I wanted to replace my old fillings on middle of front teeth. Dentist made 1 tooth wider than other after new filling. (photo)

After putting new fillings between my 2 front teeth the dentist made one tooth wider than another changing shape of it.I didnt ask shape to be changed just filling to update and got uneven odd wide tooth.Before fillings it was normal even shaped.What to do with this?It's looking terrible and i wonder how it can happen with simple thing like filling. Is it difficult to fix it back to normal and which steps dentist should take?The filling was not too large

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