Clinical Evaluation of Extensive Direct Composite Restorations With Polyethylene Fiber
Condition: Dental Caries Extending Into Dentin
MeSH terms: Dental Caries
Study type: Interventional

Summary: 
      The aim of this clinical trial was to compare the clinical performances of composite resin
      restorations with/without the polyethylene fiber to the first permanent molar teeth with
      extensively carious pediatric patients. A total of 75 restorations with (FC; n=38)or without
      (C; n=37) fiber were placed in the first permanent molar teeth.

      Restorations were evaluated at baseline-6-12-18 months according to the modified-USPHS
      criteria. Data were analyzed with Chi-Square and Cochran's Q (p<0.05).
    

Detailed description: 
      Fiber reinforced composite restorations developed in recent years have been presented to
      improve the negative properties of composite resin systems applied by the traditional method
      thanks to the fact that the fibers act as a crack stopper, reduce polymerization shrinkage by
      decreasing the the mass of composite resin material between the remaining dentin structure
      and the fiber. Many authors having conducted tremendous experience in this field of research
      have reported that the polyethylene fiber is an innovative approach because it not only
      increases the flexural strength but also improves fracture toughness. Its woven fiber
      orientation provides the stresses to be dispersed throughout the restoration, and therefore
      reinforces the restoration and the remaining tooth structure in multiple directions.
    

Intervention name(s): Genial Posterior Composite with Polyethylene Fiber; Genial Posterior Composite
Intervention type(s): Device; Device
Intervention description(s): Placing restorations,Genial Posterior Composite with Polyethylene Fiber, after bonding procedures, remaining tooth composite resin walls were created and cured for 20 s. Prepared ribbond fiber pieces, 2-mm-wide approximately 12mm-long, (Ribbond Thinner, Higher, Modulus, Ribbond Inc,Seattle) were wetted with an unfilled resin for 2 minutes at a non-light environment. The inner surfaces of the prepared class I cavity were lined with flowable resin. After removing the excess resin, pre-wetted polyethylene fiber was condensed circumferentially and embedded with a hand instrument into the bed of unpolymerized flowable composite and then polymerized for 20 seconds with Light Emitting Diodes. After curing for 20 s, composite resin was applied to the rest of the cavity incrementally, each increment was cured for 20 seconds. Finally, the restoration was shaped with finishing diamonds and silicon instruments.; Placing Genial Posterior Composite, the enamel and dentin were conditioned with bonding procedure using an applicator, left undisturbed for five to 10 seconds, and then dried thoroughly for five seconds with oil-free air under air pressure, Genial Direct Posterior resin was applied with the incremental technique (2 mm thick layers) and light-cured for 20 seconds. Finally, the restoration was shaped with finishing diamonds and silicon instruments
Other intervention name(s): Micro hybrid composite with Polyethylene Fiber; Micro hybrid composite
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary purpose: Treatment
Keywords: Composite resin; Clinical Evaluation; Polyethylene Fiber; First Permanent Molars; Extensive carious