Evaluation of Post-operative Sensitivity of Bulk Fill Resin Composite Versus the Nano Resin Composite.
Condition: Sensitivity
MeSH terms: Hypersensitivity
Study type: Interventional

Summary: 
      Our study evaluated and compared the postoperative sensitivity of the placement technique
      (incremental and bulk fill) in class II posterior composite resin restorations bonded with
      two different adhesive strategies (self-etch and etch-and-rinse).Sixty patients were randomly
      selected, their age range from 25 to 40 years old. They were divided into 2 main groups
      according to the packing technique of composite material; incremental Tetric Evoceram and
      Tetric Evoceram bulk fill composite.30 patients (n=30) were selected for incremental Tetric
      Evoceram composite restorations and they were equally divided according to the adhesive
      systems used (etch and rinse or self-etch adhesive strategy) (n=15 teeth).30 patients (n=30)
      were selected for Tetric Evoceram bulk fill composite restorations and they were equally
      divided according to the adhesive systems used (etch and rinse or self-etch adhesive
      strategy) (n=15 teeth).Post-operative pain assessed at 24 hours, 1 week and 1 month using the
      visual Analog Scale Score (VAS).Each patient was instructed to place a vertical mark on the
      VAS line at home to indicate the intensity of pain at each assessment period.
    

Detailed description: 
      Our results revealed that when the two composite types using self-etch adhesive system &
      total-etch adhesive system were evaluated; there was no statistically significant difference
      between the two composite types after 1 day, 1 week as well as 1 month.

      When the two adhesive systems were compared using Bulk Fill composite & incremental Nano
      resin composite there was no statistically significant difference between the two adhesive
      systems after 1 day, 1 week as well as 1 month.

      Using Bulk Fill composite with self-etch adhesive; there was a statistically significant
      decrease in prevalence of hypersensitivity after 1 week. There were no cases with
      hypersensitivity after 1 week as well as 1 month. Using Bulk Fill composite with Total etch
      adhesive; there was a statistically significant decrease in prevalence of hypersensitivity
      after 1 week as well as from 1 week to 1 month.

      Using Incremental Nano resin composite with self-etch adhesive; there was a statistically
      significant decrease in prevalence of hypersensitivity after 1 week as well as from 1 week to
      1 month. Using Incremental Nano resin composite with Total etch adhesive; there was a
      statistically significant decrease in prevalence of hypersensitivity after 1 week as well as
      from 1 week to 1 month.
    

Intervention name(s): Bulk fill composite; Nano resin composite
Intervention type(s): Other; Other
Intervention description(s): Composite resin dental material; Dental composite material
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: bulk fill resin composite placement techqniues versus nano resin composite at postoperative hypersensitivity
Masking: Double (Participant, Outcomes Assessor)
Primary purpose: Treatment
Keywords: Post operative sensitivity