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

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.

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Key information

Conditions

Single Tooth Restoration Longevity

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Ivoclar Vivadent AG

Schaan, 9494, Liechtenstein

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Single tooth restoration with IPS e.max

Device

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.

Primary outcomes

Survival Rate of single tooth restorations

Time frame: 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.

Sponsors and collaborators

Lead sponsor

Ivoclar Vivadent AG

Industry

Registry information

Official study title

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

Important dates

Study start: 2025
Primary completion: 2026
Study completion: 2026
First posted: Mar 27, 2025
Registry last updated: Jun 9, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed