Please share X rays or OPG so that the case can be read easily.

Fix the Foundation First: Placing a large bridge on loose teeth is highly risky. The bridge will put extra pressure on already weak foundations, which can cause the supporting teeth to fail completely. Root canals treat the nerves, but they do not fix bone loss or loose gum X-Rays are Essential:  you need a panoramic X-ray (OPG) to check how much bone support is left before making a final decision. Material Choice: If the teeth are stable enough, PFM (metal-ceramic)is durable and cost-effective, while all-ceramic (Zirconia) looks more natural. However, neither material will save the bridge if the underlying teeth are too loose.

Hello . I understand your concern. After going through your given history it is certain that the teeth are mobile( loose) but since you underwent RCT they can be preserved but requires clinical assessment. Next Ceramic are advised for aesthetic purposes but for your case i would suggest to go for PFM as it will provide you strength + aesthetic details. As you are planning for Removable denture for above teeth , make sure you maintain proper oral hygiene. I would instead suggest to go for Impant for Upper as well Lower teeth.

If supporting teeth are mobile....long term success is questionable It's better to share xray or opg to acess And accordingly if fixed is not suitable option Can go for removable RPD Or implants for missing teeth

Based on the information you’ve shared, if the supporting teeth are already mobile, a fixed bridge may place additional stress on those teeth and could worsen their mobility over time. I would recommend getting an X-ray (such as an OPG or IOPA) to assess the amount of bone support around the teeth. The decision to proceed with a fixed bridge depends largely on the degree of bone loss and the mobility of the supporting teeth. Please discuss these findings with your dentist to determine whether the supporting teeth are strong enough to withstand the forces of a bridge. If there is significant bone loss or mobility, other treatment options may provide a better long-term outcome.

Based on what you’ve described, if the supporting lower teeth are already loose, the long-term success of a fixed bridge depends on how strong those teeth actually are. Even if root canal treatment has been completed, a bridge can only last well if the supporting teeth have good bone support and minimal mobility. If the teeth are significantly loose due to gum disease or bone loss, placing a fixed PFM or ceramic bridge may put extra stress on them and they may loosen further over time. In such cases, treating the gum disease and stabilizing the teeth is important before deciding on a bridge. A removable denture is often a safer option when multiple teeth have poor support. In some cases, dental implants may also be considered if the bone condition and overall health are suitable.

Hello It would be great if you share an opg image / xray image