Headphones that go over your ears can also damage your hearing if you use them too long or play music too loudly. They're just not as much of a risk as earbuds are: Having the source of the sound in your ear canal can increase a sound's volume by 6 to 9 decibels â enough to cause some serious problems.
Dental hand instruments. Instruments used for examining the mouth and teeth. Mouth mirrors are used to examine the condition of the teeth and mouth, as well as to retract the tongue and cheeks upon examination. Probesâ There are many probes available but the main types are the straight probe, Briault probe and periodontal probe.
Usually, root planning is needed when there is a gingival pocket more than 4 -5 mm, and there are tenacious calculus and necrotic cementum (refer to the picture to understand what is cementum) stuck to the roots of the teeth. To carry out the scaling procedure, scalers are needed. There are two types of scalers. There first type is a hand scaler, and the second type is an ultrasonic scaler. If the dentist chooses to use the hand scaler, you will not feel anything much as the hand scaler is a finely crafted instrument.