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首页> 外文期刊>The Journal of Prosthetic Dentistry >The influence of intracrevicular crown margins on gingival health: preliminary findings.
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The influence of intracrevicular crown margins on gingival health: preliminary findings.

机译：沟内冠缘对牙龈健康的影响：初步发现。

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STATEMENT OF PROBLEM: The effect on gingival tissue of various crown materials in combination with different abutment biomaterials should be investigated. PURPOSE: This in vivo study determined the gingival health and subgingival levels of periodontal inflammation-associated bacteria adjacent to various crown and abutment material combinations. MATERIAL AND METHODS: . Patients in the study received 1 of 5 treatments: an all-ceramic crown luted to a natural tooth, a metal-ceramic (titanium) crown luted to natural tooth, a metal-ceramic (high noble alloy) crown luted to natural tooth, an all-ceramic crown luted to a titanium implant abutment, or a metal-ceramic (high noble alloy) crown luted to a titanium implant abutment. Plaque was collected at least 6 months after luting by paper point from the gingival sulcus of each crown and an adjacent unrestored (control) tooth. DNA probe analysis was performed to determine the levels of Porphyromonas gingivalis, Prevotella intermedia, and Actinobacillus actinomycetemcomitans. In addition, plaque, gingival redness, swelling, and bleeding scores were recorded with use of the California Dental Association scale. Statistical analysis was used to determine the effect of restoration/abutment type on levels of the bacterial species and clinical parameters pertaining to gingival health. RESULTS: None of the sulci sampled contained detectable levels of the 3 bacteria. Plaque levels and gingival redness, swelling, and bleeding scores were low. All treatment groups had similar soft tissue response as measured by gingival redness, swelling, and bleeding. Plaque scores from all-ceramic crown/implant abutment sites were higher than plaque scores from all-ceramic crownatural tooth sites. However, differences between experimental and control sites within the same treatment group were not observed (P>.05) with any of the 4 clinical measures. CONCLUSION: In patients with suitable oral hygiene, tooth-supported and implant-supported crowns with intracrevicular margins were not predisposed to unfavorable gingival and microbial responses.
机译：问题陈述：应研究各种冠材料与不同基台生物材料的组合对牙龈组织的影响。目的：这项体内研究确定了与各种牙冠和基台材料组合相邻的牙周炎症相关细菌的牙龈健康和牙龈下水平。材料与方法： 。该研究中的患者接受了5种治疗方法中的1种：全瓷冠冠到天然牙齿，金属陶瓷（钛）冠冠到天然牙齿，金属陶瓷（高贵合金）冠冠到天然牙齿，全瓷冠冠入钛种植体基台，或金属陶瓷（高贵金属）冠冠入钛种植体基台。至少6个月后，通过纸点从每个冠和相邻的未修复（对照）牙齿的龈沟中收集菌斑。进行了DNA探针分析，以确定牙龈卟啉单胞菌，中间型普氏杆菌和放线放线杆菌的水平。此外，使用加利福尼亚牙科协会量表记录斑块，牙龈发红，肿胀和出血分数。统计分析用于确定修复/基台类型对与牙龈健康有关的细菌种类和临床参数水平的影响。结果：所有采样的龈沟中均未检测到3种细菌的水平。菌斑水平和牙龈发红，肿胀和出血分数很低。通过牙龈发红，肿胀和出血来衡量，所有治疗组的软组织反应均相似。全瓷冠/种植体基台部位的牙菌斑分数高于全瓷冠/天然牙部位的菌斑分数。然而，用这4种临床措施中的任何一种，均未观察到同一治疗组内实验部位和对照部位之间的差异（P> 0.05）。结论：在具有适当口腔卫生的患者中，牙齿支撑和种植体支撑的冠状沟内边缘不易产生不利的牙龈和微生物反应。

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