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Lava crowns and bridges

3M ESPE Lava Crowns and Bridges are based on translucent, shaded zirconia copings or frameworks. The result is beautifully vital esthetics that exceed PFMs. The excellent marginal adaption of Lava crowns and bridges is equal to that of PFMs. Lava's PFM-like chamfer margins and conventional cementation require no changes to your favorite clinical procedures.

Indications

Lava is indicated for single-unit crowns, 6-unit bridges with a maximum span length of 42 mm with two pontic spans between abutments consecutively, and implant copings. Cantilever bridges with one pontic can be fabricated if the bridge has a double abutment.

Benefits for the Patient

  • Medical grade zirconia is completely biocompatible and the 8 choices of coloring for the substructure allows for beautiful esthetics.
  • Strength of the Lava zirconia is equivalent to metal.
  • 3M/ESPE is the manufacturer of Lava and is a trusted leader in dental materials.

Prep Requirements

  • Anterior full-coverage crowns require a chamfer with 1.5-2.0 mm facial reduction, 1.0-1.5 mm lingual contact clearance, 1.5-2.0 mm incisal reduction, 1.0-1.5 mm reduction at the gingival margin with rounded internal line angles; or a shoulder with 1.0 mm lingual reduction, 2.0 mm incisal reduction, 1.5 mm labial reduction, 1.0 mm 360 degree rounded shoulder.
  • Posterior full-coverage crowns require a chamfer margin with 1.5-2.0 mm occlusal reduction, 1.5 mm buccal and lingual reduction with rounded internal line angles; or a shoulder with 1.5-2.0 mm occlusal reduction, 1.5 mm buccal and lingual reduction, and 1.0-1.5 mm gingival margin reduction with rounded internal line angles.
  • Chamfer Margins — Correct preparation of the chamfer margins interproximally allows the appropriate bulk of porcelain. In addition, Lava has a digital wax-up to bulk up the zirconia substructure when extra support for the ceramic is needed.

Recommended Cementation

  • Resin-reinforced glass ionomers, glass ionomers, resin cements and self-adhesive resin cements.

ADA Codes

  • D2740 Crown - Porcelain/Ceramic Substrate
  • D6245 Pontic - Porcelain/Ceramic
  • D6740 Abutment Crown - Porcelain/Ceramic

Lava is a trademark of 3M, 3M ESPE, or 3M ESPE AG. Used under license in Canada. Streaming video courtesy of Glidewell Laboratories.

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