Odontogenic and oropharyngeal infections are relatively common in the cervicofacial region. In rare cases, odontogenic or peritonsillar abscesses may spread through the deep fascial cervical spaces and cause life-threatening complications. Odontogenic infection is the most common cause of deep neck infections and it accounts for 43% of the cases. Early diagnosis, immediate antibiotic treatment, and surgical drainage are the basis of therapeutic success. Deep neck infections are potentially life threatening complications if they are not diagnosed in time and treated quickly. This case report presents clinical, radiological features and treatment of the spread of abscesses through cervical spaces of an unusual case of deep neck infection that was caused by the secondary infection of the root remnants after extraction.