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. 2024 Jan;27(1):82-86.
doi: 10.4103/JCDE.JCDE_224_23. Epub 2024 Jan 13.

Comparative analysis of novel heat-treated retreatment file system on the removal of obturating material using nano-computed tomography

Sruthi Sairaman  1 , Pradeep Solete  1 , Ganesh Jeevanandan  2 , S Delphine Priscilla Antony  1 , Sowmya Kavoor  1 , Hima Sandeep Adimulapu  1
Affiliations

Comparative analysis of novel heat-treated retreatment file system on the removal of obturating material using nano-computed tomography

Sruthi Sairaman et al. J Conserv Dent Endod. 2024 Jan.

Abstract

Introduction: The aim of nonsurgical retreatment is to remove the previous filling material followed by chemo-mechanical preparation of the canal to achieve proper disinfection of the root canal system. This is then followed by re-obturation. This study evaluates the time taken to retrieve the gutta-percha and the quantity of remaining filling material after retreatment with two different file systems. The quantity of remaining filling material was assessed using nano-computed tomography (CT) due to its increased accuracy.

Materials and methods: Forty extracted single-rooted teeth were split into two groups at random and decoronated and obturated at a standard root length of 16 mm. Solite RS3 (SRS-3) Retreatment and ProTaper Universal Retreatment (PTUR) systems were used to retrieve the gutta-percha after a preoperative nano-CT scan. Postoperative nano-CT scan was taken and both the scans were superimposed to quantify the remaining filling material. The time taken to remove gutta-percha was measured using a stopwatch. The statistical analysis comparing the two groups was conducted using the independent t-test.

Results: The quantitative analysis of remaining filling material using nano-CT showed no statistical difference between both the file systems used (P > 0.05). However, SRS-3 took significantly less time in the removal of gutta-percha (P < 0.05).

Conclusion: Hence, we can conclude that there is no significant difference in the amount of remaining filling material between both the file systems. However, time taken to remove the gutta-percha was lesser in SRS-3 compared to PTUR file system.

Keywords: Gutta-percha removal; Solite RS3; micro-computed tomography; nano-computed tomography; remaining filling material; retreatment.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
(a and b) The merged preoperative and postoperative nano computed tomography images of two different samples from Solite RS3 group. Green colour represents the filling material that has been removed while red colour refers to the remaining filling material remaining after retreatment
Figure 2
Figure 2
(a and b) The merged preoperative and postoperative nano computed tomography images of two different samples from ProTaper universal retreatment group. Green colour represents the filling material that has been removed while red colour refers to the remaining filling material remaining after retreatment
Figure 3
Figure 3
Represents the mean volume of remaining filling material in cubic mm after retreatment using the different file systems. X-axis represents the two different retreatment systems while Y-axis represents the mean volume of remaining filling material in cubic mm
See this image and copyright information in PMC

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