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Scientific article
English

Efficacy of panoramic radiographs in the preoperative planning of posterior mandibular implants: a prospective clinical study of 1527 consecutively treated patients

Contributors

Vazquez, Lydia; Saulacic, Nikola; Belser, Urs Christophe; Bernard, Jean-Pierre

Published in

Clinical oral implants research, vol. 19, no. 1, p. 81-85

Publication date

2008

Abstract

OBJECTIVES: Various imaging techniques, including conventional radiography and computed tomography, are proposed to localize the mandibular canal prior to implant surgery. The aim of this study is to determine the incidence of altered mental nerve sensation after implant placement in the posterior segment of the mandible when a panoramic radiograph is the only preoperative imaging technique used. MATERIAL AND METHODS: The study included 1527 partially and totally edentulous patients who had consecutively received 2584 implants in the posterior segment of the mandible. Preoperative bone height was evaluated from the top of the alveolar crest to the superior border of the mandibular canal on a standard panoramic radiograph. A graduated implant scale from the implant manufacturer was used and 2 mm were subtracted as a safety margin to determine the length of the implant to be inserted. RESULTS: No permanent sensory disturbances of the inferior alveolar nerve were observed. There were two cases of postoperative paresthesia, representing 2/2584 (0.08%) of implants inserted in the posterior segment of the mandible or 2/1527 (0.13%) of patients. These sensory disturbances were minor, lasted for 3 and 6 weeks and resolved spontaneously. CONCLUSIONS: Panoramic examination can be considered a safe preoperative evaluation procedure for routine posterior mandibular implant placement. Panoramic radiography is a quick, simple, low-cost and low-dose presurgical diagnostic tool. When a safety margin of at least 2 mm above the mandibular canal is respected, panoramic radiography appears to be sufficient to evaluate available bone height prior to insertion of posterior mandibular implants; cross-sectional imaging techniques may not be necessary.

Keywords

  • Adolescent
  • Adult
  • Aged
  • Aged 80 and over
  • Bicuspid
  • Cranial Nerve Injuries/etiology
  • Dental Implantation Endosseous/adverse effects
  • Female
  • Humans
  • Jaw Edentulous/radiography/rehabilitation
  • Male
  • Mandible/surgery
  • Mandibular Nerve/injuries
  • Middle Aged
  • Models Anatomic
  • Molar
  • Paresthesia/etiology
  • Patient Care Planning
  • Prospective Studies
  • Radiographic Magnification/adverse effects
  • Radiography Dental Digital
  • Radiography Panoramic/utilization

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

VAZQUEZ, Lydia et al. Efficacy of panoramic radiographs in the preoperative planning of posterior mandibular implants: a prospective clinical study of 1527 consecutively treated patients. In: Clinical oral implants research, 2008, vol. 19, n° 1, p. 81–85. doi: 10.1111/j.1600-0501.2007.01402.x

Main files (1)

Article (Accepted version)

Identifiers

Journal ISSN

0905-7161
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Technical informations

Creation

10/02/2009 10:22:00

First validation

10/02/2009 10:22:00

Update

14/03/2023 15:00:09

Status update

14/03/2023 15:00:09

Last indexation

29/10/2024 11:07:49
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