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.
Surgical instruments can be generally divided into five classes by function. 1  These classes are: 2  Cutting instruments and dissecting: scalpels, scissors, saws. 3  Grasping or holding instruments: smooth [anatomical] and toothed [surgical] forceps, towel clamps, vascular clamps, and organ holders. Haemostatic instruments: Kocherâs and Billrothâs clamps, hemostatic âmosquitoâ forceps, atraumatic hemostatic forceps, Deschampâs needle, HÃ¶pfnerâs hemostatic forceps.