Clinical Evaluation on the Longevity of Glass Ceramic Based Single Tooth Restorations

Retrospective Clinical Study to Investigate the Longevity of Long-term Single Tooth Restorations From IPS e.Max CAD and Press

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06898411

Enrollment

Registered

2025-03-27

Start date

2025-05-23

Completion date

2026-01-22

Last updated

2026-06-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Longevity, Single Tooth Restoration

Keywords

crown, inlay, onlay, glass ceramic, veneer

Brief summary

This retrospective study investigates the longevity of lithium disilicate based glass-ceramic single tooth restorations placed with IPS e.max CAD and IPS e.max Press after a wearing period of more than 15 years. The primary objective is to assess the survival rate of single tooth restorations with IPS e.max CAD and IPS e.max Press after a wearing period of at least 15 years. The secondary objectives are to assess the quality of the single tooth restorations in regard of aesthetic, functional and biological properties.

Interventions

DEVICESingle tooth restoration with IPS e.max

Examination of single tooth restorations with IPS e.max after a wearing time of more than 15 years. Intraoral situation will be examined similar to a standard dental examination while single tooth restorations will be documneted by photos.

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Age: \> 18 years * Informed consent signed and understood by the subject * Received indirect single tooth restoration (inlay, onlay, veneer or crown) within the internal clinic of Ivoclar Vivadent AG between 2006 and 2010 * Single tooth restoration was done with IPS e.max CAD or IPS e.max Press * Able to visit the internal clinic of Ivoclar Vivadent AG in Schaan, FL.

Exclusion criteria

* Health status (physical and mental) does not allow participation

Design outcomes

Primary

Measure	Time frame	Description
Survival Rate of single tooth restorations	15 years	Study population recieved single tooth restorations with IPS e.max between 2006-2010. After a wearing time of more than 15 years IPS e.max single tooth restorations were examined by a dentist resulting in survival rates of IPS e.max single tooth restorations after 15 years.

Countries

Liechtenstein

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 10, 2026