The purpose of this study is to determine whether a new tooth-colored composite material is effective for load-bearing dental fillings.

In this post-market prospective randomized controlled clinical trial, posterior class II restorations will be evaluated for their clinical performance. The study will investigate the survival and efficacy of a bulk-filled composite resin restorative material for a period of 2 years. The bulk fill composite will be used according to indication and applied in approximal two- or three-surface restorations in permanent teeth.

Inclusion Criteria:

• be older than 18 years of age
• have 2 back teeth with similar size tooth decay or failed fillings, that are in need of new moderate-size fillings
• both study teeth must be vital (tested with cold)
• both study fillings must be visible on the cheek-side of the tooth.

Exclusion Criteria:

• do not meet all inclusion criteria
• are under active orthodontic treatment
• have severe medical complications
• have dry mouth
• have chronic gum disease or poor oral hygiene
• are unavailable for long term recall (minimum of 2 years required)
• cannot tolerate the rubber dam
• have an unstable tooth contacts
• have severe bruxing or clenching, or are in need of jaw joint therapy
• are pregnant or breastfeeding.

Double blind (Subject, Investigator, Outcomes Assessor)