The Smile Space - Logo Concepts

Recently got assigned to create the Brand Identity for The Smile Space, a Dentistry Office based on Seattle. The client's brief described a young target patient demographic, of young adults aged 20-40. Their aesthetic is clean and modern.

The two final concepts to choose from present two different ideas: the first is a square representing Space, along with a Smile and the second is a Teeth with a smile on it, making it more clear on what the business is about. Which one do you think it's the best? 🤔