Clinical Research Directory

Clinical Evaluation of Wear Resistance and Bioactivity of Self Cured Bioactive Resin Composite

Introduction: Resin-based composites (RBCs) have become the gold standard in restorative dentistry due to their superior aesthetics, adhesion, and minimally invasive application. However, wear remains a critical drawback, compromising their longevity and clinical performance. Various techniques have been suggested to measure the clinical performance of (RBCs). Recent advancements in digital dentistry, such as intraoral scanning, offer a more precise and efficient approach for quantitative wear assessment. Aim: This study aims to evaluate wear resistance and bioactivity of self cured bioactive resin composite vs nanhybrid resin composite. Methodology: Twelve healthy patients with 24 carious molar teeth will be selected where each patient should have two oclusso- mesial cavities. Standardized oclusso- mesial cavities will be prepared for all the selected teeth, for each patient the first tooth will be restored with conventional nanohybrid RBC (M1). Meanwhile, the second tooth will be restored by self-cure bioactive RBC (M2). Then, wear resistance will be evaluated by intraoral scanner immediately after restoration (T0), six months later (T1), after 12 months (T2), 18 months (T3) and 24 months (T4). Software analysis will be done by superimposing the 3D digital impression and evaluate the restoration wear by calculating the 3D volume loss. Also, bioactivity of the restoration will be measured by measuring the mineral density beneath the restoration. Digital radiographic images will be taken for the restoration by parallel technique and grey scale of the pixels under restoration will be measured by software immediately after restoration (D0), one month later (D1) and after 3 months (D2).

Comparison of Bulk-Fill Composite Resins in Class II Restorations

The goal of this clinical trial is to evaluate the clinical performance of Class II restorations of a thermoviscous nanohybrid materials , of a bulk-fill composite resin, and of conventional nanohyribrid bulk-fill composite resins . Class II restorations will be performed in patients using three different restorative materials.And restorations will be evaluated using modified US Public Health Service criteria Resorations will be photograped and restorations will be evaluated for 6,12 months.

Radiographic Evaluation of Adaptation of Universal Adhesives

Class 2 restorations are analyzed to see whether or not the use of modified universal adhesive will result in similar adaptation to conventional universal adhesive.

Comparison of the Functional Properties of Two Injectable Materials in Posterior Teeth: Randomized Clinical Trial

Using two different injectable materials in class II cavities to compare functional properties

Class II Restorations With High-Filled Flowable Composites

In the study, Class II restorations will be performed with G-aenial Universal Injectable (GC/ Tokyo, Japan), Grandio Flow (VOCO/ Germany), and Clearfil Majesty Flow (Kuraray/ Japan) composites will evaluated. Restorations will be assessed according to modified USPHS criteria in 1st week, 6th months, and 12th months from the placement date. The Chi-square test will used for statistical analysis of the difference between the groups, and the Cochran Q test will used for the significance of the difference between time-dependent changes within each group (p\<0.05).