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Dental Materials Wear under Different PH

机译：不同PH下的牙科材料磨损

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This study was evaluated the wear resistance of 2 dentals materials in different pH medium. Wear of on dental resin (Super Lux) and on dental resin composite (VHL Hybrid) was measured with time. Wear tests were conducted using a conventional tribotesters. The wear device works like the pin-on-disk where a human tooth slides on the dental material sample. Two wear modes were considered: Dry and lubricated sliding. For the last mode, water (pH7), base (pH14) and acid (pH1.5) were used as lubricant. Wear depth (height loss) was measured using micrometric dial comparator. In general, the results show that the wear curves tend to a linear function and have similar trend and the wear quantity increases with time. Put aside the acid, the 2 other lubricants (bases and water) were minimized wear compared to the dry mode. The last mode gave a wear weaker than that of the acid and it for the used materials. In the other hand, the resin composite had the lower material loss than the dental resin and it for modes of wear considered.
机译：这项研究评估了两种牙科材料在不同pH介质中的耐磨性。随时间测量牙用树脂（Super Lux）和牙用树脂复合材料（VHL Hybrid）的磨损。磨损测试是使用传统的三生胎进行的。磨损装置的工作原理类似于针盘式，人齿在牙科材料样本上滑动。考虑了两种磨损模式：干式和润滑式滑动。对于最后一种模式，水（pH7），碱（pH14）和酸（pH1.5）被用作润滑剂。使用千分表比较器测量磨损深度（失重）。通常，结果表明磨损曲线趋于线性函数并具有相似的趋势，并且磨损量随时间增加。撇开酸，与干式相比，其他两种润滑剂（碱和水）的磨损最小。最后一种模式的磨损要弱于酸和旧材料的磨损。另一方面，考虑到磨损方式，树脂复合材料的材料损失低于牙科用树脂。

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