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. 2020 Nov 12:2020:8896740.
doi: 10.1155/2020/8896740. eCollection 2020.

Comparison of MTA, CEM Cement, and Biodentine as Coronal Plug during Internal Bleaching: An In Vitro Study

Paridokht Zarean  1 , Parichehr Zarean  1 , Arash Ravaghi  2 , Maryam Zare Jahromi  3 , Mitra Sadrameli  4   5
Affiliations

Comparison of MTA, CEM Cement, and Biodentine as Coronal Plug during Internal Bleaching: An In Vitro Study

Paridokht Zarean et al. Int J Dent. .

Abstract

Background: Internal bleaching is a choice of treatment in discolored endodontically treated teeth. Cervical root resorption is one of the important complications of this treatment. A suggested procedure to prevent this type of resorption is using a coronal barrier under the bleaching materials. The aim of the study was to compare the microleakage of mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement, and Biodentine.

Materials and methods: In this in vitro study, a total of 60 single canal incisors were included. They were randomly divided into three experimental groups (n = 16), one positive control group (n = 6), and one negative control group (n = 6). Coronal portion of the canals in the experimental groups was sealed with 3 mm of MTA, CEM cement, or Biodentine as a coronal barrier. After 3 days, specimens were bleached. A fresh Enterococcus faecalis suspension was added to the samples. The culture tubes were observed for 45 days, and the daily turbidity was recorded. Statistical analysis was accomplished by the Kaplan-Meier test and SPSS 22.

Results: All positive samples showed turbidity, whereas none of the negative samples allowed bacterial leakage. Results showed no significant difference between MTA, CEM cement, and Biodentine groups. (P value = 0.304, 0.695, and 0.217). The bacterial microleakage for the two groups also did not show significant differences.

Conclusions: CEM cement and Biodentine showed promising results as coronal plug, and clinical studies are needed to test these materials with MTA for avoiding microleakage in internal bleaching treatment.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
Sealing the gap between sample and tube.
Figure 2
Figure 2
Compressing the upper lacuna (included samples) into lower lacuna (included medium) under sterile conditions until 2-3 mm of the apical areas were placed in BHIB medium.
Figure 3
Figure 3
Culturing turbidity solutions in blood agar medium.
Figure 4
Figure 4
Rate of microleakage over time in experimental groups (338 × 190 mm) (96 × 96 DPI).
Figure 5
Figure 5
Hazard function.
See this image and copyright information in PMC

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