Today's modern dental hygienist has an array of modern tools to perform their services for dental patients. In comparison, http://dentalhygienisthq.net describes that the original hygienist had only crude instruments capable of scraping, brushing and hand polishing the teeth.
In the wrong hands these devices could become instruments of torture, hence the fear that many people had when considering the possibility or necessity of seeing a dental professional. Too many cartoons of the day exhibited the image of a dental professional using pliers like tools to haul a bad tooth out of a patient's head.
The dentists of the day in the late 1800's were also not too enthusiastic about dental hygienists, because they were afraid that these specialists would soon take too much business away from them. This probably stemmed from the fact that there was a scarcity of information as well as numbers of patients at the time.
MRI scanning technology or Magnetic Resonance Imagining is a highly respected method of diagnostic imaging, which involves spreading an enormous powerful magnetic field with radio waves, to examine the interior parts of human body.
When comparing this technology versus x-rays, there's no ionizing radiation involved with MRI, which signifies this is actually a very safe and non-invasive method of gazing within the human body and preparing detailed and clear images of internal body structures, bones, muscles, soft tissues and organs.
As discussed at http://xraytechnicianeducation.com, MRI scans are preferred to Computerized Tomography scans together with other diagnostic imagining methods due to its high quality capture of soft tissue imaging. It is typically recommended for imaging of organs like the brain, as well as the spine and musculoskeletal system.