- Author: Jane M Gould, MD, FAAP; Chief Editor: Russell W Steele, MD more...
A dentoalveolar abscess is an acute lesion characterized by localization of pus in the structures that surround the teeth. Most patients are treated easily with analgesia, antibiotics, drainage, and/or referral to a dentist or oral-maxillofacial surgeon. However, the physician should be aware of potential complications of simple dentoalveolar abscess.
The term dentoalveolar abscess comprises 3 distinct processes, as follows:
A periapical abscess that originates in the dental pulp and is usually secondary to dental caries is the most common dental abscess in children. Dental caries erode the protective layers of the tooth (ie, enamel, dentin) and allow bacteria to invade the pulp, producing a pulpitis. Pulpitis can progress to necrosis, with bacterial invasion of the alveolar bone, causing an abscess.
A periodontal abscess involves the supporting structures of the teeth (periodontal ligaments, alveolar bone).  This is the most common dental abscess in adults, but may occur in children with impaction of a foreign body in the gingiva.
Pericoronitis describes the infection of the gum flap (operculum) that overlies a partially erupted or impacted third molar.
Developmental and acquired conditions are associated with dental abscesses in childhood. Developmental conditions include abnormal morphology of the crown (eg, dens invaginatus, dens evaginatus) and abnormal structure of the dentine (eg, dentine dysplasia, dentinogenesis imperfecta, osteogenesis imperfecta, familial hypophosphatemia). Acquired conditions include pre-eruptive intracoronal resorption and mandibular infected buccal cyst.
Odontogenic infections are polymicrobial, with an average of 4-6 different causative bacteria. The dominant isolates are strictly anaerobic gram-negative rods and gram-positive cocci, in addition to facultative and microaerophilic streptococci. Anaerobic bacteria outnumber aerobes 2-3:1. In general, strictly anaerobic gram-negative rods are more pathogenic than facultative or strictly anaerobic gram-positive cocci.
Generally, a nonpathologic resident bacterium gains entry when the host's defenses are breached, rather than when a nontypical microorganism is introduced. The predominant species associated with dental abscess include Bacteroides, Fusobacterium, Actinomyces, Peptococcus,Peptostreptococcus, and Porphyromonas as well as Prevotella oralis, Prevotella melaninogenica, and Streptococcus viridans. Beta-lactamase producing organisms occur in approximately one third of dental abscesses.
The use of molecular techniques such as 16S rRNA gene sequencing and polymerase chain reaction (PCR) have identified difficult-to-culture organisms and expanded knowledge of the microflora associated with dental abscess. Examples include Treponema, Atopobium, Bulleidia extructa, and Mogibacterium species, as well as Cryptobacterium curtum.
Mortality is rare and is usually due to airway compromise. Morbidity relates to pain, probable tooth loss, and dehydration. See Complications.
No race predilection is observed.
No sex predilection is noted.
Dental abscess is rare in infants because abscesses do not form until teeth erupt. In children, periapical abscess is the most common type of dental abscess. This is because of the combination of poor hygiene, thinner enamel, and the primary dentition having more abundant blood supply, which allows for an increased inflammatory response. In adults, periodontal abscess is more common than periapical abscess.
[Guideline] Krebs KA, Clem DS 3rd. Guidelines for the management of patients with periodontal diseases. J Periodontol. 2006 Sep. 77(9):1607-11. [Medline].
Seow WK. Diagnosis and management of unusual dental abscesses in children. Aust Dent J. 2003 Sep. 48(3):156-68. [Medline].
Stefanopoulos PK, Kolokotronis AE. The clinical significance of anaerobic bacteria in acute orofacial odontogenic infections. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2004 Oct. 98(4):398-408. [Medline].
Brook I. Microbiology and management of endodontic infections in children. J Clin Pediatr Dent. 2003. 28(1):13-7. [Medline].
Robertson D, Smith AJ. The microbiology of the acute dental abscess. J Med Microbiol. 2009 Feb. 58(Pt 2):155-62. [Medline].
Delaney JE, Keels MA. Pediatric oral pathology. Soft tissue and periodontal conditions. Pediatr Clin North Am. 2000 Oct. 47(5):1125-47. [Medline].
Kellogg N,. Oral and dental aspects of child abuse and neglect. Pediatrics. 2005 Dec. 116(6):1565-8. [Medline].
Brauer HU. Unusual complications associated with third molar surgery: A systematic review. Quintessence Int. 2009 Jul-Aug. 40(7):565-72. [Medline].
Opitz D, Camerer C, Camerer DM, Raguse JD, Menneking H, Hoffmeister B, et al. Incidence and management of severe odontogenic infections-a retrospective analysis from 2004 to 2011. J Craniomaxillofac Surg. 2015 Mar. 43(2):285-9. [Medline].
[Guideline] American Academy of Pediatrics Committee on Nutrition. Fluoride supplementation for children:interim policy recommendations. Pediatrics. 1995. 95:777.
Ferrera PC, Busino LJ, Snyder HS. Uncommon complications of odontogenic infections. Am J Emerg Med. 1996 May. 14(3):317-22. [Medline].
Flynn TR, Shanti RM, Levi MH, et al. Severe odontogenic infections, part 1: prospective report. J Oral Maxillofac Surg. 2006 Jul. 64(7):1093-103. [Medline].
Gill Y, Scully C. The microbiology and management of acute dentoalveolar abscess: views of British oral and maxillofacial surgeons. Br J Oral Maxillofac Surg. 1988 Dec. 26(6):452-7. [Medline].
LeJeune HB, Amedee RG. A review of odontogenic infections. J La State Med Soc. 1994 Jun. 146(6):239-41. [Medline].
Lewis MA, MacFarlane TW, McGowan DA. A microbiological and clinical review of the acute dentoalveolar abscess. Br J Oral Maxillofac Surg. 1990 Dec. 28(6):359-66. [Medline].
Lewis MA, MacFarlane TW, McGowan DA. Antibiotic susceptibilities of bacteria isolated from acute dentoalveolar abscesses. J Antimicrob Chemother. 1989 Jan. 23(1):69-77. [Medline].
Pynn BR, Sands T, Pharoah MJ. Odontogenic infections: Part one. Anatomy and radiology. Oral Health. 1995 May. 85(5):7-10, 13-4, 17-8 passim. [Medline].
Sands T, Pynn BR, Katsikeris N. Odontogenic infections: Part two. Microbiology, antibiotics and management. Oral Health. 1995 Jun. 85(6):11-4, 17-21, 23 passim. [Medline].