What’s new for the clinician? - Excerpts from and summaries   of recently published papers

Endodontic files are used to remove intracanal pulpal tissues, microbial biofilm, and toxic by-products and to develop a continuously tapering canal while maintaining the canal geometry that ultimately allows for the delivery of irrigating solutions and intracanal medicaments as well as the three-dimensional filling of the root canal system. Historically, stainless steel hand files have been used to perform canal shaping. However, these files are stiff and associated with increased operator fatigue, and when used in the preparation of curved root canals, the restoring forces of the files tend to return the file back to its original shape, resulting in canal transportation.

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A Rare Root Canal Configuration of Maxillary Canine: A Case Report

Journal of Universal College of Medical Sciences ◽

10.3126/jucms.v5i2.19167 ◽

2018 ◽

Vol 5 (2) ◽

pp. 53-56

Author(s):

Deepa Kunwar ◽

Bhawana Adhikari ◽

Vanita Gautam ◽

Chetna Arora ◽

Snigdha Subham ◽

...

Keyword(s):

Root Canal ◽

Three Dimensional ◽

Anatomical Variations ◽

Canal System ◽

Maxillary Canine ◽

Root Canals ◽

Single Root ◽

System A ◽

Intimate Knowledge ◽

Root Canal System

To report a case of endodontic treatment of a maxillary canine in which an extra canal was located and successfully treated. Endodontic therapy is essentially a micro neurologic surgical procedure involving complete debridement and three dimensional obturation of the root canal system to obtain a fluid impervious seal. The foundation of the procedure is based on the intimate knowledge and thorough understanding of the anatomy of both the pulp chamber and the root-canal system. A tooth exhibit variations in their root canal anatomy and poses a challenge in diagnosis and treatment. In the teeth particularly with additional root canals or anatomical variations, root canals are often left untreated and that would be the main reason for unfavourable outcome of the treatment. Maxillary canine are statistically more commonly single rooted, single canal but rarely may have single root with two root canals.Journal of Universal College of Medical Sciences, Vol. 5, No. 2, 2017, Page: 53-56

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Shock of paradigms on the instrumentation of curved root canals

Brazilian Dental Journal ◽

10.1590/s0103-64402006000100001 ◽

2006 ◽

Vol 17 (1) ◽

pp. 3-5 ◽

Cited By ~ 6

Author(s):

Jesus Djalma Pécora ◽

Alexandre Capelli

Keyword(s):

Accurate Determination ◽

Metal Alloys ◽

New Paradigm ◽

Canal System ◽

Apical Portion ◽

Root Canals ◽

Root Canal System ◽

Flexible Instruments ◽

Curved Root Canals

This paper makes a practical analysis about the paradigm on the instrumentation of curved root canals. In Endodontics, a paradigm has been created. Theories and techniques for instrumentation of curved root canals state that the use of a #25 file in the apical portion fulfills all the requirements for cleaning and shaping of the root canal system. Every scientific theory or paradigm should be continuously opened to modifications or refutation. The existence of extremely flexible instruments fabricated from metal alloys, methods for accurate determination of the real anatomic diameter and achievement of optimal shaping and cleaning of the apical portion created new theories and a new paradigm on the instrumentation of curved root canals. Therefore, this new insight will gradually modify the mentality of researchers and clinicians, but will still be open to further investigations and theories.

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Micro-tomographic characterization of the root and canal system morphology of mandibular first premolars in a Chilean population

Scientific Reports ◽

10.1038/s41598-020-80046-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Alfredo Sierra-Cristancho ◽

Luis González-Osuna ◽

Daniela Poblete ◽

Emilio A. Cafferata ◽

Paola Carvajal ◽

...

Keyword(s):

Root Canal ◽

Multiple Root ◽

Root Anatomy ◽

Type I ◽

Micro Computed Tomography ◽

Canal System ◽

Root Canals ◽

Wide Range ◽

Root Canal System ◽

Chilean Population

AbstractThis study aimed to analyze the root anatomy and root canal system morphology of mandibular first premolars in a Chilean population. 186 teeth were scanned using micro-computed tomography and reconstructed three-dimensionally. The root canal system morphology was classified using both Vertucci’s and Ahmed’s criteria. The radicular grooves were categorized using the ASUDAS system, and the presence of Tomes’ anomalous root was associated with Ahmed’s score. A single root canal was identified in 65.05% of teeth, being configuration type I according to Vertucci’s criteria and code 1MP1 according to Ahmed’s criteria. Radicular grooves were observed in 39.25% of teeth. The ASUDAS scores for radicular grooves were 60.75%, 13.98%, 12.36%, 10.22%, 2.15%, and 0.54%, from grade 0 to grade 5, respectively. The presence of Tomes’ anomalous root was identified only in teeth with multiple root canals, and it was more frequently associated with code 1MP1–2 of Ahmed’s criteria. The root canal system morphology of mandibular first premolars showed a wide range of anatomical variations in the Chilean population. Teeth with multiple root canals had a higher incidence of radicular grooves, which were closely related to more complex internal anatomy. Only teeth with multiple root canals presented Tomes’ anomalous root.

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Micro-Computed Tomography (Micro-CT) Evaluation of Effects of Different Rotary Glide Path Techniques on Canal Transportation and Centering in Curved Root Canals

Medical Science Monitor ◽

10.12659/msm.916112 ◽

2019 ◽

Vol 25 ◽

pp. 6351-6358

Author(s):

Gabrielė Česaitienė ◽

Tadas Venskutonis ◽

Vita Mačiulskienė ◽

Vaidotas Cicėnas ◽

Vykintas Samaitis ◽

...

Keyword(s):

Computed Tomography ◽

Micro Ct ◽

Micro Computed Tomography ◽

Root Canals ◽

Glide Path ◽

Ct Evaluation ◽

Canal Transportation ◽

Curved Root Canals

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Evaluation of Interference of Calcium Hydroxide-based Intracanal Medication in Filling Root Canal Systems

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1061 ◽

2011 ◽

Vol 12 (5) ◽

pp. 368-371 ◽

Cited By ~ 3

Author(s):

Matheus Melo Pithon ◽

Deyla Duarte Vilela ◽

Manoel Matos Neto ◽

Alexandre Mascarenhas Villela

Keyword(s):

Calcium Hydroxide ◽

Clinical Significance ◽

Root Canal ◽

Canal System ◽

Root Canals ◽

Anterior Teeth ◽

Knowing That ◽

Group I ◽

Canal Systems ◽

Root Canal System

ABSTRACT Aim To evaluate the interference of the intracanal medication Calen® (SSWhite, São Paulo, Brazil) on the filling of simulated lateral canals. Materials and methods Twenty human anterior teeth were used. Before the endodontic filling procedures the access of cavity was made, and after this root canals were made in all the teeth to simulate the presence of lateral canals. After preparation, the teeth were randomly divided into two groups (n=10). In group I, the root canal system was filled directly after chemicalmechanical preparation; in group II, endodontic treatment was performed in multiple sessions, and after preparation the calcium hydroxide-based intracanal medication Calen® was inserted. After the period of 7 days, the root canals were vigorously irrigated and then they were filled. Next, the teeth were radiographed to verify the quality of the filling. Results The results demonstrated that the teeth treated in a single session, without calcium hydroxide medication, presented 47 canals out of 60 with radiographic evidence of filling, whereas the teeth in which intracanal medication was used, only 07 presented a radiographic image compatible with filling (p < 0.05). Conclusion The use of the calcium hydroxide-based medication Calen made it difficult to obtain a hermetic filling of the root canal system. Clinical significance The clinical significance of this work basing on the fact that once the dentist knowing that property obliteration of calcium hydroxide can be taken care when they are used in the presence of lateral canals. How to cite this article Vilela DD, Neto MM, Villela AM, Pithon MM. Evaluation of Interference of Calcium Hydroxide-based Intracanal Medication in Filling Root Canal Systems . J Contemp Dent Pract 2011;12(5):368-371.

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COMPARATIVE QUALITY ASSESSMENT OF ROOT CANAL PREPARATION WITH DIFFERENT SYSTEMS OF ENDODONTIC INSTRUMENTS

Wiadomości Lekarskie ◽

10.36740/wlek202006112 ◽

2020 ◽

Vol 73 (6) ◽

pp. 1145-1148

Author(s):

Maryna A. Goray ◽

Nataliia G. Gadzhula ◽

Olena V. Muntian ◽

Olena L. Cherepakha ◽

Larysa F. Kurdysh

Keyword(s):

Root Canal ◽

Canal System ◽

Universal Group ◽

Root Canals ◽

Root Canal System ◽

High Degree ◽

Dentine Surface ◽

Apical Area

The aim: To compare the quality of root canal system preparation with the use of manual K-files, machine Protaper Universal and Silk files by in vitro studies. Materials and methods: Root canals preparation in 45 extracted premolars was performed in three groups with 15 teeth in each with K-files, Protaper Universal and Silk files. Transverse sections of the dental root were prepared. Histologically were assessed: amount of sawdust and predentin remaining, the purity degree of root canal walls. Results: When calculating the sawdust amount at the distance of 3 mm from an apex, a high degree of contamination was observed in the manual K-file group: 53.3% versus 33.3% in the Protaper Universal group and against 20.0% in the Silk file group. The amount of predentin after root canal treatment with manual files reached 25-30%. At the distance of 5 mm from the apex the root canals with high and medium purity degree were detected in 86.7% with Silk files and 80.0% with Protaper Universal files used. All predentin was removed when working with Protaper Universal and Silk files. Conclusions: In the histological sections of the root canals treated with K-files, the larger amount of dentine particles and predentin has been revealed than when using machine tools. The largest amount of predentin and dentine were removed with Protaper Universal files. Silk endodontic system is better for treatment of the root canals dentine surface in the apical area compared to Protaper Universal and K-files.

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Endodontic Irrigation Solutions: A Review

International Dental Research ◽

10.5577/intdentres.2017.vol7.no3.2 ◽

2017 ◽

Vol 7 (3) ◽

pp. 54 ◽

Cited By ~ 2

Author(s):

Celalettin Topbas ◽

Ozkan Adiguzel

Keyword(s):

Root Canal ◽

Native Speakers ◽

Antimicrobial Properties ◽

Canal System ◽

Root Canals ◽

Native Speakers Of English ◽

Root Canal System ◽

Dentin Tubules ◽

Endodontic Irrigation ◽

Organic Tissue

The goal of endodontic treatment is to remove all the vital and necrotic tissues, microorganisms and microbial byproducts from root canal system. This goal can be achieved through chemical and mechanical debridement of root canals. This article narrates the specifics and requirements of the irrigation solutions. Sodium hypochlorite is proposed as the primary irrigant by virtue of its organic tissue dissolution capacity and broad antimicrobial properties. On the other hand, chelation solutions are recommended as auxiliary solutions to remove the smear layer or to hinder its formation on dentin surface. Thus, it's hoped that sealers and root canal fillers can penetrate to dentin tubules and obturate the canals hermetically. There are new studies on traditional irrigants especially on some irrigants that can replace sodium hypoclorite. This article reviews the new irrigants which can be used in future endodontic practice, and their advantages and limitations. Moreover, actions and interactions of recently used irrigants are adverted. How to cite this article: Topbas C, Adiguzel O. Endodontic Irrigation Solutions: A Review. Int Dent Res 2017;7:54-61. Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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Endodontic Retreatment of a Mandibular Second Premolar with Four Roots and Four Canals: A Case Report

JOURNAL FOR CLINICAL AND DIAGNOSTIC RESEARCH ◽

10.7860/jcdr/2020/45816.14227 ◽

2020 ◽

Author(s):

Girish Nanjannawar ◽

Saquib Mulla ◽

Divya Gupta ◽

Sharad Kamat

Keyword(s):

Case Report ◽

Root Canal ◽

Accurate Diagnosis ◽

Clinical Implications ◽

Canal System ◽

Root Canals ◽

Single Root ◽

Comprehensive Knowledge ◽

Root Canal System ◽

Endodontic Retreatment

It is a well-recognised fact that incomplete cleaning, shaping and obturation of root canals will lead to endodontic failure. Mandibular second premolars usually have a single root and a single root canal. The presence of four separate roots and four root canals is quite rare. Hence, a comprehensive knowledge about the normal canal configuration along with its variations becomes an indispensable pre-requisite to achieve the success of endodontic treatment. Authors hereby present a case of a 26-year-old male patient and describe its succesful treatment of the mandibular second premolar with four roots and four root canals. The clinical implications of this paper aim at establishing an accurate diagnosis of the root canal system using diagnostic aids such as angulated radiographs and making use of advanced endodontic instruments for successful retreatment of endodontic therapy (C+ files and NiTi rotary endodontic instruments).

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