Same-day (CEREC) vs lab-made

A conventional crown usually takes two visits. At the first visit, the tooth is reshaped, an impression is sent to the laboratory, and a temporary crown protects the tooth until the next stage.

A chairside CAD/CAM crown is made through a digital workflow rather than the conventional laboratory sequence. Comparative work has examined chairside and laboratory CAD/CAM crowns for morphology, bite, and appearance.

The conventional route includes an impression, laboratory preparation, and a temporary crown during the first visit. A chairside CAD/CAM route changes the fabrication method, while both are crown treatments.

Lithium disilicate full-coverage crowns have been studied for recurrent caries, pulpal involvement, postoperative sensitivity, and periodontal changes. Most studies in the review reported none of those outcomes.

Microorganism infiltration, recurrent caries, pulpal lesions, periodontal inflammation, and cement exposure to the oral environment can lead to failure of lithium disilicate crown restorations over time.

Full-coverage crowns are one type of restoration. The reviewed lithium disilicate studies compared them with other full-coverage materials, including zirconia, full metal, and porcelain-fused options.

Separate the fabrication route from the crown material. The lab-made route is defined by impressions and laboratory work, whereas material studies track outcomes such as recurrent caries, sensitivity, and periodontal change.