@article{ref1,
title="Descriptive classification of traumatic injuries to the teeth and supporting structures",
journal="Journal of the American Dental Association",
year="1981",
author="Johnson, R.",
volume="102",
number="2",
pages="195-197",
abstract="A summary of descriptively classifying traumatic injuries to the teeth and supporting structures was described. It is based on a description of the tooth structures involved, direction or level of crown or root fracture, the type and direction of displacement, and the effect on supporting structures.<p /><p>Language: en</p>",
language="en",
issn="0002-8177",
doi="",
url="http://dx.doi.org/"
}