An in-vitro evaluation of mechanical and esthetic properties of orthodontic sealants

• Published in: European journal of dentistry Vol. 8; no. 4; pp. 487 - 492
• Main Authors: Premaraj, Thyagaseely Sheela, Rohani, Nima, Covey, David, Premaraj, Sundaralingam, Hua, Yi, Watanabe, Hidehiko
• Format: Journal Article
• Language: English
• Published: A-12, Second Floor, Sector -2, NOIDA -201301, India Thieme Medical and Scientific Publishers Private Ltd 01.10.2014; Medknow Publications and Media Pvt. Ltd; Medknow Publications & Media Pvt Ltd
• Subjects: Evaluation; Original; Original Article; Orthodontic appliances; Sealing compounds; Strains and stresses; Stress relaxation (Materials); Stress relieving (Materials); Testing; Esthetics; orthodontic sealants; white spot lesions; micro hardness; wear properties
• ISSN: 1305-7456; 1305-7464
• DOI: 10.4103/1305-7456.143630

ABSTRACT Objective: To evaluate mechanical and esthetic Properties of two commercially available orthodontic sealants: Opal ® Seal (OS) and L.E.D. Pro Seal (PS). Materials and Methods: Discs of each sealant were prepared to test the following properties: Micro hardness, wear resistance and color stability. Samples were randomly selected after the wear test for SEM imaging to analyze surface morphology. Results: OS was significantly harder than PS ( P < 0.001). PS was significantly more wear resistant than OS ( P < 0.05). PS showed a greater ΔE*ab (increased staining) when placed in wine or coffee showing a significant difference ( P < 0.05). SEM showed particle size, shape and distribution were different for PS and OS reflecting the pattern seen on wear surfaces. Conclusion: Both orthodontic sealants are beneficial for protecting enamel. However with better wear properties PS was superior in resisting mechanical stresses. OS was more color stable.