Loss of tooth substance, usually through decay but also through various limited trauma, can be compensated for with fillings - so-called "fillings". The preferred material used is light-curing dental composite with the appropriate aesthetic qualities (colour, translucency, etc.).

Dental fillings

Dental sealings
The dental seal hermetically seals the grooves and the gaps in the side teeth, so that bacteria have nowhere to settle and this space is no longer retentive.
Dental sealing is mainly done for young permanent teeth, i.e. shortly after eruption. The teeth to be sealed are usually the molars and premolars. Sealing is also done on young temporary teeth. Adults can also benefit from sealing, but the teeth to be sealed must be flawless.

Inlay
Dental inlays and onlays can be used instead of traditional fillings to restore teeth affected by decay or other structural defects. While light-curing fillings are applied by the dentist during a single session, inlays and onlays are constructed in the dental laboratory following an impression taken by the dentist.
The inlay is positioned between the cusps of the tooth, in the middle of the occlusal surface of the tooth.

Onlay
Dental inlays and onlays can be used instead of traditional fillings to restore teeth affected by decay or other structural defects. While light-curing fillings are applied by the dentist during a single session, inlays and onlays are constructed in the dental laboratory following an impression taken by the dentist.
The onlay works like the inlay, but also covers one or more cusps, or even the entire occlusal surface of the tooth and is used when coronal destruction is more advanced.