Coronal Microleakage in Endodontically Treated Teeth: A Comparative Study of Sealers and Obturation Techniques

M. K.  Makki; R. J.  Abed; A. A.  Othman; M. F.  Saleh

doi:10.36371/port.2025.1.5

Authors

M. K. Makki Department of Conservative, College of Dentistry, Uruk University, Baghdad, Iraq.
R. J. Abed Department of Conservative, College of Dentistry, Uruk University, Baghdad, Iraq.
A. A. Othman Department of Oral Diagnosis, College of Dentistry, Uruk University, Baghdad, Iraq.
M. F. Saleh Oral Medicine Department, College of Dentistry, Mustansiriyah University, Baghdad, Iraq.

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Endodontic treatment aims to prevent reinfection of the root canal system by achieving a hermetic seal. However, microleakage remains a challenge, potentially leading to treatment failure. This study investigated the effects of sealer type and obturation technique on coronal microleakage in endodontically treated teeth. The purpose of this study was to compare the effectiveness of two sealers (Dorifill, AH26) and two obturation techniques (lateral condensation, warm gutta-percha) in preventing coronal microleakage. A total of 192 extracted human teeth were used in the study. Teeth were prepared and obturated, then stored in natural saliva for varying durations. Microleakage was assessed using dye penetration and measured under a microscope. The teeth were divided into four experimental groups based on storage time (1, 3, 7, or 30 days) and further into subgroups based on sealer and obturation technique. Canals were obturated with gutta-percha and either Dorifill or AH26 sealer, using lateral condensation or warm gutta-percha techniques. Obturated teeth were stored in natural saliva at 37°C for the designated experimental periods. All groups exhibited some degree of microleakage. Lateral condensation with AH26 consistently showed the highest leakage, while Dorifill and warm gutta-percha demonstrated better sealing ability. Microleakage increased with longer storage times for most groups. Lateral condensation with AH26 showed the highest mean leakage value at all time points (3.178mm at 1 day, 4.59mm at 3 days, 4.025mm at 7 days, and 4.12mm at 30 days). Dorifill and warm gutta-percha showed lower leakage values compared to AH26. ANOVA and LSD tests revealed significant differences between groups and time points. The study emphasizes the importance of sealer selection and obturation technique in reducing coronal microleakage, with sealer choice being a more critical factor. The mixture of Dorifill and warm gutta-percha appears promising. Further investigate is needed to validate these conclusions and improve long-term endodontic success

Keywords:

obturation technique, endodontically treated teeth,sealer type,Dorifill, AH26, lateral condensation, warm gutta-percha, Coronal microleakage

[1] Albuquerque, D., Kottoor, J., & Hammo, M. (2014). Endodontic and clinical considerations in the management of variable anatomy in mandibular premolars: A literature review. Biomed Research International, 2014, 512574. https://doi.org/10.1155/2014/512574

[2] Mostafavi, A. S., Rasoulzadehsheikh, M., Meraji, N., & Pourhajibagher, M. (2022). Bacterial microleakage in endodontically treated teeth following two methods of post space preparation at two-time intervals: An in vitro study. Journal of Indian Prosthodontic Society, 22, 233–239.

[3] Paulo, S., Abrantes, A. M., Xavier, M., Brito, A. F., Teixo, R., Coelho, A. S., et al. (2023). Microleakage evaluation of temporary restorations used in endodontic treatment—An ex vivo study. Journal of Functional Biomaterials, 14. https://doi.org/10.3390/jfb14050264

[4] Sritharan, A. (2002). Discuss that the coronal seal is more important than the apical seal for endodontic success. Australian Endodontic Journal, 28, 112–115.

[5] Lee, M.-H., Ha, J.-H., Jin, M.-U., Kim, Y.-K., & Kim, S.-K. (2013). Endodontic treatment of maxillary lateral incisors with anatomical variations. Restorative Dentistry and Endodontics, 38, 253–257.

[6] Jafari, F., & Jafari, S. (2017). Importance and methodologies of endodontic microleakage studies: A systematic review. Journal of Clinical and Experimental Dentistry, 9, e812–e819.

[7] Rathi, A., Chowdhry, P., Kaushik, M., Reddy, P., Roshni, & Mehra, N. (2018). Effect of different periodontal ligament simulating materials on the incidence of dentinal cracks during root canal preparation. Journal of Dental Research, Dental Clinics, Dental Prospects, 12, 196–200.

[8] Safai, P., Farzaneh, B., & Fekrazad, R. (2019). The effects of pressure in vitro on three methods of root canal obturation. Diving and Hyperbaric Medicine, 49, 16–20.

[9] Gerdolle, D. A., Mortier, E., & Droz, D. (2008). Microleakage and polymerization shrinkage of various polymer restorative materials. Journal of Dentistry for Children, 75, 125–133.

[10] Vula, V., Stavileci, M., Ajeti, N., Vula, V., Kuçi, A., & Meqa, K. (2022). Evaluation of apical leakage after root canal obturation with glass ionomer, resin, and zinc oxide eugenol sealers combined with Thermafil. Medical Science Monitor Basic Research, 28, e936675.

[11] Forough Reyhani, M., Ghasemi, N., Rahimi, S., Milani, A. S., & Omrani, E. (2016). Effect of different endodontic sealers on the push-out bond strength of fiber posts. Iranian Endodontic Journal, 11, 119–123.

[12] Madhuri, G. V., Varri, S., Bolla, N., Mandava, P., Akkala, L. S., & Shaik, J. (2016). Comparison of bond strength of different endodontic sealers to root dentin: An in vitro push-out test. Journal of Conservative Dentistry, 19, 461–464.

[13] Keles, A., Ahmetoglu, F., Ocak, M. S., Dayi, B., Bozkurt, A., & Orucoglu, H. (2014). Comparative analysis of three different filling techniques and the effects of experimental internal resorptive cavities on apical microleakage. European Journal of Dentistry, 8, 32–37.

[14] Pinto, J. C., Pivoto-João, M. M. B., Guerreiro-Tanomaru, J. M., Reyes-Carmona, J. F., & Tanomaru-Filho, M. (2023). Continuous wave of condensation improves the filling of curved canals: A micro-CT study. Odovtos - International Journal of Dental Sciences, 25(1), 305–315.

[15] Ehsani, M., Dehghani, A., Abesi, F., Khafri, S., & Ghadiri Dehkordi, S. (2014). Evaluation of apical micro-leakage of different endodontic sealers in the presence and absence of moisture. Journal of Dental Research, Dental Clinics, Dental Prospects, 8, 125–129.

[16] Samadi, F., Jaiswal, J., Saha, S., Garg, N., Chowdhary, S., & Samadi, F. (2014). A comparative evaluation of efficacy of different obturation techniques used in root canal treatment of anterior teeth: An in vitro study. International Journal of Clinical Pediatric Dentistry, 7, 1–5.

[17] Obaid, D. H., Hadi, R. J., Hassan, A. F. A., & Al-Taai, N. (2024). Herbal extract and white spot lesion: A review. Journal Port Science Research, 7(1), 1–5.

[18] Al-Azzawi, N. N., Hussein, M. K., & Khalaf, M. I. (2024). Verification of the association between IL6-174 G/C polymorphism in type 2 diabetes mellitus. Journal Port Science Research, 7(1), 36–42.

[19] Al-Shukry, A. H., Mansor, Z. E., & Abd Al-Hussein, N. A. (2024). Spectrophotometric determination of uric acid in samples of urine. Journal Port Science Research, 7(1), 22–29.

[20] Al-Jeboory, A. W., & Farid, Y. Y. (2021). Natural product chemistry research in Iraq. Journal Port Science Research, 4(1), 41–45.

[21] Al-Jawher, W. A. M., & Shaban, S. A. A. (2022). Clustering of medical images using multiwavelet transform and K-means algorithm. Journal Port Science Research, 5(1), 35–42.

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Makki , M. K. ., Abed , R. J. ., Othman , A. A. ., & Saleh , M. F. . (2025). Coronal Microleakage in Endodontically Treated Teeth: A Comparative Study of Sealers and Obturation Techniques. Journal Port Science Research, 8(1). https://doi.org/10.36371/port.2025.1.5