For me, my health care spending (including premiums, Part B costs, and dental, plus all other health care costs) have continued going up after Medicare at the same rate as before Medicare or higher.
If I didn't have Medicare I would be paying a lot more than I am, though. Some people find that as they grow older, their medical costs rise sharply and they need Medicare to keep their own health care spending reasonable. Others are eternally young (but that's not me). For me, dental implants have been a big expense, as well as frightfully expensive medications that my doctor is determined to prescribe for me.
IMO, unless you either have average to good teeth or else plan to not have implants, it would be smart not to count on getting lots of extra money for fun stuff when Medicare begins.
Year Annual cost
2010: $2,619 (first full year of retirement)
2011: $3,242
2012: $3,922
2013: $7,936 (began Medicare in June 2013)
2014: $4,972
2015: $8,113
2016: $11,953
2017: $14,975