PDF(Pubmed)
Abstract：
UNASSIGNED: Impressions that maintain their dimensional stability after autoclaving effectively control cross-infection and contamination resulting from a patient\'s oral secretions.
UNASSIGNED: The study aimed to assess the dimensional stability of autoclavable polyvinyl siloxanes after disinfection and sterilization.
UNASSIGNED: A stainless steel metal model containing three full veneer crown preparations was fabricated according to ANSI/ADA specification No. 19. Reference grooves were established on the occlusal and axial surfaces of the abutments for accurate measurements. Forty impressions were created from the master model using single-step impression technique monophase polyvinyl siloxane material (AFFINIS, Coltene/Whaledent, Altstatten, Switzerland). The impressions were categorized into four groups: Group A (control, ten untreated impressions), Group B (ten disinfected impressions with 5.25 % sodium hypochlorite [NaOCl]), Group C (ten disinfected impressions with 2 % glutaraldehyde), and Group D (ten autoclaved impressions at 134 °C for 18 min). Subsequently, stone casts were produced using type IV gypsum products (Gelstone R, BK Giulini Chemie, Ludwigshafen/Rh., Germany). The dimensional accuracy of the obtained casts was assessed by measuring the inter-abutment measurements (between the abutments) and the intra-abutment measurements (diameter and height of the abutments). These measurements were performed using a universal measuring microscope (Olympus stereomicroscope B061 Imaging Corp. Tokyo, Japan) with a precision of 0.001 mm. The dimensions of the stone casts from the study groups were then compared to those of the control group. Data analysis was performed using a one-way ANOVA with a significance level of α = 0.05.
UNASSIGNED: AFFINIS impressions subjected to chemical disinfection in 5.25 % NaOCl and 2 % glutaraldehyde with different immersion times showed slight expansion in the intra- and inter-abutment measurements. The impressions autoclaved at 134 °C for 18 min showed slight shrinkage in the intra- and inter-abutment measurements. The dimensional change was statistically non-significant, and the percent of dimensional changes within the experimental groups was within the clinically accepted limit (α < 0.5).
UNASSIGNED: AFFINIS polyvinyl siloxanes retain dimensional stability suitable for clinical use when subjected to chemical disinfection and steam autoclaving.
UNASSIGNED: The study aimed to assess the dimensional stability of autoclavable polyvinyl siloxanes after disinfection and sterilization.
UNASSIGNED: A stainless steel metal model containing three full veneer crown preparations was fabricated according to ANSI/ADA specification No. 19. Reference grooves were established on the occlusal and axial surfaces of the abutments for accurate measurements. Forty impressions were created from the master model using single-step impression technique monophase polyvinyl siloxane material (AFFINIS, Coltene/Whaledent, Altstatten, Switzerland). The impressions were categorized into four groups: Group A (control, ten untreated impressions), Group B (ten disinfected impressions with 5.25 % sodium hypochlorite [NaOCl]), Group C (ten disinfected impressions with 2 % glutaraldehyde), and Group D (ten autoclaved impressions at 134 °C for 18 min). Subsequently, stone casts were produced using type IV gypsum products (Gelstone R, BK Giulini Chemie, Ludwigshafen/Rh., Germany). The dimensional accuracy of the obtained casts was assessed by measuring the inter-abutment measurements (between the abutments) and the intra-abutment measurements (diameter and height of the abutments). These measurements were performed using a universal measuring microscope (Olympus stereomicroscope B061 Imaging Corp. Tokyo, Japan) with a precision of 0.001 mm. The dimensions of the stone casts from the study groups were then compared to those of the control group. Data analysis was performed using a one-way ANOVA with a significance level of α = 0.05.
UNASSIGNED: AFFINIS impressions subjected to chemical disinfection in 5.25 % NaOCl and 2 % glutaraldehyde with different immersion times showed slight expansion in the intra- and inter-abutment measurements. The impressions autoclaved at 134 °C for 18 min showed slight shrinkage in the intra- and inter-abutment measurements. The dimensional change was statistically non-significant, and the percent of dimensional changes within the experimental groups was within the clinically accepted limit (α < 0.5).
UNASSIGNED: AFFINIS polyvinyl siloxanes retain dimensional stability suitable for clinical use when subjected to chemical disinfection and steam autoclaving.
摘要：
■高压灭菌后保持其尺寸稳定性的印象可有效控制患者口腔分泌物引起的交叉感染和污染。
■该研究旨在评估可高压灭菌的聚乙烯基硅氧烷在消毒和灭菌后的尺寸稳定性。
■根据ANSI/ADA规格号制造了包含三个完整单板冠制剂的不锈钢金属模型。19.在基台的咬合面和轴向表面上建立了参考凹槽，以进行精确测量。使用单步印模技术单相聚乙烯基硅氧烷材料（AFFINIS，Coltene/Whaledent,Altstatten,瑞士)。印象分为四组：A组（对照组，十个未处理的印象)，B组（用5.25％次氯酸钠[NaOCl]消毒十种印模），C组（用2％戊二醛消毒10次），和D组(十次高压灭菌印模在134°C下18分钟)。随后，使用IV型石膏产品生产石材铸件(GelstoneR，BKGiuliniChemie,路德维希港/Rh.,德国)。通过测量基台间测量值（基台之间）和基台内测量值（基台的直径和高度）来评估获得的铸件的尺寸精度。这些测量是使用通用测量显微镜(奥林巴斯立体显微镜B061ImagingCorp.东京,日本），精度为0.001毫米。然后将研究组的结石模型的尺寸与对照组的尺寸进行比较。使用具有α=0.05的显著性水平的单向ANOVA进行数据分析。
■在5.25％NaOCl和2％戊二醛中进行化学消毒的AFFINIS印模在基牙内和基牙间测量中显示出轻微的膨胀。在134°C下高压灭菌18分钟的压痕在基牙内和基牙间测量中显示出轻微的收缩。尺寸变化在统计学上不显着，并且实验组内的尺寸变化百分比在临床可接受的限度内(α<0.5)。
■AFFINIS聚乙烯硅氧烷在经受化学消毒和蒸汽高压灭菌时保持适合临床使用的尺寸稳定性。
■该研究旨在评估可高压灭菌的聚乙烯基硅氧烷在消毒和灭菌后的尺寸稳定性。
■根据ANSI/ADA规格号制造了包含三个完整单板冠制剂的不锈钢金属模型。19.在基台的咬合面和轴向表面上建立了参考凹槽，以进行精确测量。使用单步印模技术单相聚乙烯基硅氧烷材料（AFFINIS，Coltene/Whaledent,Altstatten,瑞士)。印象分为四组：A组（对照组，十个未处理的印象)，B组（用5.25％次氯酸钠[NaOCl]消毒十种印模），C组（用2％戊二醛消毒10次），和D组(十次高压灭菌印模在134°C下18分钟)。随后，使用IV型石膏产品生产石材铸件(GelstoneR，BKGiuliniChemie,路德维希港/Rh.,德国)。通过测量基台间测量值（基台之间）和基台内测量值（基台的直径和高度）来评估获得的铸件的尺寸精度。这些测量是使用通用测量显微镜(奥林巴斯立体显微镜B061ImagingCorp.东京,日本），精度为0.001毫米。然后将研究组的结石模型的尺寸与对照组的尺寸进行比较。使用具有α=0.05的显著性水平的单向ANOVA进行数据分析。
■在5.25％NaOCl和2％戊二醛中进行化学消毒的AFFINIS印模在基牙内和基牙间测量中显示出轻微的膨胀。在134°C下高压灭菌18分钟的压痕在基牙内和基牙间测量中显示出轻微的收缩。尺寸变化在统计学上不显着，并且实验组内的尺寸变化百分比在临床可接受的限度内(α<0.5)。
■AFFINIS聚乙烯硅氧烷在经受化学消毒和蒸汽高压灭菌时保持适合临床使用的尺寸稳定性。
