As one of the most preferred cosmetic dentistry applications, zirconia crowns can both restore the looks and the functionality of the teeth, satisfying the patients needs to every possible extent. Notwithstanding the comfort and the quality they provide, there has been a recent controversy claiming that zirconia crowns reek off bad smell and accusing them as one of the primary reasons for bad breath. Even though some of the patients may experience bad breath after the installation of their zirconia crowns, the main reason for that is not zirconia crowns themselves, but quality and the lack of thoroughness of the operation that had been conducted.
By default, zirconia crowns do not release any kind of smell by themselves or cause bad breath by any kind of intraoral interaction. If the operation has been conducted neatly, with adequate emphasis on the patients existing oral conditions, there is not any plausible reason for the zirconia crowns to cause odor in the mouth.
Zirconia crowns do not release any kind of odor or contribute to the composition of bad breath in the mouth. As stated above, if the patient is experiencing bad breath or any kind of odor in their mouth after the installation of zirconia crowns, its most probably that the reason for the occurrence of this problem is not the zirconia crowns, rather the poor quality of dental operation that had been conducted. In order to precisely explain the reasons behind the occurrence of the smell in the crowned teeth, a brief classification regarding the quality of dental operations could be made. In brief, it can be an operational malpractice that emerged while in the process of fitting the quality dental crown or it can be an existing situation which had been overlooked during the operation and advanced without being noticed (because it's hidden by the presence of the crowns). The latter is presumably a cavity, unnoticed while the course of the treatment and advanced clandestinely, under the "protection" of zirconia crowns. Notwithstanding, there are several prevalent operational malpractices which can make the crowned teeth smell. For instance, discordance between the crowns and existing tooth surface, excessive cementation gap or a gum irritation that took place during the treatment process. In sum there are a variety of reasons that might cause a crowned tooth to reek off bad odor yet, the sole presence of a zirconia crown is not one of them.
If you are struggling with the smell that's coming from the crown or its periphery, you should contact your dentist immediately. Your dentist will examine your mouth and provide a reliable and permanent solution to eradicate the root cause of the smell coming from your crowns. Keep in mind that your crowns might need to be replaced or re-fitted, in order to thoroughly treat the underlying cause of the smell.