Severe deep neck infections (DNIs) are potential complications of odontogenic pathology. DNIs affecting perimandibular space have a high prevalence and their etiologic and therapeutic aspects have been discussed. Early diagnosis and aggressive antimicrobial and surgical treatment are essential to successfully treat cervical abscesses and compromised upper airways of odontogenic origin. We report the case of life threatening pathology involving perimandibular, retropharyngeal spaces and bilateral pneumonia.