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Multidisciplinary Treatment Solutions
for Peri-Implantitis Symposium

Peri-implantitis Associated with Machined or Rough Surfaces: 30 years of experience

Sunday, June 11th, 2017
Presented by: Prof. Massimo Simion


After 15 years of pre-clinical and clinical studies, in the early '80 Prof. P.I. Branemark developed a new implant concept named Osseointegration. According to this concept, CP titanium implants with a relatively smooth turned surface were placed with a two stage approach in a submerged situation and left to heal for 3-6 months before prosthetic loading. From 1980 to the year 2000, millions of patients were treated with extremely high long term success all around the world. After the year 2000, the implant surfaces of several implant systems were modified by means of sand blasting, acid aching of oxidation to increase the roughness and speed up the osseointegration process. After a few years of enthusiastic use of such implants, most of the clinicians started to observe an increased prevalence of progressive peri-implant marginal bone loss associated with pus exudation. A patology that was named: peri-implantitis. Beside the implant surface roughness, different factors may contribute to peri-implantitis onset and development: host response, local factors, smoking and patient compliance. The implant surface characteristics and all the over-mentioned factors will be considered in the lecture.


Prof. Massimo Simion is Chairman of the Department of Periodontology at the Dental School of the University of Milan. Degree of Medicine and Surgery at the University of Milan in 1979. Specialization in Odontostomatology and Dental Prosthodontics at the University of Milan in 1982. From 1987 to 1994 Consultant Professor at the School of Specialization of Odontostomatology of the University of Milan.

Since 1996 Consultant Professor at the University of Parma Scientific Secretary and Founder of the Italian Society of Osseointegration. Member of the Board of the European Association for Osseointegration (EAO) since 1998. President of the EAO for the year 2001-2003. He works half time in his private practice, limited to periodontics and implant surgery, and half time professor at the University of Milan, department of periodontology and implant therapy. He published several papers and he is an international lecturer on the topic of osseointegration and guided bone regeneration.