Frequency of root resorption following trauma to permanent teeth

Abstract

This retrospective study evaluated the frequency of development of root resorption in dental trauma cases involving supporting tissue. For 249 traumatized teeth of 125 patients aged between 7 and 51 years, we collected data on the gender and age of the patient, the teeth involved, the type of trauma, and the period between dental injury and initial examination. Radiographic parameters examined in relation to root resorption included the presence of inflammatory external root resorption, internal root resorption, replacement resorption, and canal calcification. Data were analyzed by chi-squared test, Fisher's exact test, and mult iple logistic regression (P < 0.05). The results indicated that there was a significant relationship between the period from the date of injury until initial examination and the occurrence of inflammatory external resorption (P = 0.0199), as well as the type of injury (P = 0.0406). Furthermore, external resorption was most frequently associated with intrusive luxation (92.8%), followed by avulsion (89.0%), lateral luxation (80.2%), and extrusive luxation (77.4%). Among the types of dental injury, replacement resorption was observed more frequently in cases of avulsion (87.2%). The only factor that was significantly associated with this type of resorption was the type of injury (P < 0.0001). Root resorption is observed more frequently and its risk of development is higher in cases of severe trauma, especially avulsion and intrusive luxation. (J Oral Sci 57, 73-78, 2015)

A 4‐year follow‐up case of extrusive luxation in a patient with cerebral palsy

“…It has been reported that extrusive luxations pulp necrosis occurs in 43% of the cases, and it can be detected within the first 4 months or first year. Inflammatory resorption occurs in approximately 5.5% of the cases within the first 5 months, and intracanal calcification occurs in 35% of the cases within the first year after the injury, mainly in teeth with incomplete root development . In the present case, intracanal calcification was detected only on the fourth year follow‐up radiograph.…”

“…Pulp survival depends on the extent of the injury and repair capacity of the pulp, and it is also related to the degree of root development. In immature teeth with an open apex, especially with apical foramen > 1 mm, and in the absence of bacterial invasion, there is a high possibility of revascularization . However, when signs of inflammatory root resorption are observed, endodontic treatment should not be delayed because this process advances extremely fast in young patients .…”

“…Endodontic treatment is advised in teeth with complete root formation in which pulpal necrosis is anticipated or in those teeth with mature or immature apex, in which symptoms and severe signs of pulpal necrosis are present . However, complications can occur weeks, months, and even years after the occurrence of the dental trauma, so an adequate diagnosis, emergency management, and follow‐up are crucial to preserving the health of the traumatized tooth …”

“…6 However, complications can occur weeks, months, and even years after the occurrence of the dental trauma, so an adequate diagnosis, emergency management, and followup are crucial to preserving the health of the traumatized tooth. 15 The purpose of this report is to present the emergency management and 4-year-follow-up of a 9-year-old patient with CP who suffered extrusive luxation in permanent dentition and to present a discussion of the relevant literature concerning this topic.…”

One Case of Root Tip Foreign Body of Anterior Tooth Trauma

“…Early diagnosis of tooth trauma and root resorption can provide a better prognosis. Current study shows that the diagnosis of root resorption is related to patient age, trauma time and particularly tooth trauma [8]. The conclusion is that root resorption is a severe complication of tooth trauma.…”