Rancitelli Davide, Cicciù Marco, Lini Francesco, Fumagalli Davide, Frigo Anna Chiara, Maiorana Carlo
Department of Dental Implants, Maxillofacial Surgery and Odontostomatology Unit, University of Milan, Milan, Italy.
Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Messina, Italy.
Open Dent J. 2017 Mar 31;11:171-180. doi: 10.2174/1874210601711010171. eCollection 2017.
The soft tissue healing and quality around dental implant is a current debated topic in the recent literature. The free gingival margin and the quantity and quality of the mucosa around teeth and surrounding dental implants still determine the hard and soft tissue healing status.
The aim of this study is to assess inter and intra-operative measurement concordance of a method aimed at evaluating the apico-coronal migration of free gingival margin, using intra-oral photography.
The method was tested on peri-implant tissues that were treated with a connective tissue graft on the second stage surgery. Thirty-eight measurements on 13 implants in 8 patients were recorded. An intra-oral photograph was taken for the graft and the provisional crown, which enclosed a circular landmark with a previously determined diameter. The landmark was prepared with a red-resin by the same technician. Before crown cementation, the landmark was calibrated with a digital calibrator by the main investigator, to determine the precise diameter up to two decimal numbers.
On the intra-oral photograph, the distance was measured from the most apical point of the determined landmark to the zenith of the gingiva, using an image-processing program designed for scientific multidimensional images (Image J). Three independent examiners took these measurements.
The main advantage of the present non-invasive technique is that the spatial plane of the prosthetic landmarks is the same of the tooth unlike the utilization of periodontal probe, which is generally positioned on different plans in the space (generally more vestibular).
牙种植体周围软组织的愈合情况及质量是近期文献中一个备受争议的话题。游离龈缘以及牙齿和周围牙种植体周围黏膜的数量和质量仍然决定着软硬组织的愈合状态。
本研究旨在通过口腔内摄影评估一种旨在评估游离龈缘根尖向冠方移动的方法在术中和术后测量的一致性。
该方法在二期手术中接受结缔组织移植治疗的种植体周围组织上进行测试。记录了8例患者13颗种植体的38次测量数据。为移植组织和临时冠拍摄口腔内照片，其中包含一个预先确定直径的圆形标记物。该标记物由同一名技术人员用红色树脂制作。在冠修复体粘结前，由主要研究者用数字校准仪对标记物进行校准，以确定精确到小数点后两位的直径。
在口腔内照片上，使用专为科学多维图像设计的图像处理程序（Image J），测量从确定标记物的最根尖点到牙龈顶点的距离。由三名独立的检查人员进行这些测量。
与通常放置在空间中不同平面（通常更靠前庭方向）的牙周探针不同，本无创技术的主要优点是修复体标记物的空间平面与牙齿的相同。
