Retention and penetration of a conventional resin-based sealant and a photochromatic flowable composite resin placed on occlusal pits and fissures
| Autor: | Luciana Assirati Casemiro, F. G. Aguilar, M G C Watanabe, Fernanda de Carvalho Panzeri Pires-de-Souza, Brahim Drubi-Filho |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Pit and Fissure Sealants
retention Time Factors Materials science Surface Properties Flowable composite resin Polyurethanes pit-and-fissure sealants Dentistry Dental bonding Materials testing Dental Fissures Composite Resins Acid Etching Dental Materials Testing Image Processing Computer-Assisted Flowable Composite Humans Bicuspid Bisphenol A-Glycidyl Methacrylate Dental Enamel Saliva Tetric Flow General Dentistry Acetic Acid Fluorescent Dyes Acid etching Rhodamines business.industry Sealant Dental Bonding Temperature Saliva Artificial Microtomy Fluoroshield Penetration (firestop) lcsh:RK1-715 lcsh:Dentistry business |
| Zdroj: | Journal of Indian Society of Pedodontics and Preventive Dentistry, Vol 25, Iss 4, Pp 169-173 (2007) |
| ISSN: | 0970-4388 |
| Popis: | This study compares the retention and penetration of a conventional resin-based sealant (Fluroshield) and a photochromatic flowable composite resin (Tetric Flow Chroma) placed on occlusal pits and fissures and submitted to thermal or chemical cycling regimens. Penetration assessment - ten premolars were sealed with each material, isolated (except for the sealed surface) and immersed in 0.2% Rhodamine B. The teeth were serially sectioned in a mesiodistal direction. The images of the sections were digitized and analyzed (ImageLab). The distance between the most superficial and the deepest points on the occlusal central groove was calculated to determine the groove′s total depth. The length of the central groove filled with the sealant was divided by its total depth to obtain the percentage of sealing of the occlusal groove. Retention assessment - 30 premolars were sealed, their occlusal surfaces were photographed and the area occupied by the sealing materials was demarcated (ImageLab). The teeth were submitted to different treatments: thermocycled, stored in artificial saliva and immersed in acetic acid and saliva (10 cycles/day protocol for 30 days). New photographs were taken to assess the final area occupied by the materials. The difference between the final and initial area was calculated to obtain the material loss. The data was analyzed (two-way anova and Tukey′s test P < 0.05). Both materials presented similar penetration of the occlusal central groove. After thermal and chemical cycling, the materials did not differ with respect to retention, except for immersion in acetic acid. In this case, Tetric Flow Chroma presented greater retention than Fluoroshield. |
| Databáze: | OpenAIRE |
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