Brittle dental materials replaced with new hybrid for diastema treatment

Dental

Due to the brittle nature of ceramic dental materials, creating microveneers that are not invasive using existing Computer-aided design & computer-aided manufacturing has proved difficult. Michael Tsao and Hsuan Chen looked at a range of ceramic samples during a series of testing, choosing the hybrid ceramic Vita Enamic for this diastema treatment. This material had a decent marginal integrity (an important parameter as marginal gap formation is associated with recurrent caries and pulpal disease), with 0.2mm wall thickness.

The patient for this treatment was a 29-year-old male who said no to the option of orthodontic therapy because he wanted an option that was more time efficient and preserved as much of his existing tooth as possible. He had decided that the ordinary procedure which produced micro veneers on refractory stumps was not going to be appropriate for him because it takes a long time. Instead, it was decided that Michael Tsao and Hsuan Chen would use Vita Enamic hybrid ceramics to close the gap in the digital workflow which would be completed within in a single session.

“Brittle dental materials replaced with a new hybrid for diastema treatment.“

Once the reparation area was thoroughly cleaned, they moved onto deciding on the shade of the tooth. This was done by the two central incisors in the upper jaw using the Vita Toothguide 3D-Master.

Retraction threads are placed to repress or retract the gingiva from the tooth neck. Once these were put in, a scan was done using Cerec Omnicam (Dentsply Sirona). Scanning powder was used to aid the scan taking place inside the mouth. The system Sirona Connect sent the data record to where the microveneers were to be created.

The hybrid ceramic selected to use in the process had a higher elasticity and a tougher exterior than the usual ceramic materials. This is because the component has a dual ceramic-polymer network structure has a low wall thickness, meaning professionals can work with a higher level of precision.

The last step involved separating the restorations from the attachment using a fine diamond which was finalised and tried-in.

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