Imaging Sci Dent.  2018 Jun;48(2):103-109. 10.5624/isd.2018.48.2.103.

Uses of cone-beam computed tomography in San José, Costa Rica

• Barba L
• Berrocal A
• Hidalgo A

• KMID: 2413921
• DOI: http://doi.org/10.5624/isd.2018.48.2.103

Abstract

PURPOSE
To analyze cone-beam computed tomography (CBCT) use, indications, and exposure parameters in San José, Costa Rica.
MATERIALS AND METHODS
A cross-sectional study was performed. All CBCT examinations over a period of 6 months at 2 radiological centers in San José, Costa Rica were evaluated. The examinations were performed with Veraview EPOC X550 and Veraviewepocs 3D R100 equipment. The patients' age and sex, clinical indication for CBCT, region of interest (ROI), repeat examinations, specialty of the referring dentist, field-of-view (FOV), tube voltage (kV), tube current (mA), and radiation dose (µGy) were evaluated. Patients were classified by age as children (≤12 years), adolescents (13-18 years), and adults (≥19 years).
RESULTS
The mean age of the 526 patients was 49.4 years. The main indications were implant dentistry and dental trauma. The most frequent ROIs were posterior, while anterior ROIs were much less common. The highest percentage of repeat examinations was in children. Fifty-six percent of the referring dentists were specialists. The most commonly used FOV was small. The mean tube voltage and current were 79.8 kV and 7.4 mA for Veraview EPOC X550 and 89.9 kV and 6 mA for Veraviewepocs 3D R100, respectively. The mean doses for children, adolescents, and adults were 6.9 µGy, 8.4 µGy, and 7.8 µGy, respectively.
CONCLUSION
Although CBCT was most commonly used in adults for implant dentistry, most repeat examinations were in children, and the highest mean dose was in adolescents. Additional dose optimization efforts should be made by introducing low-dose protocols for children and adolescents.

Keyword

Cone-Beam Computed Tomography; Radiation Dosage; Radiation Protection

MeSH Terms

Adolescent
Adult
Child
Cone-Beam Computed Tomography*
Costa Rica*
Cross-Sectional Studies
Dentistry
Dentists
Humans
Radiation Dosage
Radiation Protection
Specialization

Figure

• 

  Fig. 1 Frequency of clinical indications according to field-of-view (FOV) size. UTL: unerupted tooth localization, ER: external resorption, PA: periodontal assessment, APp: assessment of periapical disease, DT: dental trauma, E: endodontics, Ex: exodontia, ID: implant dentistry, BP: bony pathosis, TMJ: temporomandibular joint, FT: facial trauma. LI: localized indications GI: generalized indications

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