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Overerupted teeth are often sharp due to lack of tooth wear (dental attrition) by adjacent teeth during chewing. [citation needed] Overeruption is treated either by forcing the tooth back using orthodontic techniques, or by cutting the interfering part of the tooth and installing a crown. [citation needed]
Non-eruption of non-ankylosed teeth occurs due to an eruption mechanism that has failed leading to a posterior unilateral/bilateral open bite. [28] Infra occlusion is the primary hallmark of PFE. Primary teeth are most commonly affected and normally all teeth distal to the most mesially affected tooth will show characteristics of this disease.
The formation of teeth begins during embryonic development and is a process that is highly regulated by various signaling pathways, which, if disrupted as a result of genetic mutations or environmental factors, can lead to developmental anomalies, including hyperdontia. Tooth development begins with the formation of tooth buds in the jaw.
Teeth may become impacted because of adjacent teeth, dense overlying bone, excessive soft tissue or a genetic abnormality. Most often, the cause of impaction is inadequate arch length and space in which to erupt. That is the total length of the alveolar arch is smaller than the tooth arch (the combined mesiodistal width of each tooth).
Locally, it could be manifested in tooth eruption when the movement of a tooth follicle is followed by an active resorption of jaw bone tissue. Resorption of old bone and formation of a new one are balanced in a well-developed skeleton. However, resorption starts taking a large part in remodeling processes with age.
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.
Dilaceration is a developmental disturbance in shape of teeth. It refers to an angulation, or a sharp bend or curve, in the root or crown of a formed tooth.This disturbance is more likely to affect the maxillary incisors and occurs in permanent dentition. [1]
Intraosseous eruption is a stage of tooth eruption that directly precedes the baby tooth emerging from the gums.This stage involves the formation of root of a tooth which allows the tooth to erupt from the bone.