Fuchs, Florian and Mayer, Laura Antonia and Unterschuetz, Lena and Ziebolz, Dirk and Oberueck, Nadia and Schulz-Kornas, Ellen and Hahnel, Sebastian and Koenig, Andreas (2024) Effect of powder air polishing and ultrasonic scaling on the marginal and internal interface (tooth-veneer) of ceramic veneers: an in vitro study. CLINICAL ORAL INVESTIGATIONS, 28 (12): 655. ISSN 1432-6981, 1436-3771
Full text not available from this repository. (Request a copy)Abstract
ObjectivesThis study investigated the influence of prophylactic treatments and thermocycling on the marginal and internal veneering interface (tooth-veneer) as well as on the surface texture of ceramic veneers.Materials and methodsA total of 32 extracted human premolars were restored with veneers made of lithium disilicate (LDS) or zirconia-reinforced lithium silicate (ZLS). An artificial aging of the specimens was conducted via five cycles of both thermocycling (5/55 degrees C) and prophylactic treatment (powder air polishing or ultrasonic scaling). Changes in the marginal interface and in the surface texture were examined using confocal laser scanning microscopy. The internal interface and the microstructure were investigated using micro X-ray computed tomography.ResultsArtificial aging resulted in a deepening of the marginal interface across all groups (mean height: 4.51-15.74 mu m, maximum height: 10.42-22.71 mu m, cross-section: 256.68-1525.84 mu m(2), regardless of the veneer material or prophylaxis method. No change in surface texture was observed. The internal interface exhibited defects for all groups after artificial aging. ZLS showed cracks in five out of eight veneers after exposure to ultrasonic scaling and thermocycling.ConclusionCeramic veneers exhibited a high resistance to prophylactic measures in terms of surface durability, but a deepening of the marginal interface should be taken into account. With regard to the formation of cracks within the material, the use of ultrasonic scaling is not recommended for ZLS veneers.Clinical relevanceThe influence of artificial aging, including prophylactic treatments, plays a critical role in assessing longevity for veneers in defect-oriented and esthetic dentistry.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PORCELAIN LAMINATE VENEERS; RESTORATIVE MATERIALS; SUBGINGIVAL DEBRIDEMENT; BOND STRENGTH; CAD/CAM; CROWNS; PERFORMANCE; EFFICACY; DEVICES; DRIVEN; Adhesive; Surface texture; Prophylaxis; Dental cleansing; Artificial accelerated aging; Thermal cycling |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Nov 2025 07:42 |
| Last Modified: | 18 Nov 2025 07:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64786 |
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