Yu Su-Been, Song Bong-Gyu, Cheon Kyeong-Jun, Kim Ju-Won, Kim Young-Hee, Yang Byoung-Eun
1Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang, South Korea.
2Department of Oral Implantology, Graduate School of Clinical Dentistry, Hallym University, Chuncheon, South Korea.
Maxillofac Plast Reconstr Surg. 2018 Sep 10;40(1):26. doi: 10.1186/s40902-018-0162-4. eCollection 2018 Dec.
This study aimed to evaluate the mechanical, biological, and esthetic stability of a zirconium abutment according to evidence-based dentistry.
An electronic search was performed. Domestic studies were found using the keywords "zirconia abutments" and "zirconium abutment" in KMbase, KoreaMed, and the National Assembly Library, and international studies were found using the same keywords in PubMed. All identified studies were divided by evidence level from the viewpoint of the research type utilizing the evidence-based review manual. A total of 102 domestic studies (with Korean language) were found, and 9 of these studies were selected. In these nine studies, 3 had evidence level 3 and 6 had evidence level 4. A total of 97 international studies (with English language) were found, and 19 were selected. Among these 19 studies, 5 had evidence level 2 and 7 had evidence level 3, whereas the remainder had evidence level 4. According to the studies, zirconium abutments are mechanically, biologically, and esthetically stable, but the evidence level of these studies is low, and the follow-up duration is no longer than 5 years.
All examined studies verified the mechanical stability of zirconium abutments for a period no longer than 5 years. Therefore, a long-term clinical observation is needed. Zirconium abutments are thought to be biologically stable, but they are not superior to titanium abutments. As the esthetic stability of such abutments had a low evidence level in the studies that examined here, a much higher evidence level is needed.
本研究旨在依据循证牙科评估锆基台的机械稳定性、生物稳定性和美学稳定性。
进行了电子检索。在韩国知识信息服务平台（KMbase）、韩国医学数据库（KoreaMed）和国会图书馆中使用关键词“氧化锆基台”和“锆基台”检索国内研究，在PubMed中使用相同关键词检索国际研究。从研究类型的角度，利用循证综述手册将所有检索到的研究按证据水平进行划分。共检索到102项国内研究（韩语），其中9项被选中。在这9项研究中，3项证据水平为3级，6项证据水平为4级。共检索到97项国际研究（英语），其中19项被选中。在这19项研究中，5项证据水平为2级，7项证据水平为3级，其余证据水平为4级。根据这些研究，锆基台在机械、生物和美学方面是稳定的，但这些研究的证据水平较低，且随访时间不超过5年。
所有纳入研究均证实锆基台在不超过5年的时间内具有机械稳定性。因此，需要进行长期临床观察。锆基台被认为具有生物稳定性，但并不优于钛基台。由于在此处研究中此类基台的美学稳定性证据水平较低，需要更高的证据水平。
