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Pulp necrosis is a clinical diagnostic category indicating the death of cells and tissues in the pulp chamber of a tooth with or without bacterial invasion. [1] It is often the result of many cases of dental trauma, caries and irreversible pulpitis.
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.
Occurs due to a localized and limited injury to the root surface or periodontium. It is a transient, self-limiting process of resorption that ceases after removal of the traumatic stimulus and is followed by healing of root surface, cementum, and periodontal ligament. [16]
Regenerative endodontics is founded by the seminal work by Dr. Ostby in the early 1960s. He hypothesized that the presence of blood clot within the root canal promotes healing of the pulp, hence maintaining the vitality of the pulp. This can be quite similar to the role of blood clot in other injury site in the healing process.
A study used e-PTFE membranes to cover surgically constructed average size bone defects in the mandibular angles of rats. Consequently, the e-PTFE membrane acted as a barrier to soft tissue and sped up bone healing, which took place between 3–6 weeks while no healing occurred in the non-membrane control group during a 22 week period. [16]
Pulp capping is a technique used in dental restorations to protect the dental pulp, after it has been exposed, or nearly exposed during a cavity preparation, from a traumatic injury, or by a deep cavity that reaches the center of the tooth, causing the pulp to die. [1]
After having patients describe in painful detail what caused their moral injury, therapists asked them to choose someone they saw as a compassionate moral authority and hold an imaginary conversation with that person, describing what happened and the shame they feel. They were then asked to verbalize the response, using their imagination.
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]