alexa Comparison of fracture sites and post lengths in longitudinal root fractures.
Dentistry

Dentistry

Dentistry

Author(s): Sugaya T, Nakatsuka M, Inoue K, Tanaka S, Miyaji H

Abstract Share this page

INTRODUCTION:

Comparing the epidemiology of fractures originating in the cervical and apical regions may help to understand the causes and risk of a vertical root fracture. We aimed to determine the frequency of vertical root fractures in different fracture sites and how the fracture site relates to fracture direction and post length.

METHODS:

Teeth diagnosed with a vertical root fracture were retrospectively surveyed for age and sex of the patient, type of tooth, a fracture region in the longitudinal axial direction, site of the fracture, and presence of a post. The fracture region in the longitudinal axial direction was classified as an incomplete fracture, complete fracture, and uncertain. Incomplete fractures were further classified into a fracture originating in the cervical region, a fracture originating in the midregion, and a fracture originating in the apical region. Posts were evaluated by loss of post and length of post.

RESULTS:

Fractures originating in the cervical and apical region occurred around the same frequency, whereas fractures originating in the midregion were extremely scarce. Of the fractures originating in the cervical region, 36.2% were in a mesial and/or distal site and 57.4% in a buccal and/or lingual site. Of the fractures originating in the apical region, 90.8% were in the buccal and/or lingual site. The number of cases of fractures originating in the apical region decreased with increased post length.

CONCLUSIONS:

Sites of fracture and post length differed greatly between fractures originating in the cervical region and the apical region, suggesting that risk factors for fractures originating in the cervical and apical regions are different.

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This article was published in J Endod. and referenced in Dentistry

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