In offic Teeth Whitening Clinical Seminar
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Transcript of In offic Teeth Whitening Clinical Seminar
In-Office Teeth Whitening
Clinical Seminar
Factors that Affect Bleaching Surface debridement Hydrogen peroxide concentration Temperature PH : optimum ph for hydrogen peroxide is pH = 9.5~10.8 Time Sealed environment Proper light source
Contraindications Poor oral hygiene With braces Just completed gum surgery Decayed teeth T-M joint problems Periodontal disease Allergies to peroxide Age under 18 Pregnant women Lactating women
Oral Examination Take photograph Remove Superficial stain Check for caries Note poor restoration Examine the enamel Examine the gingiva Radiograph
Effect of Light Energy on Tooth Bleaching
Light Source Tooth Thickness Bleaching Agent Time Temperature
LITEXTM 685wPLASMA ARC CURING AND WHITENING SYSTEMSpecial wider wavelength design from 400 to 540 nm.
Everbrite Everbrite TMTM
In-office Tooth Whitening Kit In-office Tooth Whitening Kit For Professional Use OnlyFor Professional Use Only
Hydrogen Peroxide
In acidic pH :H2O2 → H2O + O`
pH = 9.5 ~ 10.8 : H2O2 → H + HO2` Strong free radical
In the presence of catalysts and enzymes : 2H2O2 → 2H2O + O2
In pure aqueous form , H2O2 is weakly acidic
Patent whitening arch designed to whiten whole anterior area
Time
The maximum energy applied to a tooth should
not exceed 25 joules per cycle
1 joule = 1000mW/cm2/sec
Arch: 80mW/cm2/sec X 30 sec < 25 joules
30 sec light on + 10 sec light off, 15 cycles, four times
Time (min)
Temp raise on outer enamel surface( )℃
Temp raise in pulp chamber( )℃
Cycle 1 Cycle 2 Cycle 1 Cycle 21 1.2 1.2 0.2 0.32 1.9 2.0 0.6 0.83 2.4 2.6 1.0 1.24 2.8 3.1 1.4 1.55 3.1 3.5 1.6 1.96 3.3 3.8 1.9 2.27 3.4 4.0 2.1 2.48 3.5 4.2 2.3 2.69 3.6 4.4 2.4 2.8
10 3.7 4.5 2.5 3.0
Temperature
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
1 2 3 4 5 6 7 8 9 10
Cycle 2 outer enamel surface
Cycle 2 inner pulp chamber
Cycle 1 outer enamel surface
Cycle 1 inner pulp chamber
Arch type:10 minutes outer enamel 3.7~4.5oC, inner pulp chamber 2.5~3.0oC
Advice for the doctor Always use the shade guide before and after. Always taking a photo before and after. Don't exaggerate the result of whitening
treatment. Thickness of enamel. Degree of calcification of dentin. Reasonable charge for whitening treatment.
VITA Shade Order
by Lightness(L*)
B1 A1 B2 D2 A2 C1 C2 D4 A3 D3 B3 A3.5 B4 C3 A4 C4
CASE REPORT