A 0.5 - 1 mm

B 1 - 1.5 mm

C 1.5 - 2 mm

D 1.75 - 2 mm

A 1 facial and 2 lingual

B 1 lingual and 2 facial

C 1 mesial and 2 buccal

D 1 mesial and 1 distal

A 65 - 75%

B 75 - 80%

C 80 - 90%

D 100%

A L.E.D. light cure units

B Laser light cure units

C Quartz-Tungsten-Halogen Light cure units

D PAC light cure units

A Alpha - hemihydrates

B Beta - hemihydrates

C Calcium sulphate dihydrate

D Orthorhombic anhydrate

A Compressive strength

B Tensile strength

C Corrosion

D Creep

A Tilted abutment

B Esthetic areas

C Upper canine PVC

D Not recommended

A To intercept a developing arch-length deficiency and to reduce or eliminate the need for extensive appliance therapy

B Reduce arch-length deficiency

C To plan for extensive appliance therapy

D To reduce arch-length deficiency & to plan for extensive appliance therapy

A Class III maxillary arch

B Class III mandibular arch

C Class II mandibular arch

D Class IV mandibular arch

A Less tip more torque

B Less torque more tip

C More tip and torque

D Tipping and retraction of anterior teeth