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首页> 外文期刊>The Journal of Prosthetic Dentistry >Soft tissue stability at the facial aspect of gingivally converging abutments in the esthetic zone: a pilot clinical study.
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Soft tissue stability at the facial aspect of gingivally converging abutments in the esthetic zone: a pilot clinical study.

机译：审美区龈交界性基台面部方面的软组织稳定性：一项临床试验研究。

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STATEMENT OF PROBLEM: The literature indicates that 0.5 to 1.5 mm of gingival recession most often occurs within the first months after implant placement or abutment connection. PURPOSE: The purpose of this pilot study was to evaluate the effect of a concave transmucosal profile on the vertical stability of soft tissues at the facial aspect of dental implants. MATERIAL AND METHODS: Fifty-four implants were placed in esthetically demanding sites in 41 patients (17 women, 24 men; age range of 23 to 62 years, mean 40.3 years; 5 smokers), primarily following a 1-stage approach. Twenty-five implants were placed immediately after extraction. Experimental concave titanium (n=49) and zirconia abutments (n=5) were used, and a provisional crown was placed at the same session. Digital photographs were made perpendicularly to the facial aspect of the teeth at abutment placement, and at 1, 3, 6, 12, 18, and 24 months, and enlarged views were subsequently analyzed by an independent examiner. Vertical changes in softtissue levels were measured, and the definitive esthetic result was evaluated subjectively (poor to excellent). Data were analyzed with descriptive statistics. RESULTS: Twenty-four implants were evaluated at 24 months, 20 at 18 months, and 8 at 12 months. Vertical augmentation or no recession in soft tissue was observed in 87% of the situations, and in no situation was recession greater than 0.5 mm found. The gingival level remained stable at 12, 18, and 24 months. The average esthetic outcome was rated as 4.5 (very good to excellent) on a 0- to 5-point scale. CONCLUSIONS: The concave, gingivally converging abutments used in the study allowed for above-average soft tissue outcomes.
机译：问题陈述：文献表明，在种植体植入或基台连接后的最初几个月内，最常发生0.5至1.5 mm的牙龈退缩。目的：这项初步研究的目的是评估凹形透粘膜轮廓对牙种植体面部方面软组织垂直稳定性的影响。材料和方法：主要通过1阶段方法，将41例患者（17位女性，24位男性;年龄范围23至62岁，平均40.3岁; 5位吸烟者）的审美要求高的部位植入了54个植入物。拔除后立即放置25个植入物。使用实验凹面钛（n = 49）和氧化锆基台（n = 5），并在同一疗程中放置一个临时牙冠。在基台位置以及1、3、6、12、18和24个月时，垂直于牙齿的面部拍摄数码照片，随后由独立的检查人员分析放大的图像。测量软组织水平的垂直变化，并主观评估最终的美学结果（差至极好）。使用描述性统计数据分析数据。结果：24个植入物在24个月，20个在18个月和8个在12个月时进行了评估。在87％的情况下，在软组织中未观察到垂直增大或没有凹陷，在任何情况下均未发现凹陷大于0.5 mm。牙龈水平保持稳定在12、18和24个月。 0至5分制的平均审美结果为4.5（非常好）。结论：本研究中使用的凹形，齿龈会聚的基台允许软组织的结果高于平均水平。

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