IRREGULARITIES OF THE DENTAL APPARATUS. 



723 



Inferior Ja'W. — The augmentation in 

 the number of incisor teeth in the lower 

 jaw appears to us, all things considered, a 

 less common than in the upper jaw. We 

 will cite, nevertheless, the doubling of a 

 left permanent intermediate, which we have 

 observed. 



The supernumerary teeth, which, to 

 our knowledge, are always of the second 

 dentition, do not seriously modify the char- 

 acters of the age; they are more or less 

 solidly implanted into the alveolus, nearly 

 ?i\vfSij?, displaced, and influence in a variable 

 manner the regularity of the incisive arcade. 



It is important to remark that they 

 differ from irregidar teeth or from stumps, 

 vestiges of deciduous milk-teeth broken by 

 the animal or during a surgical operation. 



Canines. — Our colleague, M. Ch. Mo- 

 rot, reports' having seen an adult horse 

 with seven canines ; the three supernumerary 

 (two above and one below) were situated be- Fig. 310.— One right supernumerary inter- 

 hind and very close to the normal canines. mediate, a, of the second dentition. 



Fig. 311.— a supernumerary intermediate, a, of the second dentition, viewed on its anterior face, 



A, and on its dental table, B. 



1 Ch. Morot, Recueil de m6decine v6t6rinaire (Bulletin de la Soci6t6 centrale de m6decine 

 v4t6rlnaire), 1888, p. 139. 



