Fillings are used to restore cavities, which are caused by tooth decay. The most common used direct filling materials at Gentle Smile Dental Studio. The know-how used in composite resin allows it to be bonded/adhered to the tooth. With correct oral maintenance, composite resin restorations can last greater than a decade. These choices present more protection and energy and are sometimes fabricated in a dental lab. Inlays and onlays sit inside or over the cusp of the tooth, respectively and are a middle ground between fillings and crowns. Crowns cover the entire tooth and are used when a toot