9 general practices in the Netherlands were provided with two composite resin adhesives, each for a period of 9 months. One contained MDPB (Adhesive P), and the other one was used as a control (Adhesive S). Patient's age, SES, and caries risk, as well as tooth type/number, reason for restoration placement, used restorative material and bonding agent, and affected surfaces were recorded. All interventions carried out on these teeth in the next 6 years were extracted from the electronic patient records, along with their date, type, reason, and surfaces. Two dependent variables were defined: general failure, and failure due to secondary caries. All data handling and statistical analyses were carried out in R 4.0.5.

Inclusion Criteria:

• Needing at least one dental restoration

Exclusion Criteria:

• Opted out of data collection

Patients who visited one of the participating general dental practices during the study period needing at least one dental restoration

Anonimized data will be published in the DANS-easy archive. The study description are available to anyone, and the data are available upon request.

Data will become available upon study publication.

Any individual requesting access through the archive will obtain access