Investigation of the Effect of Deep Margin Elevation Technique on the Clinical Performance of Endocrown Restorations Produced by Computer-Aided Design and Computer-Aided Manufacturing (CAD/CAM) System

Dental Caries Clinical Trial

Official title:

Investigation of the Effect of Deep Margin Elevation Technique on the Clinical Performance of Endocrown Restorations Produced by Computer-Aided Design and Computer-Aided Manufacturing (CAD/CAM) System

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT06222918
• Other study ID #: KA-22110
• Status: Active, not recruiting
• Phase: N/A
• Start date: December 25, 2022
• Est. completion date: April 25, 2024

Study information

• Verified date: January 2024
• Source: Hacettepe University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The aim of this clinical study is to investigate the impact of the deep margin elevation technique on the clinical performance of CAD/CAM endocrown restorations in deep Class II cavities.

Description:

This study aims to evaluate the impact of the deep margin elevation technique on the clinical performance of endocrown restorations made from nano-ceramic blocks produced using the CAD/CAM system for class II cavities with deep margins. Factors such as color harmony with adjacent teeth and restorations, discoloration, anatomical form continuity, adaptation, secondary caries, and retention will be examined in the nano-ceramic block material.

Various treatment options are available for the restoration of posterior group teeth. Factors such as restoration material, condition of supporting tooth tissue, patient habits, and clinical protocols affect the lifespan of restorations. Advances in tooth preparations ensure the preservation of sound tooth structure and the longevity of restorations.

The CAD/CAM system is a technology used in dentistry, consisting of three essential elements:

data acquisition, design, and production. With this system, dentists can design and produce restorations such as veneers, crowns, and bridges using digital modeling and manufacturing methods.

The restoration of endodontically treated teeth may require different approaches than post-core and crown restorations that can affect mechanical resistance. The development of adhesive techniques and the importance of minimally invasive dentistry have led to new therapeutic approaches, such as monolithic endocrown restorations fixed to the pulp chamber and cavity margins.

Dental adhesion is the attractive force between the tooth surface and the applied material, and dentin bonding systems have been developed to ensure adhesion between the two structures. These systems enhance adhesion by increasing dentin surface energy and facilitating the spread of adhesive resin into the dentin.

Procedures such as isolation, measurement, cementation, and residual cement cleaning can be challenging in cases with deep margins. Clinical strategies can assist in overcoming isolation difficulties in subgingival margin areas where adhesive procedures are applied.

The restoration of teeth with advanced substance loss can be a challenging process for operators, and the selection of the correct treatment plan is crucial. This clinical research aims to examine the impact of the deep marginal elevation technique on the clinical performance of CAD/CAM-produced endocrown restorations.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 100
• Est. completion date: April 25, 2024
• Est. primary completion date: June 25, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:

• Healthy individuals without any uncontrolled systemic diseases.

• Individuals aged between 18 and 65 years.

• Individuals who pay attention to oral hygiene by brushing their teeth twice a day.

• Patients with at least one canal-treated posterior tooth, multiple cusp loss, and at least one tooth wall loss identified during intraoral examination.

• Patients who have successfully completed periodontal and endodontic treatments and do not exhibit any subjective symptoms.

Voluntary individuals who agree to participate in the study and sign the informed consent form will be included in the research.

Exclusion Criteria:

• Individuals with uncontrolled systemic diseases.

• Individuals with mental retardation who cannot establish cooperation.

• Individuals with advanced periodontal disease.

• Individuals using removable partial dentures.

• Individuals with bruxism.

• Individuals with malocclusion.

• Patients with advanced substance loss requiring extraction of the relevant tooth, and individuals with deep margins requiring periodontal interventions.

Individuals who, after being informed about the study, choose not to read the informed consent form and decline to participate in the study.

Related Conditions & MeSH terms

• Dental Caries

Intervention

Procedure:
• Deep Margin Elevation (G-ænial Universal Injectable)
Deep margin elevation (DME), or coronal margin relocation (CMR), is a procedure used to raise or reposition sub-gingival margins into supra-gingival margins using several materials to increase marginal integrity and bonding strength

Locations

Country	Name	City	State
Turkey	Hacettepe University	Ankara

Sponsors (1)

Lead Sponsor	Collaborator
Hacettepe University

Country where clinical trial is conducted

Turkey, 

References & Publications (2)

Juloski J, Koken S, Ferrari M. Cervical margin relocation in indirect adhesive restorations: A literature review. J Prosthodont Res. 2018 Jul;62(3):273-280. doi: 10.1016/j.jpor.2017.09.005. Epub 2017 Nov 15. — View Citation

Veneziani M. Adhesive restorations in the posterior area with subgingival cervical margins: new classification and differentiated treatment approach. Eur J Esthet Dent. 2010 Spring;5(1):50-76. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Retention	Observers evaluated the restorations was performed using the United State Public Health Service criteria regarding retention rate. Retention rate was evaluated by 2 independent clinicians. Scores: Alfa: No loss of restorations materyal. Charlie: Any loss of restorative material	From baseline to 24 month
Primary	Marginal discoloration	Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding Marginal staining. Marginal staining was evaluated by 2 independent clinicians. Visual inspection with a mirror was performed. Scorsese: Alfa: No discoloration. Bravo: Discoloration without. Charlie:Discoloration with penetration in pulpal direction	From baseline to 24 month
Primary	Marginal Adaptation	Observers evaluated the restorations was performed using the modified United State Public Health Service criteria regarding marginal adaptation. Marginal adaptation was evaluated by 2 independent clinicians. Visual inspection with a mirror was performed. Scores; Alfa: Closely adapted, no visible crevice. Bravo: Visible crevice, explorer will penetrate. Charlie: Crevice in which dentin is exposed	From baseline to 24 month
Primary	Seconder Caries	Observers evaluated the restorations was performed using the United State Public Health Service criteria regarding retention rate. Retention rate was evaluated by 2 independent clinicians. Scores: Alfa: No caries presented. Charlie Caries present	From baseline to 24 month

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