Tooth Whitening Tray Design
After professional tooth cleaning had taken place, alginate impressions were taken of the upper and lower arch for bleaching tray fabrication (Figure 6). The impression has to be precise, and alginate gives required accuracy.
Basic models were fabricated with dental plaster. Base construction was unnecessary for this procedure. Reduction of the overall thickness of the model at the dental arches, facilitate tray adaptation when vacuum formed.
The buccal surface of model’s teeth were blocked out to create a reservoir for the bleaching gel before tray fabrication. However, there is no difference in the rate of bleaching with or without reservoirs.
The model has to be precise especially in the tooth-gingiva transition, in order to create an accurate tray and avoid extrusion of the bleaching gel (Figure 10).
The base-free model makes it possible to fabricate a more precise custom tray with the in-surgery vacuum machine. Then 1mm soft thermo-forming sheets were used to fabricate the tray, which is very comfortable for the patient.
There is no need to scallop the tray on each tooth. Only 1 or 2mm above the cervical area of each tooth.
Custom trays were checked for accuracy of fit, tissue adaptation, retention and occlusion and the patient was shown how to insert the custom trays and how to apply 16% Carbamide peroxide whitening gel in one drop per tooth.
Final Whitening Results
After 15 days, the patient was satisfied with the final whitening results.
Before and After Comparison
The digital composition with cross polarised light (Figure 17) and twin flash with diffusing light (Figure 18) are shown below. The left hand side showing before treatment and right hand side after treatment.
This treatment with White Dental Beauty 16% Carbamide Peroxide tooth whitening gel, used for 1 hour per day proved to be both effective and predictable. Teeth were visibly whitened in less than two weeks. Showing that White Dental Beauty can bleach teeth even in those cases in which the “wow effect” is difficult to achieve, when the starting point is “rather white” or “not very yellow”, which is the case especially with younger patients.
White Dental Beauty Gels are specifically formulated, packaged and delivered with your patients in mind, ensuring you have everything you need to offer them a successful whitening treatment.
White Dental Beauty's whitening products are available worldwide from your local distributor including Optident for the UK. To order in the UK visit the White Dental Beauty manufacturer page or call +44 (0) 1943 60 50 50.