Lithium Disilicate Crowns Study

Ivoclar Vivadent

Status: Terminated

Conditions: Dental Trauma; Caries

Treatments: Device: Lithium disilicate crowns

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT05070416

LL3986001

HUM00191892 (Registry Identifier)

Details and patient eligibility

About

CAD-CAM crowns made of experimental lithium disilicate (shades A1, A2 and A3) are placed in patients by using either a dual-curing adhesive or a self-adhesive luting material in combination with total etch/universal bonding agent.

Enrollment: 8 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients will be at least 18 years of age, of either gender, and of any ethnic background.
• Each patient should have at least one carious lesion or defective restoration to be restored on a maxillary or mandibular premolar or molar tooth.
• Each lesion or defective restoration should exhibit sufficient size or loss of tooth structure requiring a full crown restoration.
• The tooth should have at least one opposing tooth in occlusion and one adjacent tooth with an intact proximal contact.
• All teeth will test vital and be asymptomatic at the beginning of treatment. No more than two restorations will be placed per patient.

Exclusion criteria

• Devital or sensitive teeth
• Teeth with prior endodontic treatment of any kind
• Teeth with a history of direct or indirect pulp capping procedures
• Patients with significant untreated dental disease to include periodontitis and/or rampant caries
• Women who self-report that they are possibly pregnant, pregnant, or lactating, as elective dental treatment is not indicated at these times
• Patients with a self-reported past history of allergies to the materials to be used in the study including composite resin cements or ceramic restorative materials
• Patients unable to return for the recall appointments

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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8 participants in 2 patient groups

Crowns self-adhesively cemented

Experimental group

Description:

Group 1 receives crowns with an occlusal thickness of 1.5 mm and luted with a self-adhesive, self-curing resin cement (SpeedCem Plus, Ivoclar Vivadent AG).

Treatment:

Device: Lithium disilicate crowns

Crowns adhesively luted

Experimental group

Description:

Group 2 receives crowns with an occlusal thickness of 1.2 mm delivered with a dual-curing resin cement (Variolink Esthetic (DC),Ivoclar Vivadent AG).

Treatment:

Device: Lithium disilicate crowns