Clinical Investigation on Zirconia-ceramic Three-unit Bridges With CAD-on Veneering

Ivoclar Vivadent

Status: Completed

Conditions: Three-unit Posterior Bridges

Treatments: Device: CAD/CAM Veneering; Device: Manually layered veneering

Study type: Interventional

Funder types: Industry

Identifiers

NCT02175329

CAD-On

Details and patient eligibility

About

60 bridge frameworks are CAD/CAM manufactured from zirconia-ceramic; 30 bridges are veneered with CAD/CAM fabricated lithium disilicate ceramic, 30 bridges are manually layered. The goal is to compare clinical survival , biological or technical behaviour of the restorations.

Full description

Randomized prospective controlled clinical study with three-unit posterior bridges made of zirconia-ceramic to compare veneering with manually layering or CAD/CAM fabricated lithium disilicate ceramic veneers. The hypothesis is that there is no difference in clinical survival of the restorations and no difference in biological or technical behaviour.

Enrollment: 60 patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• single missing posterior tooth with two adjacent posterior teeth
• no acute conservative or paradontal treatment need except for the teeth to be treated in the study
• sufficient oral hygiene

Exclusion criteria

• known allergies to components
• bruxism
• missing antagonist tooth
• pregnancy or lactation
• missing written consent
• patients which are not expected to be compliant
• severe systemic diseases
• untreated carious lesions
• untreated parodontitis

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

---

60 participants in 2 patient groups

CAD/CAM veneering

Experimental group

Description:

CAD/CAM manufactured e.max CAD veneers on zirconia framework

Treatment:

Device: CAD/CAM Veneering

manually layered

Active Comparator group

Description:

Manually layered veneering on CAD/CAM fabricated zirconia bridge framework

Treatment:

Device: Manually layered veneering