Effect of ligature placement and dental plaque on periodontal tissue breakdown in the dog.
Effect of ligature placement and dental plaque on periodontal tissue breakdown in the dog.
复制标题
结扎位置和牙菌斑对狗牙周组织破坏的影响。
DOI:
10.1902/jop.1978.49.7.343
复制
发表时间:
1978
影响因子:
4.3
通讯作者:
I. Ericsson
中科院分区:
文献类型:
--
作者:
J. Lindhe;I. Ericsson
EXPERIMENTS REPORTED by Saxe et al. , 1 Svanberg et al., 2 and Lindhe et a l . 3 , 4 have revealed that in the presence of a plaque infection, gingivitis in dogs in most instances eventually develops into progressive periodontitis. In the studies referred to the conversion of gingivitis into progressive periodontitis required between 1 and 3 years of experiment. In order to accelerate the conversion of gingivitis into periodontitis in dogs and hence to facilitate analyses of tissue alterations related to this transition, different model systems have been utilized. 5 9 These models have involved procedures such as: (1) the raising of mucoperiosteal flaps, (2) the elimination of the cortical layer of the alveolar bone crest, and (3) the application of ligatures around the neck of teeth in plaque infected dentitions. Experiments of this kind also have been carried out in rats and in monkeys. 1 0 , 1 1 A paper by Rovin et a l . 1 0 establishes the baseline for all the "ligature application" studies hitherto reported. They studied the influence of bacteria on the initiation of periodontal disease in germfree and conventional rats. In order to produce "gingival irritation, silk ligatures were placed at the cervical margins of the mandibular first molars". In the conventional, but not in the germfree rats, ligature placement within a few weeks resulted in a marked inflammation of the supporting tissues. This means, that the disease inducing potential of ligature placement, seemed to be the result of the combined presence of microorganisms and the ligature.