Relationship between different skeletal facial types and anterior alveolar bone thickness with cone-beam computed tomography in an Asian population

Li, Baochao; Li, Jialing; Wang, Huijuan; Xie, Xiaoyan; Wen, Jia; Li, Huang

doi:10.21037/atm-22-935

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…Before treatment, the morphology of the alveolar bone of the lower anterior teeth in different vertical patterns was different. For the hyperdivergent group, the alveolar bone thicknesses of the lingual side at the apical and midpoint levels were the thinnest among the groups [ 10 , 14 , 35 ], which suggested a greater lingual periodontal risk for LCIs during the root retracting process. To maintain the root within the alveolar bone and achieve the ideal overjet after decompensation for the desired surgical correction [ 36 , 37 ] in the hyperdivergent group, the clinicians retracted LCIs in a controlled tipping manner with greater retraction of the crown than of the root apex (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Hyperdivergent subjects have thinner cortical alveolar bone than normodivergent and hypodivergent subjects [ 10 , 12 , 13 ]. The lingual alveolar bone thickness of mandibular anterior teeth was negatively correlated with the FMA value [ 14 ]. Furthermore, it is widely accepted that orthodontic movement should allow the tooth to remain within the bone.…”

Section: Introductionmentioning

confidence: 99%

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Three-dimensional assessment of periodontal support of lower incisors for skeletal Class II malocclusion undergoing presurgical orthodontic treatment with different vertical skeletal patterns

Lyu,

Ma,

Wang

et al. 2023

Prog Orthod.

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Background The aim of the present study was to compare periodontal support changes during retraction of mandibular anterior teeth for skeletal Class II malocclusion with different facial divergence and to analyze relevant factors influencing bone remodeling by applying three-dimensional (3D) cone-beam computed tomography (CBCT) reconstruction technology. Methods Forty-eight patients with Class II malocclusion requiring surgical orthodontic treatment enrolled in the study were divided into the hyperdivergent group (n = 16), normodivergent group (n = 16) and hypodivergent group (n = 16) according to their vertical skeletal patterns. Cone-beam computed tomography (CBCT) scans were obtained before treatment (T1) and after presurgical orthodontic treatment (T2). The two-dimensional (2D) alveolar bone morphology, movement of mandibular central incisors and volume of the alveolar bone around incisors were measured on the labial and lingual sides by 3D CBCT reconstruction technology. Statistical analyses were performed with one-way ANOVA, paired t tests and multiple linear regression. Results During presurgical orthodontic treatment, the alveolar bone height on the labial side of the hyperdivergent group decreased significantly (P ≤ 0.05), but was maintained in the normodivergent and hypodivergent groups (P > 0.05). However, the alveolar bone volume, alveolar bone thickness at each level and alveolar bone height on the lingual side decreased significantly for all the groups. Apart from the initial morphometric measurements at T1, the morphology of lingual alveolar bone at T2 was significantly influenced by the direction and amount of tooth movement. Horizontal retraction and vertical protrusion of the root apex were negatively related to the alveolar bone on the lingual side after presurgical orthodontic treatment. Conclusion For Class II malocclusion patients undergoing presurgical orthodontic treatment, the changes in the periodontal support of the lower central incisors varied in different vertical skeletal patterns. There exists a great periodontal risk of alveolar bone resorption on the lingual side for various vertical types. To avoid alveolar bone deterioration, it is essential to investigate the bone remodeling of patients with different alveolar bone conditions and cautiously plan tooth movement prior to orthodontic treatment. Moreover, 3D measurements based on CBCT construction can provide complementary information to traditional 2D measurements.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three-dimensional assessment of periodontal support of lower incisors for skeletal Class II malocclusion undergoing presurgical orthodontic treatment with different vertical skeletal patterns

Lyu,

Ma,

Wang

et al. 2023

Prog Orthod.

View full text Add to dashboard Cite

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Dehiscence and fenestration of skeletal Class III malocclusions with different vertical growth patterns in the anterior region: A cone-beam computed tomography study

Han,

Fan,

Wang

et al. 2024

American Journal of Orthodontics and Dentofacial Orthopedics

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Multidimensional tooth movement boundaries in the extended aesthetic zone: a cone-beam computed tomography study

Zhang,

Li,

et al. 2024

Australasian Orthodontic Journal

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Purpose To establish tooth movement boundaries in four directions by a novel morphometric analysis of alveolar bone using conebeam computed tomography (CBCT) images. The aim was to assist clinicians in minimising the occurrence of bone fenestration and dehiscence, thereby facilitating safe and efficient orthodontic treatment. Methods CBCT images of 123 male volunteers comprising 55 individuals with hypodivergent vertical skeletal patterns and 68 individuals with normodivergent vertical skeletal patterns and normal occlusions but without a history of previous orthodontic treatment, were analysed. The mesiodistal and labiolingual alveolar bone height (ABH) as well as the labiolingual cancellous bone thickness (CBT) were measured in relation to the maxillary and mandibular anterior teeth and premolars. These parameters were subsequently compared between the different vertical skeletal patterns. Results Teeth within the extended aesthetic zone exhibited a limited range of safe movement on the labial aspect across all three root aspects, with 97.6% of the upper lateral incisors and 98.4% of the lower lateral incisors positioned against the labial cortical plate (<0.5 mm). The lingual aspects had significantly more space for tooth movement compared with the labial aspects (P < 0.05). The ABH was significantly greater in the hypodivergent group than the normodivergent group involving particular teeth and sites in the maxilla (P < 0.05), while no significant difference was noted in the mandible. The hypodivergent group also exhibited thicker cancellous bone on most labial and some lingual aspects. Conclusions The findings provided the average tooth movement range in the horizontal and vertical directions within the extended aesthetic zone in male individuals presenting with a normal occlusion. It was concluded that a hypodivergent growth pattern may have a relatively large range of safe tooth movement in the sagittal and vertical directions.

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Relationship between different skeletal facial types and anterior alveolar bone thickness with cone-beam computed tomography in an Asian population

Cited by 3 publications

References 30 publications

Three-dimensional assessment of periodontal support of lower incisors for skeletal Class II malocclusion undergoing presurgical orthodontic treatment with different vertical skeletal patterns

Three-dimensional assessment of periodontal support of lower incisors for skeletal Class II malocclusion undergoing presurgical orthodontic treatment with different vertical skeletal patterns

Dehiscence and fenestration of skeletal Class III malocclusions with different vertical growth patterns in the anterior region: A cone-beam computed tomography study

Multidimensional tooth movement boundaries in the extended aesthetic zone: a cone-beam computed tomography study

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