Identification of orthodontic patients at risk of severe apical root resorption
| Autor: | Diane M. Doppel, Ron Van 't Hullenaar, Anne Marie Kuijpers-Jagtman, Jon Årtun |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Time Factors Adolescent Tooth Movement Techniques Radiography Root Resorption Dentistry Orthodontics Root resorption Risk Assessment Severity of Illness Index Statistics Nonparametric Young Adult Incisor Tooth Apex Maxilla Medicine Humans Odontometry Prospective Studies Prospective cohort study Child Apical root resorption business.industry Periapical radiography Radiography Dental Digital Middle Aged medicine.disease Resorption stomatognathic diseases medicine.anatomical_structure Evaluation of complex medical interventions [NCEBP 2] Female business |
| Zdroj: | American Journal of Orthodontics and Dentofacial Orthopedics, 135, 4, pp. 448-55 American Journal of Orthodontics and Dentofacial Orthopedics, 135, 448-55 |
| ISSN: | 0889-5406 |
| DOI: | 10.1016/j.ajodo.2007.06.012 |
| Popis: | Contains fulltext : 80408.pdf (Publisher’s version ) (Closed access) INTRODUCTION: Current information suggests that the major variation in orthodontic root resorption can be explained by differences in individual predisposition. Our aim was therefore to test the predictive value of the amount of maxillary incisor resorption about 6 and 12 months after bracket placement for the resorption at appliance removal. METHODS: We measured tooth length of the maxillary incisors on digitally converted periapical radiographs, adjusted for projection errors, made before treatment (T1), about 6 months (T2) and 12 months (T3) after bracket placement, and at the end of active treatment (T4) of 267 prospectively enrolled orthodontic patients, and interpreted reduced tooth length as apical root resorption. Anatomic and occlusal parameters were scored on the T1 radiographs and study models. Anamnestic and treatment parameters were collected from standardized recordings in the charts. RESULTS: The Spearman R for resorption of each incisor ranged from 0.61 to 0.76 at T2 vs T4, and from 0.77 to 0.88 at T3 vs T4 (P 1.0 mm of resorption at T2 and 0.5% of those with no incisors with >2.0 mm of resorption at T3 had at least 1 incisor with >5.0 mm of resorption at T4. Amount of resorption at T3 and maxillary tooth extraction were included in the final prediction model for resorption of the most severely affected central and lateral incisors at T4, with explained variances of 0.71 and 0.67, respectively. Treatment duration and time with square wires was not related to resorption (P >0.05). CONCLUSIONS: Patients at risk of severe apical root resorption can be identified according to the amount of resorption during the initial treatment stages. |
| Databáze: | OpenAIRE |
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