Histological, histomorphometrical, and radiological evaluation of an experimental implant design with a high insertion torque

Joke Duyck, Livía Corpas, Stephanie Vermeiren, Toru Ogawa, Marc Quirynen, Katleen Vandamme, Reinhilde Jacobs, Ignace Naert

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Objectives: The aim of this study was to compare bone behaviour around an experimental implant design with a high insertion torque with the Astra-Tech © implant (control). Materials and methods: In ten 18-month-old male minipigs, the last premolars and first molars were extracted to provide space for two implants in each quadrant. A first set of 40 implants were placed 3 months after the extraction and 40 additional implants were installed another 2 months later. The animals were sacrificed 3 months after the first implant installation so that half of the implants had healed for 1 month and the other half for 3 months. Radiological evaluation was performed at baseline, 1 month, 2 months, and 3 months after implant installation. Bone defect depth and area, bone level changes, bone-to-implant contact density, and peri-implant bone fraction were measured histomorphometrically. Results: Radiological analyses revealed a significantly higher bone loss around the experimental implants. Histomorphometric analyses confirmed significantly more bone loss, larger marginal bone defects, and a lower overall peri-implant bone fraction around the experimental implants. Conclusion: The experimental implant design caused significantly more peri-implant bone loss compared with the control implant. As strain gauge measurements indicate excessive marginal strains around the experimental implants, osseocompression might have played a role in the observed marginal bone loss.

Original languageEnglish
Pages (from-to)877-884
Number of pages8
JournalClinical Oral Implants Research
Volume21
Issue number8
DOIs
Publication statusPublished - 2010 Aug 1

Keywords

  • Bone
  • Histology
  • Histomorphometry
  • Insertion torque
  • Minipig
  • Oral implant design
  • Osseocompression
  • Strain

ASJC Scopus subject areas

  • Oral Surgery

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