I'm simply an associate dentist. I go in, do my work, and go home. No stressors that owner-dentists have to deal with. I also get full benefits including employer matched 401k, a 403b, employer pays part of insurance premium, 30+ PTO per year, sponsored CE, scrubs provided by employers, and more. Hard to get all that in private practice.
MPH is not required, but in my experience, it got me several increased salary offers than those applying at the same places without an MPH. I do plan on stepping into a governmental role at some point in the future - if/when I no longer want to do clinical dentistry