Frequency of root resorption following trauma to permanent teeth
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- J. Soares Adriana
- Department of Restorative Dentistry, Endodontics Area, State University of Campinas
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- A. Souza Gustavo
- São Leopoldo Mandic Dental Research Center
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- C. Pereira Andrea
- Department of Restorative Dentistry, Endodontics Area, State University of Campinas
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- Vargas-Neto Julio
- Department of Restorative Dentistry, Endodontics Area, State University of Campinas
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- A. Zaia Alexandre
- Department of Restorative Dentistry, Endodontics Area, State University of Campinas
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- J. N. L. Silva Emmanuel
- Department of Endodontics, School of Dentistry, Health Sciences Center, Grande Rio University
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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)
収録刊行物
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- Journal of Oral Science
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Journal of Oral Science 57 (2), 73-78, 2015
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