Will removal of bonding change the structure of my teeth and make my gap bigger?

It is likely that if you have the bonding removed the teeth will look smaller and the space larger.  It might be time to replace with veneers for a nice, natural look or consider orthodontics. Good luck. 

Hi
First of all we need to know why bonding was done for you. If it was done to close the gap between teeth , then definitely the removal of that bond will create a space. If you are not happy with the bonding finish or Color or shape , you can think of ceramic veneers. They can be matched well with your existing teeth in appearance, and doesnot get discoloured. It has a long life. Please do consult your dentist.
If you are in India then I would suggest you FMS Dental Hospitals for any advanced dental treatments.

Without photos it's hard to tell
But if you don't like the results of your bonding, then there's a fair chance the original dentist didn't change your tooth underneath.  To close a space, expert cosmetic dentists will usually place some bonding below the gum line to make the shape look more natural. This will sometimes be done "prep-less" where no drill is used, or "prepped" where some of your natural tooth is changed/reshaped first. My suspicion is that if you want your bonding removed, it does not look very natural to you. And if this is the case, your first dentist may have only placed bonding on top of the teeth without "prepping" them. If the teeth were in fact "prepped" then a great cosmetic dentist can recreate your original look from past photos, etc.
Yes bonding can be removed without hurting your tooth
Bonding can be carefully removed with special instruments that exclusively remove the material without altering or damaging your natural tooth. As long as your first dentist didn't change your natural tooth, you can 100% get your natural appearance back without damage to them.
See an expert cosmetic dentist
Whether just to remove the old bonding, or if you would like new bonding that better closes your space in a natural-looking way, be sure to seek a cosmetic dentist that can show you their OWN before and after images of exactly this type of procedure. (Watch out for "stock photography"... which has nothing to do with that doctor's artistic abilities. Any experienced cosmetic dentist will have these before and after images very readily available for you to see.
Best,
Dr. Jason

Why don’t you plan on doing ClearCorrect or Invisalign at the same time the bonding is removed.  The trays will make the gap unnoticeable and close it.

There is the possibility that the gap will be larger than before the bonding was placed.  Most dentists remove a small amount of tooth structure to blend the edge of the bonding so that there isn't an obvious demarcation between tooth and bonding.  If this was the case, you could see a slightly larger gap than you had before.  Also, if your teeth have shifted at all in the past six years, the space will definitely be larger.  An easy way to determine if this is the case...is there a slight gap in the bonding that wasn't there when it was originally placed? 

Removing the bonding in between the teeth can be done carefully if natural tooth structure was not altered to place them.  Often times, tooth structure is changed, beveled and permanently removed to create a seamless transition from composite (the white filling material) to the natural tooth. If that is the case, removing the composites would warrant some sort of replacement.
Prepare yourself for an "enamel replacement" such as composite or porcelain to help you achieve your desired result.  If the composites are removed and the teeth are restored to their original state without a filling or porcelain, consider it a bonus.  
A straight forward consult and exam with a reputable cosmetic dentist should provide you with how realistic your goals may be.  

This really depends on the Dentist's technique while removing it. In my opinion, If there has been no other damage to the teeth since the bonding was done, and the dentist removes it carefully, being diligent not to remove any tooth structure, then the tooth structure and gap should be similar, so long as the teeth haven't drifted at all since the bonding was done. Hope this helps. 

Hello,

I recommended you go to one esthetic doctor to value your case and know what really don’t want it or if you want improve the work that you have, because I don’t suggest you removed it. 

There is a strong chance that when the bonding is removed that the gap may be bigger than it was originally. Also the tooth under the bonding will most likely be altered when the bonding is removed. I’d consider replacing the old bonding with new composite bonding or even better porcelain veneers