My name is XXXXX XXXXX I'd be happy to answer your questions today.
If you paid in full under the agreement that you made with the dentist, and he refuses to complete the work, he is in breach of the agreement. That means that you have the option of suing for the cost of having the work completed by a third party. If he will not release the bridge to you, since you paid for it, you also have the option of suing for the cost of the bridge itself.
If the cost of those two things is less than $7,500, you can sue in Small Claims
Court. I'm not sure how much of what you paid is for work that was completed, so that may be an option. If you decide to have the third party install the bridge, then you'd only be suing for what they charged you, which may be a way of staying under the limit.
Another option is to have a local attorney send a demand letter, insisting that the dentist complete the work in order to avoid a lawsuit. If he believes that you will sue for reimbursement, he may be willing to hand over the bridge and pay you not to go to court. If you're going to try to negotiate, it would help to have estimates from a couple of other places so you know what they would charge you to install the bridge.
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