JIDAM
"An Official Journal of IDA - Madras
Branch" ©2019.
Department of Public Health Dentistryz,
Thai Moogambigai Dental College and Hospital Chennai, Tamilnadu
BACKGROUND: Proper diagnosis of impacted mandibular third
molars(IMTM)is essentialtoprevent injury atthesiteduring extraction
and aftermath surgical complications. OPG (Orthopantomograph) is
the most common diagnostic aid followed nowadays. However, since
the two dimensional imaging does not provide adequate details for
diagnosis, CBCT (Cone-Beam Computed Tomography) is preferred
in order to avoid such impediments as it provides higher quality
imaging and makes the extraction procedure much easier with its
ample detailing for diagnosis.
AIM: To compare preoperative radiography with cone-beam
computed tomography in the assessment of the relationship between
impacted mandibular third molar and mandibular canal.
METHOD: A systematic review of the records comparing panaromic
radiography with cone-beam computed tomography for the pre-
operative assessment of impacted mandibular third molar and its
relationship with the mandibular canal was done. A literature review
was performed using Medline, Pubmed, Science direct, and Cochrane.
Total of 383 articles appeared from various sources; all articles were
screened and 15 were related to the research question. This review was
reported according to the PRISMA guidelines.
RESULTS: With the 15 articles included in the systematic review as
qualitativesynthesis, thepresence of darkening ofroots and interruption
of the white line in OPG, as both separate findings and in association
with each other are effective in influencing the risk relationship
between IMTM and mandibular canal, which further certainly
require a 3D evaluation (CBCT) before performing the surgery.
CONCLUSON: CBCT imaging provides much a promising
evaluation in determining the relationship between impacted
mandibular third molars and mandibular canal which is more useful
than OPG imaging before the extraction to elude complications both
during and after the procedure.
CBCT, OPG, Extraction, Systematic Review
1 JIDAM/Volume:7/Issue:3/Pages 71 - 84/ July- Sept 2020