Cone beam computed tomography for assessment of root length and marginal bone level during orthodontic treatment
Henrik Lund, Kerstin Gröndahl, Hans-Göran Gröndahl, Henrik Lund, Kerstin Gröndahl, Hans-Göran Gröndahl
Abstract
Objective: To evaluate the accuracy and precision of cone beam computed tomography (CBCT) with regard to measurements of root length and marginal bone level in vitro and in vivo during the course of orthodontic treatment.
Materials and methods: Thirteen patients (aged 12-18 years) from an ongoing study and a dry skull were examined with CBCT using multiplanar reformatting for measurements of root length and marginal bone level. For in vivo evaluation of changes in root length, an index according to Malmgren et al was used, along with a modification of this method.
Results: The in vitro mean difference between physical and radiographic measurements was 0.05 mm (SD 0.75) for root length and -0.04 mm (SD 0.54) for marginal bone level. In vivo the error was <0.35 mm for root length determinations and <0.40 mm for marginal bone level assessments.
Conclusion: Despite changes in tooth positions, the CBCT technique yields a high level of reproducibility, enhancing its usefulness in orthodontic research.
Figures
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Mean differences and standard deviations…
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Mean differences and standard deviations between physical and radiographic in vitro bone level…
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Precision of radiographic in vivo…
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Precision of radiographic in vivo assessments of root length and bone level at…
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Intraobserver agreement between readings 1…
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Intraobserver agreement between readings 1 and 2 at 6-month and end-point examinations using…
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Intraobserver agreement between readings 1…
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Intraobserver agreement between readings 1 and 2 at 6-month and end-point examinations using…
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- Comparative Study
- Adolescent
- Alveolar Process / diagnostic imaging*
- Alveolar Process / pathology
- Cephalometry / methods
- Child
- Cone-Beam Computed Tomography / methods*
- Cone-Beam Computed Tomography / statistics & numerical data
- Female
- Follow-Up Studies
- Humans
- Image Processing, Computer-Assisted / methods
- Male
- Malocclusion, Angle Class I / diagnostic imaging
- Malocclusion, Angle Class I / therapy
- Odontometry / methods
- Orthodontic Appliances
- Orthodontics, Corrective*
- Radiographic Image Enhancement
- Reproducibility of Results
- Root Resorption / diagnostic imaging
- Root Resorption / pathology
- Serial Extraction
- Tooth Apex / diagnostic imaging
- Tooth Apex / pathology
- Tooth Root / diagnostic imaging*
- Tooth Root / pathology
- Full Text Sources
- Medical
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Precision of radiographic in vivo…
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Precision of radiographic in vivo assessments of root length and bone level at…
Figure 7
Intraobserver agreement between readings 1…
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Intraobserver agreement between readings 1 and 2 at 6-month and end-point examinations using…
Figure 8
Intraobserver agreement between readings 1…
Figure 8
Intraobserver agreement between readings 1 and 2 at 6-month and end-point examinations using…
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Source: PubMed