Common Concerns About Dental Crowns and Temporary Adhesives - Dentistry

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Orthodontic (dental prosthesis) issues?


Hello Dr.
Lin, I would like to ask the following questions:
(1) Is it standard procedure to initially use temporary cement to attach a crown (or prosthesis) and observe it for one to two weeks? When applying the permanent cement for the final crown (or prosthesis), could mixing the permanent cement with the previous temporary cement cause any issues?
(2) After applying the permanent cement to the final crown (or prosthesis), how long should one wait before getting a dental cleaning? Specifically, how long does it take for the final crown (or prosthesis) to stabilize enough to withstand a dental cleaning?
(3) Additionally, for previously placed crowns (or prostheses) that have shown root exposure in recent years, is it safe to use a water flosser? Will the water pressure harm the exposed root? Thank you for your response!

Liu Xiaojie, 30~39 year old female. Ask Date: 2020/07/13

Dr. Lin Jiayong reply Dentistry


Hello: 1.
When switching to a permanent adhesive, the temporary adhesive will be thoroughly removed first.
2.
It depends on the composition of the permanent adhesive; if there are concerns about affecting the adhesive, you may wait a week before getting a dental cleaning.
3.
If the machine is approved by the health department, it is acceptable, but please adjust the water pressure and do not use too strong of a force.
Thank you!

Reply Date: 2020/07/13

More Info


Hello! Thank you for your questions regarding dental crowns and temporary adhesives. Let's address each of your concerns systematically.

1. Temporary Adhesives and Standard Procedure: Yes, it is common practice to use temporary adhesives to secure a dental crown or prosthetic temporarily while the patient adjusts to it. This allows both the dentist and the patient to monitor how the crown fits and functions over a period of time, typically one to two weeks. This period is crucial for assessing comfort, bite alignment, and any potential issues that may arise. When it comes to the transition from temporary to permanent adhesive, mixing the two types of adhesives is generally not recommended. Temporary adhesives are designed to be easily removable, while permanent adhesives are formulated for long-term stability. If there is a mix, it could compromise the bond strength of the permanent adhesive, potentially leading to failure of the crown. Therefore, it is essential that the temporary adhesive is thoroughly cleaned off before applying the permanent adhesive.

2. Timing for Dental Cleaning After Crown Placement: After a dental crown has been permanently cemented, it is advisable to wait at least 24 to 48 hours before undergoing a professional dental cleaning. This waiting period allows the adhesive to set properly, ensuring that the crown is securely bonded to the tooth. If you have any concerns about the stability of the crown or if you experience discomfort, it is best to consult your dentist before scheduling a cleaning. They can provide guidance based on your specific situation.

3. Using a Water Flosser with Exposed Tooth Roots: If you have exposed tooth roots due to gum recession or other dental issues, using a water flosser can be beneficial, but it should be done with caution. The pressure from the water can help remove debris and plaque from around the gum line and between teeth, which is particularly important when roots are exposed. However, it is crucial to use a gentle setting to avoid causing any trauma to the sensitive root surfaces. High-pressure settings may irritate the gums or cause discomfort. Always consult with your dentist before using a water flosser, especially if you have specific concerns about gum health or sensitivity.

In summary, the use of temporary adhesives is a standard procedure in dental practice, and care should be taken to avoid mixing them with permanent adhesives. After the placement of a permanent crown, waiting a short period before dental cleaning is advisable to ensure the crown is securely in place. Finally, using a water flosser can be beneficial for maintaining oral hygiene around exposed roots, but it should be done gently to avoid irritation. Always keep an open line of communication with your dentist regarding any concerns or questions you may have about your dental health. Thank you for your inquiry, and I hope this information helps clarify your concerns!

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