A novel model for testing the efficiency of removal of calcium hydroxide from complex root canal anatomies

Root canal and furcal perforations are causes of endodontic therapy failure and different materials that stimulate tissue mineralization have been proposed for perforation treatment. In the first case, a patient presented tooth 46 with unsatisfactory endodontic treatment and a periapical radiographic lesion. A radiolucent area compatible with a perforating internal resorption cavity was found in the mesial root. The granulation tissue was removed, and root canals were prepared. The intracanal medication was composed of calcium hydroxide and the perforation cavity was filled with Portland cement. The 11-year followup showed radiographic repair of the tissue adjacent to the perforation and absence of clinical signs and symptoms or periapical lesion. In the second case, a patient presented with edema on the buccal surface of tooth 46. The examination showed a radiolucent area in the furcation region compatible with an iatrogenic perforation cavity. The mesial root canals were calcified, and only the distal root canal was prepared. The cavity was filled with a calcium hydroxide-based paste and the distal root canal was obturated. In sequence, the perforation cavity was filled with Portland cement. The 9-year followup showed the tooth in masticatory function with radiographic and clinical aspects compatible with normality.

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In vitro evaluation of the effectiveness of the chemomechanical preparation against Enterococcus faecalis after single- or multiple-visit root canal treatment

Brazilian Oral Research ◽

10.1590/s1806-83242007000400005 ◽

2007 ◽

Vol 21 (4) ◽

pp. 308-313 ◽

Cited By ~ 8

Author(s):

Eduardo Diogo Gurgel-Filho ◽

Nilton Vivacqua-Gomes ◽

Brenda Paula Figueiredo de Almeida Gomes ◽

Caio Cezar Randi Ferraz ◽

Alexandre Augusto Zaia ◽

...

Keyword(s):

Calcium Hydroxide ◽

Enterococcus Faecalis ◽

Root Canal ◽

Control Groups ◽

Single Visit ◽

Root Canals ◽

Multiple Visit ◽

Microbial Samples ◽

Chlorhexidine Gel

The purpose was to assess the elimination of Enterococcus faecalis in vitro in human mandibular premolars after chemomechanical preparation with or without the use of a calcium hydroxide dressing. After 60 days of contamination with E. faecalis, the root canals were prepared using the Crown-Down technique combined with 2% chlorhexidine gel irrigation. Then, the specimens were divided into two experimental groups, treated in a single visit or in multiple visits, and two control groups. The multiple-visit group received a dressing with calcium hydroxide for 14 days (CalenTM) and the single-visit group did not receive any medication. In the two control groups, the canals were filled with BHI after chemomechanical preparation with 2% chlorhexidine gel or distilled water. Microbial samples were taken from the root canals for colony forming unit count for each phase of the treatment using sterile paper points inside the root canal lumen. Data were ranked and analyzed by the Kruskal-Wallis statistical test. The residual microbial colonies were then assessed. The results showed that chemomechanical preparation using 2% chlorhexidine gel with no intra-canal dressing reduced by 100% the E. faecalis contamination of the root canal lumen. The calcium-hydroxide group that received the 14-day intra-canal dressing allowed a small number of bacteria to grow between visits, but without statistical differences between groups.

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Dentinal pH changes following electrophoretically activated calcium hydroxide ions in the root canal space of bovine teeth

Dental Traumatology ◽

10.1111/j.1600-9657.2005.00308.x ◽

2005 ◽

Vol 21 (3) ◽

pp. 146-149 ◽

Cited By ~ 4

Author(s):

Igor Tsesis ◽

Shaul Lin ◽

Ervin I. Weiss ◽

Zvi Fuss

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Ph Changes

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Passive ultrasonic irrigation in calcium hydroxide removal from root canals: a sem/eds analysis

Journal of Research in Dentistry ◽

10.19177/jrd.v3e32015668-677 ◽

2015 ◽

Vol 3 (3) ◽

pp. 668

Author(s):

Fernanda Hoffmann Busanello ◽

Angela Longo Do Nascimento ◽

Lilian Tietz ◽

Mirela Sangoi Barreto ◽

Ricardo Abreu Da Rosa ◽

...

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Control Group ◽

Passive Ultrasonic Irrigation ◽

Root Canals ◽

Eds Analysis ◽

Ultrasonic Irrigation ◽

Calcium Hydroxide Removal ◽

And Control ◽

Elementary Chemical

AIM: The aim of this study was to evaluate the efficacy of different lengths of time of passive ultrasonic irrigation (PUI) in removing calcium hydroxide (CH) paste from root canal, using scanning electron microscopy and energy dispersive spectrometry (SEM/EDS). MATERIAL AND METHODS: Fifty-four human premolars were used. After coronal access, a size #15 K-file was used to obtain apical patency. Root canal preparation was performed using WaveOne 40.08 instruments. CH paste was placed into the root canal. Specimens were stored in a humid environment, and after seven days, they were divided into five groups (n=12) according to the irrigation protocols: Manual– a size #40 K-file; PUI/1– 1 min; PUI/2– 2 min; PUI/3– 3 min; and Control– without CH paste. An elementary chemical microanalysis (SEM/EDS) was performed to quantify the presence of calcium on the dentinal walls. RESULTS: The percentage of calcium was higher in all experimental groups when compared to the control group (P < 0.05); but no differences among them were found (P > 0.05). CONCLUSION: The amount of calcium hydroxide paste on the dentinal walls was not dependent on length of time of ultrasonic activation. SEM/EDS analysis seems to be a reliable method to assess CH paste removal from the root canals.

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Sealability of Different Root Canal Nanosealers: Nano Calcium Hydroxide and Nano Bioactive Glass

The Open Dentistry Journal ◽

10.2174/1874210601913010308 ◽

2019 ◽

Vol 13 (1) ◽

pp. 308-315

Author(s):

Asmaa A. Desouky ◽

Maged M. Negm ◽

Magdy M. Ali

Keyword(s):

Zinc Oxide ◽

Bioactive Glass ◽

Calcium Hydroxide ◽

Root Canal ◽

Blue Dye ◽

Nano Powder ◽

Zinc Oxide Eugenol ◽

Nail Polish ◽

Stereo Microscope

Background: The success of the endodontic treatment is largely dependent on the sealing achieved by root canal obturation. The application of sealer fills imperfections and increases adaptation of the root filling to the canal walls. Aim: To evaluate the sealability of experimental nanosealers (nano calcium hydroxide and nano bioactive glass) and to compare it with the commercial zinc oxide eugenol sealer using a dye penetration method. Materials and Methods: Sixty single-rooted mandibular premolars were selected. The tooth crowns were removed so as to obtain standardized 15-mm-long root specimens. The root canal was instrumented with Protaper Ni-Ti rotary file and the final file size was up to # F4/.06 (in vitro study). They were then randomly allocated into 3 groups of 20 specimens each (n=20) according to the sealer used for obturation, and all samples were filled with single cone gutta-percha (#40/06) and one of the tested sealers. All teeth were coated with nail polish and then suspended in 2% methylene blue dye for 7 days. Stereo-microscope (x10) was used to evaluate the sealability of newly introduced nanosealers. The data were statistically analyzed by ANOVA test followed by post hoc analysis (P < 0.05). Results: Significant improvement shown by the presented study suggests that nano calcium hydroxide sealer showed significantly less dye leakage than nano bioactive glass sealer and zinc oxide eugenol sealer. Conclusion: The results of this study showed that the synthesized nano-powder sealers are suitable for use in root canal therapy to prevent leakage. The root canal can be sealed better by using smaller nano-powder particle sizes. In addition, the two groups exhibited significant differences in leakage in comparison with commonly used ZOE sealer.

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Management of Severe Curvatures in Root Canal Treatment with the New Generation of Rotating Files Using a Safe and Predictable Protocol

The Open Dentistry Journal ◽

10.2174/1874210602014010421 ◽

2020 ◽

Vol 14 (1) ◽

pp. 421-425

Author(s):

Alfredo Iandolo ◽

Alessandra Amato ◽

Stefano Martina ◽

Dina Abdel latif ◽

Giuseppe Pantaleo

Keyword(s):

Surface Area ◽

Root Canal ◽

Root Canal Treatment ◽

Complex Root ◽

Root Canals ◽

New Generation ◽

Area And Volume ◽

Clinical Cases

Objective: The aim of this work was to show the management of severe curvatures done with the new generation of rotating files through a safe and predictable protocol. Methods: Three clinical cases were described. A safe protocol was explained using the latest generation of rotating files for the shaping of the anatomy of complex root canals. All the cases presented 90°, 45° curvatures and/or double curvatures. Results: The instrumentation of canals increased their surface area and volume. All the cases with 90° and 45° curvatures were optimally shaped. Conclusion: With the help of rotating files in the martensitic alloy, it is possible to work safely, while avoiding the risk of file separation, even in root canals with severe curvatures, thus achieving success even in complex clinical cases.

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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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APEXIFICATION WITH BIODENTINE - A CASE REPORT

CODS Journal of Dentistry ◽

10.5005/cods-5-2-3 ◽

2013 ◽

Vol 5 (2) ◽

pp. 3-5

Author(s):

R.S. Bassvanna ◽

Chitra Gohil

Keyword(s):

Case Report ◽

Calcium Hydroxide ◽

Root Canal ◽

Endodontic Treatment ◽

Clinical Scenario ◽

Root Canal Obturation ◽

Single Visit ◽

Dental Practitioners ◽

New Material ◽

Open Apices

ABSTRACT Management of non vital teeth with open apices isa challenge to the dental practitioners. In this clinical scenario, it is difficult to maintain the obturating material confine within the root canal without encroaching into periapical area. These kinds of cases cannot be managed by conventional endodontic treatment, and treatment of such cases with calcium hydroxide may take longer time for apical closure. But with this new material called BIODENTINE (Septodont) same treatment can be done in single visit with predictable result. Hence this case report present the use ofbiodentine to form an apical plug in open apex followed by complete root canal obturation using thermoplasticized guttapercha.

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Management of periradicular pathosis by single visit endodontic treatment using calcium hydroxide and mineral trioxide aggregate based sealer

Update Dental College Journal ◽

10.3329/updcj.v10i2.50174 ◽

2020 ◽

Vol 10 (2) ◽

pp. 10-13

Author(s):

Md Abdul Hannan Sheikh ◽

Eyad Al Khalifa ◽

Mozammal Hossain ◽

Md Faruk Hossain ◽

Nazneen Karim ◽

...

Keyword(s):

Calcium Hydroxide ◽

Statistical Methods ◽

Root Canal ◽

Mineral Trioxide Aggregate ◽

Endodontic Treatment ◽

Root Canal Treatment ◽

Radiological Evaluation ◽

Root Canal Therapy ◽

Radiological Investigation ◽

Single Visit

In this study, 120 teeth having periradicular pathosis were treated with single visit root canal treatment and then obturated with either calcium hydroxide containing sealer or mineral trioxide aggregate based sealer. The healing of periradicular pathosis was examined at 3, 6, and 12 months by clinical and radiological evaluation. Collected data were analyzed with standard statistical methods by using SPSS version- 20. The results showed that at 3 and 6 months, the differences between calcium hydroxide containing sealer or mineral trioxide aggregate based sealer were not statistically significant. However, the healing capability of periapical radiolucency at 12 months between two groups was statistically significant (P=0.03). The final outcome of the clinical and radiological investigation showed successful results of 96.6% and 98.1% in calcium hydroxide and mineral trioxide aggregate group, respectively. In conclusion, both calcium hydroxide and mineral trioxide aggregate based sealers are almost equally effective in single visit root canal therapy for the management of periradicular pathosis. Update Dent. Coll. j: 2020; 10 (2): 10-13

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