Olander Julia, Barkarmo Sargon, Hammarström Johansson Petra, Wennerberg Ann, Stenport Victoria Franke
Department of Prosthodontics and Dental Materials Science, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, GothenburgSweden.
J Oral Maxillofac Res. 2023 Sep 30;14(3):e2. doi: 10.5037/jomr.2023.14302. eCollection 2023 Jul-Sep.
The purpose of this pilot study is to compare gene expression in mucosa around dental implants with zirconia abutment to titanium and investigate presence of particles in mucosa samples and on implant heads.
Ten patients with a single implant supported prosthesis connected to zirconia or titanium abutments were invited at the five-year control. A clinical examination and a survey on experience of function and appearance were conducted. A mucosa biopsy taken in close vicinity to the implant were analysed by real-time polymerase chain reaction (qPCR) and presence of particles in a scanning electron microscope/energy-dispersive X-ray spectroscope (SEM/EDX). Cytological smear samples were collected and analysed through inductively coupled plasma mass spectrometry (ICP-MS) to investigate presence of particles on implant heads.
In total, 9 patients participated in the study, five with titanium abutments and four with zirconia abutments. All patients were satisfied with function and aesthetics. Titanium and iron particles were detected in mucosa biopsies. The ICP - MS analysis demonstrated presence of zirconia and titanium. Several proinflammatory genes were upregulated in the zirconia abutment group.
Around zirconia abutments a slight increase in proinflammatory response and amount of wear particles was seen as compared to titanium. Wear particles of titanium were present in all soft tissue samples, however zirconia particles only in the samples from implants heads/mucosa with zirconia abutments.
本初步研究的目的是比较使用氧化锆基台的牙种植体周围黏膜与钛基台周围黏膜的基因表达,并调查黏膜样本和种植体头部颗粒的存在情况。
邀请10名使用连接氧化锆或钛基台的单颗种植体支持修复体的患者进行五年期复查。进行了临床检查以及关于功能和外观体验的调查。通过实时聚合酶链反应(qPCR)分析在种植体附近采集的黏膜活检样本,并使用扫描电子显微镜/能量色散X射线光谱仪(SEM/EDX)检测颗粒的存在情况。收集细胞学涂片样本并通过电感耦合等离子体质谱法(ICP-MS)进行分析,以调查种植体头部颗粒的存在情况。
共有9名患者参与了研究,其中5名使用钛基台,4名使用氧化锆基台。所有患者对功能和美观都很满意。在黏膜活检样本中检测到了钛和铁颗粒。ICP-MS分析表明存在氧化锆和钛。氧化锆基台组中几种促炎基因上调。
与钛基台相比,氧化锆基台周围的促炎反应和磨损颗粒量略有增加。所有软组织样本中均存在钛磨损颗粒,然而氧化锆颗粒仅存在于来自使用氧化锆基台的种植体头部/黏膜的样本中。