Nasal polyps are benign chronically inflamed tissue growths that are connected to an underlying mucous membrane with a thin or thick stem. Even though they occur anywhere on the mucous membrane of the nasal cavity and paranasal sinuses, they are most commonly found in the region of ostiomeatal complex, ostia of paranasal sinuses, and thin-walled ethmoid cells. They can occur as solitary entities or multiple ones, in which case the disease is called nasal polyposis. Nasal polyps cause mechanical obstruction of the upper airway which then becomes blocked. Nasal polyposis is often associated with other diseases such as bronchial asthma, allergic and non-allergic rhinitis, aspirin intolerance, and cystic fibrosis. They are diagnosed primarily through clinical examination and good medical history. Nasal polyposis therapy consists of conservative therapy in which a patient is prescribed topical corticosteroids, systemic corticosteroids, antibiotics, antihistamines, and decongestants. Alternatively, there is an option of surgical removal of nasal polyps if conservative therapy doesn't give satisfactory results. The surgical operation, called functional endoscopic sinus surgery, is used for the removal of the polyps. The surgery is minimally invasive or damaging to the surrounding anatomical structures and provides satisfactory restitution of the upper airway function. Patients with advanced polyposis often develop a parafunctional habit of mouth breathing because their nasal cavity is blocked with polyps. Mouth breathing pattern causes increased drying of the oral cavity and loss of the protective function of the saliva. If these conditions persist over longer time periods, there is an increased risk of developing tooth decay, periodontal disease, and orthodontic anomalies in children. Therefore, these patients require proper dental care.