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

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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Effect of biomechanical preparation and calcium hydroxide pastes on the antisepsis of root canal systems in dogs

Journal of Applied Oral Science ◽

10.1590/s1678-77572005000100019 ◽

2005 ◽

Vol 13 (1) ◽

pp. 93-100 ◽

Cited By ~ 6

Author(s):

Janir Alves Soares ◽

Mario Roberto Leonardo ◽

Léa Assed Bezerra da Silva ◽

Mário Tanomaru Filho ◽

Izabel Yoko Ito

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Conventional Technique ◽

Canal System ◽

Root Canals ◽

Significant Difference ◽

Canal Systems ◽

Root Canal System ◽

Low Incidence ◽

Level Of Significance

In the endodontic treatment of root canals with necrotic pulps associated with periapical radiolucent areas, one of the main objectives of treatment consists in eliminating the microorganisms spread throughout the ramifications of the root canal system. The scope of this study was to evaluate the antiseptic efficacy of biomechanical preparation and two calcium hydroxide-based pastes, in dogs' teeth with experimentally induced chronic periapical lesions. After initial microbiological sampling, instrumentation of the root canals was undertaken using the conventional technique, using K type files used in conjunction with a solution of 5.25% sodium hypochlorite. After ninety-six hours, further microbiological sampling was undertaken and Calen/CPMC or Calasept pastes were applied for 15 and 30 days. Ninety six hours after the removal of the medication, the third microbiological sampling was undertaken and finally histomicrobiological analysis followed using Brown & Brenn staining. The results were analyzed using the Kruskall-Wallis test, with a level of significance established at 5% (p<0.05). It was shown that the biomechanical preparation significantly reduced the number of colony forming units of microorganisms in root canals. In contrast, there was no significant difference between the antiseptic action of long-term dressings over two periods of action, although 30 days produced a greater reduction in the quantity of microorganisms and of positive microbiological cultures. In histological sections of the four experimental groups, similar microbiological patterns were shown (p>0.05), characterized by an elevated incidence of cocci, bacilli and filaments, predominantly gram-positive, in root canals, secondary canals and accessories, apical cementoplasts and dentinal tubules, but with a low incidence of microorganisms in areas of cementum resorption and the periapical lesion. The biomechanical preparation and intracanal dressing based on calcium hydroxide were important in the antisepsis of the root canal; however, both procedures did not produce significant changes in the microbiological aspects of the root canal system.

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Effect of rotary instrumentation and of the association of calcium hydroxide and chlorhexidine on the antisepsis of the root canal system in dogs

Brazilian Oral Research ◽

10.1590/s1806-83242006000200006 ◽

2006 ◽

Vol 20 (2) ◽

pp. 120-126 ◽

Cited By ~ 9

Author(s):

Janir Alves Soares ◽

Mario Roberto Leonardo ◽

Léa Assed Bezerra da Silva ◽

Mario Tanomaru Filho ◽

Izabel Yoko Ito

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Physiological Saline ◽

Control Group ◽

Sodium Hypochlorite Solution ◽

Canal System ◽

Root Canals ◽

Significant Efficacy ◽

Microbiological Sample ◽

Root Canal System

This study aimed at evaluating the antisepsis of the root canal system (RCS) and periapical region (PR) provided by rotary instrumentation associated with chlorhexidine + calcium hydroxide as intracanal medicament. Chronic periapical lesions were induced in 26 pre-molar roots in two dogs. After microbiological sampling, automatic instrumentation using the Profile system and irrigation with 5.25% sodium hypochlorite solution, with a final rinse of 14.3% EDTA followed by profuse irrigation with physiological saline were carried out in 18 root canals. After drying the canals, a paste based on calcium hydroxide associated with a 2% chlorhexidine digluconate solution was placed inside them. After 21 days, the medication was removed, leaving the root canals empty and coronally sealed. After 96 hours, a final microbiological sample was obtained, followed by histomicrobiological processing by the Brown & Brenn method. Eight untreated root canals represented the control group (C-G). Based on the Mann-Whitney test at a confidence level of 5% (p < 0.05), the procedures of antisepsis used offered significant efficacy (p < 0.05) resulting in 100.0% of the canals free of microorganisms. In the C-G, an elevated incidence of various microbial morphotypes was confirmed in all sites of the RCS, with the presence of microbial colonies in the periapical region. In contrast, the experimental group showed a similar pattern of infection in the RCS, although less intense and a reduced level of periapical infection (p < 0.05). It was concluded that adequate instrumentation followed by the application of calcium hydroxide + chlorhexidine offered significant elimination of microorganisms.

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A Case of Unusual Anatomy in Second Mandibular Molar with Four Canals

European Journal of Dentistry ◽

10.1055/s-0039-1697382 ◽

2008 ◽

Vol 02 (03) ◽

pp. 217-219 ◽

Cited By ~ 2

Author(s):

C. Maniglia-Ferreira ◽

Fábio de Almeida-Gomesa ◽

Bruno Carvalho de Sousa ◽

Carla Cabral dos Santos Acioli Lins ◽

Roberto Alves dos Santos

Keyword(s):

Root Canal ◽

Root Canal Treatment ◽

Canal System ◽

Anatomical Features ◽

Second Molar ◽

Root Canals ◽

Mandibular Molar ◽

Canal Systems ◽

Mandibular Second Molar ◽

Root Canal System

ABSTRACTSuccess in root canal treatment is achieved after thought cleaning and shaping followed by the complete obturation of root canal system. Such treatment may be performed in root canal systems that do not comply with the normal anatomical features described in standard textbooks. This article describes the conventional root canal treatment on an unusual mandibular second molar with four root-canals. (Eur J Dent 2008;2:217-219)

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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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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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Maxillary Lateral Incisor with 3 Root Canals: A Case Report

Journal of Advanced Oral Research ◽

10.1177/2320206819867243 ◽

2019 ◽

Vol 10 (2) ◽

pp. 179-182

Author(s):

Mario Buonvivere ◽

Matteo Buonvivere

Keyword(s):

Case Report ◽

Root Canal ◽

Rare Case ◽

Lateral Incisor ◽

Complex Root ◽

Canal System ◽

Root Canals ◽

Single Root ◽

Maxillary Lateral Incisor ◽

Root Canal System

The proper knowledge of the root canal system anatomy is crucial to perform successful endodontic treatments. Maxillary lateral incisors usually have a single root. However, aberrant canal configurations of this tooth have been reported in the literature. The clinician should be aware of the difficulties arising from this more complex root canal anatomy and should be able to manage them. A rare case of a maxillary lateral incisor with three root canals is presented in this article; the challenge of diagnosis and treatment in similar situations is also discussed.

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Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-9-3-56 ◽

2008 ◽

Vol 9 (3) ◽

pp. 56-63 ◽

Cited By ~ 3

Author(s):

Ali Cemal Tinaz ◽

Baǧdagül Helvaciölu Kivanç ◽

Güliz Gürgül

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Filling Material ◽

Root Canal Sealer ◽

Tooth Structure ◽

Root Canals ◽

Gutta Percha ◽

Anterior Teeth ◽

Tooth Surfaces ◽

Tooth Preparation

Abstract Aim The focus of this study was to examine the staining potential of calcium hydroxide (Ca(OH)2) on tooth structure following the removal of AH26 root canal sealer. Methods and Materials Fifty maxillary anterior teeth were prepared and obturated with AH26 and gutta percha. The sealers were then removed 24 hours later and the teeth were randomly divided into two groups. Ca(OH)2 was then placed in the root canals of the first group of teeth as a medicament and camphorated monochlorophenol (CMCP) was placed in the second group of teeth after the filling material was removed. The color of the external tooth surfaces was determined before tooth preparation and two weeks after the placement of the medicaments. The Z test was used for statistical analysis. Results All experimental teeth showed varying degrees of coronal discoloration with the Ca(OH)2 group showing more discoloration than the CMCP group (p<0.05). Conclusion Using Ca(OH)2 as a medicament after removing AH26 caused progressive discoloration of the teeth, whereas using CMCP caused only slight discoloration. Clinical Significance To avoid staining of the treated tooth, AH26 root canal sealer must be completely removed from the dentin walls before using a medicament. Citation Tinaz AC, Kivanç BH, Görgül G. Staining Potential of Calcium Hydroxide and Monochlorophenol Following Removal of AH26 Root Canal Sealer. J Contemp Dent Pract 2008 March; (9)3:056-063.

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