Can Dental composite bonding be placed over previous bonding?

Dental composite , or dental bonding can be added to a previous one, with ease, however there is particular protocols necessary, and the experience of the bonding dentist. The reason why your dental bonding is breaking, must be evaluated by your good dentist.It is possible due to your bite and other factors, including the size and the location where your dental bonding is placed.Dental veneers or porcelain veneers are stronger than composite dental bonding, specially in areas that require tearing the food, having said that, the bite is still an important factor to be evaluated. read the link below.Good luck.

yr dentist's  technique is right. no need to remove all bonding material from tooth. but i feel its due to undesired forces, so tell yr dentist to check for that.

What you need is a veneer, bondings are made out of resin, and will break if they put it in incised borders, and also will change color, so your solution sooner or later will be veneers, you can change shape, size and even color, they last a lot, and you will be very happy with them.