scholarly journals Effect of Various Irrigating Devices on the Removal of Two Different Forms of Calcium Hydroxide from Internal Resorption Cavities

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Nima Mousavi Nasab Mobarakeh ◽  
Afsaneh Taheri ◽  
Hadi Rahmanian ◽  
Dana Jafarpour ◽  
Sareh Rahmanian
Keyword(s):  
Calcium Hydroxide ◽  
Root Resorption ◽  
Positive Control ◽  
Negative Control ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Significant Difference ◽  
Ultrasonic Irrigation ◽  
Analyze Data

The present study aimed to investigate the efficiency of passive ultrasonic irrigation (PUI), EndoActivator (EA), standard needle irrigation (SNI), and XP-endo Finisher files in removing pure calcium hydroxide (pCH) and injectable CH from in vitro root resorption cavities. Using a rotary system, the root canals of 116 extracted single rooted teeth were prepared. Imitated internal resorption cavities were then created in root halves. The specimens were divided into two groups according to the form of CH (n = 58): (I) pCH; (II) injectable CH. The teeth of each group were randomly divided into six subgroups: negative control (n = 5), positive control (n = 5), PUI (n = 12), XP-endo Finisher (n = 12), EA (n = 12), and SNI (n = 12). The root canals were irrigated using NaOCl and EDTA and split longitudinally, and both halves were evaluated with a stereomicroscope. Kruskal–Wallis and Mann–Whitney U tests were used to analyze data. The present results revealed that PUI completely removed pCH in 79% and injectable CH in 70.8% of the internal resorption cavities which was significantly higher than other methods (p<0.05). There was no statically significant difference between different forms of CH in terms of CH removal (p=0.918). The PUI technique was observed as the most efficient method of P-CH and injectable CH removal from a replicated internal resorption cavity. Finally, according to the findings, different forms of CH were comparable in terms of CH removal.

scholarly journals Calcium Hydroxide Removal Using Four Different Irrigation Systems: A Quantitative Evaluation by Scanning Electron Microscopy

2021 ◽  
Vol 12 (1) ◽  
pp. 271
Author(s):  
Luigi Generali ◽  
Francesco Cavani ◽  
Federico Franceschetti ◽  
Paolo Sassatelli ◽  
Luciano Giardino ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Positive Control ◽  
Negative Control ◽  
Irrigation Systems ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Ultrasonic Irrigation ◽  
Backscattered Electron ◽  
Calcium Hydroxide Removal ◽  
Scanning Electron

This study compares conventional endodontic needle irrigation, passive ultrasonic irrigation, apical negative pressure irrigation, and mechanical activation to remove calcium hydroxide from single straight root canals. Eighty-four mandibular premolars were prepared in a crown-down manner up to size #40. Two teeth represented a negative control, and another two served as a positive control. Calcium hydroxide paste was placed inside root canals. The remaining eighty samples were analyzed based on the activation techniques, and the cleanliness of the canals was quantified using Fiji’s software on 500× magnified SEM backscattered electron micrographs. Considering the whole canal, all instruments showed better performance than conventional endodontic needle irrigation in removing calcium hydroxide (p < 0.05). Irrisafe and XP-endo Finisher could remove a significantly higher amount of calcium hydroxide than Endovac (p < 0.05). Irrisafe and XP-endo Finisher have been able to remove more calcium hydroxide than EndoVac.

scholarly journals Comparison of different irrigation and agitation methods for the removal of two types of calcium hydroxide medicaments from the root canal wall: An in-vitro study

2017 ◽  
Vol 90 (3) ◽  
pp. 327-332 ◽  
Author(s):  
Deepak Singh Kirar ◽  
Pradeep Jain ◽  
Pallav Patni
Keyword(s):  
Calcium Hydroxide ◽  
Root Canal ◽  
Positive Control ◽  
Positive Control Group ◽  
Control Group ◽  
Passive Ultrasonic Irrigation ◽  
Ultrasonic Irrigation ◽  
Group 2 ◽  
Group 1

Background and aim: Comparison of different irrigation and agitation methods for the removal of two types of calcium hydroxide medicaments from the root canal walls.Methods: Fifty extracted single rooted teeth were selected for this study. After decoronation, the root canals of these teeth were prepared to the size F3 (30 no.) using rotary ProTaper file system. These samples were randomly divided into four groups. Group 1 (n=20) were filled completely with water based calcium hydroxide (CH), Group 2 (n=20) were filled with oil based CH using lentulo spiral, Group 3 (n=5) - the positive control group received the CH as intracanal medication, but no subsequent removal, Group 4 (n=5) - the negative control did not receive CH placement. Further on, Group 1 and Group 2 were divided into four sub-groups (n=5). In sub-group A we performed conventional syringe irrigation with side-vented needle sub-group B) manual dynamic agitation, sub-group C sonic agitation using endoactivator, sub-group D passive ultrasonic irrigation (PUI). Roots were split longitudinally into mesial and distal halves. Digital images of the root canal walls were acquired by a Dental Operating Microscope (DOM) and assessed by using a scoring criteria at different thirds (coronal, middle and apical) of the root canal as follows: score 1, score 2, score 3, and score 4. Data were analyzed applying one-way analysis of variance (ANOVA) and Tukey’s multiple comparison tests at a 95% confidence interval (P < 0.05).Results: Statistically significant differences were not found between the experimental groups and the negative group in any one third of the root canal (P>0.05). However, a difference did exist between the experimental groups and the positive control group (P<0.05). None of the experimental groups totally removed CH substances from root canal walls.Conclusion: Among all experimental groups, removal of CH was best achieved by sonic agitation using endoactivator followed by passive ultrasonic irrigation (PUI), manual dynamic agitation and conventional syringe irrigation with side-vented needle.

scholarly journals Evaluation of the efficacy of XP-endo Finisher, Easy Clean, Passive ultrasonic irrigation, and conventional irrigation in the removal of calcium hydroxide in simulated internal root resorption cavities

2021 ◽  
Vol 10 (3) ◽  
pp. e1510313023
Author(s):  
Gabriela Jorge Campos ◽  
Carlos Eduardo da Silveira Bueno ◽  
Rina Andrea Pelegrine ◽  
Ana Grasiela da Silva Limoeiro ◽  
Carlos Eduardo Fontana ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Root Resorption ◽  
Human Teeth ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Continuous Rotation ◽  
Ultrasonic Irrigation ◽  
Belo Horizonte ◽  
Reciprocating Movement ◽  
Conventional Irrigation

This study aimed to evaluate the efficacy of 5 irrigation protocols in removing calcium hydroxide in simulated internal root resorption cavities. Eighteen extracted human teeth, upper anterior and uniradicular, were prepared up to size 50. The teeth were divided longitudinally, and internal root resorption cavities were made by acid demineralization using nitric acid. The same sample was submitted to the five irrigation protocols. The cavities and root canals were filled with Ultracal XS (Ultradent, South Jordan, UT, USA) and stored in an incubator at 37ºC for one week. Afterward, the irrigation protocols were carried out: XP-endo Finisher (XPF; FKG, La Chaux-de-Fonds, Switzerland), passive ultrasonic irrigation (PUI), Easy Clean (Bassi/Easy Equipamentos Odontológicos, Belo Horizonte, Brazil) with reciprocating movement (ECR), Easy Clean with continuous rotation (ECC) and conventional irrigation with a syringe (CI). The solutions used, 2.5% NaOCl, and 17% EDTA, were warmed. The total volume of irrigant used for each sample was 20 mL (10 mL of 2.5% NaOCl, 5 mL of 17% EDTA and 5 mL of distilled water). The amount of calcium hydroxide remaining in the internal resorption after irrigation was assessed using scores. The data were analyzed using the Pearson and Kruskal-Wallis (Dunn) tests. Significantly more calcium hydroxide was removed in the XPF group than all other sample groups (P < 0.0001). XPF was superior to the other methods tested to remove calcium hydroxide in teeth with simulated internal resorptions.

scholarly journals In vitro Assessment of Calcium Hydroxide Removal from Endo Blocks by Simple Irrigation with NaOCl and the Passive Ultrasonic Irrigation Technique

2017 ◽  
Vol 54 (1) ◽  
pp. 122-124
Author(s):  
Alexandru Vlasa ◽  
Carmen Biris ◽  
Luminita Lazar ◽  
Anamaria Bud ◽  
Eugen Bud ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Canal System ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Incomplete Removal ◽  
Ultrasonic Irrigation ◽  
Root Canal System ◽  
In Vitro Assessment ◽  
Calcium Hydroxide Removal

Because endodontic pathology is caused due to bacterial contamination of the root canal system, endodontic treatment should focus on eliminating microorganisms in root canals. For more than 70 years Calcium Hydroxide has an important role in antimicrobial endodontic therapy. The use of calcium hydroxide is limited by the incomplete removal thereof, a residue covering 20% to 45% of the ductal wall, even after irrigation with NaOCl or EDTA. This study aims to evaluate the removal of calcium hydroxide in root canals using two different techniques.

scholarly journals Efficiency of calcium hydroxide removal techniques from simulated internal resorptions - in vitro study

2021 ◽  
pp. 29-29
Author(s):  
Vanja Opacic-Galic ◽  
Djordje Veljovic ◽  
Jelena Neskovic ◽  
Vesna Milosevic ◽  
Veljko Ilic
Keyword(s):  
Calcium Hydroxide ◽  
Root Resorption ◽  
In Vitro Study ◽  
Efficient System ◽  
Single Root ◽  
Significant Difference ◽  
Effective System ◽  
Ultrasonic Irrigation ◽  
Calcium Hydroxide Removal

Introduction/Objective. Calcium hydroxide (CH) is the medicament of choice in endodontic treatment of internal root resorptions. The aim of the study was to compare the effectiveness of three different techniques for CH removal from simulated internal root resorptions. Methods. Twenty-nine extracted single-root teeth were prepared using NiTi rotary files of BioRaCe system (40/.04) following irrigation. A round diamond drill was used in the making of a symmetrical standardized internal resorptions 6mm from the apex. Three techniques for CH removal from internal resorptions were tested: modified conventional syringe irrigation (CSI), passive ultrasonic irrigation (PUI), XP-endo Finisher (XP). Resorptive cavities and apical thirds were observed under a stereomicroscope (X45) and scored (from 1 to 5), while representative samples were analysed by SEM. Obtained results were statistically processed by Kruskal-Wallis and Mann-Whitney U-test, (p <0.05). Results. The most efficient system was PUI, with 66.7% of samples rated 1 and 33.3% rated 2. The next one was XP-endo Finisher, and the least efficient was CSI with 33.3% of samples rated 1 (resorptive defect without medicament). There was a statistically significant difference between the PUI and CSI systems (p <0.05), while there was no difference between the PUI and XP systems. Conclusion. No system completely removed the CH from the simulated internal root resorption cavities. PUI was the most effective system for removing CH. The combination of techniques provides better performance in removing CH paste residues from the canal walls.

Aktivitas Antifungi Air Perasan Bawang Merah (Allium ascalonicum L.) Terhadap Candida albicans Secara In Vitro

2017 ◽  
Vol 9 (2) ◽  
pp. 71
Author(s):  
Nurhasanah Nurhasanah ◽  
Fauzia Andrini ◽  
Yulis Hamidy
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Allium Sativum ◽  
Fungicidal Activity ◽  
Positive Control ◽  
Negative Control ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design

Shallot (Allium ascalonicum L.) has been known as traditional medicine. Shallot which has same genus with garlic(Allium sativum L.) contains allicin that is also found in garlic and has been suspected has fungicidal activity toCandida albicans. It is supported by several researches. Therefore, shallot is suspected has antifungal activity too.The aim of this research was to know antifungal activity of shallot’s water extortion againsts Candida albicans invitro. This was a laboratory experimental research which used completely randomized design, with diffusion method.Shallot’s water extortion was devided into three concentrations, there were 50%, 100% and 200%. Ketoconazole 2%was positive control and aquadest was negative control. The result of this research based on analysis of varians(Anova), there was significant difference between several treatments and was confirmed with Duncan New MultipleRange Test (DNMRT) p<0,05, there was significant difference between 100% shallot’s water extortion with othertreatments, but there was no significant difference between 50% shallot’s water extortion with 200% shallot’s. Theconclusion was shallot’s water extortion had antifungal activity againsts Candida albicans with the best concentration100%, but it was lower than ketoconazole 2%.

scholarly journals Evaluation of the Sealing Ability of Three Obturation Techniques Using a Glucose Leakage Test

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Katarzyna Olczak ◽  
Halina Pawlicka
Keyword(s):  
Continuous Wave ◽  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Thermal Methods ◽  
Root Canals ◽  
Anterior Teeth ◽  
Sealing Ability ◽  
Significant Difference

The aim of this study was to evaluate the sealing ability of three different canal filling techniques. Sixty-four roots of extracted human maxillary anterior teeth were prepared using ProTaper® rotary instruments. The specimens were then randomly divided into 3 experimental groups (n=16) and 2 control groups (n=8). The root canals were filled using cold lateral compaction (CLC group), continuous wave condensation technique using the Elements Obturation Unit® (EOU group), and ProTaper obturators (PT group). For the negative control group, 8 roots were filled using lateral compaction as in the CLC group, and the teeth were covered twice with a layer of nail varnish (NCG group). Another 8 roots were filled using lateral compaction, but without sealer, and these were used as the positive control (PCG group). A glucose leakage model was used for quantitative evaluation of microleakage for 24 hours and 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 weeks. No significant difference in the cumulative amount of leakage was found between the three experimental groups at all observation times. The lateral condensation of cold gutta-percha can guarantee a similar seal of canal fillings as can be achieved by using thermal methods, in the round canals.

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

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.

scholarly journals A Digital Microscopic Inspection of Dentinal Defects after Using Endodontic Retreatment Files

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Ammar AbuMostafa ◽  
Hala Almoqayyad ◽  
Al-Omari Mohammad
Keyword(s):  
Negative Control Group ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Filling Material ◽  
Root Canals ◽  
Root Canal Retreatment ◽  
Significant Difference ◽  
Digital Microscope ◽  
Microscopic Inspection

Aim. The study aimed at evaluating the incidence of dentinal defects after root canal retreatment with ProTaper Universal retreatment (PTUR) and XP-endo Shaper and Finisher R (XP). Materials and Methods. Sixty extracted single-rooted human premolars were selected and divided into 4 groups of 15 teeth each. In the negative control group, the teeth were left unprepared. In the positive control group, the teeth were prepared with ProTaper Next and obturated with no further retreatment. In the PTUR and XP groups, the teeth were prepared and obturated followed by removal of the filling material at body temperature using PTUR and XP instruments, respectively. The roots were then sectioned at 3, 6, and 9 mm from the apex and observed under a digital microscope to detect defects. Results. PTUR group showed significantly higher ( p value <0.05) incidence of defects than the other groups. Comparison of no defects versus defects between groups in different areas of root canals demonstrated significant difference among the groups in the apical and cervical regions. Conclusion. Within the limitations of the present study, PTUR files created significantly more dentinal defects than XP files, with most of those defects at the cervical and apical areas of the root canals.

Evaluating Dentin Surface Treatments for Resin-Modified Glass Ionomer Restorative Materials

2013 ◽  
Vol 38 (4) ◽  
pp. 429-438 ◽  
Author(s):  
TA Imbery ◽  
A Namboodiri ◽  
A Duncan ◽  
R Amos ◽  
AM Best ◽  
...  
Keyword(s):  
Testing Machine ◽  
In Vitro Study ◽  
Positive Control ◽  
Negative Control ◽  
Surface Treatments ◽  
Band Matrices ◽  
Dentin Surface ◽  
Occlusal Surfaces ◽  
Significant Difference

SUMMARY This in vitro study evaluated the effect of six surface treatments on the shear bond strength of three resin-modified glass ionomers (RMGIs) to dentin. Occlusal surfaces of caries-free third molars were reduced to expose only dentin. Surface treatments were smear layer intact (negative control), Cavity Conditioner, EDTA, Ketac Primer, Self Conditioner, and etching with 35% phosphoric acid followed by the application of Optibond Solo Plus. Filtek Z250 composite resin bonded with Optibond Solo Plus served as a positive control. Conditioning agents were used according to the manufacturers' instructions. After surface treatments, Fuji II LC, Riva LC, Ketac Nano, and Filtek Z250 were placed in copper-band matrices 5 mm in diameter and 2 mm in height and were light-cured for 20 seconds. Specimens were stored in 100% humidity for 24 hours, after which they were placed in deionized water for 24 hours at 37°C. They were then tested under shear forces in an Instron Universal Testing Machine at a crosshead speed of 0.5 mm/min. A two-way analysis of variance and Tukey honestly significant difference statistical analyses (p&lt;0.05) indicated significant interaction between RMGIs and conditioning agents. Acid etching followed by Optibond Solo Plus provided highest bond strengths for all three RMGIs, which were not statistically different from the positive control.

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