Effect of Bleaching with 15% Carbamide Peroxide on Flexural Strength of Three Resin-Based Restorative Materials

Kimyai, Soodabeh; Lahij, Yasaman Ghavami; Daneshpooy, Mehdi; Navimipour, Elmira Jafari; Oskoee, Parnian Alizadeh

doi:10.18502/fid.v17i27.4651

Cited by 7 publications

(8 citation statements)

References 20 publications

(56 reference statements)

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“…While many studies have attempted to observe changes in esthetic materials by whitening agents used in home bleaching or in-office bleaching 4,7,[17][18][19] , there are few studies on the color changes of aesthetic materials in whitening toothpaste 20,21) . Since whitening toothpaste is generally used with brushing, it is difficult to distinguish between the effect of the toothpaste and the effect of removing the color with physical force.…”

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Color Change of Esthetic Restorative Materials for Different Staining and Whitening Dentifrices

et al. 2021

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Background: As the importance of the esthetic function of teeth increases, the use of esthetic restoration materials and whitening treatment are increasing. The purpose of this study was to investigate the color change of esthetic restoration materials upon using staining and whitening toothpaste. Methods: Light curing (LC) packable composite resin, LC flowable resin, LC glass ionomer (GI), and self-curing GI specimens were colored in coffee or curry for three hours a day for seven days. After that, regular toothpaste, whitening toothpaste containing hydrogen peroxide, and whitening toothpaste containing activated charcoal were applied for three minutes three times a day for two weeks. Luminosity (L), chromaticity a (a), and chromaticity b (b) were measured using a spectrophotometer once a week. Results: In the coffee-colored group, the change in L 2 *a 2 *b 2 (E 2 ) with time was significant (p=0.004), there was no difference for different toothpaste types (p=0.646), and there was significant difference (p＜0.001) for different esthetic restorative materials. The change of E 2 in the curry-colored group was significant only for different esthetic restorative materials (p＜0.001). In the coffee-colored group, the L, a, and b values of the light-curing GI showed greater change than other materials after staining and one week after whitening, turning dark, red, and yellow. In the curry-colored group, L did not differ for different materials and times, and a and b showed the greatest difference in light-curing GI after staining and one and two weeks after whitening. Conclusion: The use of whitening toothpaste for two weeks was not different from the use of general toothpaste in the removal of staining or whitening. Since light-curing GI is the most vulnerable to coloration, it is recommended that coloring by food chromogen should be explained in advance, before using light-curing GI for teeth restoration.

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Color Change of Esthetic Restorative Materials for Different Staining and Whitening Dentifrices

et al. 2021

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“…The impact of bleaching chemicals on teeth and restoration materials has been examined in recent years. One main worry is that composite fillings in teeth may not be as clinically durable as they otherwise would be due to the chemical softening produced by bleaching materials [6,7].…”

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confidence: 99%

Effectiveness and Adverse Effects of Dental Bleaching with 10-16% vs. 30-37% Carbamide Peroxide: A Systematic Review

AlRashoud¹,

Alquraishi²,

Almarzouq³

et al. 2022

Arch Pharm Pract

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Bleaching one's teeth is a less invasive alternative to getting aesthetic related work done. Although bleaching is safe when in contact with teeth and related tissues, some are still worried about its potential side effects. It is stated that the bleaching procedure must be employed according to a particular diagnostic, taking into consideration various aspects such as the following: kind of discoloration, condition of teeth produced by food, quantity of reagents used, age, kind of reactions to chemical compounds used, and time it is applied. A systematic literature review from 2012 to 2022 was performed using databases such as PubMed, Medline and ScienceDirect. The keywords used were "bleaching", "carbamide peroxide", "10% carbamide peroxide", "30% carbamide peroxide". Some studies reported 10-16% carbamide peroxide to be effective, whereas some stated otherwise. Some studies showed that using 35% CP bleaching gels had no effect on the surface roughness of composite resin. The result reveals that 10 and 16% are more effective than the 37% concentration in one week of treatment. Low concentration is enough to produced good results without the risk of any adverse effects. Both ranges of carbamide peroxide concentrations resulted in color change. However, high concentration often led to surface roughness that may support S. mutans deposition. Low concentration is enough to produced good results without the risk of any adverse effects.

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“…Flexural strength is a mechanical characteristic of restorative materials and predicts the materials’ behavior under functional and parafunctional forces to some extent and can be an indicator of restorative materials’ clinical performance. 11 A number of previous studies have investigated the restorative materials’ flexural strengths after preheating, with contradictory results, 2 , 3 , 6 , 12 - 14 which have been attributed to differences in the formulation of the studied materials, the organic resin matrix, inorganic filler content, and the temperature and duration of preheating. 1 , 6 …”

Section: Introductionmentioning

confidence: 99%

Comparison of the effect of preheating on the flexural strength of giomer and nanohybrid composite resin

Kimyai

Mashayekhi

Mohammadi

et al. 2022

J Dent Res Dent Clin Dent Prospects

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Background. Considering the increased use of preheating and novel resin-based materials to restore teeth, the present study investigated the impact of preheating on the flexural strength of a giomer and compared it with a nanohybrid composite resin. Methods. Two restorative materials (Beautifil II giomer and Alpha III nanohybrid composite resin) were used. Thirty rod-shaped samples (adding up to 60 samples) were prepared from the materials above and divided into two subgroups: with and without preheating (n=15). Before sample preparation, the giomer and nanohybrid composite resin tubes were preheated at 68ºC for 15 minutes in the preheating subgroups. In the subgroups without preheating, the tubes were kept in a room at 25ºC. Then the flexural strength was compared between the two groups with two-way ANOVA at a significance level of P<0.05. Results. The results showed significantly higher flexural strength in the preheated subgroups than in the non-preheated subgroups (P<0.001). In addition, the mean flexural strength values were significantly higher in the giomer groups than in the nanohybrid composite resin groups (P<0.001). Conclusion. Preheating increased the studied materials’ flexural strengths significantly. The flexural strength of the giomer restorative material was higher than that of the nanohybrid composite resin, irrespective of preheating.

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Effect of Bleaching with 15% Carbamide Peroxide on Flexural Strength of Three Resin-Based Restorative Materials

Cited by 7 publications

References 20 publications

Color Change of Esthetic Restorative Materials for Different Staining and Whitening Dentifrices

Color Change of Esthetic Restorative Materials for Different Staining and Whitening Dentifrices

Effectiveness and Adverse Effects of Dental Bleaching with 10-16% vs. 30-37% Carbamide Peroxide: A Systematic Review

Comparison of the effect of preheating on the flexural strength of giomer and nanohybrid composite resin

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