In vitro Study of Stress Distribution on Additional Posterior Mandibular Implants

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概要

• 論文の詳細を見る

• Purpose : This in vitro study investigated the influence of implant splinting on stress distribution in two experimental implant-bone models.Materials and Methods : Two experimental implant-bone models simulated the original Brånemark model with four implants between the mental foramina and one additional implant placed on each side posterior to the mental foramen. The stress distribution on each implant in the models was examined by applying a static load to the superstructure. Three types of superstructures were studied to determine the effect of additional implants in the posterior region : 1) a metal superstructure supported by all six implants (Full dental arch ; Metal FDA) ; 2) the same type of superstructure made of resin instead of metal (Resin FDA) ; and 3) the metal superstructure supported by four anterior implants, with the conical abutments removed from the two posterior implants (Short dental arch ; Metal SDA).Results : Regardless of the type of superstructure tested, high stress was observed around each loaded implant. The highest stress was concentrated on the distal implants of the FDA compared to the stress on the anterior implants.Conclusion : The elevated stress concentration around the implants found in the present in vitro study is considered to be one of the reasons for the high failure rate of additional posterior mandibular implants.

• 日本補綴歯科学会の論文

著者

• TOMOTAKE Yoritoki

  Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, The University of Tokushima

• ICHIKAWA Tetsuo

  Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, The University of Tokushima

• HUA Wei

  Department of Materials Science

• NAGAO Daisuke

  Department of Chemical Engineering, Graduate School of Engineering, Tohoku University

• Nagao Daisuke

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

• NAGAO Kan

  Department of Removable Prosthodontics, School of Dentistry, The University of Tokushima

• Ichikawa Tetsuo

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

• Nagao Kan

  Department Of Oral & Maxillofacial Prosthodontics And Oral Implantology The University Of Tokush

• Nagao Kan

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

• OGURI Takafumi

  Department of Oral & Maxillofacial Prosthodontics, The University of Tokushima Institute of Health B

• Oguri Takafumi

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

• Nagao Daisuke

  Department Of Chemical Engineering Graduate School Of Engineering Tohoku University

• Tomotake Y

  Department Of Oral & Maxillofacial Prosthodontics And Oral Implantology University Of Tokushima

• Tomotake Yoritoki

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

• Ichikawa Tetsuo

  Department Of Oral & Maxillofacial Prosthodontics And Oral Implantology University Of Tokushima

• Hua Wei

  Department Of Oral & Maxillofacial Prosthodontics The University Of Tokushima Institute Of Healt

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