Thermal Changes of One-Piece Versus Two-Piece Implants During Setting of an Autopolymerized Acrylic Resin.

IF 1.7 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Gil Slutzkey, Roni Kolerman, Evgeny Weinberg, Liat Chaushu, Omer Cohen
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Abstract

Purpose: To evaluate differences in the temperature rise at the cervical area of one-piece vs two-piece implants during the setting of relined provisional crowns. Materials and Methods: A K-type thermocouple was fixed to the coronal thread of 15 one-piece implants and 15 two-piece implants that were mounted on a plexiglass apparatus. Baseline temperature (Bl Temp) was recorded before starting the curing process. The maximum temperature (Max Temp) reached during the process in both implant groups was also recorded. Total heat flux (THF) was calculated as well as the thermal amplitude (Temp-Amp) at the implant surface. Finally, the differences between the implant types were compared using unpaired t test. Results: The increase in temperature from baseline was statistically significantly greater in the one-piece implants than in the two-piece implants (P < .01). Similarly, the THF and Temp-Amp were significantly greater in the one-piece implants compared to two-piece implants (P < .01). Conclusions: The polymerization of PMMA-based resin temporary crowns produces a significant temperature rise in both one-piece and two-piece implants. It is advisable to use two-piece implants to restore immediately loaded implants to reduce the risk to implant surroundings that may occur due to the temperature rise at the implant neck.

自聚合丙烯酸树脂固化过程中单片与两片植入物的热变化。
目的:评估在换衬临时牙冠的设置过程中,一体式和两件式种植体的颈部温度升高的差异。材料和方法:将K型热电偶固定在安装在有机玻璃装置上的15个一体式植入物和15个两件式植入物的冠螺纹上。在开始固化过程之前记录基线温度(Bl-Temp)。还记录了两个植入物组在该过程中达到的最高温度(Max Temp)。计算总热通量(THF)以及植入物表面的热振幅(Temp-Amp)。最后,使用非配对t检验比较植入物类型之间的差异。结果:在统计学上,一体式植入物的温度自基线的升高显著大于两件式植入物(P<0.01),与两件式种植体相比,一体式种植体的THF和Temp-Amp显著更高(P<0.01)。结论:PMMA基树脂临时冠的聚合在一体式和两件式植入体中都会产生显著的温度升高。建议使用两件式植入物来恢复立即加载的植入物,以降低因植入物颈部温度升高而对植入物周围环境造成的风险。
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来源期刊
CiteScore
3.30
自引率
5.00%
发文量
115
审稿时长
6 months
期刊介绍: Edited by Steven E. Eckert, DDS, MS ISSN (Print): 0882-2786 ISSN (Online): 1942-4434 This highly regarded, often-cited journal integrates clinical and scientific data to improve methods and results of oral and maxillofacial implant therapy. It presents pioneering research, technology, clinical applications, reviews of the literature, seminal studies, emerging technology, position papers, and consensus studies, as well as the many clinical and therapeutic innovations that ensue as a result of these efforts. The editorial board is composed of recognized opinion leaders in their respective areas of expertise and reflects the international reach of the journal. Under their leadership, JOMI maintains its strong scientific integrity while expanding its influence within the field of implant dentistry. JOMI’s popular regular feature "Thematic Abstract Review" presents a review of abstracts of recently published articles on a specific topical area of interest each issue.
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