Final answer:
Healthy gingiva attaches to the teeth just above the cervical line through what is known as the epithelial attachment.
Step-by-step explanation:
Healthy gingiva attaches to the teeth on the enamel surface just above the cervical line of the tooth. This is known as the epithelial attachment. The structure of a tooth includes the crown, covered with enamel, which is the hardest material in the body. Underneath the crown, a layer of dentin extends into the root of the tooth surrounding the innermost pulp cavity. The root of the tooth is covered with cementum, which works with the periodontal ligament to anchor the tooth in the jaw bone.