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References

Patel N, Gemmel A, Bonsor S, Edwards D. Re-endodontic treatment. Part 1: why and when?. Dent Update. 2022; 50:652-658
Dawood A, Patel S. The Dental Practicality Index – assessing the restorability of teeth. Br Dent J. 2017; 222:755-758 https://doi.org/10.1038/sj.bdj.2017.447
Tifooni A, Al-Nuaimi N, Dawood A Validation of the effectiveness of the Dental Practicality Index in predicting the outcome of root canal retreatments. Int Endod J. 2019; 52:1403-1409 https://doi.org/10.1111/iej.13142
Abbott PV. Assessing restored teeth with pulp and periapical diseases for the presence of cracks, caries and marginal breakdown. Aust Dent J. 2004; 49:33-39 https://doi.org/10.1111/j.1834-7819.2004.tb00047.x
Magne P, Spreafico RC. Deep margin elevation: a paradigm shift. Am J Esthet Dent. 2012; 2:86-96
Skupien JA, Luz MS, Pereira-Cenci T. Ferrule effect: a meta-analysis. JDR Clin Trans Res. 2016; 1:31-39 https://doi.org/10.1177/2380084416636606
Ng YL, Mann V, Gulabivala K. A prospective study of the factors affecting outcomes of nonsurgical root canal treatment: part 1: periapical health. Int Endod J. 2011; 44:583-609 https://doi.org/10.1111/j.1365-2591.2011.01872.x
Gutierrez JH, Aguayo P. Apical foraminal openings in human teeth. Number and location. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995; 79:769-777 https://doi.org/10.1016/s1079-2104(05)80315-4
Patel N, Edwards D. When to consider the use of CBCT in endodontics. Dent Update. 2021; 48:932-941
Abbott PV. Incidence of root fractures and methods used for post removal. Int Endod J. 2002; 35:63-67 https://doi.org/10.1046/j.1365-2591.2002.00457.x
Mullally BH, Ahmed M. Periodontal signs and symptoms associated with vertical root fracture. Dent Update. 2000; 27:356-360 https://doi.org/10.12968/denu.2000.27.7.356
Krell KV, Caplan DJ. 12-month success of cracked teeth treated with orthograde root canal treatment. J Endod. 2018; 44:543-548 https://doi.org/10.1016/j.joen.2017.12.025
Edwards D, Bailey O, Stone SJ, Duncan H. How is carious pulp exposure and symptomatic irreversible pulpitis managed in UK primary dental care?. Int Endod J. 2021; 54:2256-2275 https://doi.org/10.1111/iej.13628
Patel S, Brown J, Semper M European Society of Endodontology position statement: use of cone beam computed tomography in endodontics: European Society of Endodontology (ESE) developed by. Int Endod J. 2019; 52:1675-1678 https://doi.org/10.1111/iej.13187
AAE Guide to Clinical Endodontics. 2013. http//www.aae.org/specialty/clinical-resources/guide-clinical-endodontics/ (accessed September 2023)
Plotino G, Grande NM, Isufi A Fracture strength of endodontically treated teeth with different access cavity designs. J Endod. 2017; 43:995-1000 https://doi.org/10.1016/j.joen.2017.01.022
Krasner P, Rankow HJ. Anatomy of the pulp-chamber floor. J Endod. 2004; 30:5-16 https://doi.org/10.1097/00004770-200401000–00002
Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984; 58:589-599 https://doi.org/10.1016/0030-4220(84)90085-9
Sundqvist G, Figdor D, Persson S, Sjögren U. Microbiologic analysis of teeth with failed endodontic treatment and the outcome of conservative re-treatment. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1998; 85:86-93 https://doi.org/10.1016/s1079-2104(98)90404-8
Ng YL, Mann V, Gulabivala K. Outcome of secondary root canal treatment: a systematic review of the literature. Int Endod J. 2008; 41:1026-1046 https://doi.org/10.1111/j.1365-2591.2008.01484.x
Sjögren U, Figdor D, Persson S, Sundqvist G. Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis. Int Endod J. 1997; 30:297-306 https://doi.org/10.1046/j.1365-2591.1997.00092.x
Gulabivala K, Patel B, Evans G, Ng YL. Effects of mechanical and chemical procedures on root canal surfaces. Endod Topics. 2005; 10:103-122
Byström A, Sundqvist G. Bacteriologic evaluation of the efficacy of mechanical root canal instrumentation in endodontic therapy. Scand J Dent Res. 1981; 89:321-328 https://doi.org/10.1111/j.1600-0722.1981.tb01689.x
Bonsor SJ. Disinfection of the root canal system: what should the protocol be?. Dent Update. 2021; 48:836-844
Stojicic S, Zivkovic S, Qian W Tissue dissolution by sodium hypochlorite: effect of concentration, temperature, agitation, and surfactant. J Endod. 2010; 36:1558-1562 https://doi.org/10.1016/j.joen.2010.06.021
Metzger ZV, Solomonov M, Kfir A. The role of mechanical instrumentation in the cleaning of root canals. Endod Topics. 2013; 29:87-109
Al-Jadaa A, Paqué F, Attin T, Zehnder M. Acoustic hypochlorite activation in simulated curved canals. J Endod. 2009; 35:1408-1411 https://doi.org/10.1016/j.joen.2009.07.007
Konstantinidi E, Psimma Z, Chávez de Paz LE, Boutsioukis C. Apical negative pressure irrigation versus syringe irrigation: a systematic review of cleaning and disinfection of the root canal system. Int Endod J. 2017; 50:1034-1054 https://doi.org/10.1111/iej.12725
Bystrom A, Claesson R, Sundqvist G. The antibacterial effect of camphorated paramonochlorophenol, camphorated phenol and calcium hydroxide in the treatment of infected root canals. Endod Dent Traumatol. 1985; 1:170-175 https://doi.org/10.1111/j.1600-9657.1985.tb00652.x
Trope M, Delano EO, Ørstavik D. Endodontic treatment of teeth with apical periodontitis: single vs. multivisit treatment. J Endod. 1999; 25:345-350 https://doi.org/10.1016/S0099-2399(06)81169-6
Ørstavik D, Kerekes K, Molven O. Effects of extensive apical reaming and calcium hydroxide dressing on bacterial infection during treatment of apical periodontitis: a pilot study. Int Endod J. 1991; 24:1-7 https://doi.org/10.1111/j.1365-2591.1991.tb00863.x
Abbott PV. Medicaments: aids to success in endodontics. Part 1. A review of the literature. Aust Dent J. 1990; 35:438-448 https://doi.org/10.1111/j.1834-7819.1990.tb05427.x
Edwards DC, Whitworth JM. Does an interim dressing with calcium hydroxide reduce endotoxins between endodontic appointments?. Evid Based Dent. 2021; 22:96-97 https://doi.org/10.1038/s41432-021-0199-6
Ehrmann EH, Messer HH, Adams GG. The relationship of intracanal medicaments to postoperative pain in endodontics. Int Endod J. 2003; 36:868-875 https://doi.org/10.1111/j.1365-2591.2003.00735.x
Segura-Egea JJ, Gould K, Şen BH European Society of Endodontology position statement: the use of antibiotics in endodontics. Int Endod J. 2018; 51:20-25 https://doi.org/10.1111/iej.12781
Abbott PV, Heithersay GS, Hume WR. Release and diffusion through human tooth roots in vitro of corticosteroid and tetracycline trace molecules from Ledermix paste. Endod Dent Traumatol. 1988; 4:55-62 https://doi.org/10.1111/j.1600-9657.1988.tb00295.x
Figini L, Lodi G, Gorni F, Gagliani M. Single versus multiple visits for endodontic treatment of permanent teeth. Cochrane Database Syst Rev. 2007; (4) https://doi.org/10.1002/14651858.CD005296.pub2
Abbott PV. Factors associated with continuing pain in endodontics. Aust Dent J. 1994; 39:157-161 https://doi.org/10.1111/j.1834-7819.1994.tb03084.x
Naoum HJ, Chandler NP. Temporization for endodontics. Int Endod J. 2002; 35:964-978 https://doi.org/10.1046/j.1365-2591.2002.00600.x
Bracciale F, Marino N, Noronha A Bacterial contamination of gutta-percha points from different brands and the efficacy of a chairside disinfection protocol. Eur Endod J. 2020; 5:282-287 https://doi.org/10.14744/eej.2020.44265
American Association of Endodontists. Treatment standards: executive summary. 2019. https//www.aae.org/specialty/wp-content/uploads/sites/2/2019/11/TreatmentStandards_2019.pdf (accessed September 2023)
MacInnes A, Hall AF. Indications for cuspal coverage. Dent Update. 2016; 43:150-158 https://doi.org/10.12968/denu.2016.43.2.150
Aquilino SA, Caplan DJ. Relationship between crown placement and the survival of endodontically treated teeth. J Prosthet Dent. 2002; 87:256-263 https://doi.org/10.1067/mpr.2002.122014
Quality guidelines for endodontic treatment: consensus report of the European Society of Endodontology. Int Endod J. 2006; 39:921-930 https://doi.org/10.1111/j.1365-2591.2006.01180.x

Re-endodontic Treatment. Part 2: How?

From Volume 50, Issue 9, October 2023 | Pages 740-748

Authors

David Edwards

BDS(Hons), MSc(RestDent), MFDS RCS(Ed), MFDTEd, PGDipRestDent RCS(Eng), PGDipConSed, PGCertMedEd, PGDipClinRes, FHEA,

Newcastle Dental Hospital

Articles by David Edwards

Nisha Dowling

BDS MFDS RCS(Glas)

Newcastle Dental Hospital

Articles by Nisha Dowling

Email Nisha Dowling

A Gemmell

Practice Principal, Kingston Park Advanced Dentistry, Newcastle upon Tyne

Articles by A Gemmell

Stephen J Bonsor

BDS(Hons) MSc FHEA FDS RCPS(Glasg) FDFTEd FCGDent GDP

The Dental Practice, 21 Rubislaw Terrace, Aberdeen; Hon Senior Clinical Lecturer, Institute of Dentistry, University of Aberdeen; Online Tutor/Clinical Lecturer, University of Edinburgh, UK.

Articles by Stephen J Bonsor

Abstract

Where primary root canal treatment has failed, case selection is critical. If the reason for failure can be identified and overcome, then this is the main aim of re-treatment. The second of this two-part series discusses ways in which failed cases can be predictably re-treated, using a series of cases to illustrate key points.

CPD/Clinical Relevance: Root canal re-treatment can offer a predictable treatment option with awareness of common pitfalls..

Article

Part 1 of this series discussed potential reasons for endodontic failure and introduced the concept of assessing teeth to determine whether they should be considered for conventional root canal re-treatment, peri-radicular microsurgery or extraction.1 Part 2 now expands this discussion around pre-operative assessment and introduces techniques commonly used for re-endodontic treatment.

Where a decision is made to undertake non-surgical re-treatment, additional assessment is required. Case selection is essential to providing predictable treatment and obtaining informed consent, with appropriate discussion of risks and benefits. It is essential to ascertain why the root canal treatment (RCT) has failed,1 and whether this can be addressed by further treatment. The following questions should be considered.

Irrespective of technical shortfalls, anatomical complexities or iatrogenic errors, restorability of the tooth must be considered before investing clinician and patient time and resources. The dental practicality index (DPI)2 can be a useful tool to aid decisions regarding restorability and explaining these to patients. This assesses the structural integrity of the tooth, periodontal stability, endodontic need and other contextual factors, such as overall restorative needs, social, dental and medical factors. The DPI has been validated, being shown to predict the likely outcome of RCT.3 A first step may be the removal of existing restorations as part of the assessment of restorability, which may identify the reason for failure and critically, the restorability of the tooth. Caries, cracks and marginal breakdown are much more likely to be identified following restoration removal. For example, caries has been identified pre-operatively in 19.2% of teeth, whereas following restoration removal this increased to 86.1%.4 Furthermore, restoration removal will permit direct visualization of subgingival margins enabling a decision between extraction, marginal elevation5 or the ability to place an indirect restoration margin, as well as assessment of ferrule6 and better visualization of angulation for access.

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