Small black triangle... is bonding the way to go? What is the cheapest option? (Photo)

There is some risk of nicking adjacent teeth/enamel associated with any procedure involving a high speed dental drill being used in your mouth. Unless you have a good before photo of this area prior to this work being done it will be difficult to prove how it happened.  I would do some...

If the area of chipped tooth was small, and you are not a heavy grinder or clencher, then the bond should last. Your bite and your habits determines how long dental bonding will last. If polished well you should not worry about stains either. If the chipped tooth was large, then porcelain ...

If your dentist splinted your central incisors together in order to achieve an esthetic result and not for any other reason (such as stability or orthodontic retention etc..) then have a dentist unsplint the teeth and perform a normal "diastema closure" using filling material. It will look...