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Comparison of micro-computerized tomography and cone-beam computerized tomography in the detection of accessory canals in primary molars.

Acar B, Kamburoğlu K, Tatar İ, Arıkan V, Çelik HH, Yüksel S, Özen T - Imaging Sci Dent (2015)

Bottom Line: Differences between the gold standard and the observations made using the imaging methods were calculated using Spearman's rho correlation coefficient test.No statistically significant correlation was found between the CBCT findings and the stereomicroscopic images.However, CBCT is convenient for clinical use but may not be capable of adequately analyzing the internal anatomy of primary teeth.

View Article: PubMed Central - PubMed

Affiliation: Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.; Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

ABSTRACT

Purpose: This study was performed to compare the accuracy of micro-computed tomography (CT) and cone-beam computed tomography (CBCT) in detecting accessory canals in primary molars.

Materials and methods: Forty-one extracted human primary first and second molars were embedded in wax blocks and scanned using micro-CT and CBCT. After the images were taken, the samples were processed using a clearing technique and examined under a stereomicroscope in order to establish the gold standard for this study. The specimens were classified into three groups: maxillary molars, mandibular molars with three canals, and mandibular molars with four canals. Differences between the gold standard and the observations made using the imaging methods were calculated using Spearman's rho correlation coefficient test.

Results: The presence of accessory canals in micro-CT images of maxillary and mandibular root canals showed a statistically significant correlation with the stereomicroscopic images used as a gold standard. No statistically significant correlation was found between the CBCT findings and the stereomicroscopic images.

Conclusion: Although micro-CT is not suitable for clinical use, it provides more detailed information about minor anatomical structures. However, CBCT is convenient for clinical use but may not be capable of adequately analyzing the internal anatomy of primary teeth.

No MeSH data available.


Related in: MedlinePlus

A. The injected ink is visualized in the accessory canals under the stereomicroscope (10x). B. the main and accessory canals.
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Figure 3: A. The injected ink is visualized in the accessory canals under the stereomicroscope (10x). B. the main and accessory canals.

Mentions: Both the micro-CT and CBCT images were evaluated twice by a single observer using axial sections that were viewed on a 15.4 inch LCD monitor (TruBrite® WXGA, Toshiba Europe GmbH, Neuss, Germany) at 1280×800 screen resolution, and the number of accessory canals was recorded. The second set of evaluations was performed by the same observer after a two-week interval. Accessory canals were defined as any branches of the main pulp, regardless of communication with the external surface of the root; loops that divide from and then rejoin the main canal; and isthmuses, which are ramifications that are surrounded by two different main canals. The data obtained from examination under the stereomicroscope was regarded as the gold standard. Figures 1 and 2 show the reconstructed three-dimensional images of the accessory canals obtained by micro-CT and CBCT, respectively. The appearance of the accessory canals under the stereomicroscope when ink was injected is shown in Figure 3A, and Figure 3B contains a schematic diagram of the main and accessory canals.


Comparison of micro-computerized tomography and cone-beam computerized tomography in the detection of accessory canals in primary molars.

Acar B, Kamburoğlu K, Tatar İ, Arıkan V, Çelik HH, Yüksel S, Özen T - Imaging Sci Dent (2015)

A. The injected ink is visualized in the accessory canals under the stereomicroscope (10x). B. the main and accessory canals.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4697004&req=5

Figure 3: A. The injected ink is visualized in the accessory canals under the stereomicroscope (10x). B. the main and accessory canals.
Mentions: Both the micro-CT and CBCT images were evaluated twice by a single observer using axial sections that were viewed on a 15.4 inch LCD monitor (TruBrite® WXGA, Toshiba Europe GmbH, Neuss, Germany) at 1280×800 screen resolution, and the number of accessory canals was recorded. The second set of evaluations was performed by the same observer after a two-week interval. Accessory canals were defined as any branches of the main pulp, regardless of communication with the external surface of the root; loops that divide from and then rejoin the main canal; and isthmuses, which are ramifications that are surrounded by two different main canals. The data obtained from examination under the stereomicroscope was regarded as the gold standard. Figures 1 and 2 show the reconstructed three-dimensional images of the accessory canals obtained by micro-CT and CBCT, respectively. The appearance of the accessory canals under the stereomicroscope when ink was injected is shown in Figure 3A, and Figure 3B contains a schematic diagram of the main and accessory canals.

Bottom Line: Differences between the gold standard and the observations made using the imaging methods were calculated using Spearman's rho correlation coefficient test.No statistically significant correlation was found between the CBCT findings and the stereomicroscopic images.However, CBCT is convenient for clinical use but may not be capable of adequately analyzing the internal anatomy of primary teeth.

View Article: PubMed Central - PubMed

Affiliation: Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.; Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

ABSTRACT

Purpose: This study was performed to compare the accuracy of micro-computed tomography (CT) and cone-beam computed tomography (CBCT) in detecting accessory canals in primary molars.

Materials and methods: Forty-one extracted human primary first and second molars were embedded in wax blocks and scanned using micro-CT and CBCT. After the images were taken, the samples were processed using a clearing technique and examined under a stereomicroscope in order to establish the gold standard for this study. The specimens were classified into three groups: maxillary molars, mandibular molars with three canals, and mandibular molars with four canals. Differences between the gold standard and the observations made using the imaging methods were calculated using Spearman's rho correlation coefficient test.

Results: The presence of accessory canals in micro-CT images of maxillary and mandibular root canals showed a statistically significant correlation with the stereomicroscopic images used as a gold standard. No statistically significant correlation was found between the CBCT findings and the stereomicroscopic images.

Conclusion: Although micro-CT is not suitable for clinical use, it provides more detailed information about minor anatomical structures. However, CBCT is convenient for clinical use but may not be capable of adequately analyzing the internal anatomy of primary teeth.

No MeSH data available.


Related in: MedlinePlus