Abstract
Aim To present the combined use of CBCT images and new #endodontic
software to identify and then facilitate the location and treatment of
a canal in an unusually placed second mesio-buccal root of a #maxillary left second molar. Summary A 45-year-old female was referred for root
canal treatment on her maxillary left second molar tooth (tooth 27). Due
to superimposition of the third molar and the position of the tooth
that
made conventional radiographs unhelpful, a pre-operative limited FOV,
Low-Dose Technology™ CBCT image was taken with an OP-300 Maxio™
device (Instrumentarium, Helsinki, Finland). The CBCT images were then
imported and analyzed using 3D Endo™ Software (Dentsply Sirona,
Wels bei Salzburg, Austria). Within the software, the canal orifices and
foramina were located and identified on the display, which allowed the
software to automatically reveal and measure the pathway of each canal,
which was traced and viewed in both frontal and #mesial perspectives.
The images revealed the presence of a separate second mesiobuccal root
that contained one canal. Root canal treatment was then performed
using the information derived from the software. The orifice of the
canal in the second MB root was located in an unusual position: 5.99 mm
palatally to the main MB canal and 7.57 mm medially from the #palatalcanal. An immediate post-operative limited FOV, low-dose #CBCT was
taken to assess the quality of the root filling. After one year the
tooth was asymptomatic and #radiographic examination revealed no sign of
#periapical pathosis.
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