945 results match your criteria Craniofacial Orthognathic Surgery


Short-term and Long-term Psychological Impact and Quality of Life of Patients Undergoing Orthognathic Surgery.

Biomed J 2021 Jun 9. Epub 2021 Jun 9.

Department of Craniofacial Research Center, Chang Gung Memorial Hospital and College of Medicine, Taoyuan, Taiwan.

Background: Orthognathic Surgery (OGS) is a surgery for patients with dento-facial deformity but not all patients are satisfied with its outcome. The purpose of this study is to find out the short-term and long-term psychological impact and quality-of-life of OGS.

Methods: 77 participants receiving OGS and 32 age and gender-matched controls were enrolled. Read More

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[Evaluation of digital technology for orthognathic surgery in 25 patients].

Shanghai Kou Qiang Yi Xue 2021 Apr;30(2):219-224

Department of Oral and Maxillofacial Surgery, Qingdao University Affiliated Hospital. Qingdao 266000, China.

Purpose: To use three-dimensional reconstruction measurement, preoperative diagnosis, surgical design, surgical simulation, guide plate production, navigation verification and effect evaluation of orthognathic surgery assisted by digital technology, in order to explore more scientific and reasonable programs and procedures of orthognathic surgery.

Methods: Twenty-five patients with congenital dental and maxillofacial deformity were selected as the experimental subjects, craniofacial spiral CT was conducted before surgery and CT data were imported into Mimics 20.0 software to establish a 3D head digital model. Read More

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Outcome of full digital workflow for orthognathic surgery planning in the treatment of asymmetric skeletal class III deformity.

J Formos Med Assoc 2021 Jun 3. Epub 2021 Jun 3.

Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan; Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.

Background/purpose: Studies have reported the advantages of digital imaging-assisted orthognathic surgery planning, but there is scarce information about a full digital planning modality. This study evaluated the 3D cephalometric-based and patient-reported outcomes of a full digital workflow for orthognathic surgery planning in the treatment of asymmetric maxillomandibular disharmony.

Methods: A postoperative 3D image dataset of 30 Taiwanese Chinese patients with asymmetric skeletal Class III deformities who underwent full digital planning for two-jaw surgery were retrieved from the authors' database. Read More

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One-Year Craniofacial Surgery Fellowship at Chang Gung Memorial Hospital.

Authors:
Kishor Bhandari

J Craniofac Surg 2021 May 25. Epub 2021 May 25.

Department of Oral and Maxillofacial Surgery, National Academy of Medical Sciences, Bir Hospital, Kathmandu, Nepal.

Abstract: Residency trainings in oral and maxillofacial surgery, plastic surgery, or otolaryngology do not sufficiently cover all aspects of craniofacial surgery to enable fresh graduates to independently practice as craniofacial surgeons. Fellowship trainings are almost mandatory to gain added skills and knowledge in the subspecialty. There are limited number of fellowship centers around the globe that accept international fellows, provide an excellent hands-on experience, arrange free accommodation and pay stipend to the selected candidates. Read More

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Imaging in Orthodontics.

Dent Clin North Am 2021 Jul 3;65(3):623-641. Epub 2021 May 3.

University of Pennsylvania School of Dental Medicine, 240 South 40th Street, Suite 214, Philadelphia, PA 19104, USA.

Imaging in orthodontics has evolved from cephalometric and extraoral films, manual cephalometric tracings, to digital imaging and intraoral scanners. Software-assisted cephalometric tracings and three-dimensional image analysis have become routine in orthodontic diagnosis and treatment planning. Determination of biologic boundaries of orthodontic treatment and evaluation of temporomandibular joints and airway became part of orthodontic assessment. Read More

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Cleft Lip and Palate: LeFort I Distraction with Halo and Hybrid Internal Maxillary Distractors.

Clin Plast Surg 2021 Jul 8;48(3):391-405. Epub 2021 May 8.

Division of Plastic Surgery, Department of Surgery, Rush Craniofacial Center, Rush University Medical Center, 1725 West Harrison Street, Suite 425 POB 1, Chicago, IL 60612, USA.

Distraction osteogenesis is a viable treatment option for patients with a cleft associated with severe maxillary retrusion. A rigid external distraction device and a hybrid internal maxillary distractor have been used to advance the maxilla allowing for predictable and stable results. These techniques can be applied by itself or as an adjunct to traditional orthognathic procedures. Read More

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Modern Mandibular Distraction Applications in Hemifacial Microsomia.

Clin Plast Surg 2021 Jul 8;48(3):375-389. Epub 2021 May 8.

Division of Plastic Surgery, Department of Surgery, Children's Hospital of Philadelphia, 3401 Civic Center Boulevard, Philadelphia, PA 19014, USA. Electronic address:

Phenotypic severity dictates the timing and type of surgical intervention required. Mandibular distraction in children without respiratory and feeding difficulties remains controversial with regard to long-term mandibular growth outcomes and reducing surgical burden. Early mandibular distraction does not obviate secondary orthognathic surgery at skeletal maturity; it provides improved functional, aesthetic, and psychosocial outcomes, at least in the short term. Read More

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Simultaneous Midface Advancement and Orthognathic Surgery: A Powerful Technique for Managing Midface Hypoplasia and Malocclusion.

Plast Reconstr Surg 2021 Jun;147(6):1074e-1075e

Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.

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Camouflage Treatment for Skeletal Maxillary Protrusion and Lateral Deviation with Classic-Type Ehlers-Danlos Syndrome.

Acta Med Okayama 2021 Apr;75(2):205-212

Department of Orthodontics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences.

We herein report the case of a 19-year-old female with a transverse discrepancy, skeletal Class II malocclusion, severe crowding with concerns of classic-type Ehlers-Danlos syndrome (EDS), aesthetics problems and functional problems. The main characteristics of classic EDS are loose-jointedness and fragile, easily bruised skin that heals with peculiar "cigarette-paper" scars. The anteroposterior and transverse skeletal discrepancies can generally be resolved by maxilla repositioning and mandibular advancement surgery following pre-surgical orthodontic treatment. Read More

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One-splint versus two-splint technique in orthognathic surgery for class III asymmetry: comparison of patient-centred outcomes.

Clin Oral Investig 2021 May 5. Epub 2021 May 5.

Craniofacial Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.

Objectives: Two-jaw orthognathic surgery (OGS) is done using either the one-splint technique with free-hand positioning of the maxillomandibular complex or the two-splint technique with intermediate splints to position the maxilla. It is uncertain which technique achieves better outcomes. This study compares frontal soft tissue symmetry and subjective patient QoL between one-splint and two-splint techniques in skeletal Class III asymmetry patients undergoing OGS with three-dimensional surgical planning. Read More

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Simultaneous Orthognathic Surgery With Asian Double Eyelid Suture Blepharoplasty.

J Craniofac Surg 2021 Apr 29. Epub 2021 Apr 29.

Department of Chemical and Materials Engineering, College of Engineering, Chang Gung University Craniofacial Research Centre, Department of Medical Research, Department of Plastic and Reconstructive Surgery and Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taoyuan, Taiwan Department of Plastic and Reconstructive Surgery, Skin Check Malaysia, Selangor, Malaysia Department of Plastic and Reconstructive Surgery, Xiamen Chang Gung Memorial Hospital, China.

Background: The main objective of contemporary orthognathic surgery is to correct dentofacial deformities. Nonetheless, many adjunct procedures to enhance the esthetic outcome in orthognathic surgical cases have been successfully incorporated to improve patient satisfaction. The authors report our preliminary experience of performing simultaneous orthognathic surgery with Asian double eyelid suture method blepharoplasty in the same surgical setting. Read More

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Automated Real-Time Evaluation of Condylar Movement in Relation to Three-Dimensional Craniofacial and Temporomandibular Morphometry in Patients with Facial Asymmetry.

Sensors (Basel) 2021 Apr 7;21(8). Epub 2021 Apr 7.

Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul 02447, Korea.

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. Read More

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Cheek soft tissue prediction in cleft orthognathic surgery: A 3D computer-assisted investigation with comparative analysis.

J Plast Reconstr Aesthet Surg 2021 Mar 29. Epub 2021 Mar 29.

Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan. Electronic address:

Background: The Le Fort I maxillary advancement and rotational movement have been adopted to treat patients with cleft-related skeletal Class III pattern and anteromedial cheek soft tissue deficiency, but cleft-specific cheek soft tissue prediction data are insufficient. This 3D imaging-based study addressed the issue.

Methods: 3D craniofacial soft tissue and bone models were created from 32 consecutive patients who received computer-aided two-jaw orthognathic surgery for the correction of cleft-related Class III deformity and cheek soft tissue deficiency. Read More

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Correlation between esthetic expectations for orthognathic treatment and psychological characteristics among Chinese adult patients.

Am J Orthod Dentofacial Orthop 2021 Apr 24. Epub 2021 Apr 24.

Stomatology of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China. Electronic address:

Introduction: This study aimed to evaluate the association of esthetic expectations with self-reported personal characteristics, anxiety, depression, self-esteem, oral health-related quality of life, and the Orthognathic Quality of Life Questionnaire (OQLQ) in Chinese adult patients before orthognathic treatment.

Methods: This study involved 213 patients with clinically significant skeletal deformity requiring orthognathic surgery for comprehensive treatment. Each patient completed a series of Chinese version scales, including the self-rating anxiety scale, self-rating depression scale, self-esteem scale, the Oral Health Impact Profile-14 questionnaire, and the OQLQ. Read More

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Role of Navigation in Oral and Maxillofacial Surgery: A Surgeon's Perspectives.

Clin Cosmet Investig Dent 2021 15;13:127-139. Epub 2021 Apr 15.

Department of Oral and Maxillofacial Surgery, Meenakshi Ammal Dental College, Chennai, Tamil Nadu, India.

Surgeries related to the maxillofacial area deal with an intricate network of anatomical structures. With the complexity of the vital structures, it necessitates a surgical team to respect each anatomical boundary. In the past, there was an exceptionally high number of cases with surgical errors. Read More

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Mapping evidence on the effects of gender-affirming hormone therapy on the hard and soft tissues of the craniofacial complex in transgender people: a protocol for a scoping review.

Syst Rev 2021 Apr 14;10(1):109. Epub 2021 Apr 14.

Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Center (Amsterdam UMC), Location AMC, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.

Background: Gender-affirming hormone (GAH) therapy aims to support the transition of transgender people to their gender identity. GAHs can induce changes in their secondary sex characteristics such as the development of breasts in transgender females and increased muscle mass in transgender males. The face and its surrounding tissues also have an important role in gender confirmation. Read More

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Expression of DLX6 Gene in Mandibular Deficiency (Retrognathic Mandible): A Randomized Clinical and Genetic Study.

Cureus 2021 Feb 26;13(2):e13572. Epub 2021 Feb 26.

Pedodontics, Navodaya Dental College and Hospital, Raichur, IND.

Introduction There are various genes that affect craniofacial development and among the important genes that affect jaw development is distal-less homeobox (DLX) 6 genes. The present study was carried out to determine the role of DLX6 gene variations in mandibular deficiency. Methods Thirty subjects having retrognathic mandible were evaluated by clinical examination and assessed using lateral cephalometric radiographs based on cephalometrics for orthognathic surgery (COGS) analysis of hard tissue with N-Pog parameters being less than -13 mm. Read More

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February 2021

Upper airways after mandibular advancement orthognathic surgery: A 4-year follow-up.

Am J Orthod Dentofacial Orthop 2021 Jun 29;159(6):743-749. Epub 2021 Mar 29.

Araras Dental School, Fundação Hermínio Ometto, Araras, São Paulo, Brazil. Electronic address:

Introduction: The purpose of this study was to assess the stability of changes in the upper airways 4 years after orthognathic surgery in patients with skeletal Class II malocclusion.

Methods: A retrospective clinical study was conducted including 33 cone-beam computed tomography images from 11 patients (average age of 35.91 years) followed up longitudinally for 4 years. Read More

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Conformity of the Virtual Surgical Plan to the Actual Result Comparing Five Craniofacial Procedure Types.

Plast Reconstr Surg 2021 Apr;147(4):915-924

From the Division of Plastic and Reconstructive Surgery, Department of Surgery, Yale School of Medicine.

Background: The "accuracy" of virtual surgical planning across multiple procedure types is not known. The authors aimed to compare the planned outcome from virtual surgical planning to the actual postoperative outcome for five craniofacial procedure types performed by a single surgeon: implant cranioplasty, cranial vault remodeling, orthognathic surgery, mandible reconstruction, and mandibular distraction.

Methods: Stereolithography formats were obtained from virtual surgical planning and compared to postoperative computed tomographic scans for consecutive patients who underwent one of the five procedure types. Read More

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Maintaining the space between the mandibular ramus segments during bilateral sagittal split osteotomy does not influence the stability.

J Formos Med Assoc 2021 Mar 25. Epub 2021 Mar 25.

Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan. Electronic address:

Background/purpose: Three-dimensional computer-assisted orthognathic surgery allows to simulate the space between the mandibular ramus segments, i.e. intersegmental gap, for the correction of facial asymmetry. Read More

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Finite element analysis of C-expanders with different vertical vectors of anchor screws.

Am J Orthod Dentofacial Orthop 2021 Jun 21;159(6):799-807. Epub 2021 Mar 21.

Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, South Korea. Electronic address:

Introduction: C-expanders are tissue- and bone-borne maxillary expanders that are anchored by 6 orthodontic miniscrews, 3 on each side of the palate. The purpose of the study was to investigate the effect of C-expanders on the circummaxillary sutures and bucco-palatal axis of teeth in 3-dimensional finite element analyses when anchor screw vectors are different.

Methods: Five expansion models were studied on the basis of the vertical positions of anchor screws on the palate. Read More

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Effect of Le Fort I Maxillary Repositioning on Three-Dimensional Nasal Tip Rotation: A Comparative Study with Implication for the Asian Nose.

Plast Reconstr Surg 2021 04;147(4):903-914

From the Departments of Plastic and Reconstructive Surgery and Craniofacial Orthodontics and the Craniofacial Research Center, Chang Gung Memorial Hospital, Chang Gung University; and the Institute of Plastic and Craniofacial Surgery, SOBRAPAR Hospital.

Background: Le Fort I maxillary repositioning influences nasal morphology. In Asian cultures, upward nasal tip rotation with increased nostril exposure is considered aesthetically unpleasant and can have psychosocial consequences. This three-dimensional imaging-based study evaluated the effect of different Le Fort I maxillary movements on nasal tip rotation. Read More

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The role of double-step advancement genioplasty and bilateral coronoidectomy in Nager Syndrome: A case report.

Spec Care Dentist 2021 Mar 12. Epub 2021 Mar 12.

Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, São Paulo, Brazil.

Aim: To report the surgical management of bilateral mandibular coronoid processes hyperplasia and mandibular retrognathism associated with trismus and convex facial profile in an individual diagnosed with Nager syndrome (NS).

Case Report: A 21 years old female was referred to the Department of Oral and Maxillofacial Surgery, presenting limited mouth opening and an unpleasant convex facial profile. The tomography exhibited hyperplasia of mandibular coronoid processes with no evidence of intracapsular ankylosis of the temporomandibular joint. Read More

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Distraction Osteogenesis in Craniofacial Surgery: Past, Present, and Future.

J Craniofac Surg 2021 05;32(Suppl 3):1221-1228

Department of Plastic Surgery, University of Tennessee Health Science Center, Memphis, TN.

Abstract: Distraction osteogenesis (DO) is considered one of the treatments of choice for the surgical correction of malformations of the craniofacial skeleton. This is due to its ability to generate bone at the distraction site along with the accompanying soft tissue changes, the possibility to combine DO with traditional orthognathic procedures and the successful reported long-term outcomes following its application to various craniofacial deformities. The aim of this review is to present an overview of the literature on the evolution of DO applications in craniofacial surgery through the last 35 years. Read More

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Surgical Planning for Cleft Lip and/or Palate-Induced Moderate-to-Severe Midfacial Hypoplasia.

J Craniofac Surg 2021 Mar-Apr 01;32(2):492-495

Cleft Lip and Palate Department.

Background: Distraction osteogenesis and conventional bimaxillary orthognathic surgery have been performed for the treatment of midfacial hypoplasia for a long time. However, the effect of these 2 techniques on the maxilla, mandible, and whole-facial profile is significantly different. In this study, we aimed to measure the pre- to post-treatment changes in maxillary prominence, mandible size, and facial length and compare them between these 2 techniques to inform selection of the best technique. Read More

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Scandcleft randomized trials of primary surgery for unilateral cleft lip and palate: impact of maxillary dental agenesis on craniofacial growth and dental arch relationship in 8 year olds.

Eur J Orthod 2021 Mar 9. Epub 2021 Mar 9.

Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Rikshospitalet, Norway.

Background: It is suggested that dental agenesis affects maxillary protrusion and dental arch relationship in children with unilateral cleft lip and palate (UCLP). In addition, an association between the need for orthognathic surgery and dental agenesis is reported.

Aim: The aim was to study the impact of maxillary dental agenesis on craniofacial growth and dental arch relationship in 8-year-old children with UCLP. Read More

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Patient satisfaction and quality of life after orthodontic treatment for cleft lip and palate deformity.

Clin Oral Investig 2021 Mar 8. Epub 2021 Mar 8.

Craniofacial Center, Taipei Medical University Hospital, Taipei, Taiwan.

Objectives: Patients with cleft lip-cleft palate (CLP) often require orthodontic treatment, with or without orthognathic surgery. Patient satisfaction is the most important outcome parameter in orthodontic treatment. This study aimed to (1) determine patient satisfaction and quality of life (QoL) after orthodontic treatment and (2) identify associated factors. Read More

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The impact of a surgery-first approach on oral health-related quality of life.

Int J Oral Maxillofac Surg 2021 Feb 25. Epub 2021 Feb 25.

Craniofacial Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan; Graduate Institute of Dental and Craniofacial Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan. Electronic address:

Orthognathic surgery using a surgery-first approach (SFA) has been shown to result in better quality of life (QoL) throughout the treatment duration; however, the effects of gender, age and type of dentofacial deformity on SFA-related QoL remain unknown. In total, 228 consecutive patients underwent SFA for correction of dentofacial deformities (skeletal class III, bimaxillary protrusion and facial asymmetry). We assessed their QoL before surgery and at 1, 6 and 12 months after surgery using the Orthognathic Quality of Life Questionnaire (OQLQ). Read More

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February 2021

Comparative stability and outcomes of two surgical approaches for correction of class III asymmetry with lip or occlusal cant.

Clin Oral Investig 2021 Feb 28. Epub 2021 Feb 28.

College of Medicine, Chang Gung University, Taoyuan, Taiwan.

Objectives: To assess and compare the stability and outcomes of the two surgical approaches for patients with roll asymmetry.

Materials And Methods: A total of 50 adult patients were consecutively recruited for this prospective study. Patients with class III asymmetry and lip or occlusal cant who underwent bimaxillary surgery were grouped according to surgical approach: asymmetric posterior impaction on both sides (API, n = 31) and posterior impaction on one side and posterior extrusion on the other side (PIE, n = 19). Read More

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February 2021

Simultaneous LeFort III and LeFort I Osteotomies in Craniometaphyseal Dysplasia.

Cleft Palate Craniofac J 2021 Feb 10:1055665621990942. Epub 2021 Feb 10.

Division of Oral and Maxillofacial Surgery, University of Southern California, Los Angeles, CA, USA.

Craniometaphyseal dysplasia (CMD) is a rare genetic disease affecting bone metabolism with sclerosis of craniofacial bones. Orthognathic surgery has rarely been described in this patient population due to the bony thickness, making osteotomies challenging. We present a 19-year-old male with CMD with malocclusion, severe midface hypoplasia, and obstructive sleep apnea. Read More

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February 2021