Dental surgery notes.

  • Dowsett, Ernest B. (Ernest Blair)
Date:
1912
Catalogue details

Licence: In copyright

Credit: Dental surgery notes. Source: Wellcome Collection.

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    CHAPTER II ERUPTION OF THE TEETH A. Temporary Dentition. B. Permanent Dentition. A. ERUPTION OF THE TEMPORARY TEETH When a tooth is about to be erupted, active absorption of its crypt begins, particularly on its anterior surface, bone behind remaining for part of crypt for successional tooth. As soon as the crown has passed through the free orifice so formed, bone is deposited and loosely surrounds the neck of the tooth, keeping pace with the elongation of root. Front teeth are erupted first and then back ones ; for if all were erupted at same time, teeth could only be closed at the back of mouth. Hence “ proper mutual antagonism.” About 6th year temporary teeth all slightly separated from each other and pushed forward, possibly by increased size of crypts for permanent teeth. Theories of Eruption — 1. Lengthening of Root—evidence against:— a. Tooth with fully formed root may not be erupted. b. Canine travels greater distance than length of its roots. 2. Growth of Bone at Bottom of Socket—none demonstrable.
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