teeth whitening


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teeth whitening

  1. 1. UNIVERSITY AUTONOMUS OF CIUDAD JUAREZ Institute of Biomedical Sciences School of Dentistry “Dental Materials”FIG.1 117702 Briseyda Ayala DR. Alfredo Névarez Rascón DATE: 10- FEBRUARY-12
  2. 2. It is the process used to treat teeth for aesthetic purposes,eliminating the effect of staining or discoloration of extrinsic or intrinsic origin. PIC.2 Before-After
  3. 3. "Reddish are their eyes more than wine and the whiteness of your teeth more than milk" The canons of beauty.  2000 BC Egyptians possessed cosmetic "teeth healthy and white symbolized signs of health, cleanliness and strength." Cavemen wanted to have large canine strength and health. Ancient imperial China, widows dyed their teeth black as a sign of surrender to the beauty.PIC.3 Mayas   Maya, were made inlaid teeth and smooth his edges like a good social standing
  4. 4. • Over 92% of adults agree that an attractive smile is an important social asset• 88% always remember someone with an especially attractive smile• 85% agree that an unattractive smile is not attractive to the opposite sex.• 74% agree that an unattractive smile can lessen the chances of professional success• Only 50% are satisfied with your smile
  5. 5. Teeth can have an infinite variety of color range because of differentreasons, mainly the color is genetically (skin color).The color is given by the set of structures that form the teeth as are thethickness and quality enamel, dentin color and quantity.INTRINSIC • EXTRINSIC
  6. 6. • ARE: stains within the tooth.- Occur from the inside out, in the period in which the tooth is completing his training (ripening) or by some internal event such as bleeding pulp and produces a color change • Tetracycline stains - stains teeth, a period which results in the formation of tooth structure during the first 3 years of life.PIC.5 Colouring by tetracyclines during the PIC.6period of tooth formation
  7. 7. PIC. 7 Stains by fluoroscopy PIC.8 Spots by excessive fluoride intake of fluoride, there are three types of fluorosis Mild dental fluorosis: There are streaks or lines across the tooth surface Moderate dental fluorosis: the teeth are highly resistant to decay but have opaque white spots Severe dental fluorosis: enamel is brittle and has brown spots • Posteruptivas those that appear after the eruption of teeth by: • Shock or chipped teeth • Aging of the tooth • From the age of 50 teeth become more yellow or opaque, have a darker gray
  8. 8. • ARE: Stains come out of the tooth- ingestion of food, beverages, or contact with other pigmenting agents.its initial fixation is performed through hydrogen bonds to proteins of dental plaque deposited and fixed to the tooth by calcium bridges PIC. 9 Tea PIC. 10 Coffee PIC. 11 Wine PIC. 12 Snuff-Nicotine
  9. 9. • Internal bleaching: (in non-vital teeth only) and in the case of a tooth endodontic (root canal treatments with sodium perborate) and may be supplemented by external whitening techniques.• External bleaching (vital teeth), involves the application of substances on the outside of the tooth. • Carbamide peroxide-In general outpatient • Hydrogen peroxide: Basically for Clinical treatments STEPS Cleaning, protection of the gum, gel application in ferrule and placement as this, application of special light, removal of the gel.
  10. 10. PIC.13 Before whitening PIC.14 After whiteningPIC.15 Before of whitening PIC.16 After whitening
  11. 11. Clinic • Hydrogen peroxide 35% • carbamide peroxide 35% Outpatient: Carbamide peroxide 10-30%Descomposes into:•3% hydrogen peroxide (active element)•7% urea (raises the pH of the solution)
  12. 12. Whitening Clinic Whitening Outpatient Whitening Mixed 
  13. 13. In home:•Molds take the patients mouth and is made in a ferrule (flexible plasticstructure) which conform to the shape of the teeth. One for the upper teeth andone for the lower teeth.•They are transparent, do not bother•It gives the patient the two braces and whitening kit containing syringes withthe bleaching product.•Every night for 20-30 days, after brushing a small amount is deposited in thesplint, at the height of each teeth whitening, and put in mouth for 3 hours.•After braces are removed from the mouth and cleaned with cold water toremove residual product and inactive. PIC. 17 whitening Gel[peroxide PIC.18 splint hydrogen or carbamide]
  14. 14. •1 hour. (with full arch lamps that activate the product in all teeth whiteningat the same time) with three or four short breaks to renew the bleachingproduct we put on the teeth.•There are products that are activated by a halogen plasma arcsimultaneously activating all the teeth to be treated.•OOther products are activated by mixing the "base" and "catalyst". In thesecases not necessary to input light of any type.•If for activation of the bleaching gel using conventional methods usinghand lamps that illuminate tooth to tooth 5 minutes per tooth.•The procedure is time consuming
  15. 15. Been much more stable over time and presents theadvantage of being successive annual reminders (afterwhitening booster).Chemical activation technique or photoactivatedtechnique, either with hydrogen peroxide or carbamidehigh concentration.After the patient already has braces and whitening gelneeds only to provide (individualized thermoplastic trays)and whitening agent: hydrogen peroxide and / orcarbamide.Three to four weeks or 3 to 7 days
  16. 16. About 15 tone, scale is easilydefined according to thequality thatdistinguish between familiesof color (which is the same asthe wavelength of the PIC. 19 arranged according to hue and chromaLight reflected from theteeth). Chromatic color is pigmented4 tones: 4 levels of chroma for each hue (1, 2, 3.4)A (brown – reddish), A1, A2, A3, A4, where A1 is less saturated thanB (orange – yellowish), A4.C (gray – greenish), yD (gray –rose)PIC. 20 Vita sorted by value [LIGHT-DARK AND CLEAR]
  17. 17. ADVANTAGES DISAVANTAGESComfort and personal Not recommended forsatisfaction childrenReduces plaque Peroxides allergydentobacterialReducing the yellow color of Sensitive teeth, decayedthe teeth between 5 and 14 areasshadesThe clinical whitening lasts dental traumaonly 1 hourprocedure is not painful or Duration timeinvasive
  18. 18. Colgate Platnum® Carbamide peroxide 10%. manufacturerContrast PM® Carbamide peroxide 15 or 16%Day White®   5.5% and 7.5% hydrogen peroxide. One or twosessions of 30 minutes a day with prefabricated splint.Illumine®  gel that is activated through two separate syringes,containing 30% hydrogen peroxide for use only in consultationwith prefabricated splint, with sessions of 30-60 minutes.Opalescence® QuickBleaching agent: carbamide peroxide. Concentration: 35%.Technical whitening: in-office bleaching with splints. PIC. 21 Presentation