I Want A More Permanent Solution- Are Jaw Implants Right For Me? Or Is Radiesse Good? Will I Need Less Injections Over Time?

I've recently had Radiesse for my jaw area (for a square jaw look), and I love the results. But I was wondering if there's any truth to something I've read. I've read over time you need less injections with fillers. I'd prefer a permanent result, but I'm having a hard time finding out about jaw implants. If there is any truth to needing less injections over time I could live with, but if not would it be more practical to go with surgery? Any information would be wonderful, thank you.