Harvey C E, Shofer F S, Laster L
Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia 19104-6010, USA.
J Vet Dent. 1996 Sep;13(3):101-5.
In 1350 client-owned dogs in North America, the association of calculus, gingival inflammation and periodontal bone loss with diet (dry food only, or other than dry food only), and with access to other chewing materials was analyzed. There were few apparent differences seen in dogs fed dry food only compared with those fed other than dry food only. There was progressively less accumulation of calculus, less gingival inflammation and less periodontal bone loss in dogs that were given access to more types of chewing materials (rawhides, bones, biscuits, chew toys) compared with dogs given access to fewer or no chewing materials. When the effects of individual chewing materials were analyzed, access to rawhides overall had the greatest apparent periodontal protective effect, and this effect was more apparent in dogs fed dry food only compared with those fed other than dry food only.
在北美1350只宠物犬中，分析了牙结石、牙龈炎症和牙周骨丧失与饮食（仅干粮或非仅干粮）以及是否有其他咀嚼材料的关系。仅喂食干粮的犬与非仅喂食干粮的犬相比，几乎没有明显差异。与可获得较少种类或没有咀嚼材料的犬相比，可获得更多种类咀嚼材料（生皮、骨头、饼干、咀嚼玩具）的犬，牙结石堆积逐渐减少，牙龈炎症减轻，牙周骨丧失减少。当分析个体咀嚼材料的作用时，总体而言，可获得生皮对牙周有最大的明显保护作用，且这种作用在仅喂食干粮的犬中比非仅喂食干粮的犬中更明显。
