Thumb Sucking Revision Questions

Question 1

Occulusal features of sucking habit

Answer 1

Proclined of upper anteriors
Retroclined of lower anteriors
Localised or incomplete anterior open bite
narrow arch (upper) 
Unilateral posterior crossbite

Question 2

How to stop thumb sucking

Answer 2

positive reinforcement 
bitter nail varinsh
elastoplast for digit
removable habit breaker
Socks on hands at night

Question 3

Posterior crossbite with thumb sucking

Answer 3

thumb in mouth causes mandible to drop down and the tongue held in lower postion
Sucking action caused by cheeks - narrows maxillary dentition and posterior crossbite