An In Vitro Evaluation of the Effects of Air-Polishing Powders on Sound and Demineralised Enamel.

Guma, Elton; Kiliaridis, Stavros; Scherrer, Susanne S; Antonarakis, Gregory S (2023). An In Vitro Evaluation of the Effects of Air-Polishing Powders on Sound and Demineralised Enamel. Materials, 16(13) MDPI 10.3390/ma16134811

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AIM

To evaluate the effects of two air-polishing powders, during orthodontic treatment, on the surface roughness of sound and demineralised enamel.

MATERIALS AND METHODS

Forty-two caries-free human molars were collected, and the enamel surfaces were flattened and polished. Teeth were assigned to two groups (n = 21 each), a sound- and a demineralised-enamel group (subjected to pH-cycling over 2 weeks to create artificially induced white spot-like lesions). Within each group, teeth were further assigned to three groups (n = 7 each), air polished with either sodium bicarbonate, erythritol, or a negative control (water). Each sample was treated for 5 and 150 s. The average surface roughness (Ra) for each sample was measured using white-light-sensor profilometry.

RESULTS

On sound enamel, the Ra was roughly 0.17 ± 0.07 μm. After 150 s of air polishing, the Ra increased with erythritol (by 0.28 μm), and even more so with bicarbonate treatment (by 0.68 μm) (p < 0.01). On demineralised enamel, the Ra was roughly 0.79 ± 0.56 μm. The Ra increased after 5 s of air-polishing treatment similarly with erythritol and bicarbonate powders (by 1.03 μm and 1.04 μm, respectively) (p = 0.025), and even more after 150 s (by 2.48 μm and 2.49 μm, respectively) (p < 0.001).

CONCLUSIONS

On white spot lesions, one should be aware that enamel surface roughness will increase with both erythritol and bicarbonate air-polishing powders, especially with longer exposure times.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics
04 Faculty of Medicine > School of Dental Medicine

UniBE Contributor:

Kiliaridis, Stavros

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1996-1944

Publisher:

MDPI

Language:

English

Submitter:

Pubmed Import

Date Deposited:

17 Jul 2023 12:28

Last Modified:

07 Aug 2024 15:44

Publisher DOI:

10.3390/ma16134811

PubMed ID:

37445125

Uncontrolled Keywords:

air polishing bicarbonate demineralised enamel enamel erythritol orthodontics surface roughness white spot lesions

BORIS DOI:

10.48350/184848

URI:

https://boris.unibe.ch/id/eprint/184848

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