Yep... if he's got breath that peels paint and makes your eyes water, sounds like he needs another dental. My toothless wonder puppy Kara needed a big time dental (29 teeth extracted) when I first got her as a foster. But six months later, despite routine care, she needed another dental and lost six more. By contrast, my other two have pretty good teeth. If he's uncooperative for brushing, a medicated chew like CET Hextra might work. They work well for Honey and Nadia.