Part 2: Is the maxillary canting and its surgical correction in patients with CFM correlated to the mandibular deformity?

Pluijmers, Britt I.; Lande, Lara S. van de; Caron, Cornelia J.J.M.; Wolvius, Eppo B.; Dunaway, David; Padwa, Bonnie L.

doi:10.1016/j.jcms.2018.05.044

Cited by 10 publications

(8 citation statements)

References 22 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There was only the description of type II mandibular deformity developing a more prominent facial asymmetry than type I in the previous studies. 4,8 Comparably, Pluijmers et al 30 assessed the upper molar cant of 81 CFM patients and found a significant correlation with the severity of mandibular deformity (r = 0.370, P < .001). The extent of the lower dental midline deviation was found to have no correlation with the condylar hypoplasia extent or Pruzansky-Kaban types, which might be explained by the varied proportions of transverse translation to roll rotation of the mandibular midline (the long axis connecting the lower dental midline and chin midline) in relation to the midsagittal plane.…”

Section: Discussionmentioning

confidence: 91%

Three-Dimensional Analysis of the Condylar Hypoplasia and Facial Asymmetry in Craniofacial Microsomia Using Cone-Beam Computed Tomography

Chen

Vinayahalingam

Bergé

et al. 2021

Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

Purpose: To assess the condylar hypoplasia and its correlation with craniofacial deformities in adults with unilateral craniofacial microsomia (CFM).Methods: Pretreatment cone-beam computed tomography scans of consecutive adults (mean age: 20.4 § 3.0 years; range: 17.3 to 31.4 years) with Pruzansky-Kaban type I and IIA CFM were reconstructed in 3D. Both condyles were segmented. Asymmetry ratios (affected side/contralateral side) of condylar volume were calculated to indicate the extent of condylar hypoplasia. 3D cephalometry was performed to quantify the maxillomandibular morphology and facial asymmetry. The correlations in between were assessed by using Pearson's or Spearman's correlation coefficients.Results: 36 subjects were enrolled, consisting of 22 subjects with Pruzansky-Kaban type I and 14 subjects with type IIA. The condyles in type IIA group were significantly more hypoplastic in height (asymmetry ratio: 40.69 vs 59.95%, P = .006) and volume (18.16 vs 47.84%, P < .001) compared to type I group. Type IIA group had a significantly smaller SNB value than type I group (72.94˚vs 77.41˚, P = .012), and a significantly greater facial asymmetry (P < .05). The hypoplastic extent of condylar volume and Pruzansky-Kaban types were significantly correlated with SNB (r = 0.457 and r = -0.411, respectively), upper incisor deviation (r = -0.446 and r = 0.362), chin deviation (r = -0.477 and r = 0.527), upper occlusal plane can't

show abstract

Section: Discussionmentioning

confidence: 91%

Three-Dimensional Analysis of the Condylar Hypoplasia and Facial Asymmetry in Craniofacial Microsomia Using Cone-Beam Computed Tomography

Chen

Vinayahalingam

Bergé

et al. 2021

Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

show abstract

“…OC is an unpleasant feature of a smile that influences the tooth show and the smile arc [ 17 , 18 ]. In severe forms, this transverse discrepancy requires surgical intervention [ 19 , 20 ]. Previous literature revealed a limitation in OC categorization among clinical orthodontics assessment indices.…”

Section: Discussionmentioning

confidence: 99%

Criterion Validity of the Newly Developed Occlusal Cant Index

Alhuwaish

Almoammar

Fakhouri

et al. 2022

IJERPH

View full text Add to dashboard Cite

Objectives: To assess the criterion-related (concurrent) validity of the newly developed occlusal cant index (OCI). Materials and Methods: Four standardized posterior–anterior (PA) cephalometric radiographs of four patients were obtained at a 0° occlusal cant (OC) and manipulated to create various degrees of OC from 1° to 4° on the right and left sides, with a total of 36 PA images. The angle between the actual horizontal line and the occlusal plane was manually drawn on each PA radiographic image. The set of radiographic images was displayed to 36 orthodontists, who were asked to measure the drawn angle and apply the OCI to each PA radiographic image. Results: The overall criterion-related validity of the OCI was statistically significant among all grades. Conclusion: The OCI is highly valid and recommended for clinical consideration.

show abstract

“…They found no significant difference in maxillary dilatation between the two groups, but the group with a untruncated maxillary junction showed more buccal inclination in the posterior tooth segment. The purpose of our research is to evaluate whether osteotomy of the lateral maxillary wall can be superior to the LFIO, considering its advantages in local anesthesia and other complications [ 22 – 24 ].…”

Section: Discussionmentioning

confidence: 99%

Displacement and stress distribution of the craniomaxillofacial complex under different surgical conditions: a three-dimensional finite element analysis of fracture mechanics

Chen

et al. 2021

BMC Oral Health

View full text Add to dashboard Cite

Objective To provide a simplified treatment strategy for patients with maxillary transverse deficiency. We investigated and compared the fracture mechanics and stress distribution of a midline palatal suture under dynamic loads during surgically-assisted rapid palatal expansion. Methods Based on the cone-beam computed tomography (CBCT) data of a 21-year-old female volunteer, a three-dimensional model of the cranio-maxillofacial complex (including the palatal suture) was constructed. A finite element analysis model was constructed based on meshwork. After the yield strength of the palatal suture was set, an increasing expansion force (0–500 N) was applied within 140 ms to calculate the time–load curve, which mimicked nonsurgical bone expansion (model A). The same method was used to evaluate the fracture process, time and stress distribution of the palatal suture in maxillary lateral osteotomy-assisted (model B) and LeFort osteomy I (LFIO)-assisted expansion of the maxillary arch (model C). Results Compared with model A, the palatal suture of model B and model C showed a faster stress accumulation rate and shorter fracture time, and the fracture time of model B and model C was almost identical. Compared with model A, we discovered that model B and model C showed greater lateral extension of the maxilla, and the difference was reflected mainly in the lower part of the maxilla, and there was no difference between model B and model C in lateral extension of the maxilla. Conclusions Compared with arch expansion using nonsurgical assistance (model A), arch expansion using maxillary lateral wall-osteotomy (model B) or LFIO had a faster rate of stress accumulation, shorter time of fracture of the palatal suture and increased lateral displacement of the maxilla. Compared with arch expansion using LFIO (model C), arch expansion using lateral osteotomy (model B) had a similar duration of palatal suture rupture and lateral maxillary extension. In view of the trauma and serious complications associated with LFIO, maxillary lateral wall-osteotomy could be considered a substitute for LFIO.

show abstract

Part 2: Is the maxillary canting and its surgical correction in patients with CFM correlated to the mandibular deformity?

Cited by 10 publications

References 22 publications

Three-Dimensional Analysis of the Condylar Hypoplasia and Facial Asymmetry in Craniofacial Microsomia Using Cone-Beam Computed Tomography

Three-Dimensional Analysis of the Condylar Hypoplasia and Facial Asymmetry in Craniofacial Microsomia Using Cone-Beam Computed Tomography

Criterion Validity of the Newly Developed Occlusal Cant Index

Displacement and stress distribution of the craniomaxillofacial complex under different surgical conditions: a three-dimensional finite element analysis of fracture mechanics

Contact Info

Product

Resources

About