I went to a dentist for Lumineers. He assured me he was Lumineers certified. I’m wondering if that is true. My Lumineers look very bulky. If he was certified, why do they look so bad? Kai P. – San Diego, CA Kai, The Lumineers certification doesn’t make dentists better at cosmetic dentistry. It’s just a … Why Are My Lumineers So Bulky?