I stopped kissing my husband because he stopped caring about his dental hygiene

When we met he knew one of the most important things to me health wise was good dental hygiene; flossing regularly, brushing 3x times a day and going to the dentist twice a year. After we got married I guess he said screw it. He legit only brushes his teeth once a week and when he does I noticed blood when he spits out the water. He saw me watching, got embarrassed and asked me not to look. I quietly walked away and researched how I could help him. I found a natural mouthwash to help with bleeding gums but it means nothing if he doesn't brush his teeth and floss like he's supposed to. I bought it, gave him instructions but he only uses it once a week when he's supposed to use it twice a day. He's a kisser, tongue down my throat and all but I can't bring myself to kiss him. I didn't say anything to him for months because I didn't want to hurt his feelings but he's gotten mad at me time and time again because I won't kiss him especially during sex so I finally said something. I told him he has poor dental hygiene and really bad breath his response was why bother doing what's necessary for his teeth when myself and his mom have problems with our teeth all the time. The only problems I ever have are my wisdom teeth. I had all 4 that gave me problems and needed to be pulled I got two left that needs to go but I have to wait until I have our baby plus in previous pregnancies I didn't listen to my doctor when she suggested I take extra calcium supplements because my growing baby was taking all my calcium. After I had our son one of my molars broke off it was an easy repair I take calcium supplements now and I still practice good dental hygiene. I didn't give him an ultimatum but I told him I couldn't bring myself to kiss him like he wants because of his poor dental hygiene. He gets defensive everytime when this could all be so simple, brush your goddamn teeth, floss and use the mouthwash if you want to kiss so damn bad. I know I'm not wrong and if he wasn't my husband this would be a deal breaker but he is my husband so what other approaches can I take? 😂😔