Sodium bicarbonate-based powder (CLASSIC®, EMS SA, Nyon, Switzerland) was used for air polishing the samples belonging to this group. All surfaces were numbered and application was made to the mesial and distal surfaces of the root, buccal and lingual surfaces of the crown to avoid repeated instrumentations. After device and samples were fixed, a metal plate with a 5 mm diameter hole was placed on the sample to limit the application area. Surfaces one and three were air-polished using the with a medium power setting (9 LED power setting), and surfaces two and four were air-polished using the with a maximum power setting (17 LED power setting). The distance between the handpiece and the tooth surface was kept constant at 5 mm, and the treatment angulation was adjusted to 60 degrees. In all applications, the application time was 5 seconds and the water setting was medium (6 LED). The powder chambers of the device were filled to the maximum level in each application.

Glycine-based powder (PERIO®, EMS SA, Nyon, Switzerland) was used for air polishing the samples belonging to this group. All surfaces were numbered and application was made to the mesial and distal surfaces of the root, buccal and lingual surfaces of the crown to avoid repeated instrumentations. After device and samples were fixed, a metal plate with a 5 mm diameter hole was placed on the sample to limit the application area. Surfaces one and three were air-polished using the with a medium power setting (9 LED power setting), and surfaces two and four were air-polished using the with a maximum power setting (17 LED power setting). The distance between the handpiece and the tooth surface was kept constant at 5 mm, and the treatment angulation was adjusted to 60 degrees. In all applications, the application time was 5 seconds and the water setting was medium (6 LED). The powder chambers of the device were filled to the maximum level in each application.

AIR-FLOW® Master Piezon is intended for use in the cleaning and polishing of teeth by the projection of water,air, and dental powders onto the tooth surface. The device removes dental plaque, soft deposits, and surface stains from pits, grooves, interproximal spaces, or smooth surfaces of teeth. This air polishing device was used for all powder instrumentations.

The teeth were divided into three groups, the crown and exposed root surface were air polished using three powders at instrumentation time of 5s, combinations of medium and maximum power and medium water settings, distance of 5mm and angulation of 60 degree. Samples were scanned in a micro-computed tomography (micro-CT) at baseline and then after powder treatment and the defect depth was estimated.

The teeth were divided into three groups, the crown and exposed root surface were air polished using three powders at instrumentation time of 5s, combinations of medium and maximum power and medium water settings, distance of 5mm and angulation of 60 degree. Samples were scanned in a micro-computed tomography (micro-CT) at baseline and then after powder treatment and the demineralization depth was estimated.

The teeth were divided into three groups, the crown and exposed root surface were air polished using three powders at instrumentation time of 5s, combinations of medium and maximum power and medium water settings, distance of 5 mm and angulation of 60 degree. Samples were scanned in a micro-computed tomography (micro-CT) at baseline and then after powder treatment and the mineral density was estimated.

The teeth were divided into three groups, the crown and exposed root surface were air polished using three powders at instrumentation time of 5s, combinations of medium and maximum power and medium water settings, distance of 5mm and angulation of 60 degree. Samples were scanned in a micro-computed tomography (micro-CT) at baseline and then after powder treatment and the defect volume was estimated.