Root canal morphology of primary molars: a micro-computed tomography study

Root canal morphology of primary molars: a micro-computed tomography study

Aim This was to investigate the root canal morphology of primary molar teeth using micro-computed tomography. Methods Primary maxillary ( n  = 20) and mandibular ( n  = 20) molars were scanned at a resolution of 16.7 μm and analysed regarding the number, location, volume, area, structured model inde...

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Bibliographic Details
Published in:European archives of paediatric dentistry Vol. 15; no. 5; pp. 317 - 326
Main Authors: Fumes, A. C., Sousa-Neto, M. D., Leoni, G. B., Versiani, M. A., da Silva, L. A. B., da Silva, R. A. B., Consolaro, A.
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-10-2014
Springer Nature B.V
Subjects:
Anatomy, Cross-Sectional - methods
Area
Computed tomography
Dental Pulp Cavity - diagnostic imaging
Dentin - diagnostic imaging
Dentistry
Diameters
Endodontics
Humans
Image Processing, Computer-Assisted - methods
Imaging, Three-Dimensional - methods
Mandible - diagnostic imaging
Maxilla - diagnostic imaging
Medicine
Molar - diagnostic imaging
Morphology
Original Scientific Article
Quantitative analysis
Roundness
Software
Statistical analysis
Teeth
Thickness
Tomography
Tooth Apex - diagnostic imaging
Tooth Root - diagnostic imaging
Tooth, Deciduous - diagnostic imaging
Variance analysis
X-Ray Microtomography - methods
Ireland
Primary molars
Deciduous teeth
Micro-computed tomography
Dental pulp cavity
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Summary:Aim This was to investigate the root canal morphology of primary molar teeth using micro-computed tomography. Methods Primary maxillary ( n  = 20) and mandibular ( n  = 20) molars were scanned at a resolution of 16.7 μm and analysed regarding the number, location, volume, area, structured model index (SMI), area, roundness, diameters, and length of canals, as well as the thickness of dentine in the apical third. Data were statistically compared by using paired-sample t test, independent sample t test, and one-way analysis of variance with significance level set as 5 %. Results Overall, no statistical differences were found between the canals with respect to length, SMI, dentine thickness, area, roundness, and diameter ( p  > 0.05). A double canal system was observed in the mesial and mesio-buccal roots of the mandibular and maxillary molars, respectively. The thickness in the internal aspect of the roots was lower than in the external aspect. Cross-sectional evaluation of the roots in the apical third showed flat-shaped canals in the mandibular molars and ribbon- and oval-shaped canals in the maxillary molars. Conclusions External and internal anatomy of the primary first molars closely resemble the primary second molars. The reported data may help clinicians to obtain a thorough understanding of the morphological variations of root canals in primary molars to overcome problems related to shaping and cleaning procedures, allowing appropriate management strategies for root canal treatment.
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ISSN:1818-6300
1996-9805
DOI:10.1007/s40368-014-0117-0