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1. www.webmd.com › oral-health › braces-and-retainersDental Braces and Retainers: Types, Care, What to Expect - WebMD

   www.webmd.com › oral-health › braces-and-retainers

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   2024年3月22日 · These bands create pressure to help straighten and align your teeth. Your orthodontist may have you wear a device called headgear at night. It provides added pressure to help straighten your teeth ...

2. www.webmd.com › heart-disease › heart-failureHeart Failure and Life Expectancy - WebMD

   www.webmd.com › heart-disease › heart-failure

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   2024年3月27日 · And life expectancy is on the rise: Roughly half of people diagnosed today can expect to live at least 5 more years, compared with 41% in 2000, according to one study. Special calculators offer an ...