Surface roughness average and scanning electron microscopic observations of resin luting agents

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Restorative Dentistry

Background:

• Resin cements are widely used in dental restorations.
• Surface properties of dental materials are critical for longevity and oral hygiene.
• Tooth brushing is a common source of surface abrasion for dental restorations.

Purpose of the Study:

• To evaluate surface roughness changes in three resin cements after simulated tooth brushing.
• To correlate surface roughness alterations with scanning electron microscopic observations.
• To assess the impact of simulated wear on the surface integrity of resin cements.

Main Methods:

• Three resin cements (Enforce Sure Cure, Rely X, Variolink II) were tested.
• Specimens underwent simulated tooth brushing abrasion (100,000 strokes).
• Surface roughness (Ra) was measured before and after brushing.
• Scanning electron microscopy (Zeiss DSM 900) was used for surface observation post-coating.

Main Results:

• Statistically significant increases in surface roughness (Ra) were observed after brushing.
• Microscopic analysis revealed roughened surfaces post-abrasion for all tested cements.
• All evaluated resin cements exhibited increased surface roughness following simulated tooth brushing.

Conclusions:

• Simulated tooth brushing leads to increased surface roughness of resin cements.
• Surface roughening is consistent across the evaluated resin cement materials.
• Understanding these changes is crucial for predicting the clinical performance and durability of resin cements.