ISSN 2398-2969      

Teeth: linguoversion of mandibular canine

icanis
Contributor(s):

Alexander M Reiter

Synonym(s): Neutrocclusion (class 1 malocclusion; Linguoversion


Introduction

  • One or both mandibular canine teeth erupting lingual or linguodistal to their normal position, causing injury to opposing maxillary teeth and tissues of the hard palate.
  • Often combined with mandibular distocclusion (mandibular brachygnathism or retrognathism); radiographic examination of endodontically treated teeth in 6 months and then once annually persistent deciduous mandibular canine teeth.
  • Common, especially in dolichocephalic (narrow- and long- muzzled) dogs such as Collies and occasionally other larger-sized breeds.
  • Dysfunctional; treatment essential to allow mouth to close without pain.

Pathogenesis

Etiology

  • Genetic and environmental factors.

Predisposing factors

General
  • Delayed shedding of decidous teeth (persistent decidous mandibular canine teeth) Teeth: retained deciduous.
  • Mandibular distocclusion.
  • Dolichocephalic breeds (narrow-and long-muzzled dogs that have decreased intermandibular width).

Pathophysiology

  • Linguoverted and linguodistoverted canine teeth can impinge on:
    • Opposing maxillary teeth, causing tooth wear due to tooth-on-tooth contact (attrition).
    • Opposing gingival tissues, causing gingival defects and periodontal pockets Periodontal pockets.
    • Opposing tissues of the hard palate, causing ulcerated depressions in palatal mucoperiosteum and - if not corrected- oronasal fistula formation Oronasal fistula.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

Other sources of information

  • Harvey C E, Emily PP (1993)Small Animal Dentistry.Mosby, St Louis, pp 266-296.
  • Classification of Dental Occlusion in Dogs by the American Veterinary Dental College (http://avdc.org/).

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