MATERIALS AND METHODS

Case 1

• 14-year-old girl• Problem: buccally erupting upper right canine • Aim: provide space for the canine• Appliance design: – A removable appliance is fabricated with • 2 ball clasps• a labial bow• finger spring to be placed between second premolar

and first molar

Case 2

• 13-year-old boy• Problem: upper left canine has no enough space to

erupt • Aim: – provide space for the canine– prevent later malposition of canine

• Appliance design: – A removable appliance fabricated with a “c” clasp, a ball

clasp, and a labial bow. Two finger springs is designated to distalize second and first molars in upper left quadrant

Case 3• 9-year-old boy• Problem:

– 12 & 22 have no enough space to erupt– a little space exists between upper central incisors

• Aim: – prevent later malposition of lateral incisors– To close space between upper central incisors

• Appliance design: – A removable appliance fabricated with four “c” clasps on upper

D’s and E’s for full retention, and 2 finger springs are designed to move the upper central incisors toward midline.

Case 4• 42-year-old female • Problem:

– severe attrition due to longterm edge-to-edge incisor relationship with a very unpleasant smile

– anterior crowding with labial displacement of centrals and lingual displacement of laterals

– rotational displacement of centrals • Aims:

– to resolve the lower anterior crowding– moving the lower central incisors lingually and the lateral incisors slightly labially

• Appliance design: – A removable appliance is fabricated with

• 4 “ball” clasps• a labial bow is designed to force centrals lingually and to retain the appliance• A lingual bow is included to push laterals labially, simultaneously. • Two occlusal rest on 6’s hold the appliance vertically

– Finally, the patient underwent aesthetic restoration of the upper and lower incisors

Case 5• 14-year-old girl• Problem: – protruded anterior teeth with excessive overjet

• Appliance design: – A Hawley retainer with a circumferential wire was

fabricated for maxillary arch. – Gradual tightening of loops and simultaneous

acryl reduction on the palatal side of anterior teeth permits gradual lingual tipping of anterior teeth.