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Prof. Sandhaus

Professor Sami Sandhaus

Associated Professor of the Stomatology Institute,

Pierre and Marie Curie University, Paris Ⅵ

Member of the French Academy for Dental Surgery

Member of the Center for Restorative Dentistry (USA)

Member of honour of the Academy of Romanian Scientists

Forum Odontologicum

Avenue de Provence 4

Course Ⅰ – Implantology


The place of the zircon implant in the contemporary dental medicine; its role in the restorative dentistry; standards and principles of a rational and safe implantation, based on 50 years of experience and on histological, bio- and immunocompatibility research.

New material:sintered zirconium oxide, biocompatible and highly resistant.

The Sigma implant is the culmination of work begun in the early sixties by the first alumina ceramic screws. A thriving scientific research, both technological (physical and mechanical) and biological and histological brought successive improvements to the initial conceptions and helped shaping an entirely new philosophy of the dental implant, its indication and technique.

The new shapes, surface conditions, sound operative techniques, renewed instrumentation, ennoble this implant and allow it to spare the supporting tissues and its environment.

This course aims to provide general practitioners of dentistry with a specialization in implantology. Indeed, the bioceramic implantology has become a full-fledged discipline of odonto-stomatology. Ever more reliable results, research conducted by both academic institutions and by private research centres, a rich and prolific interdisciplinary consultation, make this old dream possible: replacing the natural dental organ by a heterogeneous system.

Among the materials used, zircon offers unquestionable advantages when compared with the alumina ceramic:

  • Exceptional mechanical resistance, allowing the production of strong implants and of fine pieces such as endo-radicular tenons
  • Biocompatibility: ceramic is an insulating material, we thus notice the absence of corrosion in vivo, and, therefore, unlike other metals, the lack of product release.

The surgical technique is atraumatic and non-invasive. The healing period is shortened due to the use of an ozone-based technique, as well as to the stimulation of osteogenesis around the implant. Ceramic implants play the role of a calcic cathode, which allows the deposit of free calcium on the injured tissue.

After a brief introduction to implantology and to its application in oral rehabilitation, the course approaches the histopathological and biochemical study of bioceramic materials.

The program continues with the study of the physical properties and biocompatibility of zirconium and, more specifically, with the study of the Sigma implant and of the patient's bio-receptivity.

This seminar ends by approaching the osteocoaptation and the oral environment sanitation processes before implantation.


  1. Modern materials: Compared physicochemical properties
  2. Definition of a biocompatibility profile:

In vivo studies: experiments on animals

Clinical studies: impact of ceramics on osseous and connective tissues.

Metal corrosion in vivo: cytotoxicity of corrosion products release; practical implications in implantology.

The endo-osseous Sigma implant

implant-ceramique01.jpg implant-ceramique02.jpg

Factors conditioning the success or failure of an endo-osseous implantation:

  • Parameters connected to the implant and to the receiving host
  • Parameters connected to the operating practitioner
  • Nature of the implant-bone interface
  • Cycles of the peri-implant osseous healing

Indications and contra-indications of endo-osseous implants:

  • Criteria for choosing an implant
  • Osseointegration and calciogenesis. Biocompatibility
  • Local contraindications
  • Preliminary paraclinical tests, how to interpret them
  • Practical work

Statistics for the clinical use of bioceramic implants over 50 years:

  • How to minimise the consequences of an implantary failure>

Alternatives to endo-osseous implants:

implant-ceramique03.jpg implant-ceramique04.jpg

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