Braces are dental tools which are used to align or straighten the teeth and guide the teeth to the right position. They are made of brackets, wires and bands. Braces aid to correct irregular teeth positioning, jaw correction, improvement in chewing, smile aesthetics and improvement in chewing. Your dentist guide you on treatment options and modalities depending upon dental condition.
NO, it does not hurt but you may feel little discomfort.
Duration varies from purpose of wearing the braces. Generally 1-1.5 years.
Yes, atleast 3 times a day you should brush to make sure that no food is suck in the braces.
And you must use floss daily too.
A retainer is a custom made device used after an orthodontic treatment, in order to make the tooth settle to it’s new positions and the gums might get well adjusted to them. It is necessary as it helps the gums to adjust to the changes in the bone.