Thankfully it’s exceedingly rare for DT brand implants to break after implantation, but there’s still some information available:
Some theoretical discussion:
Actual technical tests that DT has done to their implants to verify safety:
And there have been reports of implants from other brands using cheaper materials breaking, here’s one example:
In all cases, the general consensus seems to be that so long as you remove a broken implant relatively quickly, no long-term or major harm is likely to occur