Clinical Evaluation of Lava Digital Veneer System (DVS) Crowns

Clinical Evaluation of Lava Digital Veneer System (DVS) Crowns

Study aim is to compare Lava Computer Aided Design / Computer Aided Milling Computer Aided Machining (CAD/CAM)crowns that are veneered (covered) with porcelain that has been milled using CAD/CAM, with similar CAD/CAM Lava crowns that have been veneered with a hand fabricated porcelain covering.

Veneers will be randomly allocated to study crowns. Study crowns will be evaluated over three years. The test porcelain veneer is CAD/CAM milled as a veneer shell that is then fused to the CAD/CAM milled Lava crown to make the final crown to be cemented in the patient's mouth. This may be a more predictable technique in the fabrication of Lava crowns than current conventional methods.

Inclusion Criteria:

• Over 18 years of age.
• Have at least one decayed back tooth in need of a crown
• Study tooth to be an upper or lower premolar or molar tooth/ teeth
• Study tooth to be vital and asymptomatic at start of study

Exclusion Criteria:

• Teeth which are non vital, have had root canal treatment
• Teeth which are pulp capped
• Sensitive teeth
• Significant untreated dental disease including periodontitis and rampant decay
• Pregnant or lactating women
• Patients with allergies to any of the materials to be used in the study
• Unable to attend the recall appointments