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Comparison of the reproducibility of panoramic radiographs between dentulous and edentulous patients.

Park JW, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC - Imaging Sci Dent (2014)

Bottom Line: The mandibular ramus and angle areas showed statistically lower mean coefficients of variation than the condylar head and zygomatic areas in the dentulous group.The mandibular angle area showed a significantly lower mean coefficient of variation than the zygomatic area in the edentulous group.By comparing the two groups, each ICC of the edentulous group was lower than that of the dentulous group, and the mean coefficients of variation of the mandibular ramus area, zygomatic area, left condylar inclination, and ramus ratio between the right and the left in the edentulous group were significantly higher than those in the dentulous group.

View Article: PubMed Central - PubMed

Affiliation: Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.

ABSTRACT

Purpose: This study was performed to evaluate the reproducibility of panoramic radiographs of dentulous and edentulous patients.

Materials and methods: The reproducibility of panoramic radiographs was evaluated using the panoramic radiographs acquired from 30 anterior dentulous patients by using a common biting positioning device (dentulous group) and 30 anterior edentulous patients by using chin-support devices to take a panoramic radiograph (edentulous group), respectively; these patients had undergone 3 or more panoramic radiographs. The widths and angles between the designated landmarks were measured on the panoramic radiographs, and the reproducibility was evaluated using the intraclass correlation coefficient (ICC) and the coefficient of variation.

Results: In the dentulous and edentulous groups, the ICCs of the mandibular ramus and mandibular angle areas were higher than the condylar head and zygomatic areas. The mandibular ramus and angle areas showed statistically lower mean coefficients of variation than the condylar head and zygomatic areas in the dentulous group. The mandibular angle area showed a significantly lower mean coefficient of variation than the zygomatic area in the edentulous group. By comparing the two groups, each ICC of the edentulous group was lower than that of the dentulous group, and the mean coefficients of variation of the mandibular ramus area, zygomatic area, left condylar inclination, and ramus ratio between the right and the left in the edentulous group were significantly higher than those in the dentulous group.

Conclusion: Biting positioning for dentulous patients provided better positioning reproducibility than chin-support positioning when performing panoramic radiography for edentulous patients.

No MeSH data available.


Related in: MedlinePlus

A. The conventional standard bite block is used for anterior dentulous patients. B. The conventional chin support-device is used for anterior edentulous patients.
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Figure 1: A. The conventional standard bite block is used for anterior dentulous patients. B. The conventional chin support-device is used for anterior edentulous patients.

Mentions: In order to evaluate the reproducibility of panoramic radiographs, images of 30 anterior dentulous patients (dentulous group) and 30 edentulous patients (edentulous group) were selected. All of them had 3 or more panoramic radiographs; the dentulous patients underwent the radiographs using a conventional standard bite block (Fig. 1A), and the edentulous patients by using a conventional chin-support device (Fig. 1B) in Seoul National University Dental Hospital. Thereafter, 3 panoramic radiographs were collected from each of the selected 60 patients. In total, 180 panoramic radiographs were collected, and each group consisted of 90 panoramic radiographs.


Comparison of the reproducibility of panoramic radiographs between dentulous and edentulous patients.

Park JW, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC - Imaging Sci Dent (2014)

A. The conventional standard bite block is used for anterior dentulous patients. B. The conventional chin support-device is used for anterior edentulous patients.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4061305&req=5

Figure 1: A. The conventional standard bite block is used for anterior dentulous patients. B. The conventional chin support-device is used for anterior edentulous patients.
Mentions: In order to evaluate the reproducibility of panoramic radiographs, images of 30 anterior dentulous patients (dentulous group) and 30 edentulous patients (edentulous group) were selected. All of them had 3 or more panoramic radiographs; the dentulous patients underwent the radiographs using a conventional standard bite block (Fig. 1A), and the edentulous patients by using a conventional chin-support device (Fig. 1B) in Seoul National University Dental Hospital. Thereafter, 3 panoramic radiographs were collected from each of the selected 60 patients. In total, 180 panoramic radiographs were collected, and each group consisted of 90 panoramic radiographs.

Bottom Line: The mandibular ramus and angle areas showed statistically lower mean coefficients of variation than the condylar head and zygomatic areas in the dentulous group.The mandibular angle area showed a significantly lower mean coefficient of variation than the zygomatic area in the edentulous group.By comparing the two groups, each ICC of the edentulous group was lower than that of the dentulous group, and the mean coefficients of variation of the mandibular ramus area, zygomatic area, left condylar inclination, and ramus ratio between the right and the left in the edentulous group were significantly higher than those in the dentulous group.

View Article: PubMed Central - PubMed

Affiliation: Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.

ABSTRACT

Purpose: This study was performed to evaluate the reproducibility of panoramic radiographs of dentulous and edentulous patients.

Materials and methods: The reproducibility of panoramic radiographs was evaluated using the panoramic radiographs acquired from 30 anterior dentulous patients by using a common biting positioning device (dentulous group) and 30 anterior edentulous patients by using chin-support devices to take a panoramic radiograph (edentulous group), respectively; these patients had undergone 3 or more panoramic radiographs. The widths and angles between the designated landmarks were measured on the panoramic radiographs, and the reproducibility was evaluated using the intraclass correlation coefficient (ICC) and the coefficient of variation.

Results: In the dentulous and edentulous groups, the ICCs of the mandibular ramus and mandibular angle areas were higher than the condylar head and zygomatic areas. The mandibular ramus and angle areas showed statistically lower mean coefficients of variation than the condylar head and zygomatic areas in the dentulous group. The mandibular angle area showed a significantly lower mean coefficient of variation than the zygomatic area in the edentulous group. By comparing the two groups, each ICC of the edentulous group was lower than that of the dentulous group, and the mean coefficients of variation of the mandibular ramus area, zygomatic area, left condylar inclination, and ramus ratio between the right and the left in the edentulous group were significantly higher than those in the dentulous group.

Conclusion: Biting positioning for dentulous patients provided better positioning reproducibility than chin-support positioning when performing panoramic radiography for edentulous patients.

No MeSH data available.


Related in: MedlinePlus