scholarly journals In vitro evaluation of the efficacy of different protocols on calcium hydroxide dressing removal

2021 ◽  
Vol 62 (4) ◽  
Author(s):  
Ana Teles ◽  
◽  
Tiago Reis ◽  
Marina Remoaldo ◽  
António Santos ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Calcium Hydroxide ◽  
Sodium Hypochlorite ◽  
Permanent Teeth ◽  
Apical Region ◽  
Bonferroni Correction ◽  
Irrigation Systems ◽  
Single Root ◽  
A Value

Objective: To compare in vitro irrigation systems’ efficacy in removing calcium hydroxide paste (Ca(OH)2) in single-root teeth. Methods: Sixty permanent teeth were prepared using ProTaper® rotatory instruments, up to F3. Specimens were split longitudinally into two halves, and two grooves located in the apical and coronal zones were created. Ca(OH)2 application into the grooves was assessed by radiographic and photographic methods. After the halves were reassembled in a silicone mold, teeth were randomly divided into experimental groups (n=15), testing Ca(OH)2 removal: 1 – CanalBrush™; 2 – E1 – Irrisonic tip; 3 – manual dynamic irrigation (MDI); 4 – XP-endo Finisher® (XP). A total volume of 10 mL of 2.5% sodium hypochlorite was used in each tooth. Finally, all groups were scored regarding the Ca(OH)2 remnants using the same methods as before. Statistical analysis was conducted using the Kruskal-Wallis test followed by Mann-Whitney U tests (with Bonferroni correction). A value of p<0.05 was considered statistically significant. Results: None of the techniques demonstrated 100% efficacy in both regions. CanalBrush™ was more effective in the apical region. Overall, E1 – Irrisonic tip and CanalBrush™ removed significantly more Ca(OH)2 than MDI and XP-endo Finisher® (p<0.05). Conclusion: Globally, E1 – Irrisonic tip and CanalBrush™ were more effective, although without statistically significant differences between them.

Effects of eugenol and non-eugenol endodontic fillers on short post retention, in primary anterior teeth: an in vitro study

2005 ◽  
Vol 29 (3) ◽  
pp. 211-214 ◽  
Author(s):  
Fabiana Teixeira Alves ◽  
Ricardo de Sousa Vieira
Keyword(s):  
Tensile Strength ◽  
Statistical Analysis ◽  
Bond Strength ◽  
Calcium Hydroxide ◽  
Primary Teeth ◽  
In Vitro Study ◽  
Filling Material ◽  
Filling Materials ◽  
Anterior Teeth

The aim of this study was to measure in vitro the tensile bond strength of short composite posts in anterior primary teeth filled with calcium hydroxide and eugenol-based endodontic filling materials. Means of tensile strength ranged from 2.66 to 3.56MPa. Statistical analysis (ANOVA) revealed that there were no statistically significant differences between the groups. It was concluded that the type of filling material used in the endodontic treatment did not interfere with the tensile strength.

scholarly journals Effect of Enamel Pre-etching with Sodium Hypochlorite Deproteinisation and Bonding Agent on Retention and Microleakage of Pit and Fissure Sealants: An In-vitro Study

2021 ◽  
Author(s):  
VV Mubeena ◽  
Tharian B Emmatty ◽  
Kumar Kavita ◽  
Bijimole Jose ◽  
AM Riswana
Keyword(s):  
Sodium Hypochlorite ◽  
Artificial Saliva ◽  
Medical Science ◽  
Enamel Surface ◽  
Bonding Agent ◽  
Permanent Teeth ◽  
Acid Etching ◽  
Fissure Sealants ◽  
Pit And Fissure Sealants

Introduction: Sealants have proved to be one of the easiest methods of caries prevention in young permanent teeth, the placement of which is very technique sensitive. The non-invasive method of pretreating the enamel surface by deproteinising it with 5.25% sodium hypochlorite (NaOCl) for 60 seconds prior to etching has proven to be a promising method for improving retention and reducing microleakage of sealant. Aim: To evaluate the effect of enamel pre-etching with sodium hypochlorite deproteinisation and bonding agent on retention and microleakage of pit and fissure sealants. Materials and Methods: This in-vitro experimental study was conducted in Department of Paediatric and Preventive Dentistry at Annoor Dental College, Muvattupuzha, Kerala and Nanotechnology Lab at Amrita Institute of Medical Science. Freshly extracted Intact permanent maxillary and mandibular 20 third molars and 20 premolars mounted on acrylic blocks were divided into 4 groups containing 5 teeth in each group. Molars and premolar were taken for assessing the rate of retention and microleakage, respectively. Teeth in Group 1 were subjected to acid etching only, Group 2 were deproteinised prior to acid etching, Group 3 were subjected to acid etching followed by bonding and Group 4 were subjected to deproteinisation, etching and bonding. Then, all teeth were sealed with pit and fissure sealant and underwent thermocycling in artificial saliva bath for evaluation of sealant retention and microleakage. After thermocycling, retention was assessed on molar by one pre-calibrated blinded examiner by passing a 0.5 mm diameter probe along the margins of the sealant placed to verify integrity, failure, or loss of continuity based on Simonsen’s criteria (1989). To assess microleakage, premolar samples were immersed in rhodamine B, sectioned longitudinally, and examined under a stereomicroscope for assessment of microleakage. Collected data were statistically analysed using Chi-square and Mann-Whitney u test. Results: The results showed 100% retention for teeth in Group 2a, Group 3a, Group 4a, while partial sealant loss was present in 3 teeth from Group 1a. The differences between the groups for retention was statistically significant (p=0.014). In the case of microleakage, Group 3b showed more microleakage and group 4b showed least microleakage and the difference between them was statistically significant (p=0.009). Conclusion: Deproteinisation and use of bonding agent increases retention of the pit and fissure sealants. However, deproteinisation is a more effective method to control microleakage when compared to bonding agent. Thus, it can be considered as an effective method for pretreating enamel surface before sealant placement.

In vitro solubility of human pulp tissue in calcium hydroxide and sodium hypochlorite

1992 ◽  
Vol 8 (3) ◽  
pp. 104-108 ◽  
Author(s):  
M. Andersen ◽  
A. Lund ◽  
J. O. Andreasen ◽  
F. M. Andreasen
Keyword(s):  
Calcium Hydroxide ◽  
Sodium Hypochlorite ◽  
Pulp Tissue

scholarly journals Apical Extrusion of Debris and Irrigant using Novel Preparation Systems

2014 ◽  
Vol 15 (4) ◽  
pp. 423-427 ◽  
Author(s):  
Emel Uzunoglu ◽  
Melahat Görduysus
Keyword(s):  
Clinical Significance ◽  
Sodium Hypochlorite ◽  
Gravitational Force ◽  
Bonferroni Correction ◽  
Root Canals ◽  
Apical Extrusion ◽  
Significant Difference ◽  
The Mean

ABSTRACT Aim The aim of this in vitro study was to assess the amount of apically extruded debris and irrigant using Reciproc vs self-adjusting file (SAF) and to investigate the effect, if any, of gravitational force via mandibular and maxillary positioning of the teeth. Materials and methods Forty human mandibular premolars were randomly assigned to four groups of 10 teeth each. The root canals were instrumented according to the manufacturers’ instructions using the Reciproc and SAF. Sodium hypochlorite was used as the irrigant. The apically extruded debris was collected in pre-weighted glass vials using the Myers and Montgomery method, and teeth were placed in vials both in downward and upward positions. After drying, the mean weight of debris was assessed with a microbalance and statistically analyzed using two-way ANOVA with Bonferroni correction. Results All instrumentation techniques and positions caused measurable apical extrusion of debris. A significant difference was observed according to position and instrument used (p < 0.05). The Reciproc extruded significantly more debris than SAF and vial downward position extruded significantly more debris than upward position (p < 0.05). Conclusion Under the conditions of this study, all systems caused apical debris extrusion, especially in the downward position. Clinical significance According to results of this study, the SAF was associated with less debris extrusion compared to the Reciproc in both mandibular and maxillary positions. How to cite this article Uzunoglu E, Görduysus M. Apical Extrusion of Debris and Irrigant using Novel Preparation Systems. J Contemp Dent Pract 2014;15(4):423-427.

scholarly journals APEXIFICATION USING MODIFIED INTERNAL MATRIX CONCEPT

2020 ◽  
Vol 6 (1) ◽  
pp. 60-63
Author(s):  
Rinee Khanna ◽  
Saumya Navit ◽  
Suleman A Khan
Keyword(s):  
Case Report ◽  
Calcium Hydroxide ◽  
Mineral Trioxide Aggregate ◽  
Permanent Teeth ◽  
Successful Outcome ◽  
Collagen Membrane ◽  
Apical Region ◽  
Root Canals ◽  
Thin Walls ◽  
Combined Use

Immature roots with necrotic pulps in young permanent teeth are characterized by wide root canals with open apex and thin walls. Treatment of such teeth poses a great challenge. Traditionally such teeth were treated by apexification using calcium hydroxide and more recently by apical barrier technique using MTA apical plug. It is advised to use a resorbable and biocompatible apical matrix in cases involving MTA for careful condensation of the material in the apical region. This case report presents a successful outcome of apexification with the combined use of Mineral Trioxide Aggregate as an apical barrier and collagen membrane as an internal matrix.

scholarly journals In Vitro Assessment of Intracanal Calcium Hydroxide Removal Using Various Irrigation Systems: An SEM Study

2021 ◽  
Vol 22 (9) ◽  
pp. 1003-1007
Author(s):  
Maitri Shah ◽  
Pavithra K Ramanna ◽  
Abhinav K Singh ◽  
Arti Dixit ◽  
Deesha Kumari ◽  
...  
Keyword(s):  
Calcium Hydroxide ◽  
Irrigation Systems ◽  
Sem Study ◽  
In Vitro Assessment ◽  
Calcium Hydroxide Removal

scholarly journals Comparing the Antifungal Effect of Sodium Hypochlorite Gel versus Different Types of Root Canal Medicaments at Different Time Intervals Using the Agar Diffusion Test: An In Vitro Study

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Mohamed El Sayed ◽  
Nikta Ghanerad ◽  
Zeinab Shabanpour ◽  
Mahin Shabanpoor ◽  
Fatemeh Rahimi
Keyword(s):  
Antifungal Activity ◽  
Calcium Hydroxide ◽  
Sodium Hypochlorite ◽  
In Vitro Study ◽  
Significant Inhibition ◽  
Time Interval ◽  
Time Intervals ◽  
Significance Level ◽  
Agar Diffusion Test

Aims. The purpose of this study was to compare the antifungal activity of sodium hypochlorite gel to those of four intracanal medicaments at various time intervals. Materials and Methods. The agar well diffusion technique was utilized to test the antifungal activity of the following medicaments against Candida albinans (C. albicans): sodium hypochlorite gel, chlorhexidine gel, calcium hydroxide paste, Ledermix, and Diapex Plus. The inhibition zone related to each medicine was measured in millimeter after 24, 48, and 72 hours of incubation at 37°C. The data were analyzed using one-way ANOVA and Games–Howell tests, at a significance level of P < 0.05 . Results. Except for Ledermix and Diapex Plus, which had no antifungal action, all of the medicaments showed varied inhibitory zones for C. albicans. At all periods, the NaOCl gel had the most significant inhibition zones, followed by the CHX gel and calcium hydroxide. At all time intervals, the NaOCl gel demonstrated comparable antifungal efficacy. When compared to a 24-hour time interval, the CHX gel showed an increased antifungal activity at the 48-hour and 72-hour intervals. Calcium hydroxide, on the other hand, showed a decrease in its antifungal activity at the 72-hour interval. Conclusion. The antifungal activity of sodium hypochlorite gel was the highest among the investigated medicaments. Chlorhexidine gel's antifungal activity improved over time, whereas calcium hydroxide's antifungal activity declined. Diapex Plus and Ledermix did not have any antifungal properties.

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.

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