How does the etching duration with phosphoric acid affect the behavior of tooth-colored composite fillings in anterior teeth? A clinical study

Descrizione riassuntiva dello studio

When providing a tooth with a composite filling, the tooth must be pre-treated. The pre-treatment ensures that the filling adheres well to the tooth. The standard pre-treatment of the tooth is done by applying a special gel for a short time. This gel contains phosphoric acid. Currently, it is unclear what the optimal exposure time of the phosphoric acid gel is. In this clinical study, we investigate how the duration of the exposure time of the phosphoric acid gel affects the susceptibility of the fillings to marginal discoloration. Furthermore, we examine how the anterior tooth fillings behave over time in this study.

(BASEC)

Intervento studiato

In our study, participants are randomly assigned to groups. This is important to obtain reliable results from the study. Each group receives a different treatment. In our study, there are 2 groups:

- Group 1 (Experimental group): In this group, the phosphoric acid gel is applied simultaneously to the enamel (the outer layer of the tooth) and the dentin (the tooth substance located beneath the enamel). The exposure time of the gel is a total of 10 seconds on both the enamel and the dentin.

- Group 2 (Control group): In this group, the phosphoric acid gel is first applied to the enamel and only shortly thereafter to the dentin. The exposure time of the gel is 15-30 seconds on the enamel and 10-15 seconds on the dentin.

(BASEC)

Malattie studiate

Adults often have anterior teeth that require a composite filling. Such a composite filling may be necessary due to caries (a 'cavity' in the tooth), a defective filling that needs to be replaced, or due to a desired shape change of an anterior tooth. When a composite filling is needed, one typically receives a tooth-colored composite filling.

(BASEC)

Sponsor

UZB | University Center for Dental Medicine Basel Department of Periodontology, Endodontology, and Cariology University of Basel Mattenstrasse 40 CH-4058 Basel

(BASEC)