Abstract
Purpose : Complications in mandibular implant treatment are rarely serious due to its specific histological and anatomical properties. On the other hand, complications are expected to decrease with the progress of diagnostic apparatus. However, few investigations on complications after recent changes in implant treatment techniques and environmental facilities have been reported. In this study, we performed a questionnaire survey to study the present situation of complications considering the changes in recent implant treatments. Materials and Methods : A questionnaire survey of complications in mandibular implant treatment and dental clinic systems was conducted, targeted 51 certifying and supervisory doctors of the Japanese Society of Oral Implantology in Hokkaido for three years (April 1, 2012 to the end of March, 2015). Results : The complica tion rate of inferior alveolar nerve injury was 22% in supervisory doctors and 21% in certifying doctors. The rate of lingual perforation was 22% in supervisory doctors and 10% in certifying doctors. Discussion and Conclusions : The results revealed that there are still a considerable number of complications despite the changes in implant treatment techniques and environ mental facilities. It is considered that in-office cooperation with co-dental staff and other medical institutions is crucial to pre vent complications.
