I have been doing Orthodontics for 30 years and I do NOT recommend a Bonded Retainer because:
1. It interferes with cleaning your teeth and can cause irritation.
2. It does not retain the posterior teeth
3.. In most cases it does not work well on the upper teeth and can interfere with speech.
I recommend the Vivera system by Invisalign. This can be used for retenton after any type of Orthodontic movement.
Vivera is a retention system which gives you 3 sets of retainers which you wear at night, which do not touch your gum tissue nor interfere with any aspect of maintaining the health of your teeth. They are comfortable and you can order more of if you ever need to without causing any relapse of the orthodontic care and result you have attained.