Surgical extrusion allows a ferrule to be obtained without the use of orthodontic extrusion or the need to remove hard and soft tissues. However, after the healing period, the soft tissue of the extruded tooth might become thinner, creating an unesthetic gingival margin. Unlike other preparation techniques, the biologically oriented preparation technique provides increased long-term gingival thickness. This article describes the treatment of 3 patients with teeth with no ferrule that were surgically extruded and restored with the biologically oriented preparation technique .

中文翻译：

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手术挤压牙的生物定向制备技术：临床报告

手术挤压允许在不使用正畸挤压或需要去除硬组织和软组织的情况下获得套圈。然而，在愈合期之后，挤出的牙齿的软组织可能会变薄，从而产生不美观的牙龈边缘。与其他制备技术不同，生物导向制备技术提供了增加的长期牙龈厚度。本文介绍了3例无套圈牙齿，采用生物定向制备技术进行手术挤压修复的治疗。