幼犬에 있어서 上顎의 外傷에 의한 永久齒의 發育 障害에 關한 一例(豫報) = A Case of Developmental Disturbance of Permanent Teeth Due to Trauma of Upper Jaw in Puppy(Preliminary Report)

다국어 초록 (Multilingual Abstract)

A clinical and radiographical observation has been made on developmental disturbance of permanent teeth due to trauma, which was contracted in six weeks after birth in a ten month old puppy.
The following are some of the results gained through the observation :
1 . Respecting deciduous teeth, it has been noted that central incisors were exfoliated a week after the contraction of trauma, and that intermediate and lateral incisors were exfoliated one month earlier than were in the normal case.
2. Macroscopical findings are that none of the permailent incisors in the upper jaw are visible with the left canine tooth buried in the soft tissue encept only 3 mm. of it while the right one is almost normal in its development, and that alveolar ridge of the upper jaw is not completely formed with the upper jaw outstandingly underdeveloped.
3. Radiographical findings are that none of permanent central incisors are noticed whereas intermediate incisors remain corn-sized radiopague (?) of enamel material, and that the development of lateral incisors and canines are almost normal although their eruption is misdirected. Also it has been observed that alveolar ridge is not normally formed with the nasal septum deviated to the left, and that incisive bone has developmental disturbance.