Clinical Evaluation of Additive and Subtractive Onlay Restorations
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-84
SponsorAyse Tugba Erturk Avunduk
About this trial
The goal of this clinical trial is to learn whether onlay restorations produced by additive manufacturing \[three-dimensional (3D) printing\] and subtractive manufacturing \[Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) milling\] perform equally well in vital posterior teeth. The main questions it aims to answer are:
* Do 3D printed onlay restorations show similar marginal adaptation and clinical performance compared to CAD/CAM milled onlays? * Are there any differences in biological compatibility, surface properties, or postoperative sensitivity between the two techniques over time? Researchers will compare onlay restorations fabricated with 3D printing and CAD/CAM milling using a split-mouth study design.
Participants will:
* Receive one onlay restoration produced by 3D printing and another produced by CAD/CAM milling, placed on opposite sides of the mouth * Have checkups at baseline (1st week), 6 months, 12 months, and 18 months after treatment * Be evaluated using the Fédération Dentaire Internationale (FDI) criteria for marginal adaptation, surface quality, anatomical form, and biological compatibility
Eligibility criteria
Qualifiers
Adults aged 18-84 years
No active periodontal disease (probing depth ≤ 3 mm, no clinical attachment loss)
No parafunctional habits such as bruxism, clenching, or foreign object chewing
Willingness to attend regular follow-up visits during the study period
Disqualifiers
Teeth with pulp necrosis or a history of endodontic treatment (previous root canal therapy or non-vital teeth)
Teeth with excessive tissue loss requiring full crown coverage and unsuitable for onlay restoration
Teeth presenting with cracks, fractures, internal or external resorption, or structural defects compromising prognosis
Advanced periodontal disease, including clinical attachment loss, furcation involvement, mobility, or probing depth > 3 mm
Trial design
Treatments tested in this trial
- 3D Printed Onlay Restoration
- CAD/CAM Onlay Restoration
Treatment groups
29 Participants
are divided into 2 treatment groupsSponsors and collaborators
Ayse Tugba Erturk Avunduk
Lead sponsor
Mersin University
Sponsor institution
Mersin University
Collaborator
Source ClinicalTrials.gov