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Evaluation of CAD/CAM Onlays Fabricated by Subtractive Versus Additive Digital Manufacturing Techniques.

NCT05943782 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2026-04-06

No results posted yet for this study

Summary

Aim of the study: The aim of this RCT is to evaluate CAD/CAM onlays fabricated by subtractive technique (brilliant crios) versus additive technique (varseosmile crown plus material), in terms of clinical functional evaluation following the FDI criteria and three-dimensional digital evaluation of the marginal and internal fit by triple scan protocol.

Materials and methods: A total of 30 patients will be enrolled in the clinical trial following the eligibility criteria. Then, the patients will be randomly allocated to receive either 3D printed onlays or milled ones. A blinded operator will prepare a standardized cavity for the restoration and an impression will be performed. After designing the restoration on the Exocad software, A dentist not involved in the clinical part of the study will receive the STL file of the design and envelopes containing the information necessary only to manufacture the restorations (tooth numbers and restorative materials) to proceed with either the milling or printing procedures. Try in and cementation procedures will be similarly performed for both groups by a blinded operator. Finally, the marginal and internal fit will be evaluated by using the triple scan protocol for digital 3D assessment.

Also, a baseline, six months and 12 months assessments will be performed by a blinded examiner, not involved in the clinical part for assessing the functional clinical performance of the re3stprations using the FDI criteria. Finally, the data will be statistically analyzed.

Conditions

  • Caries,Dental
  • Broken Teeth
  • Fracture Tooth
  • Defective Dentition

Interventions

PROCEDURE

onlay manufactured by milling

indirect restorations for treating mutilated molars manufactured by CAD/CAM subtractive technique

PROCEDURE

Onlay manufactured by 3D printing

indirect restorations for treating mutilated molars manufactured by CAD/CAM additive technique

Sponsors & Collaborators

  • Ain Shams University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-09-10
Primary Completion
2026-12-01
Completion
2026-12-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05943782 on ClinicalTrials.gov