ABSTRACT

In some teeth that have undergone root canal treatment, healing may not occur due to factors such as inadequate treatment, persistent or secondary microorganisms, extraradicular infections, foreign body reactions, or true cysts. In such cases, before considering tooth extraction or retrograde treatment, non-surgical root canal retreatment should be evaluated as a viable option. Root canal retreatment is generally time-consuming and requires effort; however, it represents a more conservative approach. Existing root canal fillings are removed using various techniques, and the canals are thoroughly cleaned, shaped, and refilled.
This case series presents the root canal retreatment procedures and one-year follow-up outcomes of five symptomatic patients who previously underwent root canal treatment.

KEYWORDS

Retreatment, apical surgery, case reports.

REFERENCES

1) Dioguardi M, Stellacci C, La Femina L, Spirito F, Sovereto D, Laneve E, vd. Comparison of Endodontic Failures between Nonsurgical Retreatment and Endodontic Surgery: Systematic Review and Meta-Analysis with Trial Sequential Analysis. Medicina (Mex). 2022;58(7):894.
2) Prada I, Mico-Munoz P, Giner-Lluesma T, Mico-Martinez P, Collado-Castellano N, Manzano-Saiz A. Influence of microbiology on endodontic failure. Literature review. Med Oral Patol Oral Cirugia Bucal. 2019;e364-72. 
3) Alghamdi F, Alhaddad AJ, Abuzinadah S. Healing of Periapical Lesions After Surgical Endodontic Retreatment: A Systematic Review. Cureus. 2020;12(2):e6916..
4) Abramovitz I, Better H, Shacham A, Shlomi B, Metzger Z. Case Selection for Apical Surgery: A Retrospective Evaluation of Associated Factors and Rational. J Endod. 2002;28(7):527-30.
5) Torabinejad M, Corr R, Handysides R, Shabahang S. Outcomes of Nonsurgical Retreatment and Endodontic Surgery: A Systematic Review. J Endod. 2009;35(7):930-7.
6) Baratto Filho F, Ferreira EL, Fariniuk LF. Efficiency of the 0.04 taper ProFile during the re-treatment of gutta-percha-filled root canals. Int Endod J. 2002;35(8):651-4.
7) Stabholz A, Friedman S. Endodontic retreatment—Case selection and technique. Part 2: Treatment planning for retreatment. J Endod. Aralık 1988;14(12):607-14.
8) Schirrmeister JF, Wrbas KT, Schneider FH, Altenburger MJ, Hellwig E. Effectiveness of a hand file and three nickel-titanium rotary instruments for removing gutta-percha in curved root canals during retreatment. Oral Surg Oral Med Oral Pathol Oral Radiol Endodontology. Nisan 2006;101(4):542-7.
9) Horvath SD, Altenburger MJ, Naumann M, Wolkewitz M, Schirrmeister JF. Cleanliness of dentinal tubules following gutta‐percha removal with and without solvents: a scanning electron microscopic study. Int Endod J. 2009;42(11):1032-8.
10) Scelza MFZ, Coil JM, Maciel ACDC, Oliveira LRL, Scelza P. Comparative sem evaluation of three solvents used in endodontic retreatment: an ex vivo study. J Appl Oral Sci. 2008;16(1):24-9.
11) Fariniuk LF, Westphalen VPD, Silva-Neto UXD, Carneiro E, Baratto Filho F, Fidel SR, vd. Efficacy of five rotary systems versus manual instrumentation during endodontic retreatment. Braz Dent J. 2011;22(4):294-8.
12) Wilcox LR, Krell KV, Madison S, Rittman B. Endodontic retreatment: Evaluation of gutta-percha and sealer removal and canal reinstrumentation. J Endod. 1987;13(9):453-7.
13) Tamse A, Unger U, Metzger Z, Rosenberg M. Gutta-percha solvents—a comparative study. J Endod. 1986;12(8):337-9.
14) Tandon J, Taneja S, Bhalla VK, Jain A. Evaluation of Bacterial Reduction at Various Stages of Endodontic Retreatment After Use of Different Disinfection Regimens: An In Vivo Study. Eur Endod J. 2022 Oct;7(3):210-216.
15) Paulo S, Abrantes AM, Xavier M, Brito AF, Teixo R, Coelho AS, vd. Microleakage Evaluation of Temporary Restorations Used in Endodontic Treatment—An Ex Vivo Study. J Funct Biomater. 2023;14(5):264.
16) Vijayran M, Chaudhary S, Manuja N, Kulkarni AU. Mineral trioxide aggregate (MTA) apexification: a novel approach for traumatised young immature permanent teeth. BMJ Case Rep. 2013 Jan 10;2013:bcr2012008094.
17) Kaşikçi S, Kolunsağ Özbek S. Re-Aestheticization in Discolored Anterior Teeth with Walking Bleach Technique: Case Series. J Int Dent Sci. 2023; 9(3): 157-163.
18) Temel B., Ermiş B. Evaluatıon of Effectıveness of Carbamıde Peroxıde Bleachıng Agent on Dıscolored Devıtal Teeth wıth L*A*B* Color Space System: Report of Cases. GÜ Diş Hek Fak Derg. 2008;25(2):39-44.
19) Atlas A, Grandini S, Martignoni M. Evidence-based treatment planning for the restoration of endodontically treated single teeth: importance of coronal seal, post vs no post, and indirect vs direct restoration. Quintessence Int. 2019;50(10):772-81.
20) Özden İ., Öveçoğlu HS. Devital beyazlatma uygulamalarının bağlantı ve mikrosızıntıya etkisi. 7tepeklinik. 2021;75-81.
21) Tuğut F., Ünal M., Kapdan A., Demir H., Doğan O. M. Composıte Restoratıon Supported wıth Glass Fıber Post in Case Complıcated Crown Fracture: Report of A Case and 18 Month Follow up. Atatürk Üniv. Diş Hek. Fak. Derg., 2009;19(3):207-212.