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Explain the types of care of teeths
a) Plastic/ Nylon Scalers: These are available in a variety of shapes and are moderately effective in calculus removal. Can be Ultrasonically cleaned and autoclaved in the usual manner while some are available as reusable handle with disposable tips. The reusable types are not amenable to sharpening and are not very durable.
b) Gold-plated Curettes: These were recommended initially. However, gold plating can be easily removed, resulting in an instrument contraindicated for implants. Therefore they should not be placed in an ultrasonic cleaner or sharpened. These have been superseded by titanium instruments.
c) Titanium Instruments: Universal and Gracey curettes made of titanium alloy are available. These are effective and can be autoclaved. These are the instruments of choice, though currently very expensive.
d) Ultrasonic scaler: Its use around an implant is also controversial with varying views about their use with conventional tips. Many manufactures have introduced ultrasonic scaler tips which have a stainless steel core with plastic sheaths. The plastic (PEEK) used for this sheath is highly heat resistant and can be autoclaved.
Types of xerophytes On the basis of their mbrphology, physiology and life cycle pattern, xerophytes are generally classified into the following three categories: a) Ephem
A solution was prepared by dissolving 25g NaOH powder in 100 ml water. Using not more than 15 ml water, devise a series of dilutions that will give a concentration of 5mg/ml NaOH.
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Which are plant tissues that form the plant roots? Roots have a central portion called medulla made of vascular tissue outer phloem and inner xylem. Medulla is delimited by per
why are blood formed at bones or joints
Case scenario Mr Kit Lee, a 28-year-old unrestrained driver of a utility, was travelling on a highway at 100kph and swerved to miss road debris. He lost control and struck a tre
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