LFP 221: Livestock Farm Practice (0+1)

DENTITION OF HORSE

Temporary dental formula

3 0 3 0 (Horse)

3 0 3 0

• Which means the canine as well as molars are not represented in temporary condition.

Permanent dental formula

3 1 3 (OR) 4 3

3 1 3 (OR) 4 3

• The variation in the number of premolar depends upon whether wolf teeth are present or not.

Eruption of teeth in horse

• 9 days – Central incisors (temporary)
• 9 weeks – Lateral incisors (temporary)
• 9 months – Corner incisors (temporary)

Wearing of emporary teeth

• 1 Year – Central incisor
• 1^1/2 Year – Lateral incisor
• 2 years – Corner incisor

Eruption of permanent teeth

• 2^1/2 Years – Central incisor
• 3^1/2 Years – Lateral incisor
• 4^1/2 years – Corner incisor

Disappeareance of dental mark

• 6^th Year – Central incisors
• 7^th Year – Lateral incisors - takes in lower jaw
• 8^th Year – Corner incisors
• 9^th Year – Central incisors
• 10^th Year – Lateral incisors - taken in upper jaw
• 11^th Year – Corner incisors
• When the dental mark disappears, the dental star reappears.

Galvayne's groove

• It is a depression on the labial surface of the corner incisors. This appears at the end of 10^th year.
• At the end of 15^th year the groove reaches ½ the teeth.
• At the end of 20 years the groove reaches the whole end of the teeth.
• At the end of 25 year the groove is present only in lower part.