Whitening Treatment Research Articles

Dental bleaching: patient perception and satisfaction.

Teeth bleaching is a common practice performed by dental hygienists and dentists to correct aesthetic problems due to dental discoloration. Patients' opinions on this procedure may be different according to their personal experiences, expectations and individual sensitivities. The aim of this study is to assess the degree of satisfaction and related sensitivity of patients to professional and home bleaching treatment. A questionnaire consisting of 12 multiple-choice questions was submitted to 625 subjects among general population. These were related to: 1) patient's age and whether the patient is a smoker; 2) personal satisfaction; and 3) post-treatment tooth sensitivity. Descriptive analyses of all variables in the questionnaire were performed, and statistical analyses between variables were carried out by Chi-square test and Fisher's Exact test. Of the people surveyed, 66% performed home bleaching, while the remaining performed the treatment in a dental office. Thirty-three percent of patients had previously undergone teeth bleaching and the 95.7% stated that they were satisfied with the treatment. Of these, only 36.4% reported experiencing postoperative hypersensitivity. Most patients (91.3%) received professional scaling before undergoing bleaching treatment. Patient satisfaction with tooth whitening treatment can vary from patient to patient and represents a strong indicator of treatment efficacy and suitability. A proper communication, careful management and individualized patient assessment are key to maximizing satisfaction and ensuring a positive and fulfilling patient experience.

Different effects of whitening treatment on natural teeth and teeth treated with Icon resin: an experimental study in vitro.

It is quite common for white spots to develop on a tooth, due sometimes to a defective formation of the enamel layer, and sometimes to patches of demineralisation as a result of poor oral hygiene during orthodontic treatment with fixed braces. ICON DMG is currently the only noninvasive treatment for white spots. After a preliminary etching, it infiltrates the enamel, filling the spaces between the prisms with a resinous material that has a refraction coefficient very similar to that of healthy tooth enamel. The aim of this study was to test the efficacy of professional whitening procedures on teeth previously treated with ICON. The study hypothesis was that infiltration with ICON resin creates a barrier capable of preventing the bleaching action of the whitening agent. White spots were artificially created on one half of the vestibular surface of 12 human teeth, while the other half was protected with a composite adhesive. The white spots were infiltrated with ICON and the protective adhesive was subsequently removed. A professional teeth whitening procedure was then completed on both halves of the teeth. A statistical analysis was performed to compare spectrophotometric recordings obtained before and after the ICON infiltration and teeth whitening procedures. The whitening procedure modified the colour of the teeth on the half not infiltrated with ICON (p<0.05), but there was no statistically significant change in colour on the half infiltrated with ICON. The presence of the ICON resin seems to act as a partial barrier to the action of the whitening agent.

The Effect of 100% Watermelon (Citrullus lanatus) Extract on Tooth Discoloration with Rub Techniques

Tooth color can change because of several factors that are needed for teeth whitening. Teeth whitening can be performed on vital and non-vital teeth. Home bleaching is a vital whitening treatment that many people choose because practice can be done at home. Bleaching agent used for home bleaching techniques is 10% -22% carbamide peroxide. However, carbamide peroxide has side effects on the oral cavity. So, several previous researches have examined natural ingredients that contain the ability to whiten teeth. One of them is 100% watermelon extract which is proven to whitenteeth by immersing. However, this method cannot be applied clinically, so the purpose of this research is to know the effect of watermelon extract on tooth discoloration with rub techniques application. This type of research is an experimental laboratory. 10 maxillary premolars were discolored which were divided into two groups (watermelon extract and 10% carbamide peroxide). Each group was given the treatment 3 hours per-day for 14 days. After the bleaching process, the teeth are cleaned and immersed in a solution of saliva. Before and after bleaching, they were measured with a shade guide and spectrophotometer. Data analysis used paired t-test and wilcoxon. The results of paired t-test on group 1 p=0.024 (p &lt;0.05). The wilcoxon test results on group 2 with p=0.043 (p &lt;0.05). Both have influence, but the application of 10% watermelon extract is lower than 10% carbamide peroxide. It can be concluded: 100% watermelon extract with rubbing techniques has an effect on teeth whitening. Although, lower than 10% carbamide peroxide

Major clinical approaches to tooth whitening techniques and differences in terms of sensitivity and protection: a systematic review

Introduction: Tooth whitening is an initial step in the analysis and reproduction of the aesthetics of the smile, so the dentist must know how to diagnose the causes of color changes, and recommend whitening before proposing the appropriate dental procedure. With technological advances, tooth whitening techniques have emerged to facilitate their use improve comfort and safety, and reduce time spent performing the technique. The conventional means of external tooth whitening is with carbamide peroxides or light-activated hydrogen or not. However, both at-home and in-office whitening procedures cause tooth sensitivity. There is a new whitening proposal on the market without the use of whitening gels, thus reducing post-treatment sensitivity. This proposal highlights ultraviolet light as a whitening agent. Objective: It was to carry out a concise systematic review of the main clinical approaches to tooth whitening techniques, to point out the differences between them in terms of sensitivity and tooth protection. Methods: The PRISMA Platform systematic review rules were followed. The search was carried out from January to February 2024 in the Scopus, PubMed, Science Direct, Scielo, and Google Scholar databases. The quality of the studies was based on the GRADE instrument and the risk of bias was analyzed according to the Cochrane instrument. Results and Conclusion: A total of 178 articles were found, 40 articles were evaluated in full and 20 were included and developed in the present systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 21 studies with a high risk of bias and 31 studies that did not meet GRADE and AMSTAR-2. Most studies did not show homogeneity in their results, with X2=67.4%&gt;50%. It was concluded that tooth whitening can be indicated in practically all situations in which tooth darkening occurs, such as pulp tissue decomposition, internal hemorrhage, trauma, use of medications, restorative materials, and systemic conditions such as fluorosis, jaundice, and fetal erythroblastosis, among others. others. Contraindications for tooth whitening treatment occur in children under 10 years of age. Whitening using the home technique uses products with lower concentrations, between 10% and 22% carbamide peroxide. In-office, 16% carbamide peroxide was effective. In office-based tooth whitening, higher concentrations of whitening substances are used and laser, LED, ultraviolet, and halogen light can be used to intensify the whitening process. Patients undergoing vital teeth whitening report sensitivity or discomfort during treatment. Oxidative stress generated by bleaching agents can cause apoptosis and damage to periodontium DNA (genotoxicity) and cellular cytotoxicity. A new generation of whitening agents with low concentrations of hydrogen peroxide (3.5% and 15%) was introduced on the market for in-office teeth whitening, aiming to achieve greater safety and efficiency in tooth whitening.

Role of induced nitric oxide synthases in orofacial nociception/discomfort after dental tooth bleaching with hydrogen peroxide

ObjectiveTo evaluate the role of induced nitric oxide synthase (iNOS) in nociception/orofacial discomfort in rats submitted to tooth whitening with hydrogen peroxide (H₂O₂). Design:Wistar rats were divided into three groups (n = 24/group): a sham group not submitted to whitening treatment, a saline group submitted to whitening treatment, and a test group submitted to whitening treatment and blockade of iNOS with aminoguanidine 50 mg/kg/day. After 24 and 48 h, and 7 days, the animals were euthanized to collect trigeminal ganglia and maxillae to histomorphometric analysis (size of neuronal bodies and percentage of pulp area filled by vessels) and behavior/nociception (Grimace scales, scratching and biting counting, weight loss and nociception assay). ANOVA-1- or − 2-way tests were used (p < 0.05, GraphPadPrism 5.0). Results:The aminoguanidine-treated group showed a reduction in nociceptive threshold in the masseteric region (p < 0.001), Grimace scale scores (p < 0.001), number of scratching (p = 0.011) and body mass loss (p = 0.007). After 24 and 48 h of tooth bleaching, the saline group showed a significant increase in the mean area of the blood vessels (p = 0.020) and iNOS immunostaining in odontoblasts (p = 0.002) and non-odontoblasts cells (p = 0.025). Aminoguanidine reversed both increases. Tooth bleaching reduced the mean area of neuronal bodies, and aminoguanidine significantly reversed it (p = 0.019), but an increase in GFAP immunostaining in neuronal bodies did not reduce after seven-days or after aminoguanidine treatment (p = 0.003). Conclusion:iNOS blockage by aminoguanidine plays an important role in nociception and orofacial discomfort by control of inflammation in dental pulp after tooth bleaching with hydrogen peroxide (H₂O₂) 35%.

Whitening efficacy of activated charcoal-based products: A single-blind randomized controlled clinical trial

ObjectiveThis randomized controlled clinical trial evaluated the whitening efficacy, tooth sensitivity (TS), and volunteers’ satisfaction following the use of activated charcoal powder and toothpaste. MethodsFifty-six volunteers were randomly allocated into 4 groups (n = 14) according to a 14-day toothbrushing or whitening treatment with activated charcoal powder (ACPW), activated charcoal toothpaste (ACT), regular fluoridated toothpaste (RT), and 10 % carbamide peroxide (CP). Objective (ΔE00) and subjective (ΔSGU) color and whiteness index (ΔWID) changes were calculated. Patients self-reported the risk and intensity of TS using a visual analogue scale and the volunteer's satisfaction was determined by a questionnaire. Color assessments were analyzed by Kruskal-Wallis followed by Dwas-Steel-Crithlow-Fligner, and absolute TS risk and volunteer's satisfaction by Fisher exact test (p < 0.05). ResultsACPW and ACT promoted similar effects in ΔE00, ΔSGU, and ΔWID to that observed for RT. No significant difference was found in terms of TS risk intensity. TS risk became high after 7 and 14 days, with higher TS prevalence in CP. Volunteers reported that ACPW exhibited the lowest ease-of-use, comfort, and whitening satisfaction among groups (p < 0.05). ConclusionActivated charcoal-based products presented a minor and unsatisfactory whitening effect while CP resulted in optimal tooth whitening and the highest level of satisfaction among volunteers. Risk was higher from 7 days onwards and was more pronounced in the CP. Clinical relevanceBased on the whitening effect and patient satisfaction, this controlled-randomized clinical evidence supports that the use of activated charcoal-based products should be discouraged.

Characterizing Nanoparticle Isolated by Yam Bean (Pachyrhizus erosus) as a Potential Agent for Nanocosmetics: An in vitro and in vivo Approaches.

This study investigated the potential of Plant-Derived Exosome-Like Nanoparticles (PDENs) as cosmeceutical nanocarriers for treating skin problems, such as scar removal, face rejuvenation, anti-aging, and anti-pigmentation. Researchers isolated PDENs from Yam Bean (Pachyrhizus erosus) using PEG-based precipitation, gradual filtration, and various centrifugations at low temperatures. Followed by in vitro and in vivo studies using HDF cells and Zebrafish. The morphology of the YB-PDENs was determined using TEM analysis, they had a spherical shape with diameters of 236,83 ± 9,27nm according to PSA. The study found that YB-PDENs were stable in aquabidest at 4°C for one month of storage and had ~-26,5 mV of Zeta Potential. The concentration of YB-PDENs was measured using the BCA Assay, and internalization of YB-PDENs to HDF cells was observed using a Confocal Laser Scanning Microscope labelled with PKH67. As for cytotoxicity, after 24 and 72 hours of incubation with YB-PDENs, the viability of HDF cells remained more than 80%. The study also examined cell migration using the Scratch Assay and found that at 2,5 μg/mL, YB-PDENs had better migration results than other concentrations. Immunocytochemistry showed that collagen expression was higher after 14 days of incubation with YB-PDENs, and melanocytes in zebrafish decreased at each concentration compared with controls. In conclusion, this study is the first to extract and describe PDENs from Yam Bean (Pachyrhizus erosus), with YB-PDENs having a promising anti-melanogenic effect in skin treatment. This study highlights the potential of YB-PDENs as a promising alternative to depigmentation and skin whitening treatments.

Ion Release from Stainless Steel Brackets Subjected to Tooth Bleaching Treatment.

Tooth discoloration in the form of staining is a common finding during conventional orthodontic treatment. Due to elevated esthetic standards, clinicians in the field of orthodontics are faced with increasing demands by patients to perform bleaching treatments while the appliances are still in place. Though the success of such treatments has been reported in literature, the effect of whitening agents on orthodontic appliances has not been evaluated. Increased ion release following corrosion of orthodontic brackets is considered a health hazard. In this study, we measured the amount of ion release from steel brackets under home and office bleaching treatment in order to evaluate the safety of such treatments during orthodontic therapy. In this experimental study, a total of 120 brackets were randomly divided into 3 groups. The first group was subjected to an office bleaching regimen (hydrogen peroxide 40%). The second group was subjected to a home bleaching treatment (carbamide peroxide 20%). The third group did not receive any bleaching treatment. The specimens of all groups were immersed in artificial saliva and after 30 days, the amount of released chromium, copper, iron, magnesium, and nickel ions was measured and compared using one way ANOVA. The results showed that ion release was significantly different between the three groups (pValue >0.05). For the chromium, iron, magnesium, and Nickel ion release the order was as follows: no bleaching < home bleaching < office bleaching. However, the copper ion release was greater in the group that received home bleaching. Ion release was enhanced when bleaching treatments were performed, with office bleaching having a more significant effect. Although the amounts of released ions were less than those permitted by WHO, we suggest that the clinicians recommend home bleaching for orthodontic patients that are seeking tooth whitening treatment.

The optimization of whiteness of polyester fabric treated with nanoparticles of 2,2′-(vinylenedi-p-phenylene)bis-benzoxazole (OB-1) by the Taguchi method

This study explores a new approach to achieve a whitening effect on polyester fabric by utilizing a ground form of raw OB-1 (OB-1-G) in combination with dispersing agents. The whitening process parameters, such as whitening temperature, OB-1-G mass, and whitening time were optimized using the L16 orthogonal array-based Taguchi methodology. The signal-to-noise ratio was carried out through a larger-is-better approach to augment the parameter responses, specifically the whiteness. The results suggest that the degree of whiteness of polyester fabric is significantly affected by the whitening treatment temperature (P < 0.05), with a contribution percentage of 93.87%. A whiteness index of 94.12 was achieved for the polyester fabric treated at the optimized conditions. The fabric treated with OB-1-G at the optimized conditions was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The investigation also included the correlation between the length of time spent in washing and rubbing, and their efficacy in achieving whitening outcomes. The research demonstrated the effectiveness of OB-1-G nanopowder in combination with dispersing agents as a fluorescent optical brightener for the optical brightening of polyester fiber with potential use in the textile industry on a larger scale.

Ozone gas therapy for tooth bleaching preserves enamel microhardness, roughness and surface micromor.

Bovine enamel blocks were planed and distributed among the following three bleaching treatment groups (n=10): CP - 1 hour per day/14 days (Opalescence PF 10%/ Ultradent); O - 1 hour per day every 3 days/3 sessions (Medplus V Philozon, 60 mcg/mL and oxygen flow rate of 1 L/min); and OCP - CP with O, 1 hour per day every 3 days/3 sessions. Enamel surface microhardness (Knoop), roughness (Ra), and micromorphology by scanning electron microscopy (5,000x magnification) were determined before and after the treatments. ANOVA and Tukey-Kramer’s test showed that enamel microhardness remained unchanged by treatment with O and OCP (p=0.0087), but decreased by treatment with CP. Treatment with O promoted higher enamel microhardness than the other groups (p=0.0169). Generalized linear mixed models for repeated measures over time indicated treatment with CP increased enamel roughness more than OCP or O (p=0.0003). CP produced slight irregularities in enamel micromorphology after the whitening treatment. O, with or without CP, maintained the mechanical and physical properties of microhardness and enamel surface micromorphology, and either maintained or reduced surface roughness, compared to the conventional tray-delivered CP bleaching treatment. Treatment with 10% carbamide peroxide in trays promoted greater changes in enamel surface properties than treatments with ozone and with 10% ozonized carbamide peroxide in the office.

An exciting, motivational whitening treatment

An exciting, motivational whitening treatment

Dental sensitivity in tooth whitening and its relationship to peroxides concentrations: a cross-sectional retrospective study

Background: Dental sensitivity is a common secondary effect related to vital tooth whitening (VTW) treatment and it’s associated with the concentrations and time of application of the bleaching agents. The aim of this research was to evaluate the relationship of dental sensitivity and the combinations of different concentrations of peroxides [hydrogen peroxide (HP) 10%/HP 40%] in order to define a tooth whitening protocol that is effective, while minimizing the discomfort experienced by patients.

Color Stability of Polymer-Based Composite CAD/CAM Blocks: A Systematic Review.

This systematic review aims to evaluate the color stability of resin composite CAD/CAM blocks (CCB) when submitted to staining solutions. A systematic search was performed on different databases (Embase, Medline, Scopus, Web of Science). Search terms were: 'polymer infiltrated', 'polymer-based', 'resin nanoceramic', 'resin ceramic', 'hybrid composite', 'hybrid ceramic', 'composite ceramic', 'resin infiltrated', 'CAD-CAM', 'CAD/CAM', 'color stability', 'staining', 'staining susceptibility', 'color change', 'color difference'. in vitro articles published in the English language until 18 September 2022 without initial time restriction evaluating the color stability of CCB when submitted to staining solutions. studies investigating color change induced by smoke or whitening treatments; studies not including a clinical evaluation of the results using the thresholds for color perceptibility and acceptability. Risk of bias assessment using the QUIN tool. Out of the 378 initially retrieved articles, 19 were included in this review. They investigated 17 different CCBs and different artificial staining by liquid protocols, including coffee, red wine, tea, and cola. CCBs exceeded clinical acceptability thresholds for color shift in 18 out of 19 studies, with a significantly higher color stability than conventional hybrid resin-based composites (RBCs), and a significantly lower color stability than ceramic materials. The identified differences in CCBs in color stability can be attributed to the material's composition, but also to the heterogeneity of staining procedures. Interpretation and clinical implication: Clinicians should be aware that, although to a lower degree when compared to RBCs used in direct or indirect procedures, CCBs undergo color changes to a higher degree in comparison to ceramic materials.

Potency of Acid Content in Local and Imported Strawberry Fruit Extract (Fragaria X Ananassa) as Natural Ingredients for Teeth Whitening

Background: Bleaching treatment is a whitening treatment for discolored teeth to restore their aesthetic function. The bleaching agent that is commonly used is 35% carbamide peroxide. Strawberries contain malic acid which can whiten teeth. Purpose: This study aims to find out acid potential on strawberries as a natural ingredient for teeth whitening. Methods: 48 post-extraction permanent single-rooted teeth that had been coated with clear nail polish were soaked in black coffee for 2 days, then 16 teeth were immersed in a local strawberry extract solution, 16 teeth were immersed in an imported strawberry extract solution and the other 16 teeth were immersed in a 35% carbamide peroxide gel solution and then observed and measured the color of the teeth after immersion at 24 hours and 48 hours. Results: There is potential for local and imported strawberry fruit extract in whitening teeth but the whitening potential when compared to carbamide peroxide is not significant (p&gt;0.05). The whitening potential of imported strawberry juice is higher than that of local strawberry juice based on the average value. Conclusion: Based on research results, local and imported strawberry juice extracts have the potential to whiten discolored teeth.

Does the application of whitening dentifrices during at-home bleaching affect the bond strength of resin composite to dentin?

AimThis study aimed to evaluate the effect of using whitening dentifrices during at-home bleaching on the shear bond strength (SBS) of resin composite to dentin, and investigate whether the increased polymerization time would improve SBS.MethodsNinety-six bovine incisors were divided into 4 groups of 24, according to the whitening treatment applied as follows: group 1, at-home bleaching + brushing with a regular dentifrice; group 2, at-home bleaching + brushing with a whitening dentifrice containing ozone; group 3, at-home bleaching + brushing with a commercial whitening dentifrice; and group 4 (control), no whitening/brushing treatment. Each group was divided into two subgroups (n = 12) to assess the effect of curing time (20 versus 80 s) on SBS. A self-etch adhesive was bonded to dentin, and after 2-day water storage, SBS was determined.ResultsSBS was significantly affected by the whitening treatment (P = 0.03), but increasing the curing time had no significant effect on SBS (P = 0.137). Bond strength in group 1 was comparable to the control group (P > 0.05). The specimens in group 3 displayed significantly lower SBS than either group 4 or group 1 (P > 0.05). No significant difference was observed between the SBS of group 2 compared to any other group (P > 0.05). There was no significant association between the treatment group and failure type (P > 0.05).ConclusionThe bonding interface was not negatively influenced by the at-home bleaching procedure. However, using a commercial whitening dentifrice during at-home bleaching produced a significant detrimental effect on SBS. Extending the curing time would have no beneficial effect on adhesion to a whitened dental substrate.

The effect of immersion in beverages and dental bleaching agents on the surface roughness of resin composites

Introduction: Composite materials may be exposed to chemicals in food and beverages in the oral cavity, which can lead to changes in surface roughness. The aim of this in vitro study was to evaluate the surface roughness of two restorative materials after exposure to coffee and green tea followed by a dental bleaching procedure. Methods: For nanofilled composite and microhybrid composite, 15 samples each were fabricated. Five specimens from each composite were stored in instant coffee and green tea for 4 h a day. After 30 days of immersion, specimens received dental at-home bleaching, using 16% carbamide peroxide (CP), for 7 h a day. The control group was stored in deionized water for 30 days. Surface roughness was determined by profilometry 24 h after polymerization, after 30 days of immersion, and after bleaching. The data were analyzed using a t-test for paired samples and mixed analysis of variance, at a 0.05 significance level. Results: Neither beverages nor CP treatment significantly altered the surface roughness of the composites. There was no difference between the tested composite materials regarding roughness. Conclusion: Surface roughness of the microhybrid and nanohybrid composites was not modified by coffee, green tea, and subsequent whitening treatment.

Effectiveness of Adding Home Bleaching Time With 10% Carbamide Peroxide : Literature Review

Changes in the color of teeth to become darker are a lot of complaints by the public. Bleaching is a whitening treatment for teeth that have changed color. Home bleaching is a bleaching that can be done at home under the supervision of a dentist using 10% carbamide peroxide for a period of more than 2 weeks. The purpose of this study was to determine the effectiveness of 10% carbamide peroxide as a home bleaching agent with an extended period of time against tooth discoloration. This type of research is Literature Review using Google Scholar, Web of Science, and Pubmed using keywords that have been carried out, obtaining 9 articles that match the research criteria. The results showed that 10% carbamide peroxide with an application of more than 2 weeks gave effective and stable results, but the effect was also greater. The use of 10% carbamide peroxide as a home bleaching agent with an additional effective time for discoloration was seen based on a literature review

Effectiveness of Adding Home Bleaching Time With 10% Carbamide Peroxide : Literature Review

Changes in the color of teeth to become darker are a lot of complaints by the public. Bleaching is a whitening treatment for teeth that have changed color. Home bleaching is a bleaching that can be done at home under the supervision of a dentist using 10% carbamide peroxide for a period of more than 2 weeks. The purpose of this study was to determine the effectiveness of 10% carbamide peroxide as a home bleaching agent with an extended period of time against tooth discoloration. This type of research is Literature Review using Google Scholar, Web of Science, and Pubmed using keywords that have been carried out, obtaining 9 articles that match the research criteria. The results showed that 10% carbamide peroxide with an application of more than 2 weeks gave effective and stable results, but the effect was also greater. The use of 10% carbamide peroxide as a home bleaching agent with an additional effective time for discoloration was seen based on a literature review

Painting Classification in Art Teaching under Machine Learning from the Perspective of Emotional Semantic Analysis.

This paper aims to explore the Painting Classification in art teaching under Machine Learning. Based on Emotional Semantics and Machine Learning, the Emotional Semantics of the traditional image are expounded. Firstly, Emotional Semantics are applied to figure painting in art teaching. Then, the convolutional sparse automatic encoder model is introduced in Painting Classification. Finally, the accuracies of the Painting Classification of the Support Vector Machine classifier (SVMC) and that of the Naive Bayes classifier are compared, and the relevant conclusions are drawn. The accuracy of Painting Classification is positively correlated with the scale of painting. After analysis, the painting set is classified in a ratio of 2 : 1, with 2/3 as training set and 1/3 as test set, which is conducive to the good accuracy of classification. In Machine Learning, proper whitening can improve the accuracy of Painting Classification to a certain extent. However, when the whitening treatment coefficient is selected, it cannot be too large, and the average pooling is more accurate than maximum pooling. After the comparison of the new SVMC, the Naive Bayes classifier, and the convolutional sparse automatic encoder, the convolutional sparse automatic encoder has the highest accuracy of Painting Classification. Therefore, the Painting Classification in art teaching under Machine Learning is explored, which is of great help to the classification work of students or teachers in the future.

Present status and future directions - Managing discoloured teeth.

Managing tooth discolouration involves a range of different protocols for clinicians and patients in order to achieve an aesthetic result. There is an increasing public awareness in the appearance of their teeth and management of tooth discolouration may be inter-disciplinary and involve both vital and nonvital teeth. Vital teeth can be easily treated with low concentration hydrogen peroxide products safely and effectively using an external approach and trays. For endodontically treated teeth, the walking bleach technique with hydrogen releasing peroxide products is popular. However, there is an association with external cervical root resorption with higher concentrations of hydrogen peroxide of 30%-35%. There are also regulatory considerations for the use of hydrogen peroxide in certain jurisdictions internationally. Prosthodontic treatments are more invasive and involve loss of tooth structure as well as a life cycle of further treatment in the future. This narrative review is based on searches on PubMed and the Cochrane library. Bleaching endodontically treated teeth can be considered a safe and effective protocol in the management of discoloured teeth. However, the association between bleaching and resorption remains unclear although there is likely to be a relation to prior trauma. It is prudent to avoid thermocatalytic approaches and to use a base/sealer to cover the root filling. An awareness expectations of patients and multidisciplinary treatment considerations is important in achieving the aesthetic result for the patient. It is likely that there will be an increasing demand for aesthetic whitening treatments. Bleaching of teeth has also become increasingly regulated although there are international differences in the use and concentration of bleaching agents.