Oral Radiology

, Volume 16, Issue 1, pp 1–7 | Cite as

A new device for standardized intraoral projection: An observation of radiographic changes after root planing

  • Ryuji Sakagami
  • Hiroshi Kato
Original Article


The purposes of this study were to evaluate the geometric and densitometric reproducibility of a newly developed standardized X-ray system and to examine the radiographic changes after scaling/root planing as shown by this device. The system was comprised of three parts: an acrylic bite piece for the individual patient, an aluminum wedge-equipped holder, and a holder-connecting device. The experiment was performed at 32 sites of premolar and molar areas in 19 patients. Radiographs were retaken 6 weeks after scaling/root planing and the reproducibility and radiographic changes were examined. The vertical and horizontal geometric reproducibility of the system at 32 sites in 19 patients were 1.0% and 1.8%, respectively. Of 351 scaled sites, 39 (11.1%) exhibited bone regeneration, and 6 (1.7%) exhibited bone loss. These results indicate that the newly developed system has high accuracy and clinical usefulness. Early bone remodeling can be observed radiographically after 6 weeks with our standardized X-ray system.

Key Words

Standardized X-ray system Geometric reproducibility Scaling/Root planing 


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Copyright information

© Japanese Society for Oral and Maxillofacial Radiology 2000

Authors and Affiliations

  • Ryuji Sakagami
    • 1
  • Hiroshi Kato
    • 1
  1. 1.Department of Periodontology and EndodontologyHokkaido University School of DentistrySapporoJapan

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