Equine pulp horn numbering system

Question 1

According to Marshall R, Shaw DJ, Dixon PM.

in

A study of sub-occlusal secondary dentine thickness in overgrown equine cheek teeth. The Veterinary Journal. 2012;193(1):53-57.

Here is the pulp horn numbering system:

Answer 1

Here it is again!

Here are some tricks -

• mandibular teeth have a single continuously running line of enamel with no infundibulae
• Maxillary teeth have 2 infundibulae each, which are additional ‘irregular loops’ of enamel in the middle of the tooth, usually pictured with a little black spot in the middle (this is not a pulp horn.)
• We usually number the buccal pulp horns first, from front to back (1 and 2) Then the palatal/labial horns, also front to back. on mandibular teeth, 3, 4, 5 are in a line, front to back. On maxillary teeth, horn 5 is the palatal-most (between 3 and 4)
• only 06’s have a horn 6, it is at the ‘rostral most point of the tooth’
• maxillary 11’s have 2 small pulp horns at the very back, 7 and 8 (they have no 6) for a total of 7 pulp horns

mandibular 11’s have a horn 7 at the very back, for a total of 6 pulp horns (again no 6)

My best bet: Memorize the basic pattern for a maxillary and mandibular 09. for all 06’s add a pulp horn 6 at the most mesial extent. For a maxillary 11, add a 7 bucally and an 8 palatally For mandibular 11’s add a 7 at the most distal extent.

Sigh.