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NCT Number: NCT07508475

Clinical Assessment of CAD/CAM Fabricated Lithium-Disilicate Overlay Versus Lithium-disilicate Endocrowns for Restoration of Endodontically Treated Teeth.

A Randomized Controlled Clinical Study aims for Clinical Assessment of CAD/CAM Fabricated Lithium-Disilicate overlay in comparison to Lithium-disilicate Endocrowns for Restoration of Endodontically Treated Teeth.

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Key information

Conditions

Nonvital Tooth Dental Pulp Diseases Stomatognathic Diseases Tooth Diseases Tooth, Nonvital

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Faculty of Dentistry Cairo University

Cairo, Cairo Governorate, 12567, Egypt

About this study

Investigators are going to compare the clinical behavior of the lithium disilicate overlay as a more conservative line of treatment for endodontic treated teeth. overlays will be compared to the lithium disilicate endocrowns .primary outcome will be marginal adaptation ,secondary outcomes will be survival and patient satisfaction . Baseline, 5, 10, 15, and 20 months follow up will extend to 20 months(Baseline, 5, 10, 15, and 20 months) .This is a randomized, controlled, parallel-group clinical trial with 1:1 allocation ratio.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Patients with endodontically treated teeth indicated to ceramic Endocrowns.
  • Patients with endodontically treated teeth indicated to ceramic overlays.
  • Physically and psychologically able to tolerate conventional restorative procedures.
  • Have no active periodontal or periapical diseases.
  • Maintenance of good oral hygiene.
  • Willing to return for follow-up examinations and evaluation.

Exclusion criteria

  • Patients in the growth stage with partially erupted teeth.
  • Patients with para-functional habits.
  • Patients with defective endodontic treatment.
  • Patients with poor oral hygiene and motivation.
  • Psychiatric problems or unrealistic expectations.

Treatment and study plan

lithium disilicate overlays

Other

indirect partial coverage restoration that cover mainly the occlusal surface of posterior teeth

Other names: occlusal veneer ,ceramic partial coverage

Primary outcomes

  1. marginal adaptations

    Time frame: Baseline, 5 months, 10 months, 15 months, and 20 months

    Marginal adaptation will be evaluated using Modified United States Public Health Service (USPHS) criteria by two calibrated independent examiners. Scores will be recorded as Alpha, Bravo, or Charlie based on marginal integrity.

Secondary outcomes

  1. marginal discoloration

    Time frame: Baseline, 5, 10, 15, and 20 months

    change in margins colour as a result of leakage , Assessed using Modified USPHS criteria as Alpha, Bravo, or Charlie scores.

  2. patient satisfaction

    Time frame: 20 months

    patient acceptance to the treatment

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Collaborators

  • Ahram Canadian University

Registry information

Official study title

Clinical Assessment of CAD/CAM Fabricated Lithium-Disilicate Overlay Versus Lithium-disilicate Endocrowns for Restoration of Endodontically Treated Teeth. A Randomized Controlled Clinical Study

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Apr 2, 2026
Registry last updated
Apr 2, 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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