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A new bite block for panoramic radiographs of anterior edentulous patients: A technical report.

Park JW, Symkhampha K, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC - Imaging Sci Dent (2015)

Bottom Line: A new panoramic radiography bite block similar to the bite block for dentulous patients was developed to enable proper positioning stability for edentulous patients.The height of the new bite block was 18 mm and to compensate for the horizontal edentulous space, its horizontal width was 7 mm.Patients also showed less movement and more stable positioning during panoramic radiography with the new bite block.

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: Panoramic radiographs taken using conventional chin-support devices have often presented problems with positioning accuracy and reproducibility. The aim of this report was to propose a new bite block for panoramic radiographs of anterior edentulous patients that better addresses these two issues.

Materials and methods: A new panoramic radiography bite block similar to the bite block for dentulous patients was developed to enable proper positioning stability for edentulous patients. The new bite block was designed and implemented in light of previous studies. The height of the new bite block was 18 mm and to compensate for the horizontal edentulous space, its horizontal width was 7 mm. The panoramic radiographs using the new bite block were compared with those using the conventional chin-support device.

Results: Panoramic radiographs taken with the new bite block showed better stability and bilateral symmetry than those taken with the conventional chin-support device. Patients also showed less movement and more stable positioning during panoramic radiography with the new bite block.

Conclusion: Conventional errors in panoramic radiographs of edentulous patients could be caused by unreliability of the chin-support device. The newly proposed bite block for panoramic radiographs of edentulous patients showed better reliability. Further study is required to evaluate the image quality and reproducibility of images with the new bite block.

No MeSH data available.


Related in: MedlinePlus

A. The new bite block for anterior edentulous patients. B. The conventional standard bite block for anterior dentulous patients.
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Figure 3: A. The new bite block for anterior edentulous patients. B. The conventional standard bite block for anterior dentulous patients.

Mentions: In detail, the new bite block (Fig. 3A) was designed to position anterior edentulous patients in the same manner as anterior dentulous patients who could bite into the notches of a conventional standard bite block (Fig. 3B) while undergoing panoramic radiography. The new bite block needed to compensate for the area of missing anterior teeth and resorbed alveolar bone. To compensate for those areas, statistical analysis of measured tooth lengths, facio-lingual inclinations, and resorbed anterior alveolar bone dimensions were investigated in the literature. According to Volchansky and Cleaton-Jones,13 the mean sizes of teeth were 10.0 mm among the maxillary central incisors and 8.4 mm among the mandibular central incisors in those aged 20 to 40 years. Furthermore, the mean facio-lingual inclination of the maxillary central incisors was 33.50°, and that of the mandibular central incisors was 26.44°.14 The mean angle between the occlusal plane and Frankfort horizontal plane was 6.79°.15 Thus, the angle between the maxillary central incisor and vertical plane was 26.71°, and the angle between the mandibular central incisor and vertical plane was 19.65°. Also, the extent of anterior alveolar bone resorption was 5.90 mm in non-denture wearers and 6.69 mm in denture wearers in the maxillary central incisor area, and 7.07 mm in non-denture wearers and 13.03 mm in denture wearers in the mandibular central incisor area.16


A new bite block for panoramic radiographs of anterior edentulous patients: A technical report.

Park JW, Symkhampha K, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC - Imaging Sci Dent (2015)

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

License
Show All Figures
getmorefigures.php?uid=PMC4483618&req=5

Figure 3: A. The new bite block for anterior edentulous patients. B. The conventional standard bite block for anterior dentulous patients.
Mentions: In detail, the new bite block (Fig. 3A) was designed to position anterior edentulous patients in the same manner as anterior dentulous patients who could bite into the notches of a conventional standard bite block (Fig. 3B) while undergoing panoramic radiography. The new bite block needed to compensate for the area of missing anterior teeth and resorbed alveolar bone. To compensate for those areas, statistical analysis of measured tooth lengths, facio-lingual inclinations, and resorbed anterior alveolar bone dimensions were investigated in the literature. According to Volchansky and Cleaton-Jones,13 the mean sizes of teeth were 10.0 mm among the maxillary central incisors and 8.4 mm among the mandibular central incisors in those aged 20 to 40 years. Furthermore, the mean facio-lingual inclination of the maxillary central incisors was 33.50°, and that of the mandibular central incisors was 26.44°.14 The mean angle between the occlusal plane and Frankfort horizontal plane was 6.79°.15 Thus, the angle between the maxillary central incisor and vertical plane was 26.71°, and the angle between the mandibular central incisor and vertical plane was 19.65°. Also, the extent of anterior alveolar bone resorption was 5.90 mm in non-denture wearers and 6.69 mm in denture wearers in the maxillary central incisor area, and 7.07 mm in non-denture wearers and 13.03 mm in denture wearers in the mandibular central incisor area.16

Bottom Line: A new panoramic radiography bite block similar to the bite block for dentulous patients was developed to enable proper positioning stability for edentulous patients.The height of the new bite block was 18 mm and to compensate for the horizontal edentulous space, its horizontal width was 7 mm.Patients also showed less movement and more stable positioning during panoramic radiography with the new bite block.

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: Panoramic radiographs taken using conventional chin-support devices have often presented problems with positioning accuracy and reproducibility. The aim of this report was to propose a new bite block for panoramic radiographs of anterior edentulous patients that better addresses these two issues.

Materials and methods: A new panoramic radiography bite block similar to the bite block for dentulous patients was developed to enable proper positioning stability for edentulous patients. The new bite block was designed and implemented in light of previous studies. The height of the new bite block was 18 mm and to compensate for the horizontal edentulous space, its horizontal width was 7 mm. The panoramic radiographs using the new bite block were compared with those using the conventional chin-support device.

Results: Panoramic radiographs taken with the new bite block showed better stability and bilateral symmetry than those taken with the conventional chin-support device. Patients also showed less movement and more stable positioning during panoramic radiography with the new bite block.

Conclusion: Conventional errors in panoramic radiographs of edentulous patients could be caused by unreliability of the chin-support device. The newly proposed bite block for panoramic radiographs of edentulous patients showed better reliability. Further study is required to evaluate the image quality and reproducibility of images with the new bite block.

No MeSH data available.


Related in: MedlinePlus