Complex sentence: The mandibular central incisor is the tooth located on the jaw, adjacent to the midline of the face and is mesial (toward the midline of the face) from both mandibular lateral incisors.
Split into simpler sentences: The mandibular central incisor is the tooth located on the jaw, adjacent to the midline of the face. It is mesial (toward the midline of the face) from both mandibular lateral incisors.