Contribution of cone beam computed tomography to the detection of apical root resorption after orthodontic treatment in root-filled and vital teeth
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Data
2015
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Resumo
Objective: To investigate whether root-filled teeth are similar to vital pulp teeth in terms of apical
root resorption (ARR) after orthodontic treatment.
Materials and Methods: An original sample of cone beam computed tomography (CBCT) images
of 1256 roots from 30 orthodontic patients were analyzed. The inclusion criteria demanded root-
filled teeth and their contralateral vital teeth, while teeth with history of trauma had to be excluded to
comply with exclusion criteria. CBCT images of root-filled teeth were compared before and after
orthodontic treatment in a split-mouth design study. Tooth measurements were made with
multiplanar reconstruction using axial-guided navigation. The statistical difference between the
treatment effects was compared using the paired t-test.
Results: Twenty posterior root-filled teeth and their contralaterals with vital pulp were selected
before orthodontic treatment from six adolescents (two boys and four girls; mean [SD] age 12.8
[1.8] years). No differences were detected between filled and vital root lengths before treatment (P
5 .4364). The mean differences in root length between preorthodontic and postorthodontic
treatment in filled- and vital roots were 20.30 mm and 20.16 mm, respectively, without any
statistical difference (P 5 .4197) between them.
Conclusion: There appears to be no increase in ARR after orthodontic treatment in root-filled
teeth with no earlier ARR. (Angle Orthod. 2015;85:771–776.)
Descrição
Palavras-chave
Root resorption, Cone beam computed tomography, Endodontics, Orthodontics
Citação
CASTRO, Iury; VALLADARES-NETO, José; ESTRELA, Carlos. Contribution of cone beam computed tomography to the detection of apical root resorption after orthodontic treatment in root-filled and vital teeth. Angle Orthodontist, Huntsville, v. 85, n. 5, p. 771-776, 2015.