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Angle Orthod. 2015 Sep;85(5):771-6. doi: 10.2319/042814-308.1. Epub 2014 Nov 13.

Contribution of cone beam computed tomography to the detection of apical root resorption after orthodontic treatment in root-filled and vital teeth.

Author information

1
a   PhD student, private practice, Goiânia, Brazil.
2
b   Professor, Department of Orthodontics, School of Dentistry, Federal University of Goiás, Goiânia, Brazil.
3
c   Professor and Chairman, Department of Stomatologic Science, School of Dentistry, Federal University of Goiás, Goiânia, Brazil.

Abstract

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  =  .4364). The mean differences in root length between preorthodontic and postorthodontic treatment in filled- and vital roots were -0.30 mm and -0.16 mm, respectively, without any statistical difference (P  =  .4197) between them.

CONCLUSION:

There appears to be no increase in ARR after orthodontic treatment in root-filled teeth with no earlier ARR.

KEYWORDS:

Cone beam computed tomography; Endodontics; Orthodontics; Root resorption

PMID:
25393801
DOI:
10.2319/042814-308.1
[Indexed for MEDLINE]

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