Medical Journal of the Islamic Republic Of Iran

en The Comparison of Survival Rates between Narrow Diameter Implants and Standard Diameter Implants: An Updated Meta-analysis Dentistry Dentistry Meta-analysis Article Background: One of the key objectives is to update knowledge in order to develop treatment and care recommendations based on research findings. The purpose of the present meta-analysis was to compare the survival rate of narrow dental implants (NDI) with standard dental implants (SDI).    Methods: The international databases targeted for conducting a broad search included PubMed (Medline), Scopus, Web of Sciences, and Embase (Elsevier), which were searched to retrieve articles from January 1, 2000, to the end of July 2022. After the search, studies were screened based on the title, abstract, and full text, and finally, information extraction and quality assessment of the articles were performed based on the Newcastle-Ottawa Quality Assessment Scale checklist. All analyzes were conducted in STATA software Version 17.    Results: After the screening, 8 retrospective and prospective cohort studies remained in the research for analysis. The outcomes demonstrated that the probability of healthy teeth in the 2 groups of NDI and SDI was not substantially different at least a year after implantation, and the risk ratio of tooth loss in the NDI group was comparable to that of the SDI group (RR, 1.00; 95% CI, 0.98, 1.02; I2: 28.37 %; P = 0.252). In addition, the survival rates in the 2 groups were also measured using meta-analysis and the results showed the survival rates in the 2 groups of NDI and SDI were almost equal. In the SDI group, the survival rate was equal to 94% (95% CI, 90%-98%), and in the NDI group, it was equal to 94% (95% CI, 92%- 98%).    Conclusion: Based on the results of the present meta-analysis, the survival rates in the both NDI and SDI groups were almost equal.   Survival Rate, Narrow Diameter Implants, Standard Diameter Implants, Meta-Analysis 29 39 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1741-25&slc_lang=en&sid=1 Kimia Ganji kimiganji640@gmail.com 200319475328460075969 200319475328460075969 No Department of Prosthodontics, Faculty of Dentistry, Kurdistan University of Medical Sciences, Kurdistan, Iran Masomeh Rostamzadeh maosmehrostamzadeh460@gmail.com 200319475328460075970 200319475328460075970 No Department of Prosthodontics, Faculty of Dentistry, Kurdistan University of Medical Sciences, Kurdistan, Iran Ideh Talimkhani ideatalimkhan@yahoo.com 200319475328460075971 200319475328460075971 No 1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Besat Hospital, Hmedan University of Medical Sciences, Hamedan, Iran Yousef Moradi Yousef.Moradi@muk.ac.ir 200319475328460075972 200319475328460075972 Yes Social Determinants of Health Research Center, Research Institute for Health Development, & Department of Epidemiology and Biostatistics, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran