Why are we not able to wear an expander but are able to wear braces? Does the expander changes the way you breath or talk?

You can choose any of the options you've named, but here is the order that I would put those options in.1st choice:  Since you just finished Invisalign, you should be able to get refinement trays and fix the area that you are not completely please with.  This would be the least...

Sorry to hear that you are experiencing discomfort.  I would talk to my dentist about this issue and ask him or her if they can make adjustments to alleviate or greatly reduce your pain.  It my be beneficial for your dentist to reduce the movements and increase the number of trays....

Based on your description, I would recommend going back to wearing the retainer full time day and night, then making an appointment with your dentist.  Your dentist can place a permanent (also called fixed) retainer that can be cemented to the back of your teeth as a little metal wire....

It's unclear exactly why your buttons are coming off, but it may due to a few things.  Here are the most common reasons that I have seen buttons come off over the last decade.  Reason #1:  The doctor makes the button so perfectly, that it holds the tooth too tight, which makes it...

Thanks for providing a photo, it makes your case easier to diagnose.  Yes, it is very common to remove 1 or 2 teeth prior to Invisalign treatment or metal braces.  This creates spaces that make it easy for your other teeth to move into.  Invisalign is great at closing spaces and...

Based on your photo and short description, you have a couple of options.Option #1 (most conservative method):  Metal braces and brackets to pull your K-9's down and straighten your teeth better.  Will likely take 1-2 years.Option #2 (less conservative method):  See an excellent...