ArticleAnimals : an open access journal from MDPI2026
Tomographic Characterization of the European Shorthair Cat Orbital and Infraorbital Regions.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Accurate knowledge of orbital and infraorbital regions and their relation to pterygopalatine fossa is essential for improving safety and effectiveness of infraorbital and maxillary nerve blocks and for guiding surgical procedures in dentistry. Previous studies relied on multiplanar or three-dimensional reconstructions of computed tomographic (CT) images, requiring additional processing and expertise. Scans from 24 European Shorthair cats were analyzed retrospectively, to provide anatomical landmarks and reference values for orbital and infraorbital regions, using a simplified approach based on linear measurements taken directly from sagittal, transverse and dorsal CT planes. Repeatability of measurements was confirmed, with all parameters showing strong agreement across sessions. Significant differences were observed between mean infraorbital canal length in females (5.02 ± 0.42) and males (5.46 ± 0.46), and skull length in females (88.06 ± 3.16) and males (94.54 ± 4.52). Males exhibited 0.42 mm larger infraorbital major axis. After adjustment for skull size, only selected differences persisted, reflecting proportionally longer skulls in males. This study contributes practical reference data to support the limited safe depth for infraorbital/maxillary nerve blocks and the associated risk of globe penetration if instruments are advanced too far into the infraorbital canal. By proposing this simplified and clinic-ready workflow, our results provide foundation for standardization of feline orbital and infraorbital morphometry.
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