Dental and Medical Problems

Dent Med Probl
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Dental and Medical Problems

2019, vol. 56, nr 3, July-September, p. 279–283

doi: 10.17219/dmp/108596

Publication type: original article

Language: English

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Creative Commons BY-NC-ND 3.0 Open Access

Evaluation of the effect of the inversion filter on enhancing the visibility of the mandibular incisive canal in comparison with the original images

Ocena widoczności kanału przysiecznego żuchwy po zastosowaniu filtra inwersyjnego w odniesieniu do oryginalnego obrazowania radiologicznego

Farzaneh Ostovarrad1,A, Somayeh Nemati1,A, Abbas Shokri2,E, Elaheh Baghizadeh3,B, Zahra Yousefi1,D

1 Department of Oral and Maxillofacial Radiology, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran

2 Department of Oral and Maxillofacial Radiology, Dental Research Center, Faculty of Dentistry, Hamadan University of Medical Sciences, Iran

3 Department of Oral and Maxillofacial Radiology, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran


Background. The mandibular incisive canal (MIC) is a neural canal containing one of the lower branches of the inferior alveolar nerve, called the mandibular incisive nerve, which can get damaged and cause complications during the removal of bone from the interforaminal region.
Objectives. The aim of this study was to determine the effect of the inversion filter (IF) on improving the visibility of MIC as compared to the original images.
Material and Methods. In this retrospective, descriptive, analytical study, 343 samples of digital panoramic radiography were examined. The images were analyzed with and without IF. The frequency and confidence intervals (CIs) of identifying MIC were used to determine its visibility, both with IF and in the original images. Besides, the difference between the maximum and minimum diameters of the canal as well as the distance from MIC to the alveolar crest and to the mental foramen were examined. For statistical analysis, McNemar’s test and the paired t-test were used, and the concordance was calculated using the kappa coefficient.
Results. No significant differences were found in the prevalence of the incisive canal, or in its unilateral or bilateral visibility between the original and filtered radiography in this study (p = 0.42 and p = 0.67, respectively). The absolute values of the interval difference between MIC and the mental foramen, the maximum and minimum diameters of MIC, and the distance from MIC to the alveolar crest were statistically significant between the filtered and original radiography, although the difference was clinically unimportant.
Conclusion. The use of IF produced results similar to the original radiography; its application neither increased the clarity nor improved the visibility of the incisive canal.

Key words

mandible, software, digital dental radiography, mandibular nerve

Słowa kluczowe

żuchwa, oprogramowanie, cyfrowa radiografia stomatologiczna, nerw żuchwowy

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