Mladen M. Kuftinec, DMD, ScD Professor & Director of Orthodontics New York University College of Dentistry USA AMOM

Importance of application of correct biomechnics in Orthodontics:

Some common principles to be followed with any orthodontic technique If one considers derivations of the term “biomechanics”, one can realize the importance of both of its components. The part of “bio” stands for its biological principles, while the “mechanics” connotes the physical aspect of motion. Both of these parts will be visited first separately, and then combined such as it is in clinical application of biomechanics.

The biology of tooth movement is for the most part rather well understood. It is reasonably well know how the involved structures behave and respond. Yet, we still cannot predict some of the tissues responses. For instance, we still do not understand the phenomenon of root resorption or relapse tendencies adequately.

Optimal forces believed to moved the tooth effectively will be reviewed.

The mechanist of tooth movement will be summarized in terms of meeting the intent or the need of a specific problem. For instance, what makes and how to set up an effective anchorage unit? Also, what are the positive and the negative aspect of the inter-arch elastic mechanics? What makes certain facial patterns easier to handle and more forgiving than the others?

How can the bite opening mechanics be set up and predictably give the positive results, no matter what technique is used?

Similarly, it will be demonstrated what is an undesirable mechanics and how to avoid getting in the negative outcomes of certain seemingly innocent procedures.

Finally, one of the newer program, utilizing animating modeling of tooth movement will be show.

It is useful to recognize that certain recently developing techniques, for instance Invisalign Technology, are based on this and similar digital processing.

Applied biomechanics of interactive Self-Ligating System

Intoduction

Interactive Self-Ligating System [ISLS] has been offered to orthodontic community as a modern, versatile and efficient method of treating variety of malocclusions.

Because of these claims, questions are frequently asked as to the relative advantages and disadvantages of this, over certain other modern orthodontic systems.

This presentation will demonstrate that the theoretical basis for the ISLS works in solving practical clinical problems. The system’s advantages in terms of significant reduction in friction between the bracket slot and the arch wire, improved oral hygiene, better office ergonomics and overall shorter time will be presented and explained in some detail.

A different group of questions pertains to the ISLS´ inherent ability to be employed in treatments with a wide variety of malocclusions. Similarly, it is questioned whether or not the system is equally suitable for the young and the adult patient. A selection of the ISLS treated cases will include an adolescent, an adult, a case of post-traumatic occlusion mutilate by the multiple missing permanent teeth. But the extraction and nonextraction treatment modalities will be explored, whit a particular emphasis on utilizing certain innovative mechanical approaches and technical refinements.

Lastly, issues that have affected the acceptance of the ISLS to this point, namely the increased cost of the appliances and certain technical challenges in manipulating these new devices, will be presented, together with recommendations as to how to minimize them. The ISLS is considered a work in progress, where improved designs and innovations are occurring nearly on a daily basis.

Special note: the first book on the ISLS has just been published, written by John Voudouris and edited by this presenter. The book will be available for purchase during the Congress.

Amom,A.C.
Huatulco, México 26-30 Nov. 2003
Encuentro Internacional de Ortopedia Dentofacial 8va.Reunión Anual Amom
www.amom.com.mx

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