Apologies for using Irish/Canadian dental numbering but here's the question: Terrible teeth with multiple fillings & root canal treatments. After many failed crowns I had 14 (upper rt 4) implanted 2yrs ago-final crown only 9 months ago. 15 was extracted & bridged with a cantilever off 16 but the 6 is heavily filled, missing palatal side & has a sinus to gum. Oral surgeon wants to extract 6 and bridge 16 to 14. I'm terrified about longevity & will require sinus graft. Is it best option?
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