Three-dimensional assessment of the middle cranial fossa and central skull base following Herbst appliance treatment

Okano, Karine Sayure; Cevidanes, Lúcia Helena Soares; Cheib, Paula Loureiro; Ruellas, Antônio Carlos de Oliveira; Yatabe, Marília; Nguyen, Tung; Franchi, Lorenzo; McNamara, James A.; Souki, Bernardo Quiroga

doi:10.2319/101517-694.1

Cited by 5 publications

(3 citation statements)

References 20 publications

(20 reference statements)

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“…In this regard, Basion was landmarked in the multiplanar sections and prelabeled with a 0.2-mm spherical dot and inter-timing point-to-point displacement was assessed using the Q3DC extension of the software. 21 Displacement was considered as the linear projection in the multiplanar 2D Cartesian coordinates (X, Y, and Z) between time points. Positive and negative values (mm) indicated Basion displacement along the X, Y, and Z coordinates according to the following pattern:…”

Section: Step 3 Basion Displacement Measurement and Euclidean Distances Registrationmentioning

confidence: 99%

Three-dimensional assessment of the spheno-occipital synchondrosis and clivus after tooth-borne and bone-borne rapid maxillary expansion:

Leonardi¹,

Lagravère²,

Barbato³

et al. 2021

The Angle Orthodontist

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Objectives To assess changes in spheno-occipital synchondrosis after rapid maxillary expansion (RME) performed with conventional tooth-borne (TB) and bone-borne (BB) appliances. Materials and Methods This study included 40 subjects with transverse maxillary deficiency who received TB RME or BB RME. Cone-beam computed tomography images (CBCT) were taken before treatment (T0), and after a 6-month retention period (T1). Three-dimensional surface models of the spheno-occipital synchondrosis and basilar part of the occipital bone were generated. The CBCTs taken at T0 and T1 were registered at the anterior cranial fossa via voxel-based superimposition. Quantitative evaluation of Basion displacement was performed with linear measurements and Euclidean distances. The volume of the synchndrosis was also calculated for each time point as well as the Nasion-Sella-Basion angle (N-S-Ba°). All data were statistically analyzed to perform inter-timing and intergroup comparisons. Results In both groups, there was a small increment of the volume of the synchondrosis and of N-S-Ba° (P < .05). Basion showed a posterosuperior pattern of displacement. However, no significant differences (P > .05) were found between the two groups. Conclusions Although TB and BB RME seemed to have some effects on the spheno-occipital synchondrosis, differences were very small and clinically negligible.

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Section: Step 3 Basion Displacement Measurement and Euclidean Distances Registrationmentioning

confidence: 99%

Three-dimensional assessment of the spheno-occipital synchondrosis and clivus after tooth-borne and bone-borne rapid maxillary expansion:

Leonardi¹,

Lagravère²,

Barbato³

et al. 2021

The Angle Orthodontist

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show abstract

“…Recent three‐dimensional (3D) study 21 concluded that Herbst appliance therapy did not produce clinically significant changes in the middle cranial fossa and central skull base.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, MCF alignment determines nasomaxillary positioning and the changes in the middle cranial fossa and central skull base relative protrusive or retrusive effects of the maxilla and mandible. 19,20 Recent three-dimensional (3D) study 21 concluded that Herbst appliance therapy did not produce clinically significant changes in the middle cranial fossa and central skull base.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the stability of treatment with Herbst appliance associated with Hyrax expander and fixed orthodontics through counterpart analysis: A longitudinal follow‐up study

Aidar

Marchi

Fuerte

et al. 2022

Orthod Craniofacial Res

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Objective:The aim of this study was to evaluate the stability of treatment with a Herbst appliance associated with Hyrax expander (Stage I), followed by fixed appliances (Stage II) and follow-up for an average of 4 years after Stage II, on dentoskeletal facial structures. Methods: This study involved 50 adolescents with Angle Class II division 1 malocclusion associated with mandibular retrognathism: Treated Group (TG-25) and Control Group (CG-25). Lateral cephalometric radiographs were taken: T1, immediately before Stage I (TG) or at the beginning of the follow-up period (CG); T2, at the end of Stage I (TG) or the follow-up period (CG); T3, at the end of Stage II (TG); and T4, on average, 4 years after Stage II (TG). Enlow's counterpart analysis and some cephalometric measurements were evaluated. Parametric and non-parametric tests were used (P ≤ 0.05). Results:The ramus alignment variables (P < 0.001), SNB (0.040), ANB (<0.001), 1.PP (P = 0.015), 1.MP (P < 0.001), ms/RLp (P < 0.001), mi/RLp (P < 0.001) and S-LS (P = 0.005) showed differences between TG and CG from T1 to T2. Longitudinally, there were differences in ramus alignment, P

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Six years long term evaluation of a class II division 1 patient treated with Herbst appliance and 2 miniscrews in the lower arch as anchorage reinforcement: A case report

Manni¹,

Papi

Migliorati

2022

International Orthodontics

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Three-dimensional assessment of the middle cranial fossa and central skull base following Herbst appliance treatment

Abstract: HA therapy did not produce clinically significant changes in the middle cranial fossa and central skull base.

Cited by 5 publications

References 20 publications

Three-dimensional assessment of the spheno-occipital synchondrosis and clivus after tooth-borne and bone-borne rapid maxillary expansion:

Three-dimensional assessment of the spheno-occipital synchondrosis and clivus after tooth-borne and bone-borne rapid maxillary expansion:

Evaluation of the stability of treatment with Herbst appliance associated with Hyrax expander and fixed orthodontics through counterpart analysis: A longitudinal follow‐up study

Six years long term evaluation of a class II division 1 patient treated with Herbst appliance and 2 miniscrews in the lower arch as anchorage reinforcement: A case report

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