Chotprasert Natdhanai, Shrestha Binit, Sipiyaruk Kawin
Maxillofacial Prosthetic Clinic, Department of Prosthodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Department of Orthodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.
Int J Biomater. 2022 Jun 13;2022:7744744. doi: 10.1155/2022/7744744. eCollection 2022.
Maxillofacial prostheses are used in rehabilitation of patients with facial defects. Typically, these prostheses are fabricated with medical grade silicone and are tinted corresponding to the patients' natural skin color. However, exposure to environment and disinfectants can result in color changes. This study aimed to evaluate the effects of four different disinfection methods on the color stability of precolored and hand-colored maxillofacial silicones. Forty specimens each of precolored and hand-colored silicone were prepared. The specimens were randomly divided into eight groups ( = 10) and cleansed with four different disinfection methods. Disinfection was carried out six times/day for 60 days, simulating once-a-day disinfection for a year. Color evaluation was carried out at day 0 and day 60 using a UV-vis spectrophotometer. Color alterations were calculated by the CIE system. Data were analyzed by two-way ANOVA with post hoc Tukey HSD and -tests ( = 0.05). Disinfectants can affect the color stability of maxillofacial silicone. In our study, chlorhexidine solution and liquid soap resulted in the highest color change. Precolored silicone showed higher color stability than its hand-colored counterpart.
颌面修复体用于面部缺陷患者的康复治疗。通常，这些修复体由医用级硅胶制成，并根据患者的自然肤色进行着色。然而，暴露于环境和消毒剂中会导致颜色变化。本研究旨在评估四种不同消毒方法对预着色和手工着色颌面硅胶颜色稳定性的影响。制备了预着色和手工着色硅胶各40个样本。将样本随机分为八组（每组n = 10），并用四种不同的消毒方法进行清洁。每天消毒6次，持续60天，模拟一年每天一次的消毒。在第0天和第60天使用紫外可见分光光度计进行颜色评估。颜色变化通过CIE系统计算。数据采用双向方差分析，并进行事后Tukey HSD检验和t检验（α = 0.05）。消毒剂会影响颌面硅胶的颜色稳定性。在我们的研究中，洗必泰溶液和液体肥皂导致的颜色变化最大。预着色硅胶比手工着色硅胶表现出更高的颜色稳定性。
