RGO: Revista Gaúcha de Odontologia (Jan 2008)

DLC screw preload. Loosening prevention

  • Ivete Aparecida de Mattias Sartori,
  • Ana Cláudia Moreira Melo,
  • Geninho Thomé,
  • Alexsander Luiz Golin,
  • Edgar Rodolfo Schwonbach,
  • Ana Flávia Sanches Borges

Journal volume & issue
Vol. 56, no. 1
pp. 93 – 96


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The screw loosening is a reason to prosthetic rehabilitation failure. However, the DLC (Diamond-like carbon) screw treatment lead thefriction decrease and sliding between the components, which increases the screw preload benefit and decreases the chance of looseningoccurrence. This case shows a clinical indication of the association of the correct preload applied and the DLC screw, which can be considered an optimized protocol to solve screw loosening recidivate of unitary prosthesis in anterior maxillary site.