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Characterization of mandibular molar root and canal morphology using cone beam computed tomography and its variability in Belgian and Chilean population samples.

Torres A, Jacobs R, Lambrechts P, Brizuela C, Cabrera C, Concha G, Pedemonte ME - Imaging Sci Dent (2015)

Bottom Line: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile).The most common configurations in the mesial root of both molars were type V and type III.Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population.

View Article: PubMed Central - PubMed

Affiliation: Department of Imaging and Pathology, OMFS-IMPATH Research Group, Katholieke Universiteit Leuven, Leuven, Belgium.

ABSTRACT

Purpose: This study used cone-beam computed tomography (CBCT) to characterize mandibular molar root and canal morphology and its variability in Belgian and Chilean population samples.

Materials and methods: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile). Molars meeting the inclusion criteria were analyzed to determine (1) the number of roots; (2) the root canal configuration; (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar and (4) the presence of a C-shaped canal in the second mandibular molar. A descriptive analysis was performed. The association between national origin and the presence of a curved or C-shaped canal was evaluated using the chi-squared test.

Results: The most common configurations in the mesial root of both molars were type V and type III. In the distal root, type I canal configuration was the most common. Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population. The prevalence of C-shaped canals was 10% or less in both populations.

Conclusion: In cases of unclear or complex root and canal morphology in the mandibular molars, CBCT imaging might assist endodontic specialists in making an accurate diagnosis and in treatment planning.

No MeSH data available.


Classification of root canal configuration.1 Type I: a single canal extends from the pulp chamber to the apex. Type II: two separate canals leave the pulp chamber and join short of the apex to form one canal. Type III: one canal leaves the pulp chamber, divides into two within the root, and then merges to exit as one canal. Type IV: Two separate and distinct canals extend from the pulp chamber to the apex. Type V: one canal leaves the pulp chamber and divides short of the apex into two separate and distinct canals with separate apical foramina. Type VI: two separate canals leave the pulp chamber, merge in the body of the root, and re-divide short of the apex to exit as two distinct canals. Type VII: one canal leaves the pulp chamber, divides and then rejoins within the body of the root, and finally re-divides into two distinct canals short of the apex. Type VIII: three separate and distinct canals extend from the pulp chamber to the apex.
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Figure 1: Classification of root canal configuration.1 Type I: a single canal extends from the pulp chamber to the apex. Type II: two separate canals leave the pulp chamber and join short of the apex to form one canal. Type III: one canal leaves the pulp chamber, divides into two within the root, and then merges to exit as one canal. Type IV: Two separate and distinct canals extend from the pulp chamber to the apex. Type V: one canal leaves the pulp chamber and divides short of the apex into two separate and distinct canals with separate apical foramina. Type VI: two separate canals leave the pulp chamber, merge in the body of the root, and re-divide short of the apex to exit as two distinct canals. Type VII: one canal leaves the pulp chamber, divides and then rejoins within the body of the root, and finally re-divides into two distinct canals short of the apex. Type VIII: three separate and distinct canals extend from the pulp chamber to the apex.

Mentions: The teeth that met the inclusion criteria were evaluated to determine (1) the number of roots, (2) the root canal configuration according to Vertucci's classification1 (Fig. 1), (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar, and (4) the presence of a C-shaped canal in the mandibular second molar. The age and gender of the patients were also recorded.


Characterization of mandibular molar root and canal morphology using cone beam computed tomography and its variability in Belgian and Chilean population samples.

Torres A, Jacobs R, Lambrechts P, Brizuela C, Cabrera C, Concha G, Pedemonte ME - Imaging Sci Dent (2015)

Classification of root canal configuration.1 Type I: a single canal extends from the pulp chamber to the apex. Type II: two separate canals leave the pulp chamber and join short of the apex to form one canal. Type III: one canal leaves the pulp chamber, divides into two within the root, and then merges to exit as one canal. Type IV: Two separate and distinct canals extend from the pulp chamber to the apex. Type V: one canal leaves the pulp chamber and divides short of the apex into two separate and distinct canals with separate apical foramina. Type VI: two separate canals leave the pulp chamber, merge in the body of the root, and re-divide short of the apex to exit as two distinct canals. Type VII: one canal leaves the pulp chamber, divides and then rejoins within the body of the root, and finally re-divides into two distinct canals short of the apex. Type VIII: three separate and distinct canals extend from the pulp chamber to the apex.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4483626&req=5

Figure 1: Classification of root canal configuration.1 Type I: a single canal extends from the pulp chamber to the apex. Type II: two separate canals leave the pulp chamber and join short of the apex to form one canal. Type III: one canal leaves the pulp chamber, divides into two within the root, and then merges to exit as one canal. Type IV: Two separate and distinct canals extend from the pulp chamber to the apex. Type V: one canal leaves the pulp chamber and divides short of the apex into two separate and distinct canals with separate apical foramina. Type VI: two separate canals leave the pulp chamber, merge in the body of the root, and re-divide short of the apex to exit as two distinct canals. Type VII: one canal leaves the pulp chamber, divides and then rejoins within the body of the root, and finally re-divides into two distinct canals short of the apex. Type VIII: three separate and distinct canals extend from the pulp chamber to the apex.
Mentions: The teeth that met the inclusion criteria were evaluated to determine (1) the number of roots, (2) the root canal configuration according to Vertucci's classification1 (Fig. 1), (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar, and (4) the presence of a C-shaped canal in the mandibular second molar. The age and gender of the patients were also recorded.

Bottom Line: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile).The most common configurations in the mesial root of both molars were type V and type III.Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population.

View Article: PubMed Central - PubMed

Affiliation: Department of Imaging and Pathology, OMFS-IMPATH Research Group, Katholieke Universiteit Leuven, Leuven, Belgium.

ABSTRACT

Purpose: This study used cone-beam computed tomography (CBCT) to characterize mandibular molar root and canal morphology and its variability in Belgian and Chilean population samples.

Materials and methods: We analyzed the CBCT images of 515 mandibular molars (257 from Belgium and 258 from Chile). Molars meeting the inclusion criteria were analyzed to determine (1) the number of roots; (2) the root canal configuration; (3) the presence of a curved canal in the cross-sectional image of the distal root in the mandibular first molar and (4) the presence of a C-shaped canal in the second mandibular molar. A descriptive analysis was performed. The association between national origin and the presence of a curved or C-shaped canal was evaluated using the chi-squared test.

Results: The most common configurations in the mesial root of both molars were type V and type III. In the distal root, type I canal configuration was the most common. Curvature in the cross-sectional image was found in 25% of the distal canals of the mandibular first molars in the Belgian population, compared to 11% in the Chilean population. The prevalence of C-shaped canals was 10% or less in both populations.

Conclusion: In cases of unclear or complex root and canal morphology in the mandibular molars, CBCT imaging might assist endodontic specialists in making an accurate diagnosis and in treatment planning.

No MeSH data available.