Abstract
Objective
The aim of this study was to correlate the absence of BB with skeletal patterns and incisor inclination using cone-beam computed tomography (CBCT).
Methods
The sample comprised CBCT images of 45 patients undergoing orthodontic treatment. BB was classified in each third of the anterior teeth as critical, slender, regular, and thick. The skeletal pattern was determined by the ANB (A point, nasion, B point) angle and the incisor inclination using the 1.NA and 1.NB measurements and the interincisal angle (1:1).
Results
In both analyses, the skeletal pattern of class II revealed better BB in the cervical and middle thirds than classes I and III. A higher proportion of critical BB was found in the middle thirds, and the apical third presented the best regular and thick BB conditions, mainly class I. Less BB was observed in middle and apical thirds in the upper incisors and in cervical thirds in lower incisors, mostly when they were more upright.
Conclusions
Knowledge of alveolar bone height and thickness can alter the treatment plan in orthodontics. During orthodontic treatment, more attention should be paid to the lower incisors and vertical teeth because of poor BB conditions, especially in class III skeletal patterns.
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Abbreviations
- BB:
-
Buccal bone
- CBCT:
-
Cone-beam computed tomography
- CEJ:
-
Cementum–enamel junction
- FOV:
-
Field of view
- LC:
-
Lower canine
- LCI:
-
Lower central incisors
- LLI:
-
Lower lateral incisor
- UC:
-
Upper canine
- UCI:
-
Upper central incisor
- ULI:
-
Upper lateral incisors
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The authors present and state, by means of this letter, that this manuscript, entitled “TOMOGRAPHIC EVALUATION OF BUCCAL BONE IN DIFFERENT SKELETAL PATTERNS AND INCISORS INCLINATION”, has no conflict of interest.
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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5). Informed consent was obtained from all patients for being included in the study.
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Lessa, A.M.G., Ferreira, P.P., Dantas, L.L. et al. Tomographic evaluation of buccal bone in different skeletal patterns and incisors inclination. Oral Radiol 37, 591–599 (2021). https://doi.org/10.1007/s11282-020-00496-1
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DOI: https://doi.org/10.1007/s11282-020-00496-1