Presentasi Nad

Components of Removable Appliance for tooth movements

Retentive components• Casps/

cangkolan

Active components• Spring • Screw • Elastics

Baseplate

Active Components

• Ada/tidaknya helix1. Springs

• Palatally positioned: like the finger, Z and Recurved Z springs. – A, helical spring for distal

tipping of a molar (jari)– B, double helical spring for

labial tipping of a lateral incisor; (Z)

– C, paddle spring for labial movement of an incisor

• Labially positioned: like buccal canine retractor, Hawley arch and Robbert retractor.– D, buccal loop spring, to tip a

canine lingually

• Ada/tidaknya helix

• Posisi Spring 1. Springs

Hawleyretainer labial bow

• Kurang flexible, dibanding spring

• Digunakan untuk memindahkan group of teet

2. Screw

3. Elastics

Retentive Components Cangkolan (clasp)

• Membantu menjaga appliance tetap di tempat, dan menahan dari displacement selama pergerakan komponen aktif.

• Efektifitas komponen aktif retensi

Baseplate

• Membentuk bagian besar dari ortho lepasan • Menghubungkan komponen-komponen