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==Introduction==
==Introduction==
Usually, as the permanent tooth erupts, '''resorption of the deciduous tooth root''' occurs and the deciduous tooth is lost.
Usually, as the permanent tooth erupts, '''resorption of the deciduous tooth root''' occurs and the deciduous tooth is lost.
:'''overcrowding of the dental arch''', and permanent teeth in abnormal locations leading to malocclusion
:'''overcrowding of the dental arch''', and permanent teeth in abnormal locations leading to malocclusion
:abnormal development of the roots and periodontal support around the permanent tooth, leading to '''early loss'''
:abnormal development of the roots and periodontal support around the permanent tooth, leading to '''early loss'''
:access of debris and bacteria to the tooth sockets and development of [[Periodontal Disease|'''periodontal disease''']] and infection
:accumulation of plaque leading to the development of [[Periodontal Disease|'''periodontal disease''']]
==Clinical Signs==
==Clinical Signs==
There will be additional teeth in the arcades, which appear crowded. The permanent teeth may be in an '''abnormal position''', and this may have lead to '''tooth, gingival or palatine trauma and damage'''.
There will be additional teeth in the arcades, which appear crowded. The permanent teeth may be in an '''abnormal position''', and this may have lead to '''tooth, gingival or palatine trauma and damage'''.
There is weakened periodontal attachment and '''periodontal disease''', often seen as [[gingivitis]], tartar and loosening of the tooth.
There is weakened periodontal attachment and '''periodontal disease''', often seen as [[gingivitis]], tartar and loosening of the tooth.
==Diagnosis==
==Diagnosis==
A thorough '''oral examination''' should enable the persistent deciduous teeth to be found.
A thorough '''oral examination''' should enable the persistent deciduous teeth to be found.
'''Radiographs''' help distinguish deciduous from permanent dentition, determine the location of the developing permanent tooth/teeth, and the integrity of the deciduous [[Enamel Organ#Root|tooth root]] structure.
'''Radiographs''' help distinguish deciduous from permanent dentition, determine the location of the developing permanent tooth/teeth, and the integrity of the deciduous [[Tooth - Anatomy & Physiology#Root|tooth root]] structure.
==Treatment==
==Treatment==
'''Dental radiographs''' should be taken post-extraction to confirm complete removal of the deciduous tooth and to document the condition of the permanent tooth.
'''Dental radiographs''' should be taken post-extraction to confirm complete removal of the deciduous tooth and to document the condition of the permanent tooth.
{{Learning
{{Learning
|Vetstream = [https://www.vetstream.com/canis/search?s=Persistent+Deciduous+Teeth Persistent Deciduous Teeth]
|flashcards = [[Veterinary Dentistry Q&A 03]]
|flashcards = [[Veterinary Dentistry Q&A 03]]
}}
}}
{{review}}
{{Lisa Milella reviewed
|date = August 4, 2014}}
{{Waltham}}
{{OpenPages}}
[[Category:Teeth - Developmental Pathology]][[Category:Oral Diseases - Dog]]
[[Category:Teeth - Developmental Pathology]][[Category:Oral Diseases - Dog]]
[[Category:Expert Review - Small Animal]]
[[Category:Developmental Dental Conditions]]
[[Category:Lisa Milella reviewed]]
[[Category:Waltham reviewed]]