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Tooth ankylosis refers to a fusion between a tooth and underlying bony support tissues. In some species, this is a normal process that occurs during the formation or maintenance of the dentition. [1] By contrast, in humans tooth ankylosis is pathological, whereby a fusion between alveolar bone and the cementum of a tooth occurs.
The prevalence is of PFE is about 0.06% in population. In this type of failure, teeth that are non-ankylosed fail to erupt in the mouth. These teeth do not have a precursor tooth that is blocking their path. These teeth tend to erupt partially but then fail to erupt as the time goes on.
The provisional bridge is a transitional restoration that protects the teeth that are weakened by the preparation, and stabilises the dental tissues until the fabrication of the final restoration, moreover, it can pave the way to the aesthetics of the future permanent restoration and its appearance, which can help the patient accept the final ...
Dental avulsion is a type of dental trauma, and the prevalence of dental trauma is estimated at 17.5% and varies with geographical area. [36] Although dental trauma is relatively low, dental avulsion is the fourth most prevalent type of dental trauma. [37] Dental avulsion is more prevalent in males than females.
Ankylosis is common in the anterior tooth after trauma and can be referred to as replacement resorption. In this process PDL cells are destroyed and as a result the cells of the alveolar bone will perform most of the healing. Radiographic examination of a patient with ankylosis may also reveal a loss of the PDL and bony bridging. [citation needed]
At that time, the first permanent tooth erupts. This stage, during which a person has a combination of primary and permanent teeth, is known as the mixed stage. The mixed stage lasts until the last primary tooth is lost and the remaining permanent teeth erupt into the mouth. There have been many theories about the cause of tooth eruption.