Two treatments of dental fluorosis

One. Grinding, etching coating method

The two treatments of dental fluorosis are no substantive defects of dental fluorosis. Specific steps are as follows:

1. Scaling of teeth.

2. Select the fine tapered diamond burs, from near to far, from far to near, along the cut edge to the neck. The drip edge of the edge grinding, kept moist conditions uniform worn dyed layer of 0.1 ~ 0.2mm. Note that the tooth shape when worn out not deepens in coloring plaque area and leave a dent. Mill complete, rinse with water.

3. The teeth were separated from wet to dry the tooth surface, rubbed with 35% phosphoric acid for 3 minutes, water rinse, air guns dry the tooth surface.

4. Coated with adhesive, blow to the thin layer 40 seconds of irradiation with visible light curing. ⑤ ethanol wipe the anaerobic layer of the tooth surface smooth and shiny.

Two. The composite resin

Applicable to the real defect of dental fluorosis. Specific steps are as follows:

1. Rub off the enamel of the labial coloring or loose thickness of 0.3 ~ 0.5mm.

2. Etching the teeth: across the wet conditions, a special small brush dipped in 35% to 55% phosphoric acid uniformly rubbed the tooth surface for 1 minute. Etching time should not be too long, otherwise the formation of a layer of insoluble reactants, moreover, a long time etching, can severely damage the normal structure of the enamel and increase retention. Should be noted: the acid treatment agent can pass into the gingival sulcus, use distilled water or water in the etching after repeated washing, wash acid and calcium debris, patients not to gargle in this process. Finally, we utilized the particles of oil-free compressed air drying the tooth surface, tooth surface at this time was the chalk color or gray.

3. Coated adhesive: with a small brush dipped in the adhesive applied to the etching of the tooth surface with an air gun, light winds, so that uniform, and should not be thick, otherwise, the volume shrinkage, thermal expansion coefficient, low mechanical properties, could easily lead adhesive failure. Visible light irradiation for 20 seconds, allows adhesive preliminary curing.

4. Repair: the selected materials, according to patient age, complexion, and the adjacent teeth color in natural light than the color, take appropriate composite resin, forming fingers, stainless steel sculpture knife, push in the required parts can not exceed the cutting edge. The neck end stop at the gingival margin, not depth of gingival sulcus and the composite resin cover on the gums, push is not fizzy. To be shaping satisfaction, according to the thickness of the material and color categories, from 40 to 60 seconds so that the curing with visible light irradiation. Distance of the light guide rod tip and the material the closer the better, generally no more than 1mm. Each tooth form sculpture forming a holistic concept. Such as the crown is too short, sculpture should make the teeth near and dental supplies far less book, the central part of the relatively sudden, and thus appears to teeth longer, increase the appearance.

5. Finishing polishing: to pay attention to the lip surface morphology and occlusion. Eliminate the premature contact, remove the excess material of the gingival margin. The resin surface due to the anaerobic layer of adhesive anaerobic layer, the surface must be ground and polished. For the middle of articulating paper, protrusion, lateral occlusal check early point of contact. For gravel teeth with a diamond drilling and grinding, and can be appropriate to reduce tooth contact, reduce the bite force. The operating principle: from course to fine in a drop of water under the mill speed is about 1000r/min, and finally grinding cup with rubber or cloth wheel dipped in fine abrasive polishing. Diamond drill and Ma-ray film thickness divided, generally finishing polishing the order is: tinkering → repair → Finishing → fine polishing → fine polishing. Polishing after resin refractive surface is very smooth and not easy to deposition of plaque, like exquisite handicrafts.