Abstract
Aim: To evaluate the surface roughness of three different types of light activated composite resin using (Sof-Lex) – polishing system, a profilometer study. Materials and Methods: A total of 30 resin com-posite disks were prepared from three different types of composite resin include 3 – groups. Group I: 10 specimens were prepared from light activated nano hybride (Tetric n – Ceram, Ivoclar – Vivadent – Liechtenstein). Group II: 10 specimens were prepared from light activated microhybride composite resin (Arabesk – Voco, Germany). Group III: 10 specimens were prepared from light activated poly-glas composite resin (Solitaire – 2, Heraeus, Kulzer, Germany). The resin blocks finished and polished using (Sof – Lex) polishing system. The specimens were analyzed for surface roughness using “Pro-filometer”. Results: Tetric n – Ceram composite resin showed the lowest roughness average (0.112 μm) followed by Arabesk composite (0.150 μm), Solitaire – 2 composite resin showed the highest roughness average (0.341 μm). Conclusions: Tetric n– Ceram (nano-hybride) was the best polished composite resin, showed the least roughness average.
Highlights
Composite is a heterogeneous material that is composed of three major components.(1)Since 1960 dental composite introduced in dentistry
As we mentioned a number of finishing and polishing devices are available (Sof – lex, Heraeus, Shofer, PoGo system).(3,5) Sof – lex is a better finishing – polishing system others its has become a standard frequently used in research trial because of a smooth surface commonly achieved without destroying the composite resin surface.(3,5) Thirty samples were polished with aluminum oxide abrasive disks in the kit were attached by a metal hub to the autoclavable metal mandrel as shown in Figure (2)
Profilometer provides a digital readout of the average surface roughness (Ra) in microns
Summary
Since 1960 dental composite introduced in dentistry They have undergone a lot of changes in order to become a restorative material with acceptable aesthetic properties.(2). Adequate finishing and polishing of resin composites is a prerequisite for high quality, esthetic and enhanced longevity of the resin – based restorations. Proper finishing and polishing for both anterior and posterior composite restoration are important step that enhance both esthetics and longevity of the restored teeth, surface roughness associated with improper finishing and polishing can result in excess surface staining, increased wear rates and plaque accumulation which compromised the clinical performance of the restoration.(6,7). The aim of this study to evaluate the surface roughness for three different types of light activated composite resin using (Sof-Lex) – polishing system.
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