Acid-etching and the fracture of rubber dam clamps

In vivo fracture of a new rubber-dam clamp

“…The first group is made from plain carbon martensitic steel with approximately 0.8 wt.% carbon and 600–650 Vickers hardness, electroplated with a nickel coating. The thickness of the coating is approximately 6.5 µm and is applied in order to enhance corrosion resistance (Jedynakiewicz et al . 1985).…”

“…Although the technique of applying these devices in the mouth is straightforward, the infrequent intraoral fracture of rubber‐dam clamps (Jedynakiewicz et al. 1985) is inconvenient to the dentist and patient and represents a potential hazard.…”

“…The first group is made from plain carbon martensitic steel with approximately 0.8 wt.% carbon and 600-650 Vickers hardness, electroplated with a nickel coating. The thickness of the coating is approximately 6.5 mm and is applied in order to enhance corrosion resistance (Jedynakiewicz et al 1985). The second group is made of martensitic stainless steel 7C27Mo (13.5 Cr, 1.0 Mo, 0.38 C, 0.55 Mn, and 0.40 Si all in wt.%) of 525 Vickers hardness (Sutton & Saunders 1996).…”

“…Although the technique of applying these devices in the mouth is straightforward, the infrequent intraoral fracture of rubber-dam clamps (Jedynakiewicz et al 1985) is inconvenient to the dentist and patient and represents a potential hazard. This study was conducted to investigate the reasons for failure of a new rubber-dam clamp which fractured intraorally during its first use in vivo.…”