Difference between revisions of "Dental Formula - Dog"

Revision as of 22:08, 28 July 2013

Overview

Dogs are toothless at birth. Their deciduous teeth are complete and functional within 2 months of birth in most breeds. Permanent teeth are complete and funtional by the end of the 7th month.

The formula for deciduous teeth: 2 (i3/3 c1/1 p3/3)

The formula for permanent teeth: 2 (I3/3 C1/1 P4/4 M2/3)

Canine teeth

The canine teeth are large, curved and laterally compressed. Their root is longer than their crown. They have a single root.

Dog Dentition - Copyright Nottingham 2008

Molars

The molars are broader than the premolars. The large flat surface is used for grinding.

Incisors

The incisors are tricuspid in the upper jaw and bicuspid in lower jaw. They have a single root.

Premolars

The premolars are irregular and closely-spaced. They are more complex and larger caudally.

Breed Differences

Eruption times differ between breeds so it is difficult to age dogs by their teeth. Brachiocephalic dogs do not possess all of the cheek teeth. They have fused roots and carnasial teeth (upper P4 and lower M1).

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@@ Line 3: / Line 3: @@
 [[Image:Aspinall Slide12.JPG|thumb|right|300px|<small>Image from [http://www.elsevierhealth.co.uk/veterinary-nursing/spe-60136/ Aspinall, The Complete Textbook of Veterinary Nursing], Elsevier Health Sciences, ''All rights reserved''</small>]]
-Dogs are toothless at birth. Their '''deciduous''' teeth are complete and functional within 2 months of birth. '''Permanent''' teeth are complete and funtional by the end of the 6th or 7th month.
+Dogs are toothless at birth. Their '''deciduous''' teeth are complete and functional within 2 months of birth in most breeds. '''Permanent''' teeth are complete and funtional by the end of the 7th month.
-The formula for '''deciduous''' teeth: 2 (I3/3 C1/1 P3/3)
+The formula for '''deciduous''' teeth: 2 (i3/3 c1/1 p3/3)
 The formula for '''permanent''' teeth: 2 (I3/3 C1/1 P4/4 M2/3)
-===Canines===
+===Canine teeth===
-The canines are large, curved and laterally compressed. Their [[Enamel Organ#Root|root]] is longer than their [[Enamel Organ#Crown|crown]]. They have a single [[Enamel Organ#Root|root]].
+The canine teeth are large, curved and laterally compressed. Their [[Enamel Organ#Root|root]] is longer than their [[Enamel Organ#Crown|crown]]. They have a single [[Enamel Organ#Root|root]].
 [[Image:Dog Dentition.jpg|thumb|right|300px|Dog Dentition - Copyright Nottingham 2008]]
@@ Line 18: / Line 18: @@
 ===Molars===
-The molars are broader than the premolars. The number of cusps is similar in all breeds, usually two or three.
+The molars are broader than the premolars. The large flat surface is used for grinding.
 ===Incisors===
-The incisors are '''tricuspid''' in the upper jaw and '''bicuspid''' in lower jaw. They are smaller rostrally and have a single [[Enamel Organ#Root|root]].
+The incisors are '''tricuspid''' in the upper jaw and '''bicuspid''' in lower jaw. They have a single [[Enamel Organ#Root|root]].
 ===Premolars===
-The premolars are irregular and closely-spaced. They are more complex and larger caudally. They have a discontinuous cutting edge on [[Enamel Organ#Crown|crowns]].
+The premolars are irregular and closely-spaced. They are more complex and larger caudally.
 ==Breed Differences==