In adapting to the environment, Inuit can consider various active surfaces. With the development of dental handpiece magnetostrictive technology, two sides and back ends are most commonly used. The face and the point are also the surface of the activity; However, they are usually avoided because they release the maximum energy. However, the surface (concave) surface is much less harmful to the root surface. Piezoelectric selection is the most successful when the side ADAPTS to the root.
It is acceptable to use the point or the very end of the stone when removing heavy and/or tenacious stones during the initial treatment. In this case, the deposition is attacked in the cortical layer until the depositing fissures and a thin newt can adapt. In the next stage of the debridement, the Inuit have similar progress to curets on their skin.
Ultrasonic insertion/TIP -TO-ROOT Angle
The Angle of the positive root tip should remain at 0 °, 15 °, more like a periodontal probe will be adapted. Because of the curvature of the root, 0 ° is almost impossible. Is very important at the top of the horns of the root of the 15 °, as the research results show that the overangulation root material loss. 4. With the increase of the root Angle, the removal of the root material will also increase. 4. Further research indicates that the cutting edge of cross-section, load and power can also affect the root defects of iatrogenic. This concept is important because clinicians are trying to find the right endpoint, removing sediment and not removing the root material. This ideal approach is based on focus, mental imagery, experience and appropriate technology, which can help to build technical intelligence (table 1).
Another factor to consider is the visualization of the tipto-root Angle. There are many different positioning strategies, but the root - to - root Angle depends on the relationship between the clinician and the patient. For right-handed operators, sit at 8 o 'clock to 9 o 'clock, and correct the right language and indirect vision in the lower jaw. Sit at the 12 o 'clock position and try to make a clear cut in the back area and not allow proper adaptation.
Ultrasonic insertion/prompt direction
Figure 1A is shown in figure 1C. The direction of ultrasonic insertion/tip can be horizontal (A), vertical (B), or oblique (C).
Newte refers to the direction of the active tip area associated with the long axis of the tooth surface. According to the surface requirements (figure 1A to figure 1C), newt's direction can be horizontal, vertical, or inclined. The horizontal direction is perpendicular to the long axis of the dental equipment surface. The vertical direction, on the other hand, refers to the Inuit area that is parallel to the long axis of the root, resulting in the Inuit targeting the epithelium. The horizontal direction is particularly useful on the proximal surface, which may be the only way to reach the proximal surface, especially on the broad molars. Oblique orientation is another kind of horizontal direction similar to the active prompt. It is helpful in some cases and encourages the use of the outer surface.
Normally, the deposit is located or adjacent to CEJ. In order to adapt effectively to this region, consider its curvature, except for the Inuit Angle of the movement. Nearly 15 ° Angle of CEJ teeth below will promote deposit move because it makes to adapt to the root of the most active areas. Use near 0 ° Angle may prevent delete this area because of the curvature. In addition, locate the right hand operator is crucial, because a eight o 'clock to 9 o 'clock position of the mandible of 10 ° UIT - to - tooth Angle will be effective but 12 o 'clock position may encourage near 0 ° Angle, lead to inadequate debridement.
