Abstract
Tooth elongation of incisors and/or molars were found in 39 of 212 rabbits visited as clinical patients for 6 years in 1996-2001. The molar elongation with or without enamel spikes was observed in 24 of 39 rabbits. The rabbits with molar elongation showed non-specific clinical symptoms, such anorexia, reduction of feces, soft feces and reluctant to eat hard foods. As it is difficult to diagnose the molar elongation from the clinical symptom, oral examination should be required as a general physical examination. The prognosis was varied after the treatments of coronal reduction or odontoplasty. It is important to educate the owners that tooth elongation of rabbits often recurs after the treatments. Careful observation also needs to maintain the functional occlusion.