Los dientes translates into teeth and los labios translates into the lips. So this sentence refers to something that is inside my mouth, so the more logical answer is los dientes (teeth). On the other hand, están is the conjugation of the verb estar for the third person singular in the simple present. Finally:
<em>Los dientes </em><em>están adentro de mi boca</em>
The city of Cartagena, in Spanish as Cartagena de Indias is located on the northern coast of Colombia in the Caribbean Coast Region and it is the capital of the Bolívar Department.
