Clinical Evaluation of 3D-Printed Versus Semi-Direct Composite Resin Restorations
Studieöversikt
Status
Intervention / Behandling
Detaljerad beskrivning
Dental restorations are commonly used to restore teeth affected by caries or structural defects. Advances in digital dentistry have introduced three-dimensional (3D) printing technologies that enable the fabrication of indirect composite resin restorations with improved precision, efficiency, and reproducibility. Semi-direct composite resin restorations represent another conservative restorative approach that combines the advantages of direct and indirect techniques while reducing polymerization shrinkage and improving anatomical form.
Although both techniques are increasingly used in clinical practice, evidence regarding their long-term clinical performance remains limited. Therefore, this randomized controlled clinical trial aims to compare the clinical performance of 3D-printed composite resin restorations and semi-direct composite resin restorations in posterior teeth requiring Class II inlay or onlay restorations.
Sixty patients aged 25 to 40 years who require two Class II inlay or onlay restorations will be enrolled by invitation from patients attending the Faculty of Dentistry, Tanta University. Participants will be randomly allocated into two groups according to the restorative material and fabrication technique used. Group I will receive 3D-printed composite resin restorations, while Group II will receive semi-direct composite resin restorations.
All cavity preparations and restorative procedures will be performed according to standardized clinical protocols and manufacturers' instructions. Clinical evaluations will be conducted at baseline, 6 months, 9 months, and 12 months after restoration placement using the modified FDI World Dental Federation criteria.
The primary objective is to evaluate the overall clinical performance and survival of the restorations over a 12-month follow-up period. Secondary outcomes include assessment of retention, marginal integrity, surface roughness, anatomical form, postoperative sensitivity, and the occurrence of secondary caries.
The findings of this study will contribute to the evidence regarding the effectiveness and clinical reliability of 3D-printed composite resin restorations compared with semi-direct composite resin restorations and may support clinical decision-making in restorative dentistry.
Studietyp
Inskrivning (Beräknad)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
Tanta
-
Tanta, Tanta, Egypten, 31527
- Restorative Department, Faculty of Dentistry, Tanta University
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
Tar emot friska volontärer
Beskrivning
Inclusion Criteria:
- Patients aged 25-40 years.
- Patients requiring two Class II inlay or onlay restorations.
- Teeth with carious lesions or defective restorations requiring indirect restorative treatment.
- Teeth with sufficient structure to receive an inlay/onlay restoration.
Exclusion Criteria:
- Patients with systemic diseases or medical conditions that may affect oral health or healing.
- Pregnant or lactating patients.
- Patients with poor oral hygiene or uncontrolled periodontal disease.
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Behandling
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Dubbel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: 3D-Printed Composite Resin Restorations
Participants will receive Class II inlay or onlay restorations fabricated using 3D-printed composite resin.
Restorations will be placed following standardized cavity preparation and manufacturer instructions.
Clinical performance will be evaluated at baseline, 6, 9, and 12 months using modified FDI criteria
|
Fabrication and placement of Class II inlay or onlay restorations using 3D-printed composite resin material.
|
|
Experimentell: Semi-Direct Composite Resin Restorations
Participants will receive Class II inlay or onlay restorations fabricated using the semi-direct composite resin technique.
Restorations will be placed following standardized cavity preparation and manufacturer instructions.
Clinical performance will be evaluated at baseline, 6, 9, and 12 months using modified FDI criteria
|
Fabrication and placement of Class II inlay or onlay restorations using the semi-direct composite resin technique
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Fracture of restorations
Tidsram: 12 months
|
Clinical evaluation of restoration fracture or bulk failure after placement of 3D-printed composite resin and semi-direct composite resin restorations.
at baseline, 6 months, 9 months, and 12 months after restoration placement.
using a modified FDI criteria score.
All restorations will be evaluated and categorized based on their clinical performance according to the assigned criteria: score 1 indicates a clinically excellent restoration, scores 2 and 3 represent clinically acceptable restorations, while scores 4 and 5 are considered clinically unacceptable.
Clinical success will be defined as restorations receiving scores of 1, 2, or 3, whereas scores of 4 or 5 will be considered clinical failures.
|
12 months
|
Samarbetspartners och utredare
Sponsor
Publikationer och användbara länkar
Allmänna publikationer
- Nguyen-Thi TL, Tran TM, Tran-Thi HP, Nguyen-Ho PM, Do TT, Dang MH. Effect of preparation design on the fracture behavior of 3D-printed restorations in an in-vitro tooth wear model. BMC Oral Health. 2026 Mar 12;26(1):704. doi: 10.1186/s12903-026-08031-0.
- Tribst JPM, Veerman A, Pereira GKR, Kleverlaan CJ, Dal Piva AMO. Comparative Strength Study of Indirect Permanent Restorations: 3D-Printed, Milled, and Conventional Dental Composites. Clin Pract. 2024 Sep 20;14(5):1940-1952. doi: 10.3390/clinpract14050154.
- Kaffaf MB, Sesen P, Tokac SO. Comparison of the intaglio surface accuracy of occlusal veneers fabricated using two different techniques to restore severe occlusal tooth wear: An in vitro study. J Prosthet Dent. 2026 Jun;135(6):e97-e105. doi: 10.1016/j.prosdent.2025.12.027. Epub 2026 Jan 6.
- Peskersoy C, Acar G. In Vitro Evaluation of the Mechanical Properties of Posterior Adhesive Restorations Fabricated Using Three Different Techniques. Polymers (Basel). 2025 May 14;17(10):1340. doi: 10.3390/polym17101340.
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
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Nyckelord
Andra studie-ID-nummer
- 3D-Printed Composite
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