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1.
Am J Orthod Dentofacial Orthop ; 160(4): 573-587, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34332794

RESUMO

INTRODUCTION: This study aimed to evaluate maxillary skeletal and dental yaw in patients with skeletal Class III facial asymmetry and investigate its correlation with menton deviation. METHODS: Initial cone-beam computed tomography data from 60 patients with skeletal Class III malocclusion were used. There were 30 patients in both the symmetrical group (menton deviation <2 mm) and the asymmetrical group (menton deviation >4 mm). After reconstruction of 3-dimensional (3D) cone-beam computed tomography data, maxillary yaw and 3D positions of skeletal and dental landmarks were measured and compared between the groups. After that, correlations between menton deviation and the other variables were assessed. RESULTS: No significant difference was noted in maxillary skeletal and dental yaw between the 2 groups. In the assessment of 3D positions, translation of the maxillary bone and maxillary dentition toward the menton deviation was observed (P <0.01). Maxillary skeletal and dental yaw was not significantly correlated with menton deviation in the asymmetrical group. CONCLUSIONS: Maxillary skeletal and dental yaw was not evident in either group. Therefore, when planning maxillary surgery for patients with skeletal Class III facial asymmetry malocclusion, it may be appropriate to shift the focus of decompensation from maxillary yaw to maxillary translation.


Assuntos
Assimetria Facial , Má Oclusão Classe III de Angle , Cefalometria , Tomografia Computadorizada de Feixe Cônico , Assimetria Facial/diagnóstico por imagem , Humanos , Imageamento Tridimensional , Má Oclusão Classe III de Angle/diagnóstico por imagem , Mandíbula , Maxila/diagnóstico por imagem
2.
J Contemp Dent Pract ; 22(6): 713-720, 2021 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-34393132

RESUMO

AIM: To report a treatment case of mandibular deviation caused by congenital cervical lymphangioma with traditional orthodontic techniques, following-up by 10-year retention. BACKGROUND: Lymphangiomas, developmental anomalies, can induce various disturbances of swallowing, mastication, speech, breathing, and skeletal deformities as well as psychological stress and anxiety for the patient and their family. Lymphangiomas are benign with virtually no possibility of turning into a malignant lesion, so clinical management aims to treat the patient functionally. CASE DESCRIPTION: A girl, aged 6 years and 4 months, complained about facial asymmetry and anterior crossbite caused by congenital cervical lymphangioma. Her facial profile was the straight type with an adequate lip position. Anterior and right-side posterior crossbites were observed. On the frontal cephalogram, the menton shifted 3.0 mm to the right. A functional appliance with an expander was placed to correct her dental midline deviation and posterior crossbite. After 2-year treatment, the anterior and right-side posterior crossbites were improved. Multibracket treatment began after the growth spurt. After 44-month active treatment, a functional occlusion, including a Class I molar relationship with a proper interincisal relationship, was achieved. A functional occlusion was maintained during a 10-year retention period, while a mandibular downward growth was observed through the retention period. CONCLUSION: Conventional orthodontic techniques enable functional and stable occlusion even in patients with mandibular deviation caused by congenital cervical lymphangioma, although only using early orthodontic management by itself may have some limitations. CLINICAL SIGNIFICANCE: The hybrid technique combining functional appliance and intermaxillary elastics proves to be an effective therapy for correcting occlusal cant and mandibular deviation caused by cervical lymphangioma.


Assuntos
Linfangioma , Má Oclusão , Cefalometria , Assimetria Facial , Feminino , Seguimentos , Humanos , Linfangioma/complicações , Linfangioma/terapia , Mandíbula
3.
Am J Orthod Dentofacial Orthop ; 160(2): 312-324, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34332693

RESUMO

This case report describes the treatment of a 29-year-old woman with facial asymmetry and 2 hopeless teeth. Her lower dental midline was shifted to the left side, and the mandibular left second molar would need to be extracted because of severe caries. The maxillary right second premolar was root rest, and the upper dental midline was shifted to the right side. Because of the patient's asymmetry and Class III skeletal pattern, a severe Class III relationship in the right canine region and lingual crossbite in the left side was observed. She did not want jaw surgery. The mandibular right first premolar, 2 hopeless teeth, and maxillary left second premolar were extracted, and orthodontic mini-implants were used to correct the dental midline, crossbite, and crowding. The mandibular left third molar was moved to the second molar extraction space by using orthodontic mini-implant anchorage. Adequate functional and esthetic results were obtained. Correction of the crossbite on the left side could improve facial asymmetry by changing the drape of the overlying lips.


Assuntos
Implantes Dentários , Má Oclusão , Procedimentos de Ancoragem Ortodôntica , Adulto , Cefalometria , Estética Dentária , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Feminino , Humanos , Má Oclusão/terapia
4.
Artigo em Inglês | MEDLINE | ID: mdl-34070132

RESUMO

A skeletal Class III malocclusion with open bite tendency is considered very difficult to treat orthodontically without surgery. This case report describes the lingual orthodontic treatment of an adult skeletal Class III patient with mandibular deviation to the left side, lateral open bite, unilateral posterior crossbite, zero overbite and negative overjet. The lower incisors were already retroclined to compensate with the skeletal discrepancy. The patient was treated by asymmetric molar extraction in the mandibular arch to retract the lower incisors and correct the dental midline, with the help of intermaxillary elastics. Lingual appliance was used with over-torqued lower anterior teeth's brackets to control the torque of mandibular incisors. After a 30-month treatment, satisfactory smile and facial esthetics and good occlusion was achieved. A 12-month follow-up confirmed that the outcome was stable. Asymmetric molar extraction could be a viable option to retract mandibular incisors in Class III malocclusion with lower dental midline deviation.


Assuntos
Má Oclusão , Mordida Aberta , Adulto , Cefalometria , Assimetria Facial , Humanos , Dente Molar
5.
Dental Press J Orthod ; 26(3): e21bbo3, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34190771

RESUMO

INTRODUCTION: Skeletal posterior crossbite (SPCB) has a multifactorial etiology, as it may be caused by parafunctional habits, atypical position of the tongue, tooth losses and maxillary or mandibular transverse skeletal asymmetries. Skeletal involvement may lead to facial changes and an unfavorable aesthetic appearance. The treatment of SPCB diagnosed in an adult patient should be correctly approached after the identification of its etiologic factor. Surgically-assisted rapid maxillary expansion (SARME), one of the techniques used to correct SPCB in skeletally mature individuals, is an efficient and stable procedure for the correction of transverse discrepancies that may be performed in the office or in a hospital. OBJECTIVE: This study discusses the results of asymmetrical SARME used to correct unilateral SPCB associated with transverse mandibular asymmetry. CONCLUSION: The treatment alternative used in the reported case was quite effective. At the end of the treatment, the patient presented adequate occlusion and facial aesthetics.


Assuntos
Má Oclusão , Dente , Adulto , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Humanos , Má Oclusão/diagnóstico por imagem , Má Oclusão/terapia , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Maxila , Técnica de Expansão Palatina
6.
Am J Orthod Dentofacial Orthop ; 160(3): 392-400, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34175163

RESUMO

INTRODUCTION: This study aimed to analyze adults with mandibular characteristics of skeletal Class II malocclusion with chin deviation. METHODS: Seventy-five adult patients aged from 18 to 35 years were included and divided into 3 groups on the basis of sagittal skeletal pattern and chin deviation: skeletal Class I symmetry group, skeletal Class II symmetry group, and skeletal Class II asymmetry group (25 patients per group). Mandibular measurements on cone-beam computed tomography images were performed, and the differences between 2 sides in each group and the differences among the 3 groups were investigated. RESULTS: Compared with the contralateral side, the deviated side of patients in the Class II asymmetry group showed significantly smaller condyle angle to midsagittal plane, condylar height, ramal length, and length of the mandibular body, whereas it showed a significantly larger distance from condylion to the midsagittal plane, ramus angle to the horizontal plane, and distance from gonion to the midsagittal plane. Most linear measurements in the Class II symmetry group were significantly smaller than those in the Class I symmetry group. These linear measurements on the contralateral side of the Class II asymmetry group showed no significant difference with the Class I symmetry group, and these measurements on the deviated side of the Class II asymmetry group showed no significant difference with the Class II symmetry group. CONCLUSIONS: Length of the mandible, rotation of condyle, the inclination of the ramus, and position of gonion should be considered in subjects with skeletal Class II asymmetry when making diagnosis and treatment planning.


Assuntos
Má Oclusão Classe III de Angle , Má Oclusão Classe II de Angle , Adulto , Cefalometria , Queixo/diagnóstico por imagem , Tomografia Computadorizada de Feixe Cônico , Assimetria Facial/diagnóstico por imagem , Humanos , Imageamento Tridimensional , Má Oclusão Classe II de Angle/diagnóstico por imagem , Mandíbula/diagnóstico por imagem , Côndilo Mandibular/diagnóstico por imagem
7.
J Craniomaxillofac Surg ; 49(9): 763-774, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34016501

RESUMO

To systematically assess the current literature on soft-tissue response associated with osseous movement following orthognathic surgery in patients with facial asymmetry. Six electronic databases (PubMed, EMBASE (via Ovid), Medline (via Ovid), Cochrane Library, Scopus, and Web of Science) and gray literature were searched for studies evaluating hard- and soft-tissue responses three-dimensionally after orthognathic surgery, using MeSH terms and keywords. The methodological quality and level of evidence of the included studies were analyzed using EPHPP and GRADE, respectively. The primary search yielded 125 articles, and 10 articles that satisfied the predefined inclusion criteria were finally included. All the included articles evaluated soft-tissue response, with six of them additionally investigating the magnitude of this response. Soft tissues move with hard tissues horizontally and anteroposteriorly; however, soft-tissue movement is less than hard tissue movement. In addition, soft tissue movement is more pronounced in the lower central facial region. Six articles were judged as having 'strong' methodological quality, while the evidence was found to be of 'low' quality for the soft-tissue response and the magnitude of this response. Despite a low level of evidence, the review substantiates a favorable three-dimensional soft-tissue response following osseous surgery. The soft-tissue response is more pronounced horizontally, anteroposteriorly, and in the lower central facial region. Nevertheless, well-designed prospective studies with a higher level of evidence are needed.


Assuntos
Cirurgia Ortognática , Procedimentos Cirúrgicos Ortognáticos , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Ossos Faciais , Humanos , Imageamento Tridimensional , Estudos Prospectivos
8.
Am J Med Genet C Semin Med Genet ; 187(2): 278-282, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33982860

RESUMO

In humans, physically attractive faces are measurably, though subtly, asymmetric. As asymmetry increases, it has a negative impact. Medically, asymmetry can be congenital or acquired. Symbolically, it has varied connotations from playfulness and complexity to despair and corruption. In Chinese opera, stylized make-up exaggerates the features, and aspects of the "mask" indicate qualities of the character. The asymmetric faces belong to characters who are corrupt, devious, or evil. In the Dan culture of western Africa, performance masks channel spirits in the community. A spirit with asymmetric facial mask exemplifies ugliness and moral failing. The Nasca culture of South America made generic figures of farmers, deities, and so on, but not of individuals. However, there is evidence of mutual influence between the Nasca and the Wari, with whom they traded. A clay figure apparently representing an individual, or at least a very specific recognized persona, is a ball player with facial asymmetry presumably due to injury. Here the message is one of fierceness and strength. The relative rarity of asymmetric facial depictions compared to symmetric ones is cross-cultural. This implies that asymmetry is special somehow, in all connotations of that term.


Assuntos
Assimetria Facial , Humanos
9.
J Oral Maxillofac Surg ; 79(8): 1750.e1-1750.e10, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33939960

RESUMO

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: Thirty-six 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 ρ = -0.411, respectively), upper incisor deviation (r = -0.446 and ρ = 0.362), chin deviation (r = -0.477 and ρ = 0.527), upper occlusal plane cant (r = -0.672 and ρ = 0.631), and mandibular plane cant (r = -0.557 and ρ = 0.357, P < .05). CONCLUSION: For unilateral CFM adults, greater condylar hypoplasia in volume along with more severe mandibular retrusion and facial asymmetry objectively indicated a higher scale of Pruzansky-Kaban classification (type IIA). These quantitative distinctions are expected to enhance the diagnostic reliability of CFM.


Assuntos
Síndrome de Goldenhar , Adolescente , Adulto , Tomografia Computadorizada de Feixe Cônico , Assimetria Facial/diagnóstico por imagem , Síndrome de Goldenhar/diagnóstico por imagem , Humanos , Imageamento Tridimensional , Mandíbula , Côndilo Mandibular/diagnóstico por imagem , Reprodutibilidade dos Testes , Adulto Jovem
10.
J Craniomaxillofac Surg ; 49(6): 435-442, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33934974

RESUMO

We aimed to compare the reliability of the surgery-first approach and the traditional orthodontic-first approach for the correction of facial asymmetry based on the new classification of facial asymmetry. Patients with facial asymmetry who underwent orthognathic surgery between January 2016 and January 2019 were included. Cephalometric changes and relapse ratios were analyzed 12 months before and after surgery. Patients were divided into horizontal and vertical asymmetry groups based on the asymmetry vector, and subgroup analysis was conducted. The surgery-first approach without presurgical orthodontic treatment and the orthodontic-first approach showed a similar degree of asymmetry correction and skeletal stability. The relapse ratios of the maxilla height in the surgery-first and orthodontic-first groups were 0.25 ± 0.21 and 0.27 ± 0.25, respectively (p = 0.63), the relapse ratios of the maxilla width were 0.31 ± 0.32 and 0.21 ± 0.2, respectively (p = 0.14), the mandibular height relapse ratios were 0.34 ± 0.58 and 0.29 ± 0.36, respectively (p = 0.69), and the mandibular width relapse ratios were 0.12 ± 0.22 and 0.26 ± 0.31, respectively (p = 0.058). The treatment period of the surgery-first group (18.5 ± 5.3 months) was significantly shorter than that of the orthodontic-first group (22.9 ± 7.5 months, p = 0.024). Among the surgery-first group, patients with vertical asymmetry (15.0 ± 3.2 months) had a shorter treatment than those with horizontal asymmetry (21.6 ± 6.8 months, p = 0.006). Although contesting traditional standards is always challenging, the surgery-first orthognathic approach may lead to a new era in traditional orthognathic approaches. This new classification of facial asymmetry could be useful and practical when treating patients with facial asymmetry regardless of the etiology.


Assuntos
Má Oclusão Classe III de Angle , Procedimentos Cirúrgicos Ortognáticos , Cefalometria , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Humanos , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Reprodutibilidade dos Testes , Resultado do Tratamento
11.
PLoS One ; 16(4): e0249961, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33886591

RESUMO

Patients with repaired unilateral cleft lip with palate (UCLP) often show dysmorphology and distorted facial motion clinically, which can cause psychological issues. However, no report has clarified the details concerning distorted facial motion and the corresponding possible causative factors. In this study, we hypothesized that the physical properties of the scar and surrounding facial soft tissue might affect facial displacement while smiling in patients with UCLP (Cleft group). We thus examined the three-dimensional (3D) facial displacement while smiling in the Cleft and Control groups in order to determine whether or not the physical properties of facial soft tissues differ between the Cleft and Control groups and to examine the relationship between the physical properties of facial soft tissues on 3D facial displacement while smiling. Three-dimensional images at rest and while smiling as well as the facial physical properties (e.g. viscoelasticity) of both groups were recorded. Differences in terms of physical properties and facial displacement while smiling between the two groups were examined. To examine the relationship between facial surface displacement while smiling and physical properties, a canonical correlation analysis (CCA) was conducted. As a result, three typical abnormal features of smiling in the Cleft group compared with the Control group were noted: less upward and backward displacement on the scar area, downward movement of the lower lip, and a greater asymmetric displacement, including greater lateral displacement of the subalar on the cleft side while smiling and greater alar backward displacement on the non-cleft side. The Cleft group also showed greater elastic modulus at the upper lip on the cleft side, suggesting hardened soft tissue at the scar. The CCA showed that this hard scar significantly affected facial displacement, inducing less upward and backward displacement on the scar area and downward movement of the lower lip in patients with UCLP (correlation coefficient = 0.82, p = 0.04); however, there was no significant relationship between greater nasal alar lateral movement and physical properties of the skin at the scar. Based on these results, personalizing treatment options for dysfunction in facial expression generation may require quantification of the 3D facial morphology and physical properties of facial soft tissues.


Assuntos
Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Assimetria Facial/diagnóstico , Imageamento Tridimensional/métodos , Adolescente , Adulto , Pontos de Referência Anatômicos , Estudos de Casos e Controles , Assimetria Facial/etiologia , Expressão Facial , Feminino , Humanos , Masculino , Adulto Jovem
12.
Shanghai Kou Qiang Yi Xue ; 30(1): 1-6, 2021 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-33907770

RESUMO

Judged from the clinical manifestations, etiological mechanisms and jaw morphological structures, malocclusions with mandibular deviation and facial asymmetry are classified into three main categories, i.e., those with mandibular positioning factors, those with mandibular condyle defects, and those with jaw congenital deformities. In the first category, three subtypes, including mandibular rotation caused by dentitional irregularities, by dental compensation and by habitual posturing, are further defined. In the second category, mandibular deviation caused by condylar asymmetrical resorption or hyperplasia are defined as the two subtypes. The third category is further divided into two subtypes, i.e., jaw and facial asymmetry resulting from maxillary or mandibular structural deformities. The prime goal of orthodontic therapy is to displace and restore the deviated mandible to its right position, followed by correction of occlusal intercuspation. As an important procedure of the whole treatment protocol, It is critical to detect and localize the correct mandibular position by manipulation and then register it by wax pattern and articulator transferring. For the cases with mandibular functional elements and condylar asymmetrical length, the treatment modalities include orthopedic repositioning of the mandible by using occlusal and bite plane, SGTB and SGHB therapies; for cases with growth and developmental anomalies, orthognathic intervention should be an optimal solution.


Assuntos
Assimetria Facial , Má Oclusão , Oclusão Dentária , Humanos , Mandíbula , Côndilo Mandibular/diagnóstico por imagem
13.
Comput Methods Programs Biomed ; 205: 106093, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33882417

RESUMO

Background and Objective; Genetic risk factors for childhood cancer may also influence facial morphology. 3D photography can be used in the recognition of differences in face shape among individuals. In previous research, 3D facial photography was used to identify increased facial asymmetry and greater deviation from normal facial morphology in a group of individuals with distinct morphological features who had childhood cancer compared to healthy controls. In this study, we aim to determine whether there is a difference in facial morphology between children with cancer without previously selected morphological features and healthy controls, detected with 3D facial photography. METHODS: Facial 3D photographic images were obtained of children with a newly diagnosed malignancy. The resulting sample comprised 13 different cancer types. Patients were excluded if they had a known genetic cause of the cancer. Patients were compared to healthy controls, matched for sex, age and ethnic background. The degree of asymmetry and overall deviation of an individual's face from an age and sex typical control face were measured. RESULTS: A total of 163 patients of European descent were included. No significant difference in asymmetry between patients and controls could be identified. On average, patients deviated more from an age and sex typical face than the controls. CONCLUSION: This study shows that children with cancer deviate more than controls, possibly suggesting a higher prevalence of genetic anomalies within this group. The results suggest that this is not sufficient to discriminate patients from controls. Further research is necessary to explore the patterns of individual variation among the overall deviation of patients and controls.


Assuntos
Imageamento Tridimensional , Neoplasias , Criança , Face , Assimetria Facial/diagnóstico por imagem , Humanos , Fotografação
14.
Am J Orthod Dentofacial Orthop ; 159(6): 852-865.e5, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33906776

RESUMO

A 13-year-old growing female patient presented with hemimandibular hyperplasia of the right side, Class III hypodivergent skeletal pattern, and severe facial asymmetry. Corrective surgery was deferred until her growth had been completed. When the patient was 16 years old, a low condylectomy was performed on the hyperplastic side of her mandible to prevent its progressive condylar hyperplasia, while simultaneous orthodontic camouflage treatment was performed with the intrusion of the maxillary right posterior teeth using temporary skeletal anchorage devices without additional orthognathic surgery. A low condylectomy caused anterior and lateral open bite after the downward and backward movement of the chin, which improved Class III appearance. The intrusion of the maxillary right posterior teeth followed by compensating extrusion of the mandibular posterior teeth contributed to improve the patient's facial asymmetry with correction of the transverse occlusal plane and lip canting. After 30 months of treatment, an acceptable esthetic outcome and functional occlusion were achieved. The treatment results were well maintained for 1-year retention.


Assuntos
Mordida Aberta , Procedimentos de Ancoragem Ortodôntica , Adolescente , Cefalometria , Estética Dentária , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Feminino , Humanos , Hiperplasia , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Técnicas de Movimentação Dentária , Resultado do Tratamento
16.
Sensors (Basel) ; 21(8)2021 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-33917213

RESUMO

The aim of this study was to investigate the correlation between craniofacial morphology, temporomandibular joint (TMJ) characteristics, and condylar functional movement in patients with facial asymmetry using an up-to-date automated real-time jaw-tracking system. A total of 30 patients with mandibular asymmetry and prognathism were included. Three-dimensional (3D) craniofacial and TMJ morphometric variables were analyzed in images captured using cone-beam computed tomography. Three-dimensional condylar movements were recorded during the opening, protrusion, and laterotrusion of the jaw and divided into those for deviated and non-deviated sides. Overall functional and morphometric variables were compared between the sides by a paired t-test. Pearson's correlation analysis and factor analysis were also performed. As a result, significant differences were found between the sides in morphometric and functional variables. The condylar path length was significantly longer and steeper on the deviated side during protrusion and lateral excursion. TMJ morphometric asymmetry, more so than the craniofacial morphologic asymmetry, seemed to be reflected in the functional asymmetry, representing different correlations between the sides, as supported by factor analysis. This study provides evidence explaining why the asymmetric condylar path remained unchanged even after orthognathic surgery for the correction of craniofacial asymmetry.


Assuntos
Assimetria Facial , Prognatismo , Assimetria Facial/diagnóstico por imagem , Humanos , Imageamento Tridimensional , Mandíbula/diagnóstico por imagem , Côndilo Mandibular/diagnóstico por imagem , Articulação Temporomandibular/diagnóstico por imagem
17.
J Craniofac Surg ; 32(6): 2074-2077, 2021 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-33770029

RESUMO

ABSTRACT: Unilateral cleft lip (UCL) is one of the most common craniofacial deformities. Surgical intervention reconstructs lip and nose anatomy; however, some degree of asymmetry persists after repair. This demonstrates a need for a model for studying and improving outcomes for patients with orofacial clefts. This study's main question was whether there is a significant difference in dynamic facial asymmetry between participants with repaired UCLs and control participants during smiling. Ten pediatric subjects with repaired left UCLs and 12 with no craniofacial diagnoses were recorded performing maximum smiles using a markerless 4D video stereophotogrammetrical system. A facial mesh template containing 884 landmarks was conformed to each initial frame and tracked throughout. Kinetic analysis of smiles was performed by calculating landmark 3D Euclidean distance between frames. Patients with left repaired UCL showed increasing facial asymmetry throughout smiling. Oral commissures, upper, and lower lips demonstrated significantly greater movement on the right side (P < 0.05). Control patients showed facial asymmetry during the first half of smiling, with greater movement on the left side. Displacement difference between right and left was significantly greater at oral commissures and upper lips in patients with repaired ULC compared to control patients. This study provides a highly detailed, quantitative analysis of postoperative UCLs, and help improve outcomes of future repair surgeries.


Assuntos
Fenda Labial , Fissura Palatina , Criança , Fenda Labial/cirurgia , Assimetria Facial/cirurgia , Humanos , Imageamento Tridimensional , Cinética
18.
J Am Dent Assoc ; 152(8): 653-668, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33674034

RESUMO

BACKGROUND AND OVERVIEW: The authors successfully treat a case of hemifacial microsomia involving unilateral condylar hypoplasia using conventional orthodontic techniques followed by long-term retention. CASE DESCRIPTION: A girl aged 10 years and 2 months received a diagnosis of hemifacial microsomia resulting from unilateral condylar hypoplasia. During a growth period, premature incisal contact was abolished. After her growth was complete, she received conventional orthodontic treatment with preadjusted edgewise appliances. After 27 months of multibracket treatment, acceptable occlusion with a class I canine and molar relationship was achieved. The occlusion remained stable throughout the 15-year retention period, although there was a slight facial change. CONCLUSIONS AND PRACTICAL IMPLICATIONS: Early orthodontic management only can have some limitations but could be one of the treatment options for hemifacial microsomia.


Assuntos
Síndrome de Goldenhar , Dente , Criança , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/terapia , Feminino , Seguimentos , Síndrome de Goldenhar/complicações , Síndrome de Goldenhar/diagnóstico por imagem , Síndrome de Goldenhar/terapia , Humanos , Mandíbula
19.
J Craniofac Surg ; 32(2): 768-770, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33705032

RESUMO

ABSTRACT: The aims of this study were to obtain cephalometric data of orbito-zygomatic skeleton using CT axial images and to determine the presence of sexual dimorphism, normal range of facial asymmetry, and the age-related changes.This study used data from 315 CT scan series of skeletally normal subjects (159 males and 156 females) between the ages of 18 to 90. Two different levels of axial sections were used. In total, 11 measurements were performed and 5 of them were bilateral.The mean values and standard deviations were calculated. Gender and age related changes and asymmetry degree were investigated.Mean values of measurements except left medial orbital wall length, right and left medial orbital wall protrusion, right and left lateral orbital wall angle were significantly larger in males for all age groups. Majority of the measurements was formed by the individuals with larger right side. Similar tendencies were observed for craniofacial asymmetry in both sexes and in different age groups. There were no significant craniofacial asymmetries between age and gender groups in terms of the cephalometric measurements. Mid-interorbital distance had a negative correlation (r = -0.11 and P = 0.043) and interzygomatic buttress distance had a positive correlation (r = 0.15 and P = 0.005) with age.Morphological properties such as sexual dimorphism, symmetry, age related changes are important parameters especially for plastic surgery discipline. The authors hope the data can be helpful in diagnosis and surgical treatment of craniofacial diseases, estimating the prognosis and preparation of the facial prosthesis.


Assuntos
Assimetria Facial , Órbita , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Cefalometria , Assimetria Facial/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Órbita/diagnóstico por imagem , Caracteres Sexuais , Tomografia Computadorizada por Raios X , Adulto Jovem
20.
J Orofac Orthop ; 82(4): 226-235, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33725142

RESUMO

PURPOSE: The aim of this study is to compare the symmetry of the facial and dentoalveolar structures of patients with unilateral impacted maxillary canine teeth with a control group of individuals without impacted teeth using three-dimensional face scans. METHODS: The study included 28 patients (10 females, 18 males) with unilateral impacted maxillary canine teeth and 28 patients (15 females, 13 males) without any impacted maxillary canine between 12 and 25 years of age. The 3dMDface™ (3dMD Inc., Atlanta, GA, USA) imaging system was used to obtain 3D face images. 3dMD Vultus® (3dMD Inc., Atlanta, GA, USA) software was used for the measurements. RESULTS: According to the study findings, there were differences in linear measurements and volume measurements between the right and left sides of the face in patients with an impacted canine. However, these differences were not statistically significant. In patients with an impacted canine, surface differences between the right and left halves of the face were not found to be statistically different from the control group. CONCLUSION: There was no difference in the amount of facial asymmetry between patients with unilateral maxillary impacted canine and patients with normal tooth alignment in the control group.


Assuntos
Dente Canino , Dente Impactado , Tomografia Computadorizada de Feixe Cônico , Assimetria Facial , Feminino , Humanos , Masculino , Maxila , Fotogrametria
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