Reviewing these images is a long process if you go through the whole set. The idea is to notice all the differences and variability seen within each age. Then, as the age becomes greater, notice the increased variability. Also, note that some horses’ left and right sides are different, yielding a different age. The difference is caused by the horse’s tongue movement, jaw movement or both. The image data is the evidence I give for the horse’s age.
In the straight-on view: Most horses have a “relaxed space” where the teeth are not clenched tightly together. This is like you, right now, with your incisors apart.
In the straight-on view: Note, the white areas versus the stained areas. This indicates where the tongue has been able to reach and clean.
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4/22/2011 = 02yr 7mo TB M no tattoo2/11/2011 = 02yr 9mo TB M tattoo = O 20113/2/2011 = 02yr 8mo TB S tattoo = O 2011tattoo = O = 2011 = 02yr TB M4/23/2011 = 02yr 7mo TB G no tattoo2/13/2010 = 03yr 10mo Mini M2/11/2010 = 03yr 9mo TB M tattoo = N 20104/30/2010 = 03yr 7mo TB G tattoo = N 20104/20/2010 = 03yr 7mo TB G – tattoo = N=20103/17/2010 = 03yr 8mo TB G03yr TB S tattoo = N = 201003yr TB S N tattoo = 20103/30/2010 = 03yr 3mo3yr old2 and 3-year-olds – upper and lower central incisors (101/201/301/401) may or may not be permanent, but is more likely in the 3-year-olds.
3/3/2008 = 06yr 3mo WB G5/9/2008 = 06yr 1mo WB G4/12/2008 = 06yr Belgian WB G5/24/2007 = 06yr 5mo WB MFeb 14, 2007 = 06yr 6mo Appaloosa G2007= 06yr Hanovarian M5/25/2007 = K = 06yr 2mo TB G5/25/2007 = 06yr 2mo Trote y Galope G5/5/2007 = 06yr G WB6-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly.
4/25/2007 = 07yr old Gypsy Vanner mare4/29/2007 = 07yr Tattoo = K TB G (just castrated)2/18/2006 = 07yr 7 moFeb 26, 2006 = 07yr 6mo TB G tattoo = J2006 = 07yr tattoo = J TB G4/26/2006 = 07yr 4mo2/9/2006 = 07yr 5mo TB M6/2/2006 = 07yr 1mo WB G10/7/2006 = 07yr7-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly.
2/15/2006 = 8 yr old WB G10/23/2006 = 08yr WB G (born in Argentina)5/21/2006 = 08yr 1mo WB G5/13/2006 = 08yr 0 mo QH mare4/12/2006 = 08yr TB G who cribs. Tattoo = J4/15 2005 = 08yr 4mo tattoo = I TB G4/16/2005 = 08yr 4mo WB M7/3/2005 = 08yr 0mo Rocky Mountain Horse mare5/28/2005 = 08yr Hackney G4/15/2005 = 08yr TB G Tattoo I = 20058-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE the one horse with an unusual 201 upper central incisor. Surgery removed a deformed retained deciduous tooth and the permanent tooth is normal today. ALSO, NOTE the one horse where the table surface is level but the gum line slants.
3/11/2005 =09yr 2mo TB G Tattoo = I4/15/2005 09yr 1mo Oldenburg G4/24/2005 = 09yr WB G9yr 2/18/2004 = 09yr 9mo – Zangershire G5/13/2004 = 09yr 4mo5/15/2004 = 09yr 3mo M5/3/2004 = 09yr tattoo = H TB G2/27/2004 = 09yr 3mo WB G3/19/2004 = 09yr QH G9-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly.
Ollie 10yr Paint G5/20/2004 = 10yr WB G5/15/2004 = 10yr Morgan M – note the labial ware due to rubbing her 102 on the metal bars for more hay.2003 = 10yr tattoo = G TB M7/12/2003 = 10yr 1mo Fresian G2/18/2003 = 10yr 6mo QH G – lower incisors are in a straight line5/16/2003 = 10yr 2mo TB M3/23/2003 = 10yr QH G4/17 2003 = 10yr TB Irish Sporthorse M5/17/2003 = 10yr 0mo WB G – Missing upper incisors #101 & 20110/15/2002 = 10yr 5mo WB G10-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE one horse is missing the upper central incisors (1/201) with slight over eruption of the opposing lower incisors. ALSO, NOTE 2 horses have damaged upper central incisors.
5/15/2002 = 11yr 4moApril 27, 2002 = 11yr 4mo Mini G5/15/2002 = 11yr 3mo = F tattoo TB G11yr 2/23/2002 = 11yr 5mo TB M4/5/2002 = 11yr 4mo TB M4/10/2002 = 11yr TB M1/1/2002 = 11yr tattoo = F TB G1/24/2002 = 11yr 4mo TB G4/24/2002 = 11yr The jaw naturally mis-aligned11-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly.
4/24/2002 = 12yr 1mo QH G saw papers1/12/2001 = 12yr 8 mo 8 mo2/1/2001 = 12yr 7mo tattoo = E TB G3/20/2001 = 12yr 3mo Sunday, Melissa Buday3/30/2001 = 12yr QH M4/24/2001 = 12yr G grade12-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly.
6/6/2001 13yr Tennessee Walker G4/16/2000 = 13yr 6mo5/26/2000 = 13yr 3 mo3/21/2000 = 13yr 5mo TB G tattoo = D4/15/2000 = 13yr 4mo Morgan M12/5/2000 = 13yr 8mo WB G5/3/2000 = D 2000 = 13yr TB G1/7/1999 = 13yr 6mo Trot y Galope S5/11/2000 = 13yr 2mo WB G3/28/2000 = 13yr 3mo3/16/2000 = 13yr 3mo3/13/2000 = 13yr 2mo WB G – Horse A – relaxed incisors in a natural position13-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE 1 horse with a severe incisor angle makes aging difficult. ALSO NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums).
Charleston 14 yr Fresian Sport Horse Gtattoo = C = 14yr TB GMay 30, 1999 = 14yr Trakehner G4/24/1999 = 14yr 3mo TB M1/1/1999 = 14yr G TB tattoo = C = 199914-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums).
4/6/1998 = 15yr 6mo WB M4/24/1998 = 15yr 5mo M QH1998 15yr old5/16/1998 = 15yr 3mo Morgan S7/19/1998 = 15yr Hackney G2/12/1998 = B= 15yr 5mo6/28/1998 = 15yr Mini M4/1/1998 = 15yr QH M15-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (hypertrophy of the gum line, receding gums). ALSO, NOTE the parrot mouth on the 1 horse where the upper incisors have not been worn down level with the other incisors.
2/15/1998 = 16yr 4mo QH M3/21/1998 = 16yr 3mo Mini M5/28/1998 = 16yr 1mo Mini M2/10/1997 = 16yr 7mo QH G6/26/1997 = 16yr 2mo WB GMay 12, 1997 = 16yr Reg APH mare2/14/1997 = 16yr 5mo – Horses G (presumptive) – Early stage of EOTRH? hyperlpasia around canines, #404 early necrosis, bulbous appearance of incisors, and gum resorption around 201. No pain of difficulty in using incisors.2/22/1997 = 16yr 4mo5/15/1997 = 16yr1/15/1997 = 16yr 4mo WB G16-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums, grass not being cleaned).
Maggie 17yr QH M1/3/1996 = 17yr 6mo Paso Fino M17-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums).
5/27/1997 = 18yr TB G5/1/1995 = 18yr 4mo, Horse I – moderate EOTRH6/19/1995 = 18yr American Hanovarian M7/1/1995 = 18yr Columbian Trocha M18-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums). 1 horse is showing advanced EOTRH with bulbous enlargement of the underlying incisive bone, spreading of the incisors and the formation of a deep groove between the roots of the incisors.
4/20/1995 = 19yr 3 mo WB GBetty 19 yr App M05/06/1995 = 19yr WB G5/1/1994 = 19yr 6mo WB G7/31/1994 = 19yr WB G3/9/1994 = 19yr 3mo – Horse B – Bell’s palsy – tongue protrudes on right side and teeth are slightly out of alignment.3/2/1994 = 19yr 3mo M1/1/1994 = 19yr TB (Jan 1st) G Tatto = “X” 1994 + papers8/8/1994 = 19yr 10 mo M Appaloosa19-year-olds – Incisors in this view don’t change much until the late teens. Note the relaxed space seen in most straight-on views and over time, some angles move away from level and some upper and lower arcades don’t align perfectly. NOTE there are subtle signs of EOTRH starting (incisor tarter, hypertrophy of the gum line, receding gums).
4/23/1994 = 20yr 1 mo TB G3/11/1994 = 20yr old Arabian gelding. Note angled occlusal surface of incisors and the tongue lays on the left side.4/11/1993 = 20yr = W (partial) TB G – Horses G (presumptive) – Receding gum line, bulbous incisors, hypertrophy of gum line12/20/1992 = 20yr 6mo Trot y Galope G1/1/1993 = 20yr 6mo Mini G5/7/1993 = 20yr M Paint6/14/1993 = 20yr QH G – Horse B – 20 yr QH with relaxed incisors in a natural position5/5/1994 = 20yr 1 mo TB G tattoo = X20-year-olds – Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots). NOTE the damage from cribbing on the upper incisors of 1 horse.
Dreamer 21yr QH G10/2/1992 = 21yr DWB G7/4/1992 = 21yr WB G4/30/1992 = 21yr warmblood G3/13/1992 = 21yr 2mo Lg Pony G – Horse C with relaxed incisors in a natural position2/26/1993 = 21yr 4 mo TB G21-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
4/25/1992 = 22yr TB G6/25/1991 = 22yr 5mo WB G5/24/1991 = 22yr TB M4/15/1991 = 22yr Lipizaner G – Horse D with relaxed incisors in a natural position22-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
4/9/1991 = 23yr 2mo TB G tattoo = U1/5/1991 = 23yr 4mo Appendix QH Mare2/12/1991 = 23yr TB G4/14/1990 = 23yr 5mo Andalusian M4/7/1990 = 23yr 4mo WB M5/10/1990 = 23yr WB GTattoo = T = 1990 = 23yr Horse E had all his lower incisors and the start of EOTRH in 2010 (see the 1st pictures I have of him). He has no trouble chewing and is fed 8 quarts of grain a day plus hay and pasture. His weight loss since 2010 may be age or being moved to a new home 1000 miles away.5/16/1990 = 23yr 1mo TB G Oliver Tucker4/13/1990 = 23yr WB G3/30/1990 = 23yr QH M6/30/1991 = 23yr Hanovarian M23-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots). NOTE 1 horse has advanced EOTRH.
3/30/1990 = 24yr 2mo QH G saw papers1/1/1989 = 24yr TB G1/31/1989 = 24yr QH G – Horse E with relaxed incisors in a natural position –6/18/1989 = Tattoo = S = 24yr 11mo TB M24-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
1/1/1988 = 25yr 6mo TB G Tattoo = R25yr old5/1/1988 = 25yr QH M5/3/1989 = 25yr 1mo TB G tattoo = S25-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
5/5/1988 26yr QH G5/5/1987 = 26yr = Q TB G26-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
7/29/1986 = 27yr 3mo WB S – Presumptive EOTRH, Underbite4/18/1986 = 27yr 6 moMarch 23, 1986 = 27yr 6 mo TB M Tattoo = P4/14/1986 = 27yr 3 mo Dutch WB G3/31/1986 = 27yr EOTRH27-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots, tooth root exposure).
2/4/1986 = 28yr 6mo Arab M3/9/1986 = 28yr 3mo Fresian GJosh 28yr Arab G7/17/1985 = 28yr 3mo WB M28-year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
5/23/1984 = N = 29yr TB G30yr plus4/5/1980 = 34yr 4mo Arab G4/10/1983 = 31 yr 3 mo Arab G 30yr_plus5/16/1982 = 32yr Hackney M 30yr_plus37 year old born 1977 pony G 30yr_plus3/19/1980 QH G = 34 yr old 30yr_plus4/13/1981 = 32 yr QH G 30yr_plusJune 6, 1978 = 35y yr QH G 30yr_plus3/26/1981 = 32 yrs 30yr_plus – Horse F EOTRH29 and 30+ year-olds – the variations between horses are increasing with age. Uneven wear is more prevalent. Moderate signs of EOTRH are more common (receding gums, incisor tarter, inability to clean the labial surfaces, spreading of the incisors and groove formation of the gums between the roots).
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