BEST ANSWER 5 STARS, THANKS! Long story short, my dad just landed a new job & will be getting dental insurance included. We have never had dental insurance & my teeth need help.. I'm 23 & still hanging onto his medical insurance since the Obama health care passed.. Now he'll be getting dental at this new place, but probably moving an hour away (I will stay in the town we're in because of my job nearby). Can I use the Delta insurance even if NOT under same roof? I don't know much yet about how this stuff works.. ALSO, will I be able to hang onto the medical insurance when we don't live together?? I have pre-existing medical condition (crohn's disease) and take meds so it's important to have.. Thank you for the help! Greatly appreciated.