The Dental cosmos . the portions of the alveolus, which isintact. All of the white substance is os-seous tissue, and there appears to be nodestruction of any portion of it. Itshows a perfectly physiological jaw, al-though there is a great amount of calcu-lary deposit, and it is therefore a mostinteresting specimen to study in compari-son with pathological specimens. This next case, Fig. 2, was one of aloose bicuspid, and the patient was re-ferred to me as one suffering from pyor-rhea and demanding attention. The ra-diograph, while it shows an absolutelyhealthy condition of the osseous struc-tu
The Dental cosmos . the portions of the alveolus, which isintact. All of the white substance is os-seous tissue, and there appears to be nodestruction of any portion of it. Itshows a perfectly physiological jaw, al-though there is a great amount of calcu-lary deposit, and it is therefore a mostinteresting specimen to study in compari-son with pathological specimens. This next case, Fig. 2, was one of aloose bicuspid, and the patient was re-ferred to me as one suffering from pyor-rhea and demanding attention. The ra-diograph, while it shows an absolutelyhealthy condition of the osseous struc-ture, presents one pathological point: Acareful examination of the radiographshows that inflammation of the perice-mentum had existed, and that the loose-ness of this bicuspid was entirely due tolocal irritation brought about by a badlymade gold shell crown, the exciting causeof the inflammation in the peridental membrane. The removal of the pulp andthe proper crowning of the tooth effec-tually cured the case. Fig. Now I will show you in contradistinc-tion one of the ordinary types of pyor-rhea in which considerable destruction ofthe tissues had taken place. (Fig. 3.)Here is the neck of the tooth; the bone Fig. 3.
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