Radiographic Assessment Of Class II Resin Composite Restorations

Objectives: Resin composite restorations are frequently replaced in the clinical practice as the placement technique is very sensitive. Replacement of such restorations is costly and could be associated with the removal of additional tooth structure. The proper handling and adaptation of resin composite are important keys to assure high-quality restorations. The objective of this study is to quantify the prevalence of defective Class II resin composite restorations.
Methods: Adult patients who were seen at predoctoral clinics at The University of Maryland School of Dentistry between August 2016 to July 2017 were included in the study. Bitewing radiographs of 471 teeth with class II resin composite were taken and assessed regarding the presence of radiolucencies within the restoration. Teeth with orthodontic brackets, Class V restorations, and tight proximal contact were excluded to prevent any misinterpretation due to overlap.
Results: Out of the 471 examined restorations, 286 (60.7%) resin composite restorations were found defective. The types of defects were distributed as the following: 53% as internal voids, 30% as overhang restorations, and 17% as voids in the external surface of the resin composite.
Conclusions: Improper resin composites placement can lead to serious complications such as recurrent caries or mechanical failure, which then can accelerate the failure of such restoration. Dental practitioners should be aware of the appropriate placement technique to achieve excellently placed restorations with high clinical longevity.