compared to fixed appliances. Components include retentive clasps, active components like springs/screws, and a base plate. The Adams clasp is a commonly used retentive component that provides rigidity and retention on multiple tooth types. Practical management includes checking for sore spots at delivery, instructing patients, and following up to adjust the appliance as needed.
2. Removable Orthodontic appliances are devices that
can be inserted and removed from the oral cavity by
the patient at will.
3. ADVANTAGES
Majority of cases which require tipping type of tooth
movement can be treated.
Can be handled by general practitioners
Less chair side time.
Less expensive.
Oral hygiene maintenance easier.
In case of damage they can be removed by the patient.
4. Can be removed for short period on socially sensitive
occasion.
5. Only simple tipping movement can be carried out.
Patient cooperation is very important.
7. Retentive components
Clasps act by engaging certain constricted areas of the
teeth that are called undercuts.
-Buccal undercuts
-Mesial and distal proximal undercuts.
8. Requirements of an ideal clasp.
Adequate retention
Permit usage in both fully erupted as well as partially
erupted teeth.
Passive
Easy to fabricate
Not impinge on soft tissues
Not interfere with normal occlusion.
9. Adam’s clasp
First described by Professor Philip Adam.
Liverpool clasp,modified arrowhead clasp.
0.7mm hard round stainless steel wire.
Adams clasp is made of the following parts.
-Two arrow heads.
-Bridge
-Two retentive arms.
10. Advantages
Rigid and offers excellent retention.
Can be fabricated on deciduous as well as permanent
teeth.
Used on partially or fully erupted teeth.
Can be used on molars,premolars and on incisors.
No specialized instuments required.
Small and occupies minimum space.
Can be modified in many ways.
11. Modifications
Adams with J hook
Adams with incorporated helix
Adams with additional arrowhead.
Adams with soldered buccal tube.
Adams with distal extension.
Adams on incisors and premolats.
13. Ideal requisites
Simple to fabricate
Easily adjustable
Should fit into available space without discomfort.
Easy to clean
Apply force of reqired magnitude and direction
14. Not slip or dislodge
Remain active for a long period of time.
15. Base plate
Unites all components
Helps in anchoring the appliance in place
Support the wire components
Bite planes may be incorporated.
16. Practical management of
removable orthodontic appliance.
At the time of delivery
Adequate retention of clasp unit.
Absence of sharp margins or nodules on the fitting
surface.
Active components should not press upon the gingiva
and cause blanching.
17. During the appliance delivery ,the active components
should not be activated can be delayed till the
following appointment.
18. Instructions
Teach the patient to wear and remove the appliance.
Appliance should be worn all the time .
Always use the clasp for removing the appliance.
Cleaning of the appliance.
In case of breakage report immediately.
19. Follow up visit
Enquire about the regularity of wear.
Check for sore spots or any pain in any region
Check for any interference in in tooth movement.
Look for any distortion of wire component.
Adjust the retentive unit if required.
Activate the active components.