Endodontic therapy of pathological resorptions of tooth root

Pathological resorptions of a tooth root very often represent both a diagnostic and therapeutical problem. The goal of this study was, based on clinical research on a number of pathological resorptions of various types and localization in relation to time, to analyze and evaluate applied endodontic therapy. Clinical research covered 30 patients (40 root canals in total). 18 teeth (22 canal) with external and 12 (18 canal) with internal root resorptions received endodontic therapy. After standard endodontic procedure had been applied (cleaning and canal shaping) calcium hydroxide paste was used as a canal medicament for cases with internal resorptions and calcium hydroxide paste and points for cases with external resorptions. Canal opturations were done by modified technique of lateral condesation applying AH- Plus paste. The obtained results showed that in cases of internal resorption after 12 months, 11 cases were successful and only 1 failure occurred. In case of external resorption, after the same period of time, 15 cases were successful and failures occurred in 3 cases. The success of resorption treatment depends on many factors but, primarily, it depends on time and accuracy of diagnosis and properly applied treatment and root canal opturation.

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Comparison of the Effects of a Bioceramic and Conventional Resin-Based Sealers on Postoperative Pain after Nonsurgical Root Canal Treatment: A Randomized Controlled Clinical Study

Materials ◽

10.3390/ma14102661 ◽

2021 ◽

Vol 14 (10) ◽

pp. 2661

Author(s):

Kiche Shim ◽

Young-Eun Jang ◽

Yemi Kim

Keyword(s):

Postoperative Pain ◽

Postoperative Period ◽

Root Canal ◽

Continuous Wave ◽

Root Canal Treatment ◽

Root Canals ◽

Anterior Teeth ◽

Significant Difference ◽

Ah Plus ◽

Group 2

Background: This clinical trial aimed to compare the effects of bioceramic sealer and resin-based sealer on the incidence and intensity of postoperative pain. Methods: Patients with anterior teeth or premolars requiring root canal treatment were assigned to group 1 (n = 51). Those with molars requiring treatment were assigned to group 2 (n = 57). In groups 1En and 2En, root canals were obturated with Endoseal MTA using the single-cone technique. In groups 1AH and 2AH, the sealer used was AH Plus with the continuous wave technique. On the day of canal filling, each patient was instructed to indicate their pain intensity over the 7 day postoperative period, at rest and, while biting, using a visual analog scale. Results: There was no significant difference in the incidence or intensity of postoperative pain between the Endoseal MTA and AH Plus groups during the 7 day postoperative period (p > 0.05). Less time was needed to seal the root canals with Endoseal MTA, especially in group 2 (p < 0.05). Conclusions: Endoseal MTA and AH Plus had similar effects on the incidence and intensity of postoperative pain. The obturation time was shorter when using Endoseal MTA compared to AH Plus.

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Portland Cement Use in Dental Root Perforations: A Long Term Followup

Case Reports in Dentistry ◽

10.1155/2014/637693 ◽

2014 ◽

Vol 2014 ◽

pp. 1-5

Author(s):

Álvaro Henrique Borges ◽

Matheus Coelho Bandeca ◽

Mateus Rodrigues Tonetto ◽

Luis Augusto Faitaroni ◽

Elibel Reginna de Siqueira Carvalho ◽

...

Keyword(s):

Portland Cement ◽

Calcium Hydroxide ◽

Root Canal ◽

Clinical Signs ◽

Signs And Symptoms ◽

Clinical Aspects ◽

Iatrogenic Perforation ◽

Root Canals ◽

First Case ◽

Clinical Signs And Symptoms

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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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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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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Effects of Contemporary Irrigant Activation Schemes and Subsequent Placement of an Interim Dressing on Bacterial Presence and Activity in Root Canals Associated with Asymptomatic Apical Periodontitis

Journal of Clinical Medicine ◽

10.3390/jcm9030854 ◽

2020 ◽

Vol 9 (3) ◽

pp. 854 ◽

Cited By ~ 7

Author(s):

Alexandre P. L. Carvalho ◽

Laura C. L. Nardello ◽

Fernanda S. Fernandes ◽

Fernanda P. Bruno ◽

Luiza R. Paz ◽

...

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Quantitative Polymerase Chain Reaction ◽

Apical Periodontitis ◽

Universal Primers ◽

Rrna Gene ◽

Root Canal Preparation ◽

Root Canals ◽

Mechanical Preparation ◽

Root Canal Disinfection

New tools for activating endodontic irrigants have evolved, yet their impact on root canal disinfection, in comparison to the passive placing of an inter-visit medication, have not yet been fully elucidated. The use of DNA- and rRNA-based methods may cast some new light on this issue, as they allow a comparison to be made between microbial presence and activity. Therefore, the aim of this single-arm intervention trial is to evaluate the antibacterial effect of endodontic procedures using both molecular methods. Root canal samples were obtained from 20 patients with asymptomatic apical periodontitis after each treatment step: access cavity, chemo-mechanical preparation, adjunctive procedures (XP-endo Finisher file and passive ultrasonic irrigation), calcium hydroxide medication, and 2nd-visit root canal preparation. DNA and cDNA from the samples were subjected to quantitative polymerase chain reaction with universal primers for the bacterial 16S rRNA gene. Chemo-mechanical preparation promoted a drastic reduction in bacterial levels and activity, whereas the adjunctive procedures did not make a significant contribution to further disinfection. At the 2nd visit, bacteria were active after the use of calcium hydroxide medication; however, they were significantly reduced after a 2nd-visit preparation. Consequently, the lowest bacterial levels were found at the end of the treatment. This clinical trial, which used an rRNA and rDNA combined approach, confirmed previous studies showing that root canal preparation represents the main strategy for root canal disinfection.

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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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Effect of Calcium Hydroxide as a Root Canal Dressing Material on Dentin Fracture Strength In Primary Teeth–In Vitro Study

Journal of Clinical Pediatric Dentistry ◽

10.17796/1053-4628-42.2.11 ◽

2018 ◽

Vol 42 (2) ◽

pp. 146-149

Author(s):

Fadi Said ◽

Moti Moskovitz

Keyword(s):

Calcium Hydroxide ◽

Fracture Strength ◽

Root Canal ◽

Primary Teeth ◽

In Vitro Study ◽

Vitro Study ◽

Root Canal Treatment ◽

Root Canals ◽

Anterior Teeth

Objectives: The aim of the present study was to assess the effect of calcium hydroxide as a root canal dressing material on dentin microtensile fracture strength in human primary teeth in vitro. Study design: Thirty primary anterior teeth with root canals packed with calcium hydroxide were divided into groups of ten and immersed in saline at room temperature for 7, 30 and 90 days. Ten teeth with root canals filled with sterile saline were the control group. Microtensile fracture strength was measured in Mechanical tester Lloyd testing machine. Results: There was a significant difference (P < 0.05) between the fracture strength of the calcium hydroxide-filled teeth after 90 days (19.1 MPa) compared with the control (35.8 MPa). Dentin microtensile fracture strength of the calcium hydroxide-filled teeth decreased at an average of 0.142 MPa per day. Conclusion: Calcium hydroxide placed in root canals for an extended time had a significantly negative effect on root strength. Long-term success of root canal treatment in primary anterior teeth is estimated as 65% with most of the failures result from trauma recurrence. Clinical Relevance: Our results stress the need to evaluate the pros and cons of root canal treatment compared to extractions of non-vital primary incisors.

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Determining of the Most Optimal Parameters of Monopolar High Frequency Diathermocoagulation in Endodontic Practice

Alinteri Journal of Agricultural Sciences ◽

10.47059/alinteri/v36i1/ajas21037 ◽

2021 ◽

Vol 36 (1) ◽

pp. 252-256

Author(s):

Daurova Fatima Yuryevna ◽

Tomaeva Diana Islanbekovna ◽

Gasanova Zarema Magomedovna ◽

Butaeva Natalia Taymurazovna ◽

Podkopaeva Svetlana Vasilevna ◽

...

Keyword(s):

Root Canal ◽

High Frequency ◽

Antibacterial Effect ◽

Dental Treatment ◽

Anaerobic Bacteria ◽

Thermal Imager ◽

Tooth Root ◽

Optimal Parameters ◽

Root Canals ◽

The Third

The main criterion for successful endodontic treatment is thorough cleaning of the root canal from microorganisms. Modern technologies are being developed to decontaminate the root canal system due to local temperature increase. High-frequency monopolar diathermocoagulation refers to one of these technologies. Aim. To determine the optimal parameters of monopolar high-frequency diathermocoagulation providing a distinct antibacterial effect and which are safe for the surrounding tissues in endodontic dental treatment. Materials and methods. Root canals of single-root removed teeth from the group of upper and lower jaw incisors (12 samples). The DC-35 MS device (2640 kHz, 1. 5 kOhm) was used to study various modes of high-frequency monopolar diathermocoagulation. 6 exposure modes were studied. To determine the heating degree of the tooth root surface, thermometry using a compact infrared radiation converter of the Seek Thermal imager was used, and a remote infrared thermometer Testo 830-T1 was used for temperature monitoring. After determining of the diathermocoagulation modes that are not able to cause significant heating of the surrounding tooth tissues, the antibacterial effect of diathermocoagulation in these modes was studied. To do this, we used clinical strains of optionally anaerobic bacteria obtained from the teeth root canals in pulpitis: Streptococcus sanguis, Streptococcus mutans, Enterococcus faecalis, Escherichia coli and yeast-like fungi Candida albicans. Results. When performing diathermocoagulation of the root canal contents, the third, fourth and sixth modes of the device settings with the power given to the tissue within three seconds of energy in the range of 3.06 W to 5.4 W are safe for the tissues surrounding the tooth root. When treating root canals in the third and sixth modes, the power of diathermocoagulation is 5.4 W and 4.1 W. A multiple, significant decrease in microbial contamination of root canals by all kinds of pathogenic optional anaerobic microflora obtained from the teeth root canals in pulpitis was found.

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Radiographic and scanning electron microscopic assessment of root canal filling remnants after endodontic re-instrumentation

Brazilian Dental Science ◽

10.14295/bds.2017.v20i1.1325 ◽

2017 ◽

Vol 20 (1) ◽

pp. 80 ◽

Cited By ~ 1

Author(s):

Luciane Geanini Pena Santos ◽

Wilson Tadeu Felippe ◽

Beatriz Dulcineia Mendes Souza ◽

Andrea Cristina Konrath ◽

Mabel Mariela Rodríguez Cordeiro ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Root Canal ◽

Filling Material ◽

Root Canal Filling ◽

Root Canals ◽

Filling Materials ◽

Ah Plus ◽

Endodontic Retreatment ◽

Scanning Electron

Objective: Failures in endodontic treatment may occur by several reasons. Endodontic retreatment is an interesting alternative to manage this clinical problem. However, it is not possible to completely remove the root canal filling by any current retreatment technique. The aim of this study was to evaluate the presence of residual root canal filling materials after endodontic re-instrumentation. Material and Methods: Sixty extracted anterior human teeth were prepared by step-back technique with Flexofiles, K-files and Gates-Glidden (GG) burs. Between the use of each file or bur, root canals were irrigated with sodium hypochlorite (NaOCl). Smear layer was removed by irrigation with ethylenediaminetetraacetic acid and NaOCl. After drying with paper points the root canals were randomly divided into 5 groups (n = 12), according to filling material: Resilon cones/Real Seal sealer or gutta-percha cones and Endofill, Sealapex, AH Plus or MTA Fillapex sealers. After one week, root canal fillings were removed using Eucaliptol and K-files. Root canals were re-instrumented with K-files and GG burs sized larger than the first ones. The removal of root canal filling material was analyzed by radiography and scanning electron microscopy (SEM). Statistical analysis was performed using Binary Logistic Regression test (P < 0.05). Results: Radiographic and SEM analysis showed that material from the MTA Fillapex group was better removed than that from Endofill, Sealapex, AH Plus and Real Seal groups. Conclusion: After re-instrumentation, MTA Fillapex group showed less remnants into the root canals than Endofill, Sealapex, AH Plus and Real Seal groups. Residual material was most often found in the apical third.Keywords Dental radiography; Endodontic retreatment; Root canal filling materials; Scanning electron microscopy.

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