Experimental breakdown of peri-implant and periodontal tissues. A study in the beagle dog.
Experimental breakdown of peri-implant and periodontal tissues. A study in the beagle dog.
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DOI：
10.1034/j.1600-0501.1992.030102.x
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发表时间：
1992-03-01
影响因子：
4.3
通讯作者：
Marinello, C
中科院分区：
文献类型：
--
作者：
Lindhe, J;Berglundh, T;Marinello, C
本实验的目的是研究种植体周和牙周组织中由于结扎器放置和牙周菌斑形成而造成的损害。这项实验是在5只15个月大的比格犬身上进行的。他们被给予了一种允许形成严重斑块的饮食。拔除下颌右前磨牙，3个固定器(上午10点)。Branemmark)安装并执行支座连接。在为期6个月的斑块控制期接近尾声时，进行了临床和放射学检查。在2个种植体和对侧前磨牙处，将结扎器放置在龈下位置。斑块被允许积累。6周后，取下结扎线。1个月后，复查临床和放射学检查，采集龈下微生物区系标本。从牙齿和种植体部位采集活组织并进行组织计量学和形态计量学分析。临床和组织学检查结果显示：(I)种植体的临床和放射学征象比牙齿更明显；(Ii)软组织病变在种植体的大小大于牙齿；(Iii)病变在种植体而不是在牙齿延伸到骨髓。
The objective of the present experiment was to study lesions in the peri-implant and periodontal tissues resulting from ligature placement and subgingival plaque formation. The experiment was performed in 5 beagle dogs which at the start of the study were about 15 months old. They were given a diet which allowed gross plaque formation. The mandibular right premolars were extracted, 3 fixtures (a.m. Branemark) installed and abutment connection performed. Towards the end of a 6-month plaque control period, a clinical and radiographic examination was performed. Ligatures were placed in a subgingival position at 2 of the implants and the contralateral premolars. Plaque was allowed to accumulate. After 6 weeks, the ligatures were removed. 1 month later, the clinical and radiographical examination was repeated and samples from the subgingival microbiota obtained. Biopsies from the teeth and implant sites were harvested and processed for histometric and morphometric analyses. The results from the clinical and histological examinations revealed that: (i) clinical and radiographic signs of tissue destruction were more pronounced at implants than at teeth; (ii) the size of the soft tissue lesion was larger at implants than at teeth; (iii) the lesion at implants but not at teeth extended into the bone marrow.