Search Dental Tribune

Irrigating the root canal: A case report

Post-operative radiograph (Image: Dr Vittorio Franco, UK and Italy)
Dr Vittorio Franco, UK and Italy

Dr Vittorio Franco, UK and Italy

Mon. 22. January 2018

save

The patient reported on in this article is a student in dentistry and his parents are both dentists. They referred their son to a good endodontist, who then referred the case to me. As always, peers are more than welcome in either of my practices, in Rome and London, so when I treated this case, I had three dentists watching me, a future dentist on the chair, placing a great deal of pressure on me.

The 22-year-old male patient had a history of trauma to his maxillary incisors and arrived at my practice with symptoms related to tooth #21. The tooth, opened in an emergency by the patient’s mother, was tender when prodded, with a moderate level of sensitivity on the respective buccal gingiva. Sensitivity tests were negative for the other central incisor (tooth #12 was positive), and a periapical radiograph showed radiolucency in the periapical areas of both of the central incisors. The apices of these teeth were quite wide and the length of teeth appeared to exceed 25 mm.

My treatment plan was as follows: root canal therapy with two apical plugs with a calcium silicate-based bioactive cement. The patient provided his consent for the treatment of the affected tooth and asked to have the other treated in a subsequent visit.

After isolating with a rubber dam, I removed the temporary filling, and then the entire pulp chamber roof with a low-speed round drill. The working length was immediately evaluated using an electronic apex locator and a 31 mm K-type file. The working length was determined to be 28 mm.

As can be seen in the photographs, the canal was actually quite wide, so I decided to only use an irrigating solution and not a shaping instrument. Root canals are usually shaped so that there will be enough space for proper irrigation and a proper shape for obturation. This usually means giving these canals a tapered shape to ensure good control when obturating. With open apices, a conical shape is not needed, and often there is enough space for placing the irrigating solution deep and close to the apex.

I decided to use only some syringes containing 5 per cent sodium hypochlorite and EDDY, a sonic tip produced by VDW, for delivery of the cleaning solution and to promote turbulence in the endodontic space and shear stress on the canal walls in order to remove the necrotic tissue faster and more effectively. After a rinse with sodium hypochlorite, the sonic tip was moved to and from the working length of the canal for 30 seconds. This procedure was repeated until the sodium hypochlorite seemed to become ineffective, was clear and had no bubbles. I did not use EDTA, as no debris or smear layer was produced.

I suctioned the sodium hypochlorite, checked the working length with a paper point and then obturated the canal with a of 3 mm in thickness plug of bioactive cement. I then took a radiograph before obturating the rest of the canal with warm gutta-percha. I used a compomer as a temporary filling material.

The symptoms resolved, so I conducted the second treatment only after some months, when the tooth #11 became tender. Tooth #21 had healed. I performed the same procedure and obtained the same outcome (the four-month follow-up radiograph showed healing).

Editorial note: A complete list of references are available from the publisher. This article was published in roots - international magazine of endodontology No. 04/2017.

One thought on “Irrigating the root canal: A case report

  1. The ultimate reason why root canals fail is bacteria. If our mouths were sterile there would be no decay or infection, and damaged teeth could, in ways, repair themselves. So although we can attribute nearly all root canal failure to the presence of bacteria, I will discuss five common reasons why root canals fail, and why at least four of them are mostly preventable.

To post a reply please login or register
Speakers at the sixth GC International Dental Symposium in October in Japan will explore the growing emphasis on form, surface texture, layering and light management in modern restorative dentistry. (Image: Tatiana/Adobe Stock)

TOKYO, Japan: Predictable, aesthetic and minimally invasive restorative dentistry will be a prominent theme at the sixth GC International Dental Symposium, to be held on 3 and 4 October at the Tokyo International Forum. A number of presentations on aesthetic and restorative excellence will show how material selection, anatomical understanding and evidence-based restorative techniques can contribute to lifelike, functional and durable outcomes.

Selected sessions will focus on aesthetic integration, direct composite techniques, restorative material selection and minimally invasive treatment approaches. Together, they will offer clinicians and dental teams a clinically grounded view of current developments in restorative dentistry, showing how minimally invasive treatment planning, risk-based material selection and the precise emulation of natural tooth anatomy contribute to predictable clinical outcomes.

Among the featured speakers will be Dr Javier Tapia Guadix, an internationally recognised restorative and aesthetic dentist and co-founder of the Bio-Emulation Group, which focuses on biomimetic dentistry. In the session “Mastering direct composite—from aesthetics to function”, he will give a presentation on biomimetics in anterior composite restorations. His lecture will examine how anterior composite restorations can be shaped, layered and finished to reproduce natural tooth form, harmonious proportions and lifelike optical effects.

Dr Javier Tapia Guadix is an internationally recognised restorative and aesthetic dentist and co-founder of the Bio-Emulation Group. (Image: Dr Javier Tapia Guadix)

Dr Javier Tapia Guadix is an internationally recognised restorative and aesthetic dentist and co-founder of the Bio-Emulation Group. (Image: Dr Javier Tapia Guadix)

Dr Tapia told Dental Tribune International: “Without any doubt, morphology is probably the most overlooked factor in restorative dentistry. What truly determines whether a restoration looks natural is the way light interacts with its surface and internal structure.” He explained that restorations that accurately reproduce natural tooth anatomy are more readily perceived as lifelike and integrated into the surrounding dentition. This requires close attention to anatomical features such as line angles, facial planes, and vertical and horizontal surface texture. These micro- and macro-anatomical details, he said, are essential for achieving natural-looking optical integration.

His emphasis on morphology reinforces a central point in aesthetic composite work: natural-looking restorations depend not only on shade selection but also on form, surface texture, layering and the management of light. In anterior composite restorations in particular, predictability depends on the clinician’s ability to analyse the natural tooth and translate that information into a structured approach to restoration, Dr Tapia explained.

Dr Tapia said that the Bio-Emulation approach is based on structural analysis and visual synthesis. Structural analysis requires a detailed understanding of dental morphology and function, including both external and internal anatomy. He noted that dentine architecture directly influences optical behaviour and therefore forms part of aesthetic planning.

“Without any doubt, morphology is probably the most overlooked factor in restorative dentistry.”

Dr Javier Tapia Guadix, co-founder, Bio-Emulation Group

Visual synthesis involves the evaluation of shade dynamics and light interaction under several forms of illumination, including reflected, transmitted, cross-polarised and ultraviolet light. In Bio-Emulation, this approach is referred to as dynamic light observation and supports more precise assessment of shade, translucency and opacity. “By integrating these principles during the layering and morphological development of anterior composite restorations, we are able to achieve highly predictable and naturally biomimetic outcomes,” Dr Tapia said.

The aesthetic and restorative focus will continue in “Chasing the perfect match: The art and science of composite shade matching for life-like restorations”, presented by Drs Bora Korkut, Céline Higton and Yukihiro Kosaka. The session will examine shade matching in anterior composite restorations, incisal third recreation in Class IV restorations and biomimetic techniques for posterior restoration.

From glass ionomers to glass hybrids

Further perspective on restorative excellence will be offered in the session “From glass ionomers to glass hybrids: 50 years of innovation”, presented by Profs. Yasushi Shimada, Falk Schwendicke and Ivana Miletić. The session will place restorative materials within the broader context of material development and examine how advances in these materials influence clinical decision-making.

Prof. Schwendicke, director of LMU’s Department of Conservative Dentistry, Periodontology and Digital Dentistry in Munich in Germany, told Dental Tribune International that the post-amalgam era requires clinicians to move beyond a mechanical model of restorative care. He said: “The most important shift is the transition towards a minimally invasive, biology-driven treatment philosophy.” He explained that modern restorative dentistry increasingly requires clinicians to view caries as a dynamic disease process. This means placing greater emphasis on prevention, early detection and lesion control before operative intervention.

Prof. Falk Schwendicke is director of LMU’s Department of Conservative Dentistry, Periodontology and Digital Dentistry in Munich in Germany. (Image: Prof. Falk Schwendicke)

Prof. Falk Schwendicke is director of LMU’s Department of Conservative Dentistry, Periodontology and Digital Dentistry in Munich in Germany. (Image: Prof. Falk Schwendicke)

Prof. Schwendicke said that the main priority when restoration is necessary is the maximum preservation of sound tooth structure, alongside a number of further considerations. He explained: “Clinicians must also consider cost-effectiveness and practicality, particularly in settings where ideal conditions are not always achievable. Furthermore, given the growing emphasis on biocompatibility and patient-centred care, patients increasingly expect metal-free restorations, and clinicians must balance aesthetics, function, longevity and biological impact.”

The development of glass hybrid materials has added another option to this clinical decision-making process. According to Prof. Schwendicke, glass hybrids combine improved mechanical properties with the advantages associated with glass ionomers, including fluoride release, chemical adhesion and relative moisture tolerance. This makes them especially useful in situations in which ideal adhesive conditions are difficult to achieve, such as cases involving high caries risk or suboptimal isolation.

“In this sense, they support a more pragmatic, context-sensitive approach to care,” he continued. Rather than defaulting to one restorative option, clinicians can select materials according to caries activity, lesion location, patient compliance and access to care. Prof. Schwendicke added that glass hybrids support minimally invasive dentistry because “they allow for simplified cavity designs, reduced preparation and, in some cases, even atraumatic restorative approaches”.

One Week of Excellence

Organised by GC Corp., the sixth GC International Dental Symposium is inviting dental professionals from around the world to Tokyo to participate in its broader One Week of Excellence line-up. In addition to the two-day scientific programme featuring 72 lectures and offering up to 54 continuing education credits, the symposium will be accompanied by hands-on courses, social events and organised cultural activities, including tours of Tokyo and the mountain town of Nikkō.

The symposium will offer simultaneous interpretation into Japanese and English, and participants will be able to earn continuing education credits. Further information about the programme and registration is available on the event website.

Topics:
Tags:
To post a reply please login or register
advertisement
advertisement