Divide your dental work in batches and do them by year. Sometimes dentists say that a lot is required, but some can “wait”. My, reasonably responsible, paskened one of my teeth a trefah and proscribed an immediate tehiyas hamesim – 10 years ago. I paskened that when a sofek, shev velo taaseh is good enough. He (dentist) is still looking at him (the tooth) every year while thinking about yeshiva tuition he can exchange this tooth for.
