During implantation of zirconia porcelain crowns and bridges, how to accurately obtain the patient's oral impression to ensure a high fit?
Publish Time: 2024-11-12
During the implantation of zirconia porcelain crowns and bridges, obtaining accurate oral impressions is a key step to ensure that the restoration is highly fitted with the abutment and surrounding tissues.First of all, the choice of materials is crucial. We usually choose high-precision, low-shrinkage impression materials, such as silicone rubber impression materials. Silicone rubber has good fluidity and elastic recovery ability, and can accurately replicate the fine structure in the mouth. When using, pay attention to the mixing ratio and operation time of the material to ensure that it is in the best working condition. For example, polyether rubber impression materials can provide clear and accurate details, but its hydrophilicity requires special attention, and surfactants can be appropriately added to improve its adaptability to the moist oral environment.The patient's position will also affect the accuracy of the impression. The patient should be in a comfortable and stable position with a good head support. It is generally recommended that patients tilt their heads back slightly to prevent saliva and other liquids from accumulating in specific areas during the impression process and affecting the quality of the impression.Before taking the impression, the mouth needs to be carefully cleaned and dried. However, care should be taken not to over-dry the abutment teeth and surrounding tissues to avoid damaging their surface structures. Saliva and blood on the tooth surface can be removed by gentle blowing or gently blotting.The selection and use of trays is another key link. The tray should match the patient's oral morphology and its size and depth should be appropriate. For patients with larger or smaller dental arches, special trays need to be customized. Applying an appropriate amount of tray adhesive inside the tray can prevent the impression material from separating from the tray during removal. At the same time, appropriate holes can be made or additional retention structures can be added at key parts of the tray, such as the corresponding abutment teeth, to improve the stability of the impression.In addition, the doctor's operating skills are also indispensable during the impression taking process after Implantation Of Zirconia Porcelain Crowns And Bridges. The impression material should be injected into the mouth slowly and evenly to avoid bubbles. And before the material is completely solidified, keep the tray stable to prevent it from moving. Only through these delicate operations and precautions can the oral impression be accurately obtained, laying the foundation for the perfect fit of the zirconia porcelain crown bridge with the abutment teeth and surrounding tissues.
