Low-field magnetic resonance imaging for implant dentistry

Crawford F Gray, Thomas William Redpath, Francis Smith

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Objective: To evaluate the use of a low-field magnetic resonance scanner for assessment of available bone for placement of osseo-integrated dental implants.

Methods: Eleven Patients were examined to assess suitability for implant placement using a 0.2 tesla 'open' scanner. Imaging/surgical templates were constructed, with gadolinium markers to allow accurate location of the implant sites.

Results: In all cases, localisation of potential implant sites was easily made and full information in all three planes readily available. Artefacts were few and localised, (noted on one site in one case only). Vital structures (nerves and vessels), and the variable geometry of the floor of the maxillary sinus were clearly seen, and cortical bone delineated from cancellous. The appearance of soft tissues in the scan allowed the surgeon to assess the final profile of the patient.

Conclusion: Low-field magnetic resonance imaging has definite potential for pre-implant assessment. Full sectional information is readily available at ally desired plane with no need for reformatting. The information for accurate and safe implant placement is clear. The technique uses no ionising radiation. Further work is needed to evaluate spatial distortion caused by magnetic susceptibility effects at air/tissue interfaces, but our calculations indicate that at low field, using an appropriate protocol, the effect will not be substantial.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalDento Maxillo Facial Radiology
Volume27
Issue number4
Publication statusPublished - Jul 1998

Keywords

  • magnetic resonance imaging
  • dental implantation
  • dental implantation, endosseous
  • SCAN

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