Tray whitening: what the evidence shows. | Semantic Scholar (2024)

The purpose of this paper is to discuss the safety, efficacy, indications and techniques for under-18 bleaching.

The precautions that must be taken prior to prescribing different bleaching therapies with the goal of improving the patient’s smile, without damaging oral tissues are detailed.

The resultant lighter teeth have changed prosthodontics in that there is less need for some types of restoration, less aggressive preparation design, as well as new techniques for shade selection, caries control and managing gingival health.

Dentist must have enough knowledge about in-office bleaching prescribed for home-use bleaching including their contra indication and side effects, to advise the patients and provide effective bleaching services.

This article reports on 44 subjects who bleached their tetracycline-stained teeth for 6 months using trays with reservoirs overnight in a half-mouth designed study and 2 of 3 different concentrations of carbamide peroxide.

The aetiologies of a single discoloured tooth are discussed and, through evaluation of the literature and discussion of clinical cases, the theory, safety and bleaching techniques available are explored.

This article focuses on potassium nitrate applied either by brushing before initiating whitening or by application via a tray during whitening to reduce sensitivity.

Tooth whitening became one of the most wanted and performed cosmetic dentistry procedures, although is treatment is safe and scientifically proven, some precautions must be taken, such as looking for a qualified professional.

Dentist must have enough knowledge about in-office bleaching prescribed for home-use bleaching including their contra indication and side effects, to advise the patients and provide effective bleaching services.

All eight products with hydrogen peroxide concentrations ranging from 15% to 35% were effective in bleaching teeth and there were 51% and 65% reductions in deltaE, respectively.

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No significant differences in tooth and gingival sensitivity were found between the tray side with reservoirs and those without reservoirs, and Shade guide and slide photography data showed no significant differences between teeth lightened with agent with reservoirs compared to teeth lightening with the same agent without reservoirs.

Both CP and HP are effective at-home bleaching agents when daytime bleaching is preferred and there was no statistically significant difference between products with regard to gingival or tooth sensitivity.

Bleaching with 10%, 15%, and 20% carbamide peroxide is effective for removing tooth staining caused by tetracycline and the 10% concentration has the most advantages and the fewest disadvantages.

Lower concentrations of carbamide peroxide take longer to whitening teeth but eventually achieve the same result as higher concentrations, although higher concentrations may cause increased sensitivity.

All 3 methods of evaluation revealed a significant difference in the tooth lightness achieved by 10% and 15% products at 2 weeks but no significant difference at 6 weeks, and no statistically significant difference was found in gingival or tooth sensitivity.

The product tested is an effective and safe tooth-whitening agent and had a measurable, statistically significant color change from baseline to 6 months of delta E* = 5.0.

The at-home treatment produced significantly lighter teeth than the in-office treatment during all active-treatment periods and follow-up visits according to all three-color evaluation methods, and color relapse for both treatments stabilized by six weeks.

The breakdown or lowering of active bleaching agent concentration during use in the mouth is addressed and the relationship of gel degradation to the whitening capability of a gel is yet to be determined.

The study showed that the total carbamide peroxide percent recovered was significantly higher for Opalescence products compared to Nite White and Rembrandt bleaching gels, and that whitening gel in trays with reservoirs and trays without reservoirs degraded at the same rate.

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