. The anatomy of the domestic animals . Veterinary anatomy. THE PERMANENT TEETH 401 surface presents two mfundibula, anterior and posterior. It slopes obliquely down- ward and outward, so that the buccal edge is prominent and sharp. Its average width, except at each end of the series, is about an inch (ca. cm ) The first and last teeth have three roots, the remainder four or three. As may be seen in Fig. 342, the individual teeth of the series ynvy in length In the seed- was 6,6 cm. at the anterior end and cm at the posterfor er^d '"''"'''" '^' *^° ™^'' j.„ ^^^ position
. The anatomy of the domestic animals . Veterinary anatomy. THE PERMANENT TEETH 401 surface presents two mfundibula, anterior and posterior. It slopes obliquely down- ward and outward, so that the buccal edge is prominent and sharp. Its average width, except at each end of the series, is about an inch (ca. cm ) The first and last teeth have three roots, the remainder four or three. As may be seen in Fig. 342, the individual teeth of the series ynvy in length In the seed- was 6,6 cm. at the anterior end and cm at the posterfor er^d '"''"'''" '^' *^° ™^'' j.„ ^^^ position of the embedded crowns and roots of the last four varies at different ages and m different subjects. Two factors in this variation may be noted. Ail ot these teeth are developed in the posterior part of the body of the maxilla. As gro^vth proceeds the teeth move forward, so that commonly only the last three, but sometimes also the third, project into the maxillary sinus. The second cause of variation is the fact that the anterior limit of the maxillary sinus may be at the extremity- of the facial crest, or about an inch beyond it. In the latter case the third tooth projects into the sinus.^ The mandibular or lower cheek teeth are im- planted in the rami of the mandible, forming two straight rows which diverge behind. The space be- tween the rows is considerably less than that separat- ing the upper teeth, especially in the middle of the series. The length of the lower teeth is about the same as that of the upper set. Their direction is Dentine Cement Enmnel - Cement. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sisson, Septimus, 1865-1924. Philadelphia ; London : W. B. Saunders Company
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