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

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 Korostoff J, "Radiologic assessment of the periodontal patient" 60 (60): 91-104, 2016

2 Hirschmann PN, "Radiographic interpretation of chronic periodontitis" 37 (37): 3-9, 1987

3 Knowlton FF, "Pulp cavity-tooth width ratios from known-age and wild-caught coyotes determined by radiography" 29 : 236-244, 2001

4 Pavlica Z, "Periodontal disease burden and pathological changes in organs of dogs" 25 (25): 97-105, 2008

5 Tsugawa AJ, "How to obtain and interpret periodontal radiographs in dogs" 15 (15): 204-210, 2000

6 Glickman LT, "Evaluation of the risk of endocarditis and other cardiovascular events on the basis of the severity of periodontal disease in dogs" 234 (234): 486-494, 2009

7 Logan EI, "Effects of a dental food on plaque accumulation and gingival health in dogs" 19 (19): 15-18, 2002

8 Kyoungsun Park, "Determining the age of cats by pulp cavity/tooth width ratio using dental radiography" 대한수의학회 15 (15): 557-561, 2014

9 Soukup JW, "Comparison of the diagnostic image quality of the canine maxillary dentoalveolar structures obtained by cone beam computed tomography and 64-multidetector row computed tomography" 32 (32): 80-86, 2015

10 Campbell RD, "Comparing intraoral radiography and computed tomography for detecting radiographic signs of periodontitis and endodontic disease in dogs : an agreement study" 3 : 68-, 2016

11 Fuhrmann RA, "Assessment of alveolar bone loss with high resolution computed tomography" 30 (30): 258-263, 1995

12 Eickholz P, "Accuracy of radiographic assessment of interproximal bone loss in intrabony defects using linear measurements" 108 (108): 70-73, 2000

13 Iikubo M, "Accuracy of intraoral radiography, multidetector helical CT, and limited cone-beam CT for the detection of horizontal tooth root fracture" 108 (108): e70-e74, 2009

14 Misch KA, "Accuracy of cone beam computed tomography for periodontal defect measurements" 77 (77): 1261-1266, 2006