Hi, and thank you for your question. I completely disagree with the dentist that said you require removal of any teeth before Invisalign. Removing teeth and making your arch (mouth form) smaller research now shows can lead to other problems such as sleep apnea and clenching/grinding. I have been...
Teeth clenching (bruxism) is often caused by your bite being incorrect. Invisalign does work for those who clench their teeth, but more attention has to be paid by the doctor. Sometimes bruxism can be improved by aligning your teeth. Botox for jaw muscles also help bruxism in certain cases...
First, if you have not had a sleep test, get one!Invisalign and other traditional "night guards/TMJ" appliances can make sleep breathing more difficult IF you have a sleep breathing disorder......get a sleep test, ASAP.