Influence of rotation around axial axis and rotation and tilt around sagittal axis on measurements in panoramic radiographic images

Mehrdad Abdinian; Vida Nikouei; Mahdieh Sadat Khatami Bidgoli; Reyhaneh Faghihian; Sajjad Ghorbanizadeh

doi:10.4103/0976-433X.176485

| Users Online: 953

ORIGINAL ARTICLE

Year : 2016 | Volume : 7 | Issue : 1 | Page : 1-5

Influence of rotation around axial axis and rotation and tilt around sagittal axis on measurements in panoramic radiographic images

Mehrdad Abdinian¹, Vida Nikouei², Mahdieh Sadat Khatami Bidgoli², Reyhaneh Faghihian³, Sajjad Ghorbanizadeh⁴
¹ Department of Oral Maxillofacial Radiology, Dental Implant Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
² Dentist, Esfahan, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
³ Postgraduate Student of Pediatric Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
⁴ Department of Oral and Maxillofacial Radiology, Dental School, Lorestan University of Medical Sciences, Khorramabad, Iran

Correspondence Address:
Sajjad Ghorbanizadeh
Department of Oral and Maxillofacial Radiology, Dental School, Lorestan University of Medical Sciences, Khoram Abad
Iran

Source of Support: None, Conflict of Interest: None

Check

DOI: 10.4103/0976-433X.176485

Introduction: Patient's head should be adjusted carefully or else dimensions in panoramic radiograph are not accurate. This study evaluated the effect of rotation around axial and sagittal axis on magnification in each area of the jaws. Materials and Methods: Seven human skulls were marked horizontally and vertically. Each skull was imaged in the ideal and rotated positions. Rotations were 1–2, 2–4, and 4–6° around axial axis and same degrees of rotations and tilts was applied to left around sagittal axis. Results: Maxillary and mandibular vertical dimensions were both affected significantly by the extension and flexion of the skull. Changes of horizontal dimensions were significant only in anterior maxilla in downward rotation and in anterior mandible in upward rotation (P ≤ 0.05). Horizontal dimensions were the most affected dimensions by rotation and tilt. Left side dimensions were affected more than right side. Tilts more than 4 degrees and rotations more than 2° around sagittal axis lead to significant differences in horizontal dimensions (P ≤ 0.05). Conclusion: Rotation around axial and sagittal axis and tilt around sagittal axis up to 6° cause significant dimensional changes in some areas of the jaws, but these changes are clinically negligible.

[FULL TEXT] [PDF]*

Table of Contents

Similar in PUBMED

Search Pubmed for

Search in Google Scholar for

Related articles

Citation Manager

Access Statistics

Reader Comments

Email Alert*

Add to My List*

* Requires registration (Free)

Article Access Statistics

Viewed	1865

Printed	89

Emailed	0

PDF Downloaded	187

Comments	[Add]