Fractures of hydroxyapatite-coated blade implants connected with natural teeth. A histological study using SEM, light microscopy, and an image processing system

Fumitaka Takeshita, Yasuyuki Matsushita, Yasunori Ayukawa, Tsuneo Suetsugu

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A CLINICAL STUDY WAS CONDUCTED of 59 patients treated with 78 hydroxyapatite (HA)-coated blade implants from August 1986. Five implants in 5 patients were broken at the neck portion, and one implant in one patient was removed from the jaw bone. The histological findings around a broken implant which was removed from the mandible are presented. These sections showed good adaptation of the bone to the implant without a fibrous layer. Histomorphometric evaluation of bone-to-implant contact showed 73.5%. The scanning electron microscopy image of the fractured surface revealed a fatigue fracture. The suspected cause of the fracture was stress concentration at the cervix portion, because of excessive mobility or deleterious change of abutment teeth. Consequently, the osseointegration/biointegration implants should not be connected with natural teeth.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalJournal of Periodontology
Volume67
Issue number2
DOIs
Publication statusPublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Periodontics

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