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Comparison of dental radiography and computed tomography: measurement of dentoalveolar structures in healthy, small-sized dogs and cats

Journal of Veterinary Science 2020년 21권 5호 p.75 ~ 75
이승희, 이기창, 김현아, 안정수, 한준호, 이태권, 정호균, 조영권,
소속 상세정보
이승희 ( Lee Seung-Hee ) - Chonbuk National University College of Veterinary Medicine
이기창 ( Lee Ki-Chang ) - Chonbuk National University College of Veterinary Medicine
김현아 ( Kim Hyeon-A ) - Chonbuk National University College of Veterinary Medicine
안정수 ( An Jeong-Su ) - Chonbuk National University College of Veterinary Medicine
한준호 ( Han Jun-Ho ) - Chonbuk National University College of Veterinary Medicine
이태권 ( Lee Tae-Kwon ) - Chonbuk National University College of Veterinary Medicine
정호균 ( Jeong Ho-Gyun ) - Chonbuk National University College of Veterinary Medicine
조영권 ( Cho Young-Kwon ) - Cheongju University College of Health Sciences

Abstract


Background: Dental diseases are common in dogs and cats, and accurate measurements of dentoalveolar structure are important for planning of treatment. The information that the comparison computed tomography (CT) with dental radiography (DTR) is not yet reported in veterinary medicine.

Objectives: The purpose of this study was to compare the DTR with CT of dentoalveolar structures in healthy dogs and cats, and to evaluate the CT images of 2 different slice thicknesses (0.5 and 1.0 mm).

Methods: We included 6 dogs (2 Maltese and 1 Spitz, Beagle, Pomeranian, mixed, 1 to 8 years, 4 castrated males, and 2 spayed female) and 6 cats (6 domestic short hair,8 months to 3 years, 4 castrated male and 2 spayed female) in this study. We measured the pulp cavity to tooth width ratio (P/T ratio) and periodontal space of maxillary and mandibular canine teeth, maxillary fourth premolar, mandibular first molar, maxillary third premolar and mandibular fourth premolar.

Results: P/T ratio and periodontal space in the overall dentition of both dogs and cats were smaller in DTR compared to CT. In addition, CT images at 1.0 mm slice thickness was generally measured to be greater than the images at 0.5 mm slice thickness.

Conclusions: The results indicate that CT with thin slice thickness provides more accurate information on the dentoalveolar structures. Additional DTR, therefore, may not be required for evaluating dental structure in small-sized dogs and cats.

키워드

Dental radiography; multi-detector computed tomography; pulp cavity; periodontal space

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