Mastication

Posted on August 18th, 2008 in Definitions

Mastication: The grinding or chewing of the solid food particles between the maxillary and mandibular teeth which is then converted into digestible size and softening of food.
The solid food which we take in is transformed to digestible size particles by chewing and also with the help of saliva which contains many enzymes which digest the Carbohydrates and basic molecular particles of the food and form bolus which is the product of the primary digestion by the saliva.
Masticatory forces(Bite forces) : These are the force exerted between the maxillary and mandibular teeth when teeth of both the jaws are in contact and are closed for chewing. This is measured in Newtons.
For mastication normal biting force between 100-150 N is observed for different kinds of food.

grow your own teeths no prosthesis

Grow your own teeth even after 50 years

So this technology will bring a drastic change in the use of dentures where own teeth will be preferred much more than the artificial teeth.

According to some scientists the use of dentures in patients is going be a thing of the past, replacing the artificial prosthesis are a group of cells which will be placed in the empty sockets where the teeth are missing and we can see growth of our own teeth within a span of few months even at the age of 50yrs.
Paul Sharpe, a specialist in the field of regenerative dentistry at the Dental Institute of King’s College, London, says the new procedure has distinct advantages over false teeth that require a metal post to be driven into the jaw before being capped with a porcelain or plastic tooth.
“The surgery today can be extensive and you need to have good solid bone in the jaw and that is a major problem for some people,” Professor Sharpe said.
The method could be used on far more patients because the ball of cells that grows into a tooth also produces bone that anchors to the jaw.
The choice of growing a new tooth is likely to appeal to patients. “Anyone who haslost teeth will tell you that, given the chance, they would rather have their own teeth than false ones,” said Prof Paul.

Procedure:

Doctors take stem cells from the patient. These are unique in their ability to form any of the tissues that make up the body. By carefully nurturing the stem cells in a laboratory, scientists can nudge the cells down a path that will make them grow into a tooth. After a couple of weeks, the ball of cells, known as a bud, is ready to be implanted. Tests reveal what type of tooth – for example, a molar or an incisor – the bud will form.
Using a local anesthetic, the tooth bud is inserted through a small incision into the gum. Within months, the cells will have matured into a fully-formed tooth, fused to the jawbone. As the tooth grows, it releases chemicals that encourage nerves andblood vessels to link up with it.
The most intresting part of this procedure is how the teeth are going be to distinguished from each other, they are saying that the molar and the incissor can be differentiated, How are the differentiated ???? is the big question.

Results:

These tests have been done on mice which have shown positive results, as the teeth have grown in weeks.
On this Prof. Paul says “There’s no reason why it shouldn’t work in humans, the principles are the same”

Peptide helps to grow back the Decayed tooth structure

Posted on August 29th, 2011 in Dental News

Yes a new discovery has taken the Dental field by storm, there has been a new discovery by a group of Scientists in University of Leeds.
They have successfully used a Fluidto regrow the portion of the tooth which was decayed due to the effect of caries.

Say no to Drilling

Tooth decay begins when acid produced by bacteria in plaque dissolves the mineral in the teeth, causing microscopic holes or ‘pores’ to form. As the decay processprogresses these micro-pores increase in size and number. Eventually the damaged tooth may have to be drilled and filled to prevent toothache, or even removed.
What is this Fluid:

• This fluid contains a peptide known as P 11-4.
• And it is a Peptide which is said to help in the re calcification of the Tooth structure.

How does this “Magic Fluid or Peptide P 11-4″ Work:

1. Developed in the University of Leeds’ School of Chemistry, led by Dr Amalia Aggeli.
2. It contains a peptide known as P 11-4
3. This Peptide is said to assemble together into fibres in some conditions.
4. When applied to the tooth, the fluid seeps into the micro-pores caused by acid attack and then spontaneously forms a gel.
5. This gel then provides a ‘scaffold’ or framework that attracts calcium and regenerates the tooth’s mineral from within, providing a natural and pain-free repair.

What are its Advantages ??
The main reason patients fear a dentist is

• Dental Drilling
• Local Anesthesia injections in the mouth.

With the help of this technique both the major fears of the patient can be averted and the patient will willingly be redy to undergo this procedure which will cure him the Painless way.
Will it be Successful ??
According to Professor Paul Brunton, who is overseeing the patient testing at theUniversity of Leeds Dental Institute:
They have conducted tests on a small group of patients who were having initial caries and the Doctors have noticed that this Peptide has not only stopped the Carious process but Reversed the situation.
He was also Stating: “If these results can be repeated on a larger patient group, then I have no doubt whatsoever that in two to three years time this technique will be available for dentists to use in their daily practice.”
But the main problem can be that if this really works out then what will be the fate of all the restorative material manufacturers,

• will they let is come out and boom the market ? or
• will they stop it from making a debut in the Clinics ??

DCI announces Semister Wise Examinations with Internship

DCI announces Semister Wise Examinations with Internship

Posted on August 26th, 2011 in B.D.S, Dental News DCI has announced the re implementation of Internship for the 2008-09 batch from this year. And now DCI has announced that the examinations are going to be Semester Wise with 2 semester’s in the 4th year. The Scheme Of Examination starting this year: 1st Year: Examination at the end of the year 2nd Year: Examination at the end of the year 3rd Year: Examination at the end of the year 4th Year: The Subjects are divided Semester Wise and the Schedule is as given Below:

 1st Semester or Part 1: Public Health Dentistry Periodontology Orthodontics and Dentofacial Orthopetic ORal Medicine and Radiology 

2nd Semester or Part 2: Oral and Maxillofacial Surgery Conservative and Endodontics Prosthodontics Pediatric and Preventive Dentistry 

So it is good news for the students from the 2008-09 batch who will be having Semester wise examinations and wont be having 8 subjects in one year to worry about. You can read the Full article at http://www.dciindia.org/annoncment_pdf_files/pdf_files/B-2211%20Implementation%20of%20DCI%20revised%20B.D.S.%20Course.pdf