J Korean Acad Conserv Dent.  2006 Jan;31(1):66-71. 10.5395/JKACD.2006.31.1.066.

Influence of plugger penetration depth on the area of the canal space occupied by gutta-percha

• Lee YM
• So HY
• Kim YK
• Kim SK

• KMID: 2175788
• DOI: http://doi.org/10.5395/JKACD.2006.31.1.066

Abstract

To evaluate the ratio of gutta-percha area in the canal after canal obturation with Continuous Wave of Condensation Technique (CWCT) with varying depths of plugger penetration, forty root canals of extracted human teeth were prepared up to size 40 of 0.06 taper with ProFile(R). Canals of three groups were filled with CWCT with System B(TM) (Analytic Tech., USA) and different plugger penetration depths of 3, 5, or 7 mm from the apex. Canals of one group were filled with lateral condensation technique as a control. The filled teeth were cross-sectioned at 1, 2, and 3 mm levels from the apical foramen. The ratio of gutta-percha area in the canal was analyzed using Auto(R)Cad 2000. Data were analyzed with one-way ANOVA and Duncan's multiple range test. At all levels, higher gutta-percha area ratio was found with deeper plugger penetration depth in CWCT, and cold lateral condensation group showed higher ratio than group of plugger penetration to apical 7 mm in CWCT. At apical 1 mm and 2 mm levels, group of plugger penetration to apical 3 mm showed significantly higher gutta-percha area ratio than those of apical 7 mm and lateral condensation (p < 0.05). It is concluded therefore that, under the conditions of the present study, deeper plugger penetration depth results in more favorable and efficient obturation in CWCT.

Keyword

Plugger penetration; Gutta-percha area ratio; Continuous Wave of Condensation Technique; Canal obturation; System B

MeSH Terms

Dental Pulp Cavity
Gutta-Percha*
Humans
Tooth
Tooth Apex
Gutta-Percha

Figure

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  Figure 1 Cross-sectional view at each level, first letters are expression of each group and last letters are distances (mm) from apical construction to each cross-sectional level.

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  Figure 2 The ratio of gutta-percha area (%, mean ± S.D.) with different plugger penetration depth in Continuous Wave of Condensation Technique (CWCT). *significantly different (p < 0.05).

Reference

1. Cohen S, Burns RC. Pathways of the pulp. 2002. 8th ed. St. Louis: C. V. Mosby Co.;293–364.

2. Schilder H. Filling root canals in three dimensions. Dent Clin North Am. 1967. 11. 723–744.

3. Lee CQ, Chang Y, Cobb CM. Dimensional stability of thermosensitive gutta-percha. J Endod. 1997. 23:579–582.

4. Bowman CJ, Baumgartner JC. Gutta-percha obturation of lateral grooves and depressions. J Endod. 2002. 28:220–223.

5. Buchanan LS. The continuous wave of condensation technique : 'Centered' condensation of warm gutta percha in 12 seconds. Dent Today. 1996. 60–62. 64–67.

6. Yared GM, Bou Dagher FE. Influence of plugger penetration on the sealing ability of vertical condensation. J Endod. 1995. 21:152–153.

7. Kim HY, Kim SK. Influence of plugger penetration depth on the apical seal obturated by Continuous Wave of Condensation Technique. J Korean Acad Conserv Dent. 2001. 26:273–284.

8. Wu MK, van der Sluis LW, Wesselink PR. A preliminary study of the percentage of gutta-percha-filled area in the apical canal filled with vertically compacted warm gutta-percha. Int Endod J. 2002. 35:527–535.

9. Kwon OS, Kim SK. Apical fitness of non-standardized gutta-percha cones in simulated root canals prepared with rotary root canal instruments. J Korean Acad Conserv Dent. 2000. 25:390–398.

10. Ingle JI, Bakland LK. Endodontics. 1994. 4th ed. Philadelphia: Lea & Febiger;228–319.

11. Smith RS, Weller RN, Loushine RJ, Kimbrough WF. Effect of varying the depth of heat application on the adaptability of gutta-percha during warm vertical compaction. J Endod. 2000. 26:668–672.

12. Nguyen NT. Obturation of the root canal system. Pathways of the pulp. 1980. St. Louis: C. V. Mosby Co.;133–195.

13. Eguchi DS, Peters DD, Hollinger JO, Lorton L. A Comparison of the Area of the Canal Space Occupied by Gytta-percha Following Four Gutta-percha Obturation Techniques Using Procosol Sealer. J Endod. 1985. 11:166–175.

14. Marlin J, Schilder H. Physical properties of gutta-percha when subiected to heat and vetical condensation. Oral Surg Oral Med Oral Pathol. 1973. 36:872–879.

15. So HY, Kim SK. Influence of plugger penetration depth on the apical extrusion of root canal sealer in Continuous Wave of Condensation Technique. J Korean Acad Conserv Dent. 2004. 29:439–445.