Final answer:
A dental abscess can involve the submandibular and submental triangles, which are areas in the head and neck region important in the spread of infections from dental origins.
Step-by-step explanation:
A person with a dental abscess may experience involvement in two anatomical triangles: the submandibular and the submental triangles. These triangles are located in the head and neck region and are of significant importance when dealing with infections stemming from dental issues. A dental abscess is an infection that can spread to the surrounding tissues and potentially enter these spaces, leading to more serious health complications if not treated promptly. The submandibular triangle is bound by the lower border of the mandible, the anterior and posterior bellies of the digastric muscle, and the body of the hyoid bone. The submental triangle is inferior to the chin, bound by the hyoid bone and the right and left anterior bellies of the digastric muscles. Infections in these triangles can spread to other areas, become systemic, or lead to airway obstruction, making it crucial to seek prompt dental and medical care.