Clinical Performance of Two Bulk-Fill Composite of Posterior Restorations

Inclusion Criteria: * must have given written informed consent to participate in the trial * need at least three posterior restorations * must be available for the required post-operative follow-up visits * have a buccal to lingual/palatal width no greater than 1/3 the distance from buccal to lingual/palatal cusp tips * At least one occlusal and proximal contact on a natural tooth * Cavities depth \> 2 mm in cervico-occlusal Exclusion Criteria: * have severe medical complications (organ transplants, long term antibiotic or steroid treatment, cancer or immunocompromised) and disabilities who may not be able to tolerate the time required to complete the restorations * have xerostomia either by taking medications known to produce xerostomia or those with radiation induced or Sjogren's syndrome patients * chronic periodontitis * present with any systemic or local disorders that contra-indicate the dental procedures included in this study * an unstable occlusion * severe bruxing * teeth with periapical pathology or expected pulp exposures * are pregnant. * Endodontically treated teeth