Csekő Kata, Maróti Péter, Helyes Zsuzsanna, Told Roland, Riegler Fanni, Szalma József, Gurdán Zsuzsanna
Department of Pharmacology and Pharmacotherapy, Medical School & Szentágothai Research Centre, University of Pécs, Ifjusag Str. 20, H-7624 Pecs, Hungary.
3D Printing and Visualization Centre, University of Pécs, Boszorkany Str. 2, H-7624 Pecs, Hungary.
Polymers (Basel). 2021 Dec 23;14(1):38. doi: 10.3390/polym14010038.
Force provided by elastomers used in orthodontics can be affected by several factors present in the oral cavity. The aim of our study was to investigate the role of mouthwashes, toothbrushing, and smoking in the force decay of such elastomers. Tensile strength, changes in the force continuously exerted, and force decay of elastic chains (Ortho Organizer and Masel Short Power Chain) and elastic ligatures (Dentaurum and Masel) by two separate manufacturers were measured. Measurements were initially made on untreated elastics, followed by exposure to different environmental factors including cigarette smoke, toothbrushing (mechanical plaque control), and two different mouthwashes (chemical plaque control). Changes on the surface of the elastics were studied with scanning electron microscopy (SEM). Untreated Masel elastic ligature showed lower tensile strength than Dentaurum elastic ligature (2339 cN vs. 3660 cN), while significantly higher tensile strength was measured for Ortho Organizer elastic chains than Masel chains (2639 cN vs. 1324 cN). The decrease in the elastic force of Masel ligature was greater in response to all external factors compared to Dentaurum. Although brushing with toothpaste and toothbrush impacted the force of both Masel and Ortho organizer ligatures negatively, force degradation was more apparent in the case of the Ortho organizer. Surface changes were more visible when applying Curasept mouthrinse, however force decay was higher in the Corsodyl group. Mechanical and chemical plaque control can influence the tensile strength and force decay of orthodontic elastomers, which should be considered by selecting the elastomers or determining their changing interval for the practice.
正畸中使用的弹性体所提供的力会受到口腔中多种因素的影响。我们研究的目的是调查漱口水、刷牙和吸烟在此类弹性体力衰减中的作用。测量了两个不同制造商生产的弹性链（Ortho Organizer和Masel Short Power Chain）以及弹性结扎丝（Dentaurum和Masel）的拉伸强度、持续施加力的变化以及力衰减情况。最初对未处理的弹性体进行测量，随后使其暴露于不同环境因素下，包括香烟烟雾、刷牙（机械性菌斑控制）以及两种不同的漱口水（化学性菌斑控制）。用扫描电子显微镜（SEM）研究弹性体表面的变化。未处理的Masel弹性结扎丝的拉伸强度低于Dentaurum弹性结扎丝（2339厘牛顿对3660厘牛顿），而Ortho Organizer弹性链的拉伸强度显著高于Masel链（2639厘牛顿对1324厘牛顿）。与Dentaurum相比，Masel结扎丝的弹力在所有外部因素作用下下降得更大。尽管用牙膏和牙刷刷牙对Masel和Ortho organizer结扎丝的力均有负面影响，但在Ortho organizer的情况下力的降解更明显。使用Curasept漱口水时表面变化更明显，然而在使用Corsodyl漱口水的组中力衰减更高。机械性和化学性菌斑控制会影响正畸弹性体的拉伸强度和力衰减，在选择弹性体或确定其临床更换间隔时应予以考虑。
