scholarly journals The Efficacy of Reciproc Blue® For Canal Cleanliness Following the Retreatment of Maxillary First Molar: In Vitro Analysis

2021 ◽  
Vol 7 (1) ◽  
pp. 22-27
Author(s):  
Mohd Nazrin Isa ◽  
Aws Hashim Ali Al-Kadhim ◽  
Azlan Jaafar
Keyword(s):  
Filling Material ◽  
Volume Percentage ◽  
Gutta Percha ◽  
Maxillary Molars ◽  
Significant Difference ◽  
Time Required ◽  
Vitro Analysis ◽  
Cleaning And Disinfection ◽  
In Vitro Analysis

Nonsurgical retreatment involves removing mechanical barriers such as gutta-percha to achieve proper cleaning and disinfection. The complexity of the anatomy of molar tooth gives challenge in retreatment procedure. Thus, this study evaluates the amount of residual gutta-percha after retreatment with rotary files (Reciproc Blue®) from each maxillary first molar canal using cone-beam computed tomography (CBCT) and the time required to accomplish it. Nine freshly extracted maxillary molars were instrumented and obturated. Preoperative CBCT was taken, and retreatment was done using Reciproc Blue®. CBCT was taken post retreatment, and the residual volume percentage of gutta-percha from each canal was calculated. The total retreatment time was recorded, and the data were statistically analyzed. The result shows no statistically significant difference in the amount of residual filling material in mesiobuccal, distobuccal, and palatal canal for maxillary first molar and total time used for retreatment with Reciproc Blue® system.

scholarly journals In vitro analysis of thermocompaction time and gutta-percha type on quality of main canal and lateral canals filling

2010 ◽  
Vol 24 (3) ◽  
pp. 290-295 ◽  
Author(s):  
André Luiz da Costa Michelotto ◽  
Cacio Moura-Netto ◽  
Ângela Toshie Araki ◽  
Eduardo Akisue ◽  
Abílio Albuquerque Maranhão Moura ◽  
...  
Keyword(s):  
Gutta Percha ◽  
Main Canal ◽  
Vitro Analysis ◽  
In Vitro Analysis

scholarly journals In vitro evaluation of gutta-percha dissolution ability of different solvents

RSBO ◽  
2017 ◽  
Vol 14 (3) ◽  
pp. 152-05
Author(s):  
Kelly Cristina Santana de Oliveira ◽  
Flávia Sens Fagundes Tomazinho ◽  
Monique Marchiori ◽  
Marilisa Carneiro Leão Gabardo ◽  
Sérgio Herrero Moraes ◽  
...  
Keyword(s):  
Statistical Test ◽  
Control Group ◽  
Filling Material ◽  
Time Intervals ◽  
Orange Oil ◽  
Loss Analysis ◽  
Gutta Percha ◽  
Significant Difference ◽  
Endodontic Retreatment

The removal of the filling material during the Endodontic retreatment is essential, so a better action of solvents on the gutta-percha is desired. Objective: To evaluate in vitro the gutta-percha dissolution ability of different solvents. Material and methods: Four solvents (xylol, eucalyptol, citrol, and orange oil) were applied on gutta-percha points, which had been later submitted to the weight loss analysis at 2, 5, and 10 minutes. For each solvent, 30 size #60 main cones were used, divided into three groups. Distilled water was used as control group. The statistical test applied was Kruskal-Wallis. Results: No statistically significant difference occurred among the solvents at 2 minutes (p > 0.05); however, during this period, citrol had the best performance. In longer time intervals, the xylol showed differences compared to eucalyptol at 5 minutes and to eucalyptol and citrol at 10 minutes (p < 0.05). The worst results were found for eucalyptol. Conclusion: This xylol was the solvent with improved ability to dissolve the gutta-percha points, with better results at longer time periods.

scholarly journals Effectiveness of Three Rotary Niti Instruments and Hand Instrumentation in Removing Gutta Percha from Root Canals: an in vitro Study

2015 ◽  
Vol 03 (03) ◽  
pp. 152-158
Author(s):  
Varun Jindal ◽  
Ajay Chhabra ◽  
◽  
Keyword(s):  
In Vitro Study ◽  
Radiographic Analysis ◽  
Filling Material ◽  
Universal System ◽  
Root Canals ◽  
Gutta Percha ◽  
Significant Difference ◽  
Niti Instruments ◽  
Hand Instrumentation

Abstract Objectives: The study aimed to assess variation in the remaining filling material by radiographic analysis and the time taken for retreatment system, with H-files; the ProTaper Universal Retreatment System; Mtwo retreatment system and the SybronEndo K3. Methods: 120 human mandibular premolars with single straight root canals were prepared with rotary twisted files (up to size 40/0.04) using the crown down technique and filled by cold lateral condensation and the radiographs were taken. After one week, teeth were divided into four groups (n = 30). Gutta-percha was removed using H-files, the ProTaper Universal Retreatment System, Mtwo system and the K3 System. After retreatment radiographs were taken for each sample and the remaining material was calculated for each canal third. Results: Rotary NiTi instruments were significantly faster than the hand instrumentation technique in performing the retreatment. In radiographic analysis there was significant difference in between the groups for coronal third in ProTaper group and for apical third in H-file group. Conclusions: In the radiographic analysis the ProTaper Universal System left less filling material in the coronal third and the H-files left less filling material in apical third as compared to other groups. Rotary instruments worked faster than H files.

scholarly journals In vitro evaluation of apical microleakage using different root-end filling materials

2006 ◽  
Vol 14 (1) ◽  
pp. 49-52 ◽  
Author(s):  
Márcia Carneiro Valera ◽  
Carlos Henrique Ribeiro Camargo ◽  
Alessandra Sverberi Carvalho ◽  
Eduardo Ramalho Pereira Gama
Keyword(s):  
Zinc Oxide ◽  
Root Apex ◽  
Tissue Fluid ◽  
Filling Material ◽  
Human Teeth ◽  
Root Canals ◽  
Filling Materials ◽  
Gutta Percha ◽  
Significant Difference

The objective of this study was to evaluate the apical leakage of retrograde cavities filled with Portland Cement (Concrebrás S/A-MG-Brazil), ProRoot MTA TM (Dentsply International, Johnson City, TN, USA) and Sealapex (Kerr Corporation, Orange, California, USA) with addition of zinc oxide (Odahcam Herpo Produtos Dentários Ltda, Rio de Janeiro, RJ, Brazil). Forty-two extracted single-rooted human teeth were decoronated and used for this study. The root canals were instrumented at 1.0mm short of the apical foramen using the step-back technique to an apical ISO size 60. The roots were obturated with gutta-percha points and sealer Sealapex (Kerr Corporation-USA) and then 3mm of each root apex was sectioned at a 90° angle. Ultrasonic retrograde preparation was performed with a diamond tip to 3mm depth and the roots were randomly divided into 3 groups according to the filling material: G1-Portland, G2-ProRoot MTA, G3- Sealapex zinc oxide-added cement. The root surfaces were covered with nail varnish up to 2mm from the apical foramen, immersed in simulated tissue fluid for 30 days, and then immersed in 0.2% Rhodamine B solution for 24 hours for evaluation of marginal leakage. The results showed mean leakage of 0.75, 0.35 and 0.35 for groups 1, 2 and 3, respectively; however, Kruskal-Wallis test revealed that there was no statistically significant difference among the results (p>0.05).

scholarly journals Investigating the Cytotoxic and Anti-Bacterial Activity of Commercially Available Local Anesthetics: An In-Vitro Analysis

2020 ◽  
Vol 29 (04) ◽  
pp. 185-192
Author(s):  
Eisha Imran ◽  
◽  
Faisal Moeen ◽  
Humayoon Satti ◽  
Lubna Rahman
Keyword(s):  
Local Anesthetic ◽  
Local Anesthetics ◽  
Bacterial Activity ◽  
Dilution Method ◽  
Human Mscs ◽  
Bacterial Strains ◽  
Significant Difference ◽  
Vitro Analysis ◽  
In Vitro Analysis

OBJECTIVE: To evaluate and compare the influence of three local anesthetic dental formulations manufactured in France (Septodont), Korea (Medicaine) and Pakistan (HD-Caine) in terms of cytotoxicity and anti-bacterial activities. METHODOLOGY: 90 commercially available local anesthetic cartridges of similar composition (2% lidocaine with epinephrine 100,000) viz. Septodont, Medicaine and HD-Caine were randomly collected from three different Pakistani cities and were assigned as Group S, Group M and Group H, respectively. The cartridges were further divided into three sub-groups each consisting of 10 cartridges to first evaluate cytotoxicity on Mesenchymal Stem Cells (MSCs) using a flow cytometer and secondly to investigate anti-bacterial activity by measuring zones of inhibition and through Broth Dilution Method against five bacterial strains. RESULTS: The results indicated that Septodont (94.5±0.1) and Medicaine (94.7±0.0) showed the highest viability percentage with no significant difference when the two were compared (P=0.6). HD-Caine (93.9±0.0) showed the least, being significantly (P<0.01) different from Septodont and Medicane. A statistically significant (P<0.05) difference was identified between the three study groups regarding the anti-bacterial activity. HD-Caine showed the highest anti-bacterial potential, followed by Medicaine and Septodont. CONCLUSION: Mild toxicity was observed by all the three groups in human MSCs, justifying their safe use in clinical practice. Additionally, Medicane and HD-Caine showed significant anti-bacterial activity indicating their possible use as sterile irrigants. KEYWORDS: Dental anesthesia, Lidocaine, Epinephrine, Antibacterial activity HOW TO CITE: Imran E, Moeen F, Satti H, Rahman L. Investigating the cytotoxic and anti-bacterial activity of commercially available local anesthetics: An in-vitro analysis. J Pak Dent Assoc 2020;29(4):185-192.

scholarly journals Trueness of Intraoral Scanners in Implant-Supported Rehabilitations: An In Vitro Analysis on the Effect of Operators’ Experience and Implant Number

2021 ◽  
Vol 10 (24) ◽  
pp. 5917
Author(s):  
Paolo Pesce ◽  
Francesco Bagnasco ◽  
Nicolò Pancini ◽  
Marco Colombo ◽  
Luigi Canullo ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Clinical Results ◽  
Operator Experience ◽  
Clinical Scenarios ◽  
Significant Difference ◽  
Experienced Operator ◽  
Vitro Analysis ◽  
Single Implant ◽  
In Vitro Analysis

(1) Background: Intraoral scanners (IOS) are widely used in prosthodontics. However, a good trueness is mandatory to achieve optimal clinical results. The aim of the present in vitro study was to compare two IOS considering the operator’s experience and different implant clinical scenarios. (2) Methods: Two IOS (IT—Itero, Align Technology; and OS—Opera MC, Opera System, Monaco) were compared simulating three different clinical scenarios: single implant, two implants, and full-arch rehabilitation. Ten scans were taken for each configuration by two different operators (one expert, one inexperienced); influence of operator experience and the type of scanner used was investigated. (3) Results: Trueness of the scans differed between the experienced and non-experienced operator and this difference was statistically significant in all the three scenarios (p = 0.000–0.001, 0.037). A significant difference was present between the scanners (p = 0.000), in the two-implant and full-arch scenarios (p = 0.00). (4) Conclusions: Experience of the operator significantly affect trueness of IT and OP scanners. A statistically significant difference was present among IOS in the two-implant and full-arch scenarios.

scholarly journals Evaluation of apically extruded debris during removal of gutta-percha and ResilonTM using different instrumentation techniques

2018 ◽  
Vol 75 (1) ◽  
pp. 56-61
Author(s):  
Dragana Pesic ◽  
Irena Melih ◽  
Veljko Kolak ◽  
Ana Nikitovic ◽  
Ankica Jakovljevic
Keyword(s):  
Treatment Success ◽  
In Vitro Study ◽  
Filling Material ◽  
Gutta Percha ◽  
Rotary Instruments ◽  
Apical Extrusion ◽  
Significant Difference ◽  
Ah Plus ◽  
Endodontic Retreatment

Background/Aim. Apical extrusion of material is considered as one of the very important factor for endodontic treatment success. Microorganisms, necrotic tissue, filling material and irrigants, which can be extruded apically during endodontic retreatment, may jeopardize the success of the therapy. The aim of this in vitro study was to quantitatively evaluate the amount of apically extruded debris during endodontic retreatment of teeth obturated with two different materials, using one hand and three rotary instrumentation techniques. Methods. Ninety-six extracted single-rooted teeth were endodontically treated and enlarged to size 40 using BioRaCe system, and then randomly divided into 8 groups of 12 specimens each. Half of the specimens were obturated with gutta-percha and AH Plus? sealer and another half with RealSeal SE system, using lateral condensation technique. Retreatment was performed using: Hedstr?m files; ProFile rotary files; ProTaper Retreatment system and D-RaCe system. Apically extruded debris was collected in pre-weighed Eppendorf tubes and evaluated using an electronic microbalance. Data were analyzed statistically using t-test and analysis of variance. Results. In the AH Plus/gutta-percha group, all tested rotary instruments gave significantly less extruded debris compared with Hedstr?m files (p < 0.05). In theRealSeal group, there was significant difference between DRaCe and Hedstr?m instruments (p < 0.05). Conclusion. All retreatment techniques resulted in apical extrusion. DRaCe system produced significantly less extruded debris compared to hand files. No significant difference was found when comparing two instruments specially designed for retreatment: D-RaCe and ProTaper systems.

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