Mańka-Malara Katarzyna, Trzaskowski Maciej, Gawlak Dominika
Department of Prosthodontics, Medical University of Warsaw, 02-097 Warsaw, Poland.
Polymers (Basel). 2021 Dec 11;13(24):4340. doi: 10.3390/polym13244340.
Polymeric liners are materials commonly used in prosthodontics to reshape denture surfaces contacting the soft tissues of the oral cavity. The aim of the study was to determine the impact of different cleaning methods on two polymeric materials used in prosthodontics as non-adhesive permanent liners. The material for the research consisted of samples made from Mollosil Plus (Detax, Ettlingen, Germany)-direct polysiloxan liner; and Plastitanium (Pressing Dental, San Marino, Republic of San Marino)-an injection-molded liner. A total of 198 samples were made, 99 of each assessed material. They were exposed to different cleaning methods-a toothbrush, a toothbrush and soap, a toothbrush and toothpaste (BlendaMed, Procter&Gamble, Cincinnati, OH, USA), a toothpaste and denture cleaning paste (Protefix Hygiene Denture Paste, Queisser Pharma, Germany), denture cleansing tablets (Protefix Hygiene Cleaning Tablets, Queisse Pharma, Germany), and a disinfecting spray (Aftermat, Port Jefferson Station, New York City, NY, USA)-for 1 min, 5 min, 10 min, and 15 min. The image acquisition was performed with scanning electron microscopy and samples were analyzed for the homogeneity of their surfaces-the presence of holes, grooves, precipitate, and small and large separating pieces of the material marking departures from this homogeneity. For each type of damage, one point was given. Continuous data from two groups were compared with Mann-Whitney U testing. Due to a small sample size and distribution of variables other than normal, to compare more than two groups, Kruskal-Wallis testing with post hoc analysis (Dunn test with Bonferroni correction) was used. Categorical data were compared with the chi-square test and the Fisher's exact test. The Mollosil Plus material should be decontaminated with the use of a toothbrush or toothbrush with soap, while Plastitanium material should be disinfected. Plastitanium samples are more susceptible to damage during the decontamination procedures than Mollosil Plus.
聚合衬垫是口腔修复学中常用的材料，用于重塑假牙与口腔软组织接触的表面。本研究的目的是确定不同清洁方法对口腔修复学中用作非粘性永久衬垫的两种聚合材料的影响。研究材料包括由Mollosil Plus（德国埃特林根的Detax公司）制成的样品——直接聚硅氧烷衬垫；以及Plastitanium（圣马力诺共和国圣马力诺的Pressing Dental公司）——一种注塑衬垫。共制作了198个样品，每种评估材料各99个。它们分别采用不同的清洁方法——牙刷、牙刷加肥皂、牙刷加牙膏（美国俄亥俄州辛辛那提宝洁公司的BlendaMed牙膏）、牙膏加假牙清洁膏（德国奎泽制药公司的Protefix Hygiene Denture Paste）、假牙清洁片（德国奎泽制药公司的Protefix Hygiene Cleaning Tablets）以及消毒喷雾（美国纽约市杰斐逊港站的Aftermat）——分别处理1分钟、5分钟、10分钟和15分钟。使用扫描电子显微镜进行图像采集，并对样品表面的均匀性进行分析——观察是否存在孔洞、凹槽、沉淀物以及表明材料偏离这种均匀性的大小分离碎片。对于每种损伤类型，给予1分。两组的连续数据采用曼-惠特尼U检验进行比较。由于样本量小且变量分布非正态，为比较两组以上的数据，采用了带有事后分析（经邦费罗尼校正的邓恩检验）的克鲁斯卡尔-沃利斯检验。分类数据采用卡方检验和费舍尔精确检验进行比较。Mollosil Plus材料应使用牙刷或加肥皂的牙刷进行去污处理，而Plastitanium材料应进行消毒。在去污过程中，Plastitanium样品比Mollosil Plus更容易受到损伤。
