Cross bite

Anterior cross bite refers to

• Mandibular anterior overlap maxillary anterior

• Maxillary anterior over mandibular anterior

• No overlap between upper and lower anterior

• None of the above

Buccal cusp of one or more maxillary posterior teeth occluding lingual to buccal cusps of mandibular teeth is referred to as

• Buccal occlusion

• Lingual occlusion 

• Buccal non occlusion 

• Lingual non occlusion

Single tooth cross bite is

• Skeletal in origin

• Functional in origin

• Dental in origin

• All of the above

In skeletal cross bite the molar and canine relation will be in 

• Class III

• Class I

• Class II

• Any of the options

Choice of Frankel appliance to correct Skeletal cross bite

• FR IV

• FR I

• FR III

• FR II

Catalan's appliance should be used for

• 4 weeks

• 6 weeks

• 8 weeks

• 12 weeks

Z spring used to treat cross bite in

• Maxillary anterior

• Mandibular anterior

• Both maxillary and mandibular anterior

• Both anterior and posterior

Skeletal anterior crossbite is corrected by

• Headgear

• Reverse pull headgear

• Chin cup

• Bionator

Skeletal posterior cross bite corrected by

• HYRAX

• Quad helix

• Coffin's spring

• Jackscrew

Developing anterior cross bite is corrected by

• Catalan's

• Tongue blade

• Z spring

• Fixed appliance