Showing posts with label Medical Technology. Show all posts
Showing posts with label Medical Technology. Show all posts

Sunday, August 21, 2022

Dry Socket: More Painful Than The Tooth Extraction


Dry Socket: More Painful Than The Tooth Extraction

Having a tooth pulled may be one of the most anxiety-inducing dental visits you will ever experience. But having the tooth pulled comes with an anesthetic of some sort, so you may feel nothing more than the prick of a needle (not pleasant, but tolerable). The true pain from having a tooth pulled comes from developing a dry socket (alveolar osteitis). The pain of alveolar osteitis can be unbearable, but it is almost always avoidable.

What Is Dry Socket?

The socket is the hole in the mouth left from the extraction of the tooth. It is typically protected by a clot that prevents the nerve from exposure to air and elements. According to the Mayo Clinic, dry socket occurs when the clot is dislodged before the extraction site has had a chance to heal. Once the clot is gone, the nerve is exposed to everything from the air you breathe to the food you eat, which can be extremely painful.

How Do I Treat It?

Over-the-counter medications like aspirin or ibuprofen can help relieve the pain, but it can become so severe that you may need a prescription pain medicine from your dentist or oral surgeon. If you believe you have lost the clot from your extraction site, contact your dentist right away. The dentist may need to clean the socket and pack it with gauze to protect it. To prevent the risk of infection, you may need to take an antibiotic. At home, you may be asked to rinse regularly with salt water to encourage the socket to heal.

How Do I Avoid It?

The American Dental Association recommends avoiding drinking from a straw or smoking after having a tooth extracted. If you take birth control pills, the estrogen in the pills can prevent effective clotting, so talk to your dentist or oral surgeon about the best time of the month to perform the surgery. Be sure to disclose all medications to your dentist, even those taken over the counter, to make sure nothing you take will add to your risk of dry socket. Follow all of your dentist's recommended follow-up care after your tooth extraction and be sure to go to your post-extraction follow-up appointment to avoid any complications.

Thursday, July 11, 2013

How Does A Dentist Drill Work- The Mechanism Of Action


If I have to name one thing that have revolutionized modern day dentistry then I'll say Dentist drill.

Yes the dental handpiece / drill have brought the revolution in modern dentistry and it have become an integral part of a dental practice.

How Does A Dentist Drill Work

Today dentists are dependent on the handpiece / drill, if drill is running smoothly then practice is running smoothly.

Handpiece or drill is a sophisticated device which runs on electric motor or air pressure, The drill which you see commonly in the dental clinic is a air driven handpiece. It runs with the help of compressed air which helps in rotating the turbine which ultimately rotates the bur.

The first air driven handpiece was made by Dr John Borden of USA 1950 and pioneering work was done by Sir Jhon Walsh in NewZealand.

Dentist drill (Air driven) consist of two main part

  1. The Body or shell through which air and water are
  2.  supplied The Turbine which revolves the bur 

Dental Handpiece

Body or shell can be made up of brass, stainless steel, or titanium, brass is cheaper but less strong and more corrosive, steel is strong but costly, titanium is least corrosive most strong but most costly.

The body can be further divided into head and outer sheath, head holds the turbine and outer seath forms the handle and hold the inlets of air and water supply.

Interior Cross Section of Drill

Rusting of the inner surface of head can be seen in handpieces due to repeated sterilization.

Turbine is the heart of the drill, it's a kind of precision component which convert the air pressure in mechanical energy of rotation. Turbine rotates around a axis on which a bur or drill bit is fixed, as the turbine rotates bur will rotate. turbine have small fin like structures attached around it's axis to catch the air resistance and convert it into rotatory motion.

You may be thinking How fast does dentist drill rotates?

Turbine of the dental drill rotate at the free speed of 3,80,000  to 4,50,000 revolutions  per minute ie rpm. This speed is measure in two categories one is free speed (when bur is not in the contact of tooth surface) and other is active speed (when bur is in contact with tooth surface). Active speed is around 1,80,000 to 2,00,000 rpm.

You may think what is the need of such a high speed, answer is- Dentist have to drill or cut one of the hardest structure of the human body which is enamel.

Coming back to the Mechanism of action - How does dentist drill work


  • Dentist presses a foot pad which is nothing but a kind of switch to on and off the drill.
  • On pressing the foot pad compressed air is released and enters the drill through air inlet pipe which is attached to the drill at back end ie. coupling.
  • Compressed air reaches the head part of the handpiece in a small chamber which houses the air turbine.
  • In attempt to escape this compressed air rotates the turbine.
  • Through various minute attachments there is facility to attach a bur to this turbine.
  • When turbine rotates bur also rotates.
  • This bur is used for drilling and cutting tooth structure.