J Korean Acad Conserv Dent.  2008 May;33(3):198-203. 10.5395/JKACD.2008.33.3.198.

Microleakage of endodontic temporary restorative materials under dynamic loading

• Jung DH
• Noh YS
• Lee HD
• Chang HS
• Ryu HW
• Min KS

• KMID: 2175982
• DOI: http://doi.org/10.5395/JKACD.2008.33.3.198

Abstract

The purpose of this study was to compare the sealing abilities of four endodontic temporary restorative materials using a methylene blue dye penetration test under dynamic loading. Standardized access cavities were prepared in forty-four intact human permanent molar teeth, and the cavities were restored with Caviton, MD-Temp, IRM, or ZOE. After thermocycling, an intermittent load of 98 N at 1 Hz was applied for 1,000 cycles to the long axis of the functional cusp of each of the teeth, which were immersed in a 1% methylene blue solution. The teeth were split in half, and the linear depth of dye penetration was evaluated according to the criteria. The results were analyzed using one-way ANOVA (p = 0.05) and Duncan's multiple range test. The results demonstrated that Caviton and MD-Temp showed significantly lower microleakage than IRM and ZOE. It was concluded that Caviton and MD-Temp exhibited better sealing ability than IRM and ZOE under dynamic loading.

Keyword

Microleakage; Temporary restorative material; Dynamic loading

MeSH Terms

Axis, Cervical Vertebra
Calcium Sulfate
Dental Cements
Humans
Methylene Blue
Molar
Root Canal Filling Materials
Tooth
Vinyl Compounds
Zinc Oxide
Calcium Sulfate
Dental Cements
Methylene Blue
Root Canal Filling Materials
Vinyl Compounds
Zinc Oxide

Figure

• 

  Figure 1 Cyclic Loading Machine composed of the loading head and specimen assembly.

• 

  Figure 2 Grade of dye penetration: 1, Dye penetration within DEJ; 2, Dye penetration within half of the pulp chamber; 3, Dye penetration over half of the pulp chamber; 4, Dye penetration over the pulp chamber.

• 

  Figure 3 Microleakage of each group under cycling loading. The superscripts with the same letters were not significantly different (p > 0.05).

• 

  Figure 4 Sectional view of dye penetration after dynamic loading.

Reference

1. Noguera AP, McDonald NJ. A comparative in vitro coronal microleakage study of new endodontic restorative materials. J Endod. 1990. 16:523–527.

2. Saunders WP, Saunders EM. Coronal leakage as a cause of failure in root canal therapy: a review. Endod Dent Traumatol. 1994. 10:105–108.

3. Delivanis PD, Chapman KA. Comparison and reliability of techniques for measuring leakage and marginal penetration. Oral Surg Oral Med Oral Pathol. 1982. 53:410–416.

4. Jacquot BM, Panighi MM, Steinmetz P, G'sell C. Evaluation of temporary restorations'microleakage by means of electrochemical impedance measurements. J Endod. 1996. 22:586–589.

5. Anderson RW, Powell BJ, Pashley DH. Microleakage of temporary restorations in complex endodontic access preparation. J Endod. 1989. 15:526–529.

6. Krakow AA, de Stoppelaar JD, Gron P. In vivo study of temporary filling materials used in endodontics in anterior teeth. Oral Surg Oral Med Oral Pathol. 1977. 43:615–620.

7. Mayer T, Eickholz P. Microleakage of temporary restorations after thermocycling and mechanical loading. J Endod. 1997. 23:320–322.

8. Liberman R, Ben-Amar A, Frayberg E, Abramovitz I, Metzger Z. Effect of repeated vertical loads on microleakage of IRM and calcium sulfate-based temporary fillings. J Endod. 2001. 27:724–729.

9. Cruz EV, Shigetani Y, Ishikawa K, Kota K, Iwaku M, Goodis HE. A laboratory study of coronal microleakage using four temporary restorative materials. Int Endod J. 2002. 35:315–320.

10. Jung SH, Min KS, Chang HS, Park SD, Kwon SN, Bae JM. Microleakage and fracture pat terns of teeth restored with different posts under dynamic loading. J Prosthet Dent. 2007. 98:270–276.

11. Webber RT, del Rio CE, Brady JM, Segall RO. Sealing quality of a temporary filling material. Oral Surg Oral Med Oral Pathol. 1978. 46:123–130.

12. Anderson RW, Powell BJ, Pashley DH. Microleakage of three temporary endodontic restorations. J Endod. 1988. 14:497–501.

13. Graf H. Bruxim. Dent Clin North Am. 1969. 13:659–665.

14. Anderson DJ. Measurements of stress in mastication 1. J Dent Res. 1956. 35:664–670.

15. Anderson DJ. Measurements of stress in mastication 2. J Dent Res. 1956. 35:671–673.

16. Vail MM, Steffel CL. Preference of temporary restorations and spacers: a survey of Diplomates of the American Board of Endodontists. J Endod. 2006. 32:513–515.

17. Widerman FH, Eames WB, Serene TP. The physical and biologic properties of Cavit. J Am Dent Assoc. 1971. 82:378–382.

18. Lee YC, Yang SF, Hwang YF, Chueh LH, Chung KH. Microleakage of endodontic temporary restorative materials. J Endod. 1993. 19:516–520.

19. Pai SF, Yang SF, Sue WL, Chueh LH, Rivera EM. Microleakage between endodontic temporary restorative materials placed at different times. J Endod. 1999. 25:453–456.