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                    D e n t a l    F o l l i c l e               

             The        Monthly     E- Journal Of  Dentistry                  Vol -  V    Number-  I I  Julyt    2010

In this Issue:

  • Editorial

  • News

  • DentistryUnited  Ranks  2   on GOOGLE

  • Laughter - The best Medicine

  • Video Of The Month - CT Applications in Dentistry

  • Usage of nanocrystalline Hydroxylapatite in paste form to preserve post–extractive sites. A one–case report.  - Dr.Marco Iorio

  • Cure for the tooth ache - Royal Gazatte & NewFoundland Adverise - Feb 14 1811                                     

 

Editorial :     

The Series of the Best Papers Published in Dental Follicle Continues with this issue too. In this Issue We Have selceted  Dr. Marco Iorio's Paper published Originally in June 2007 edition of Dental Follicle. After Publishing so many cases and having had innumerable discussions with Dr.Marco, I can surely say. Planet Earth is Blessed to have an "Implantologist" called "Marco" from Italy.

The case report has not been added, rather linked to the original paper at the end of the discussion.

I hope you enjoy this issue.

mailto: dentistryunited at gmail dot com

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Yours truly

Dr. Syed  Nabeel

Editor of Dental Follicle & WebMaster www.DentistryUnited.com

News :

         

International Dental Conference on Global Perspectives in Dubai

Aesthetic Edge Now Offers CO2 Laser Treatment

Jeddah meet spotlights gum treatments

 

DentistryUnited @  Ranks 8 on GOOGLE

Laughter - The Best Medicine :

Patient: Doctor, what does the X-ray of my head show?

Doctor: Absolutely nothing!


 

 

                                         

 

 

Usage of nanocrystalline Hydroxylapatite in paste form to preserve post–extractive sites. A one–case report.

Marco Iorio

DMD, DDS, private practice in Castelletto Ticino (NO) Italy

Via G.Barberis 1

28053 Castelletto Ticino (NO)

Italy

Tel. +39–0331–973311+39–0331–973311

Fax +39–0331–971729

iorio.marco@libero.

 

 ABSTRACT
This article proposes a technique to preserve post–extractive sites in order to simplify prosthetically-guided insertion of  osseointegrated dental implants. 
 

KEY WORDS
Nanocrystalline hydroxylapatite, dental implants, extraction sockets, bone regeneration.
 

INTRODUCTION
The healing process following tooth extraction often leads to a partial filling of the empty socket1,2, together with  3–4mm ridge resorption both in transversal and vertical direction1,3. The result of these processes is a narrow and reduced ridge, with inadequate bone volume to support soft tissue or to permit implant placement in an ideal position.
Applying GBR principles to post–extractive sockets significantly reduces the amount of bone resorption3.
To make GBR effective, it is mandatory to obtain and maintain soft tissue coverage over the augmented site4,5 by elevating and advancing a wide mucoperiosteal flap. This inevitably leads to a modification of normal mucoginigival anatomy of the augmented site, with a subsequent esthetic alteration. Full thickness flap elevation interrupts periosteal vascularization of buccal bony plate, thus inducing a partial resorption.
Recently a technique to preserve post–extractive site was propose (Bio–Col technique, Sclar 20036). The tooth has to be extracted without causing trauma to the neighboring tissue, the empty socket has to be filled with bovine bone mineral — a slow–resorbing osteconductive material — and the site has to be sealed with resorbable collagen sponge and cyanoacrylate.
This combination, according to the Author, leads to a good re generation of alveolar bone, without the problems caused by the need to obtain primary wound closure.
One big problem with this technique is the long resorbtion time of bovine Hydroxylapatite.
Nanocrystalline hydroxylapatite in paste form (Ostim®, Heraeus–Kulzer GmbH, Hanau, Germania) is a pure, unsintered hydroxylapatite material, made of crystals of hydroxylapatite (average dimension 18 μm) in 35% water suspension. The nanocrystalline structure of the biomaterial allows a quick vascularization of the graft, with a wide contact surface between the graft and the osteoblasts (106 m2/g, vs 50–90 m2/g of bovine bone mineral). This characteristic makes hydroxylapatite in paste form a very quick resorbing biomaterial. A recent animal study reports a 53,9% average percentage of mineralization of a defect filled with Ostim® at 12 weeks; this data is not statistically different from the percentage of mineralization of a similar defect filled with autogenous bone7.
Another characteristic of nanocrystalline hydroxylapatite in paste form is its complete radiolucency, which allows for a radiographical evaluation of bone regeneration process. 

 

To see Case Report Click Here

 

VIDEO OF THE MONTH - CBCT  Scan For Orthodontics

 

 

 

 

 

 

Even Kissing Is Unhealthy .

 

Montreal Gazette - Dec 8, 1976

The Above is from the archieves of dentistry. Do read above what were the myths of "Kissing" in the Rock'n'Roll Era !