Case 2: lab

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CHIEF COMPLAINT:
Extreme mobility of the deciduous tooth.

DIAGNOSIS:
Female patient, 40 years old, non-smoker. Presented agenesis of tooth 31 with the presence of deciduous tooth 71.

TEAM PLAY ‘DENTIST – DENTAL TECHNICIAN’ NOTES:
A provisional resin crown was executed to rehabilitate the patient until the maturation of the soft tissue was complete.

First, this provisional crown was fixed to the lingual surface of the adjacent teeth. After the definitive impression it was fixed with orthodontic wire to the buccal surface of such teeth. The definitive impression was done with addition silicones using a one-stage technique. Simultaneously, a shade selection was done with an appropriate guide.

In the dental lab, a Maryland bridge with a zirconia framework veneered with a feldspathic ceramic was built. This framework was virtually designed and executed in CAD-CAM system.

Special attention was set in the wings design, extending the inter-proximally along the entire height of the abutments. This was done to achieve a better stability of the bridge and to reinforce the connectors.

On the inner surface of the wings it was placed a ceramic adhesive in order to use the conventional technique for joining the wings to the bridges.

This Maryland bridge tried to join the mechanical strength of the framework, to the bonding of the ceramic to the enamel, and to the aesthetics’ of the zirconia’s veneering with a feldspathic ceramic. The Maryland type bridge was glued to the abutments using a conventional adhesive technique. 

This proved to be a rehabilitation, affordable, sturdy functionally and aesthetically acceptable minimally invasive treatment.

DENTAL LABORATORY: 
DentalMaia, Castelo da Maia, Portugal.