The lateral surfaces of the tip are used. Piezoelectric crystals in the handpiece produce linear motion. Without water, the magneto handpiece would also become very hot. A clinician would never use ultrasonics of any kind without water in a live clinical situation. The figure-eight motion was observed in an abnormal laboratory condition when no water was used for an extended period of time. There is no figure-eight motion of magneto UITs in patient clinical procedures. ![]() Magnetostrictive stacks drive the insert to produce elliptical motion. The higher the frequency, the smaller the active surface area of the UIT. Most units operate between 25,000 and 42,000 cycles per second (25 K to 42 K). Magnetostrictive and piezoelectric are both ultrasonics. The frequency is the number of times the ultrasonic insert/tip (UIT) moves. Ultrasonics has two components: frequency and amplitude. The diagnosis dictates your care plan and instrument selection. In medicine, procedures are never delivered without a diagnosis. 2 Once a diagnosis and plan are made, the clinician can provide preventive services, such as cosmetic prophylaxis, as well as therapeutic services. The revised 2016 American Dental Hygienists’ Standards of Clinical Dental Hygiene Practice documents the process of care: assessment, diagnosis, planning, implementation, evaluation, documentation. 1 The severity of clinical attachment loss (CAL = recession, pocket depth, radiographic bone loss) will dictate the root surface anatomy that is available to instrument and the complexity. The 2018 American Academy of Periodontology/European Federation of Peridontology (AAP/EFP) Classification System created a staging and grading framework for case definition. Are they healthy, actively infected, or in remission? Sounds medical, doesn’t it? Well, it is. We must consider the patient’s clinical condition, the prognosis, and risk for disease. We are not treating the appointment book but rather a complex person. ![]() Instrument selection should be based on a diagnosis, not just the degree of deposits present. This is especially true with ultrasonic instruments since they generate aerosols. Clinicians must use their knowledge, skill, and judgment when considering instrument choices.
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