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THE ROLE OF MANDIBULAR THIRD MOLAR IN THE MANDIBULAR ANGLE FRACTURES

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¿À½Âȯ/Sung Hwan Oh

Abstract

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#ÃÊ·Ï#
Purpose : This study attempted to relate the incidence of fractures at the mandibular
angle with the presence and state of eruption of lower third molars, and to find out the
real risk factors for angle fractures in the states of lower third molars.
Materials and Methods : Medical records and radiographs of 395 patients with
mandibular fractures were retrospectively reviewed. The presence and states of third
molars were assessed for each patients and related to the occurrence of angle and other
mandibular fractures.
Results : Of 395 patients with mandibular fractures, 142 had angle fractures. The
incidence of angle fractures was found to be significantly greater when partial erupted
lower third molars were present and it had a definite role for risk factors for angle
fractures. But there were no clear relationship between the incidence of angle fractures
and states of without, fully erupted lower third molars.
Furthermore, the states of patial and unerupted lower third molar had an effect on bony
segment displacement.
Conclusions : This study provides clinical evidence to suggest that patial erupted third
molar teeth weaken the mandibular angle both quantitatively and qualitatively.

Å°¿öµå

Mandibular third molar; Angle fractures; Partial erupted tooth;

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KCI
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