A comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar

Seul-Hee Park; Bong-Hwan Noh; Ho-Keel Hwang

doi:10.5395/JKACD.2004.29.6.541

Articles

Page Path: HOME > Restor Dent Endod > Volume 29(6); 2004 > Article

Original Article A comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar: Seul-Hee Park, Bong-Hwan Noh, Ho-Keel Hwang; 2004;29(6):-547.
DOI: https://doi.org/10.5395/JKACD.2004.29.6.541
Published online: November 30, 2004

Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.

Corresponding author: Ho-Keel Hwang. Department of Conservative Dentistry, College of Dentistry, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju, Korea, 501-759, Tel: 82-62-220-3846, Fax: 82-62-232-9064, rootcanal@hanmail.net

151 Views
0 Download
1 Crossref

prev next

Full Article

Download PDF

Abstract
REFERENCES

Abstract

The aim of this study was to compare the initial apical file (IAF) length between the mesio-buccanl and mesio-lingual canals of the mandibular molar before and after early coronal flaring. Fifty mandibular molars with complete apical formation and patent foramens were selected. After establishing the initial working length of the buccal and lingual canal of the mesial root using the Root-ZX, radiographs were taken for the working length with a 0.5 mm short of #15 K-file tip just visible at the foramen under a surgical microscope (OPMI 1-FC, Carl Zeiss Co. Germany) at 25X. After early coronal flaring using the K³ file, additional radiographs were taken using the same procedure. The root canal morphology and the difference in working length between the buccal and lingual canals were evaluated.

These results show that the difference in the length between the mesio-buccal and mesio-lingual canals of the mandibular molar was ≤ 0.5 mm. If one canal has a correct working length for the mesial root of the mandibular molar, it can be used effectively for measuring the working length of another canal when the files are superimposed or loosening. In addition, the measured the working length after early coronal flaring is much more reasonable because the difference in the length between the mesio-buccal and mesio-lingual canals can be reduced.
Keywords: Early coronal flaring; Working length

Figure 1

The device for taking a standard radiograph at the same position

Figure 2

Analysis of root canal type

Figure 3

Average working length of initial apical files

Table 1

Average working length of initial apical files (unit: mm)

^*: Significantly different at p < 0.05 (paired t test)

Table 2

Average working length according to the root canal types (Unit: mm)

^*Significantly different at p < 0.05 (parired t test)

REFERENCES

1. Lim SS. Clinical Endodontics. 1999;2nd ed. Seoul: Dentistry Magine; 122-127.
2. Ingle J, Bakland L. Endodontics. 1985;3th ed. Philadelphia: Lea & Febiger; 36-37.
3. Kuttler Y. Microcopic investigation of root apexes. J Am Dent Assoc. 1955;50: 544-552.PubMed
4. Altman M. Apical root anatomy of human maxillary central incisors. Oral Surg. 1970;30: 694-699.PubMed
5. Burch JG, Hulen S. The relationship of the apical foramen to the anatomic apex of the tooth root. Oral Surg. 1972;34: 262-267.Article PubMed
6. Burch JG, Hulen S. The relationship of the apical foramen to the anatomic apex of the tooth root. Oral Surg. 1972;34: 262-268.Article PubMed
7. Green D. A stereomicroscopic study of the root apices of 400 maxillary and mandibular posterior teeth. Oral Surg. 1956;9: 1224-1232.PubMed
8. Green D. Stereomicroscopic study of 700 root apices of maxillary and mandibular posterior teeth. Oral Surg. 1960;13: 728-733.Article PubMed
9. Gutierrez JH, et al. Apical foraminal openings in human teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995;79: 769-777.Article PubMed
10. Morfis A, et al. Study of the apices of human permanent teeth with the use of a scanning electron microscope. Oral Surg Oral Med Oral Pathol. 1994;77: 172-176.Article PubMed
11. Goldman M, et al. Reliability of radiographic interpretations. Oral Surg Oral Med Oral Pathol. 1974;38: 287-293.PubMed
12. Cohen S, Burns R. Pathways of the pulp. 1988;7th ed. St. Louis: CV Mosby; 248-251.
13. Wheeler RC. Dental Anatomy, Physiology and Occlusion. 1974;5th ed. W.B. Saunders Co; 267-297.
14. Grossman L. Endodontic practice. 1988;11th ed. Philadelphia: Lea & Febiger; 169-173.
15. Ingle JI, Bakland LK. Endodontics. 2002;5th ed. Philadelphia: Lea & Febiger; 462-469.
16. Cohen S, Burns R. Pathways of the pulp. 2002;8th ed. St. Louis: CV Mosby; 210-217.
17. Weine FS. Endodontic therapy. 1982;3rd ed. St. Louis: Mosby Co; 209.
18. Woelfel JG, Scheid RC. Dental Anatomy. 2002;1st ed. philadelphia: Williams & Wilkins; 97-107.
19. Pineda F, Kuttler Y. Mesiodistal and buccolingual roentgenographic investigation of 7,275 root canals. Oral Surg. 1972;33: 101-110.Article PubMed
20. Green D, Brooklyn NY. Double canals in single roots. Oral Surg. 1973;35: 689-696.Article PubMed
21. Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg. 1984;58: 589-599.Article PubMed
22. Blayney JR. Some factors in root canal treatment. J Dent Res. 1924;11: 840.
23. Groove CJ. Faculty technic in investigations of the apices of pulpless teeth. J Am Dent Assoc. 1926;13: 746.
24. Katz A, et al. Tooth length determination; A review. Oral Surg. 1991;72: 238-242.Article PubMed
25. Kobayashi C, Suda H. New Electronic canal length measuring device on the ratio method. J Endod. 1994;20: 111-114.PubMed
26. Cohen S, Burns R. Pathways of the pulp. 1994;6th ed. St. Louis: CV Mosby; 179-218.
27. Hwang HG, Shin YG, Kim PS. A study on the accuracy of the root-zx according to the various conditions of root canals. J Korean Acad Conserv Dent. 2000;25: 474-482.
28. Hulsmann M, et al. An improved technique for the evaluation of root canal preparation. J Endod. 1999;25: 599-602.Article PubMed
29. Hwang HG, Shin YG. The effectiveness of obturating techniques in sealing isthmuses. J Korean Acad Conserv Dent. 2001;26: 499-506.

Tables & Figures

Figure 1

The device for taking a standard radiograph at the same position

Figure 2

Analysis of root canal type

Figure 3

Average working length of initial apical files

Table 1

Average working length of initial apical files (unit: mm)

^*: Significantly different at p < 0.05 (paired t test)

Table 2

Average working length according to the root canal types (Unit: mm)

^*Significantly different at p < 0.05 (parired t test)

REFERENCES

1. Lim SS. Clinical Endodontics. 1999;2nd ed. Seoul: Dentistry Magine; 122-127.
2. Ingle J, Bakland L. Endodontics. 1985;3th ed. Philadelphia: Lea & Febiger; 36-37.
3. Kuttler Y. Microcopic investigation of root apexes. J Am Dent Assoc. 1955;50: 544-552.PubMed
4. Altman M. Apical root anatomy of human maxillary central incisors. Oral Surg. 1970;30: 694-699.PubMed
5. Burch JG, Hulen S. The relationship of the apical foramen to the anatomic apex of the tooth root. Oral Surg. 1972;34: 262-267.Article PubMed
6. Burch JG, Hulen S. The relationship of the apical foramen to the anatomic apex of the tooth root. Oral Surg. 1972;34: 262-268.Article PubMed
7. Green D. A stereomicroscopic study of the root apices of 400 maxillary and mandibular posterior teeth. Oral Surg. 1956;9: 1224-1232.PubMed
8. Green D. Stereomicroscopic study of 700 root apices of maxillary and mandibular posterior teeth. Oral Surg. 1960;13: 728-733.Article PubMed
9. Gutierrez JH, et al. Apical foraminal openings in human teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995;79: 769-777.Article PubMed
10. Morfis A, et al. Study of the apices of human permanent teeth with the use of a scanning electron microscope. Oral Surg Oral Med Oral Pathol. 1994;77: 172-176.Article PubMed
11. Goldman M, et al. Reliability of radiographic interpretations. Oral Surg Oral Med Oral Pathol. 1974;38: 287-293.PubMed
12. Cohen S, Burns R. Pathways of the pulp. 1988;7th ed. St. Louis: CV Mosby; 248-251.
13. Wheeler RC. Dental Anatomy, Physiology and Occlusion. 1974;5th ed. W.B. Saunders Co; 267-297.
14. Grossman L. Endodontic practice. 1988;11th ed. Philadelphia: Lea & Febiger; 169-173.
15. Ingle JI, Bakland LK. Endodontics. 2002;5th ed. Philadelphia: Lea & Febiger; 462-469.
16. Cohen S, Burns R. Pathways of the pulp. 2002;8th ed. St. Louis: CV Mosby; 210-217.
17. Weine FS. Endodontic therapy. 1982;3rd ed. St. Louis: Mosby Co; 209.
18. Woelfel JG, Scheid RC. Dental Anatomy. 2002;1st ed. philadelphia: Williams & Wilkins; 97-107.
19. Pineda F, Kuttler Y. Mesiodistal and buccolingual roentgenographic investigation of 7,275 root canals. Oral Surg. 1972;33: 101-110.Article PubMed
20. Green D, Brooklyn NY. Double canals in single roots. Oral Surg. 1973;35: 689-696.Article PubMed
21. Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg. 1984;58: 589-599.Article PubMed
22. Blayney JR. Some factors in root canal treatment. J Dent Res. 1924;11: 840.
23. Groove CJ. Faculty technic in investigations of the apices of pulpless teeth. J Am Dent Assoc. 1926;13: 746.
24. Katz A, et al. Tooth length determination; A review. Oral Surg. 1991;72: 238-242.Article PubMed
25. Kobayashi C, Suda H. New Electronic canal length measuring device on the ratio method. J Endod. 1994;20: 111-114.PubMed
26. Cohen S, Burns R. Pathways of the pulp. 1994;6th ed. St. Louis: CV Mosby; 179-218.
27. Hwang HG, Shin YG, Kim PS. A study on the accuracy of the root-zx according to the various conditions of root canals. J Korean Acad Conserv Dent. 2000;25: 474-482.
28. Hulsmann M, et al. An improved technique for the evaluation of root canal preparation. J Endod. 1999;25: 599-602.Article PubMed
29. Hwang HG, Shin YG. The effectiveness of obturating techniques in sealing isthmuses. J Korean Acad Conserv Dent. 2001;26: 499-506.

Citations

Citations to this article as recorded by

Study of endodontic working length of Korean posterior teeth
Jeong-Yeob Kim, Sang-Hoon Lee, Gwang-Hee Lee, Sang-Hyuk Park
Journal of Korean Academy of Conservative Dentistry.2010; 35(6): 429. CrossRef

CanvasJS.com

ePub Link

Cite

CITE: export Copy Download Format; Close

Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

Format:

RIS — For EndNote, ProCite, RefWorks, and most other reference management software
BibTeX — For JabRef, BibDesk, and other BibTeX-specific software

Include:

Citation for the content below
Citation and abstract for the content below

A comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar

J Korean Acad Conserv Dent. 2004;29(6):541-547. Published online November 30, 2004

DOI: https://doi.org/10.5395/JKACD.2004.29.6.541

XML Download

Figure

A comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar

Figure 1 The device for taking a standard radiograph at the same position

Figure 2 Analysis of root canal type

Figure 3 Average working length of initial apical files

Figure 1

Figure 2

Figure 3

A comparison of the length between mesio-buccal and mesio-lingual canals of the mandibular molar

Table 1

Average working length of initial apical files (unit: mm)

^*: Significantly different at p < 0.05 (paired t test)

Table 2

Average working length according to the root canal types (Unit: mm)

^*Significantly different at p < 0.05 (parired t test)

Table 1 Average working length of initial apical files (unit: mm)

^*: Significantly different at p < 0.05 (paired t test)

Table 2 Average working length according to the root canal types (Unit: mm)

^*Significantly different at p < 0.05 (parired t test)