J Korean Acad Conserv Dent.  2010 Sep;35(5):335-343. 10.5395/JKACD.2010.35.5.335.

Effect of moisture on sealing ability of root canal filling with different types of sealer through the glucose penetration model

• Jang JA
• Kim HL
• Her MJ
• Lee KW
• Yu MK

• KMID: 2176431
• DOI: http://doi.org/10.5395/JKACD.2010.35.5.335

Abstract

OBJECTIVES
To compared the effect of different levels of moisture of root canal on the sealing ability after filling with four different types of sealer.
MATERIALS AND METHODS
Single-rooted teeth (n = 90) instrumented to and apical size of 0.06 / 45 were randomly assigned to 12 experimental groups (n = 7 per group), positive/negative control groups (n = 3 per group). The teeth of the experimental groups (a. DRY; b. PAPER POINT DRY; c. WET) were obturated with sealer (Group 1-3: Sealapex; Group 4-6: AH plus; Group 7-9: Tubuli-seal; Group 10-12: EndoRez) and warm vertical compaction method. After 7 days in 37degrees C, 100% humidity, the coronal-to-apical microleakage was evaluated quantitatively using a glucose leakage model. The leaked glucose concentration was measured with spectrophotometer at 1, 3, 7, 14, 21, and 30 days. Data were recorded ad mmol/L and statistically analysed with the two-way ANOVA and Duncan test (p = 0.05).
RESULTS
Throughout the experimental period Tubuli-seal/WET (Group 9) showed the highest mean cumulative glucose penetration (178.75 mmol/L), whereas AH plus/DRY (Group 4) had the least (20.78 mmol/L).
CONCLUSIONS
The results of this study demonstrated that the moisture condition of root canals at the time of obturation and the type of sealer that was used had a significant effect on leakage and sealing ability. Thus drying procedure according to sealer types is a critical step and should not be missed in endodontic treatment.

Keyword

AH plus; EndoRez; Moisture; Sealapex; Sealing ability; Tubuli-seal

MeSH Terms

Calcium Hydroxide
Composite Resins
Dental Pulp Cavity
Epoxy Resins
Glucose
Humidity
Root Canal Filling Materials
Salicylates
Tooth
Calcium Hydroxide
Composite Resins
Epoxy Resins
Glucose
Root Canal Filling Materials
Salicylates

Figure

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  Figure 1 Glucose leakage model.

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  Figure 2 Leakage of positive and negative control groups.

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  Figure 3 Glucose microleakage of experimental groups. a, Sealapex groups; b, AH plus groups; c, Tubuliseal groups; d, EndoRez groups.

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