Invisalign for Top Teeth Only?

That seems to be the question here but not necessarily the answer! While it is certainly "possible" to  treat a single arch Orthodontically often times this will not provide the Patient with the best long term result. The Upper and Lower Teeth  will function best and Pain Free if they relate to each other in a precise and harmonious fashion. Disturbing this relationship by moving Teeth in the Upper Arch while failing to make compensatory movements in the Lower Arch will often times lead to Pain and Discomfort while Chewing. Considering that the fee for Invisalign is similar regardless if you treat one or both Arches you should trust your chosen Dental Provider to make this decision!

As long as straightening your top teeth does not worsen your bite it may be fine to treat only the upper arch.  Often, however, it is not possible to treat just one arch because doing so makes the bite "uncoordinated' and problems may result from this.  Also, getting the bite correct actually helps the teeth stay straight, so it may pay in the long run to correct both arches.  To find out if any of these points apply to your case you should visit an orthodontist for a consultation.