Equine Odontoclastic Tooth Resorption and Hypercementosis  

EOTRH is a disorder of the incisors (and possibly the canines) in the older horse. It is a slowly developing disorder in which some or all of the incisors are affected. The condition is described by a resorption (dissolution) of the tooth in combination with the formation of abnormal amounts of cement around the rootsThere is a form in which the teeth become very brittle (with a lot of gum reactionand a form in which the roots of the tooth become extremely thick (often with much less gum reaction). Of course, all mixed forms also occur 

Horses suffering from EOTRH are characterised by one or more of the symptoms listed below;  

 abnormal amount of calculus  

 Thickening of the incisors at root level  

 Ignited and reactive gumspossibly small fistulas (openings 

 Loose incisors  

When EOTRH has affected several teeth and/or has reached a more advanced stage, it becomes a very painful condition. These horses often eat with difficultysalivate a lot and stink from the mouth 

The exact cause of EOTRH is not yet known. It is an autoimmune disorder (the body attacks its own incisorsso to speakthat occurs more (but not exclusively) in older horses (+14yo) and is also more common in some breeds. The Icelandic appears to be particularly susceptible to this disease 

Oftenthe clinical signs are sufficient to make a diagnosis, and an X-ray examination of the incisors may clarify the extent of the condition. 

Treatment & Prognosis 
Unfortunatelyto this date, there is no drug treatment that can stop or cure the disease processExperimentallycorticosteroids seem to be able to slow down the process

Equide, in collaboration with Vetrident, has developed a Schizophyllan (mushroom) based nutritional supplement, which has been proven to have a positive effect on horses suffering from EOTRH. This supplement  aims to slow the progression of the disease and reduce the sensitivity of the incisors. Discover it HERE!

But in most cases, unfortunatelythe affected incisors need to be extractedOnce the bad teeth have been extracted, these horses can eat 'normallyagainHorses without incisors can eat amazingly well and can easily 'cut' off grass with the tongue and palate. 

Horses with all incisors removed will often leave the tip of their tongue hanging out of their mouth. For most horseshoweverthis does not have to be anything more than a beauty flaw. 

For more information about this disorder or other dental problems in horsesyou can always contact us. 



1 June 2022

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1 May 2022

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1 March 2022

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31 January 2022

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The nonsense and risks of creating so-called 'bitseats' in horses.

'Bitseats' or the (extreme) shortening and rounding of (part of) the first molars is neither harmless nor scientifically proven.

27 January 2022

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World Animal Day & The race to the bottom

About the use of unhealthy breeding mares in the equine reproduction.

4 October 2021

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Booklet: common bit and bridle related lesions in horses - bitfitting

New creation: an A4 booklet on the most common injuries related to bits and bridles and a lot of advice on correct bit-fitting.

20 September 2021

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Bit- and bridle-related injuries in the ridden horse - Part 2

The first part of this article was an overview of the normal anatomy and the most common 'bit-related injuries' in our horses. In addition to a good inspection of the oral cavity and diagnosis of these typical injuries, it is of course essential to be able to give the owner well-founded advice.

30 June 2021

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Bit- and bridle-related injuries in the ridden horse - Part 1

Bit- and bridle-related injuries (further abbreviated as "bit injuries") in our horses are common findings during routine dental checkups.

31 May 2021

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Tooth extraction in horses in 2021

Molar extractions 20 years ago were done almost exclusively under general anesthesia and via an (external) surgical approach. In 2021, this is still only necessary in very exceptional cases. As a result, the risk of complications has been drastically decreased (Caramello et al. 2020).

30 April 2021

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External trauma as a cause of equine dental developmental disorder

This case illustrates how a traumatic impact to the head of a young horse can lead to complex dental pathology. Horses in general - and young horses in group housing in particular - can easily injure themselves or each other. The impact of these traumas ranges from harmless to fatal

31 March 2021

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Extraction of a broken hook tooth

When a canine tooth is removed, a mucoperiostal flap is usually created, after which a portion of the surrounding alveolar bone is removed. When the tooth has been prepared free and sufficiently mobilized, it can be removed.

28 February 2021

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Developmental Disorders in Equine Dentition

Wouter Demey will be giving a lecture about Developmental Disorder in Equine Dentition, this 4th of June 2021 during the (virtual) 29th European Congress of Veterinary Dentistry - European Veterinary Dental Forum.

2 June 2021

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An elevator for the smallest horses at Equide!

Equide recently developed and had an elevator custom built to comfortably and safely treat the smallest of your ponies!

9 May 2021

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POSTER: Common bit and bridle related lesions in horses

Equide, in partnership with Vetrident (Dierenarts Stijn Teysen) and supported by the NCED , has recently published a poster (size A0) listing common bit and bridle related injuries.

25 April 2021

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Peripheral Caries

Peripheral caries are described as the loss of the cementum that forms the outer layer of a horse's teeth.

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Back to (less ab-)normal - Update Covid-19

Gelet op de exit-strategie van de overheid om de corona-maatregelen af te bouwen maakt ook Equide zich op om opnieuw een versnelling hoger te schakelen. Equide bleef deze hele periode beschikbaar voor spoedgevallen in onze eigen kliniek en in de partnerklinieken in Bel...

26 April 2020

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Corona (COVID-19) - Taking Responsibilties NOW

Due to the fast evolving pandemic caused by the new Corona virus and the associated disease (COVID-19) Equide has taken some important decisions:

1 March 2020

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Vetlife - ourlivesmattertoo - vetsforvets

Today I would like to mention a major issue in our profession; suicide. Not because I like to complain but because I'm seriously worried for my profession, my colleagues and their health. I recently read a post by an American veterinarian - Erin Wilkins - who just lost...

16 September 2019

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Upcoming projects

Although summer is still around you can already sense a little hint of fall in the air. This picture is taken at the entrance of our clinic this morning. We still feel highly privileged to be able to work in this magnificent setting.

1 August 2019

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Geriatric horse

Senior horses are more susceptible to a number of disorders and undergo (often physiological) changes. They therefore require extra care and management.

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A diastema (plural diastemata, also often called diastemas or diastases) is a space between 2 teeth. When we speak of diastema in horses we usually mean spaces between the molars of the horse.

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