scholarly journals Whitening of a Non-Vital Tooth with Walking Bleach Technique: A Case Series

2021 ◽  
Vol 5 (2) ◽  
pp. CR1-CR5
Author(s):  
Deepika ◽  
Muhammad Mutiur Rahman ◽  
Ajay Kumar Nagpal
Keyword(s):  
Hydrogen Peroxide ◽  
Case Series ◽  
Sodium Perborate ◽  
Endodontically Treated Teeth ◽  
Efficient Treatment ◽  
Chemical Substances ◽  
Significant Aspect ◽  
Oxidizing Agents ◽  
Anterior Teeth ◽  
Tooth Discoloration

A significant aspect of cosmetic dentistry is the treatment of tooth discoloration. Discoloration of non-vital anterior teeth can cause significant esthetic concern and requires efficient treatment. Discoloration of teeth can be extrinsic or intrinsic or a combination of both based on etiology, appearance, localization, and severity. Walking bleach involves the use of chemical substances like sodium perborate or hydrogen peroxide which in contact with the tooth release oxidizing agents that diffuse through the enamel and dentin and oxidize the pigments responsible for discoloration. This article aims at presenting a case series on the walking bleach method performed on discolored endodontically treated teeth associated with superior esthetic outcomes.

An in-vitro Comparison of the Bleaching Efficacy of 35 Percent Carbamide Peroxide with Established Intracoronal Bleaching Agents

2020 ◽  
Author(s):  
Nandita Bansal
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Perborate ◽  
Distilled Water ◽  
Carbamide Peroxide ◽  
Human Teeth ◽  
Anterior Teeth ◽  
Group I ◽  
Group Ii ◽  
Control Evaluation

Introduction: Intracoronal bleaching is the simplest, least invasive, and least expensive means available to lighten non-vital discolored teeth. The objective of the study: To evaluate the intra coronal bleaching efficacy of 35% Carbamide peroxide relative to 35% Hydrogen peroxide and Sodium perborate using artificially stained extracted human teeth. Materials and Methods: Eighty extracted human permanent maxillary and mandibular anterior teeth and single-rooted premolars were artificially stained using whole human blood and root canal treatment was completed. They were bleached twice 7 days apart using: Group I (n=20) – 35% Carbamide peroxide gel, Group II (n=20) – 35% Hydrogen peroxide gel, Group III (n=20) – 2 gm Sodium perborate mixed with per ml of distilled water, Group IV (n=20)– Distilled water only (control). Evaluation of shade was performed on day 0,7,14. Results: On day 7, In Groups I and Group II, there was a reduction in the shade by 2 vita tab positions, whereas Group IIIlightened by 1-tab position only. On day 14, CP and HP lightened by overall 3-tab positions and SP by 2-tab positions. There were no statistical differences between the groups on day 7 and day 14. Conclusion: 35% Carbamide peroxide, 35% Hydrogen peroxide and Sodiumperborate were equally effective for Intra coronal bleaching.

scholarly journals Fracture resistance of endodontically-treated teeth submitted to bleaching treatment with hydrogen peroxide and titanium dioxide nanoparticles photoactivated by LED-laser

2014 ◽  
Vol 43 (3) ◽  
pp. 153-157
Author(s):  
Keren Cristina JORDÃO-BASSO ◽  
Carolina ANDOLFATTO ◽  
Milton Carlos KUGA ◽  
Gisselle Moraima CHÁVEZ-ANDRADE ◽  
Norberto Batista de FARIA-JÚNIOR ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Titanium Dioxide ◽  
Fracture Resistance ◽  
Titanium Dioxide Nanoparticles ◽  
Testing Machine ◽  
Compressive Load ◽  
Sodium Perborate ◽  
Pulp Chamber ◽  
Endodontically Treated Teeth ◽  
Bleaching Treatment

Objective: The aim of this study was evaluate the fracture resistance of endodontically-treated teeth after bleaching treatment using 15% hydrogen peroxide plus titanium dioxide nanoparticles (15HPTiO2) photoactivated by LED-laser, in comparison with protocols using 35% hydrogen peroxide (35HP), 37% carbamide peroxide (37CP) or sodium perborate (SP). Material and method: After endodontic treatment, fifty bovine extracted incisors were divided into five groups (n = 10): G1- without bleaching; G2- 35HP; G3- 37CP; G4- 15HPTiO2 photoactivated by LED-laser and G5- SP. In G2 and G4, the bleaching protocol was applied in 4 sessions, with a 7 day interval between each session. In G3 and G5, the materials were kept in the pulp chamber for 21 days, but replaced every 7 days. After 21 days, the crowns were subjected to compressive load at a cross head speed of 0.5 mm/min, applied at 135° to the long axis of the root using an eletromechanical testing machine, until fracture. The data were submitted to ANOVA and Tukey tests (p = 0.05). Result: The bleaching treatment in endodontically-treated teeth with 15HP plus TiO2 nanoparticles and photoactivated by LED-laser caused reduction of the fracture resistance similarly provided by 35HP, 37CP or SP (p>0.05). All bleaching treatments reduced the fracture resistance compared to unbleached teeth (p<0.05). Conclusion: All bleaching protocols reduced the fracture resistance of endodontically-treated teeth, but there were no differences between each other.

Management of Discolored Tooth with separated Instrument

2017 ◽  
Vol 2 (1) ◽  
pp. 36-39
Author(s):  
Aadit Anilkumar ◽  
Faisal Nazar ◽  
Ratheesh Rajendran
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrogen Sulfide ◽  
Root Canal ◽  
Iron Sulfide ◽  
Tooth Bleaching ◽  
Sodium Perborate ◽  
Root Canal Preparation ◽  
Tooth Structure ◽  
Tooth Discoloration ◽  
The Common

ABSTRACT Tooth discoloration commonly occurs after trauma to tooth, which leads to pulpal injury. Trauma to the pulpal blood vessel leads to hemorrhage and releases iron from hemoglobin. The iron which is released from hemoglobin combines with hydrogen sulfide to form iron sulfide, which gives the tooth its characteristic dark appearance. Tooth discoloration can be treated by nonvital tooth bleaching, if the tooth structure is intact. A combination of hydrogen peroxide and sodium perborate reduces the discoloration of the tooth by a process of oxidation. During root canal preparation procedures, the common mishap that occurs is instrument separation inside the root canal. The fractured fragment in the root canal can hinder proper preparation of root canal space. Continuous pain or discomfort may result if it is not removed or bypassed. It is more conservative to bypass the fractured instrument, particularly in cases where access to the fragment is restricted (apical one-third of canal or beyond the canal curvature) and its removal may lead to excessive removal of dentin with associated sequelae. How to cite this article Rajendran R, Nair KR, Kuriakose MC, Anilkumar A, Nazar F. Management of Discolored Tooth with separated Instrument. Cons Dent Endod J 2017;2(1):36-39.

scholarly journals Management of non-vital maxillary central incisor with intrinsic discoloration using walking bleach technique

2021 ◽  
Vol 6 (3) ◽  
pp. 181-184
Author(s):  
Manish Sundesha
Keyword(s):  
Hydrogen Peroxide ◽  
Glass Ionomer Cement ◽  
Invasive Procedure ◽  
Invasive Technique ◽  
Sodium Perborate ◽  
Barrier Material ◽  
Maxillary Central Incisor ◽  
Non Invasive ◽  
Anterior Teeth ◽  
Ionomer Cement

Non-vital bleaching is a non-invasive technique for the treatment of intrinsic discoloration of teeth. Hydrogen peroxide and sodium perborate are commonly used bleaching agents. The aim of this case report is to demonstrate the non-vital bleaching technique in maxillary anterior teeth. Maxillary central incisors were isolated and root canal treatment was performed. Barrier space preparation was done using a heated instrument. Glass ionomer cement was used a barrier material. Mixture of hydrogen peroxide was placed in the canal and sealed with intermediate restorative material. After 1 week, the procedure was repeated to achieve the desired results. Non-vital bleaching is a minimally invasive procedure to restore the esthetics of a discoloured non-vital tooth. However, care should be taken to prevent any post-operative complications.

scholarly journals CLAREAMENTO DENTAL EM PACIENTES COM HIPERSENSIBILIDADE: SÉRIE DE CASOS

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Sara Souza Castro ◽  
Clara Lemos Leal ◽  
Saryta Argolo ◽  
Juliana Felippi Azevedo ◽  
Paula Mathias ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Case Series ◽  
Potassium Nitrate ◽  
Tooth Bleaching ◽  
Dentin Hypersensitivity ◽  
Tooth Discoloration ◽  
Dentin Sensitivity ◽  
Clinical Cases

The possibility of pain resultant from tooth bleaching can limit the indication of this treatment in patients with pre-existing dentin hypersensitivity. Purpose: To provide a case series with alternatives for tooth bleaching that might reduce the pos-operative sensibility. Description of cases: Three patients with dentin sensitivity and complaining of tooth discoloration were selected. For each patient, a technique for tooth bleaching was randomly selected; using 15-35% hydrogen peroxide, and application of an desensitizing agent before or after the bleaching (toothpaste or 2% potassium nitrate). Conclusion: Bleaching was successfully performed in the three clinical cases. However, the previous desensitization using the toothpaste resulted in greater comfort for the patient.

scholarly journals The efficacy of “walking” bleach technique in endodontically treated teeth: Case report

2011 ◽  
Vol 58 (3) ◽  
pp. 163-167
Author(s):  
Tatjana Savic-Stankovic ◽  
Milica Popovic ◽  
Branislav Karadzic
Keyword(s):  
Hydrogen Peroxide ◽  
Case Report ◽  
Total Duration ◽  
Anterior Region ◽  
Sodium Perborate ◽  
Central Incisor ◽  
Endodontically Treated Teeth ◽  
Duration Of Therapy ◽  
Endodontically Treated Tooth

Introduction. Discolored teeth in the anterior region can cause considerable cosmetic impairment. One of the techniques commonly used for bleaching endodontically treated teeth is ?walking? bleach technique, which in many cases provides satisfying results. The aim of this study was to evaluate bleaching efficacy of ?walking? bleach technique in an endodontically treated tooth. Case Report. A 22-year-old patient showed up to the clinic because of discoloration of the maxillary right central incisor. The mixture of sodium perborate and 30% hydrogen peroxide was applied and changed weekly. The total duration of therapy was 28 days. At the end of therapy, the tooth achieved 3 shades lighter color. Conclusion. The mixture of sodium perborate and 30% hydrogen peroxide can successfully bleach discolored endodontically treated teeth.

scholarly journals Spectrophotometric analysis of internal bleaching of traumatized teeth with coronal discoloration following regenerative endodontic procedures

2021 ◽  
Vol 21 ◽  
pp. e225232
Author(s):  
Jaqueline Lazzari ◽  
Walbert Vieira ◽  
Vanessa Pecorari ◽  
Brenda Paula Figueiredo de Almeida Gomes ◽  
José Flávio Affonso de Almeida ◽  
...  
Keyword(s):  
Descriptive Analysis ◽  
Case Series ◽  
Spectrophotometric Analysis ◽  
Sodium Perborate ◽  
Distilled Water ◽  
Bleaching Agent ◽  
Anterior Teeth ◽  
Triple Antibiotic Paste ◽  
Color Differences ◽  
Chlorhexidine Gel

Aim: The objective of this study was to describe a case series concerning internal bleaching of anterior traumatized teeth that underwent regenerative endodontic procedures (REP). Methods: Seven non-vital maxillary anterior teeth discolored after regenerative endodontic procedures were included and divided into two groups according to the medication protocol used in the REP: (1) Triple antibiotic paste (TAP) group (n=4); (2) Calcium hydroxide and 2% chlorhexidine gel (HC+CHX) (n=3). The bleaching technique used was walking bleach, where sodium perborate associated with distilled water was used. Bleaching agent was replaced weekly until the darkened tooth was slightly lighter than the adjacent tooth. The color was recorded with the aid of a digital spectrophotometer in two moments (T1: prior the first session of bleaching, T2: fourteen days after the last session of bleaching). The change in color after the procedure (ΔE) was calculated and reported in a descriptive analysis. Results: The ΔE for all teeth showed color differences exceeding the perceptibility threshold (ΔE > 3.7). Both groups showed similar ΔE (TAP: 18.3 ± 11.5; HC+CHX: 14 ± 11.2) at the end of the treatment. The average number of sessions needed to achieve satisfactory results was 1.7 ± 0.6 for HC+CHX group and 2.3 ± 0.5 for TAP group. Conclusion: Internal bleaching with sodium perborate associated with distilled water is effective in treating discolored teeth after regenerative endodontic procedures.

scholarly journals Fracture Resistance of Teeth Submitted to Several Internal Bleaching Protocols

2014 ◽  
Vol 15 (2) ◽  
pp. 186-189 ◽  
Author(s):  
Renato de Toledo Leonardo ◽  
Edson Alves de Campos ◽  
Katia Cristina Keine ◽  
Milton Carlos Kuga ◽  
Flávia Angélica Guiotti ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Titanium Dioxide ◽  
Clinical Significance ◽  
Fracture Resistance ◽  
Titanium Dioxide Nanoparticles ◽  
Testing Machine ◽  
Compressive Load ◽  
Sodium Perborate ◽  
Carbamide Peroxide ◽  
Endodontically Treated Teeth

ABSTRACT Aim The aim of this study was to evaluate the fracture resistance of teeth submitted to several internal bleaching protocols using 35% hydrogen peroxide (35HP), 37% carbamide peroxide (37CP), 15% hydrogen peroxide with titanium dioxide nanoparticles (15HPTiO2) photoactivated by LED-laser or sodium perborate (SP). Materials and methods After endodontic treatment, fifty bovine extracted teeth were divided into five groups (n = 10): G1—unbleached; G2—35HP; G3—37CP; G4—15HPTiO2 photoactivated by LED-laser and G5—SP. In the G2 and G4, the bleaching protocol was applied in 4 sessions, with 7 days intervals between each session. In the G3 and G5, the materials were kept in the pulp teeth for 21 days, but replaced every 7 days. After 21 days, the teeth were subjected to compressive load at a cross head speed of 0.5 mm/min, applied at 135° to the long axis of the root using an eletromechanical testing machine, until teeth fracture. The data were submitted to ANOVA and Tukey tests (á = 5%). Results The 35HP, 37CP, 15HPTiO2 and SP showed similar fracture resistance teeth reduction (p > 0.05). All bleaching treatments reduced the fracture resistance compared to unbleached teeth (p < 0.05). Conclusion All bleaching protocols reduced the fracture resistance of endodontically-treated teeth, but there were no differences between each other. Clinical significance There are several internal bleaching protocols using hydrogen peroxide in different concentrations and activation methods. This study evaluated its effects on fracture resistance in endodontically-treated teeth. How to cite this article de Toledo Leonardo R, Kuga MC, Guiotti FA, Andolfatto C, de Faria-Júnior NB, de Campos EA, Keine KC, Dantas AAR. Fracture Resistance of Teeth Submitted to Several Internal Bleaching Protocols. J Contemp Dent Pract 2014;15(2):186-189.

High Glucose Affects the Cytotoxic Potential of Rapamycin, Metformin and Hydrogen Peroxide in Cultured Human Mesenchymal Stem Cells

2019 ◽  
Vol 19 (9) ◽  
pp. 688-698 ◽  
Author(s):  
Azam Roohi ◽  
Mahin Nikougoftar ◽  
Hamed Montazeri ◽  
Shadisadat Navabi ◽  
Fazel Shokri ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Hydrogen Peroxide ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Cell Viability ◽  
High Glucose ◽  
Cell Cycle Distribution ◽  
Efficient Treatment ◽  
Chronic Hyperglycemia ◽  
Placental Mesenchymal Stem Cells

Background: Oxidative stress and chronic hyperglycemia are two major side effects of type 2 diabetes affecting all cell types including mesenchymal stem cells (MSCs). As a cell therapy choice, understanding the behavior of MSCs will provide crucial information for efficient treatment. Methods: Placental mesenchymal stem cells were treated with various concentrations of glucose, metformin, rapamycin, and hydrogen peroxide to monitor their viability and cell cycle distribution. Cellular viability was examined via the MTT assay. Cell cycle distribution was studied by propidium iodide staining and apoptosis was determined using Annexin Vpropidium iodide staining and flow cytometry. Involvement of potential signaling pathways was evaluated by Western blotting for activation of Akt, P70S6K, and AMPK. Results: The results indicated that high glucose augmented cell viability and reduced metformin toxic potential. However, the hydrogen peroxide and rapamycin toxicities were exacerbated. Conclusion: Our findings suggest that high glucose concentration has a major effect on placental mesenchymal stem cell viability in the presence of rapamycin, metformin and hydrogen peroxide in culture.

scholarly journals Aferição do pH de diferentes agentes clareadores indicados para o clareamento intracoronário

2018 ◽  
Author(s):  
João Felipe Besegato ◽  
Gabriela Dos Santos Ribeiro Rocha ◽  
Marlene De Sousa Amorim ◽  
Fabio Martins Salomão ◽  
Daniel Poletto ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Statistical Analysis ◽  
Multiple Comparisons ◽  
The Other ◽  
Sodium Perborate ◽  
Distilled Water ◽  
Friedman Test ◽  
Time Intervals ◽  
Ph Values ◽  
Evaluation Time

Objective: to measure pH values of bleaching agents that are indicated to intracoronal bleaching technique in different time intervals. Methods: Each group (G) received five samples (n=5): G1 – distilled water (AD); G2 – hydrogen peroxide (H2O2) 30%; G3 – sodium perborate (PbS) + AD; G4 – PbS + H2O2 30%; G5 – sodium percarbonate (PcS) + AD; and G6 – PcS + H2O2 30%. pH values were stated using a digital pHmeter, in different time intervals: immediately after handling (T0), 24 hours (T1) and 168 hours after handling (T2). The results were submitted to statistical analysis through Kruskal-Wallis and Mann Whitney tests, in this order, allowing multiple comparisons among the groups. To verify the effect of time in each group, Friedman test was applied. Results: In the evaluation of the effect of time in each group, it was observed that G2 presented acid behavior, while the other groups exhibited values close to neutrality or alkaline. Conclusions: H2O2 30% was the only agent that showed acidic behavior in every evaluation time. Meanwhile, PcS + H2O had the highest pH values.

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