1.Alveolar Bone Morphotype in Orthodontic Patients
Jaime A. Jacques ; Felipe A. Balbontin-Ayala ; Karla F. Gambetta-Tessini ; Arturo Besa-Alonso ; Erica I. Bustamante-Olivares
Archives of Orofacial Sciences 2021;16(2):127-140
ABSTRACT
Orthodontic treatments have been described as a risk factor for the development of gingival
recessions. This descriptive and cross-sectional study was performed to evaluate the alveolar
bone morphotype of the upper and lower anterior of 33 orthodontic treatment of candidate
patients. The images were obtained from a high-resolution cone beam computerised tomography.
Then, the thickness of the alveolar bone plate of teeth was measured in six levels, recording the
presence of dehiscences and fenestrations. A total of 2,334 sites were evaluated. The average
thickness of the maxillary alveolar bone at the buccal surface was 0.70, 0.62 and 1.43 mm at the
cervical, middle and apical levels, respectively, while in the mandibular teeth it was 0.53, 0.50
and 2.96 mm. At the palatal and lingual surfaces, the bone was thicker than the buccal except
at the apical level of the mandible. Most of the examined sites were measured less than 1 mm
(n = 1,235, 52.9%), associated with high prevalence of bone dehiscences (57.6%) and fenestrations
(33.3%), particularly in skeletal Class III patients. The observed bone morphotype involved a high
vulnerability to bone resorption, and the subsequent gingival recession occurrence, face to orthodontic
movements.
Alveolar Bone Loss
;
Orthodontics