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Orthognathic surgery

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https://www.readbyqxmd.com/read/28337564/lower-face-cephalometry-based-on-quadrilateral-analysis-with-cone-beam-computed-tomography-a-clinical-pilot-study
#1
Adrienn Dobai, Tamás Vizkelety, Zsolt Markella, Adrienne Rosta, Ágnes Kucsera, József Barabás
OBJECTIVE: As most orthognathic surgeries focus on the lower face, the aim of this study was to transfer previously developed two-dimensional cephalometry-which is useful for surgeons in the orthognathic surgery of the lower face-to three-dimensional (3D) cephalometry by using cone-beam computed tomography (CBCT). We selected the quadrilateral lower face analysis developed by the surgeon Di Paolo, who focused only for the lower face and mentioned that data in millimeters are more easy to use than angles for surgeons...
March 23, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28337418/a-three-dimensional-photogrammetric-analysis-of-the-facial-esthetics-of-the-miss-korea-pageant-contestants
#2
Kab Soo Jang, Mohamed Bayome, Jae Hyun Park, Ki-Ho Park, Hong-Beom Moon, Yoon-Ah Kook
OBJECTIVE: The aims of this study were to measure and compare the facial dimensions of the Miss Korea pageant contestants and a selected group of women from the general population by using three-dimensional (3D) image analysis, as well as to compare various facial ratios to the golden ratio within each group. METHODS: Three-dimensional images of 52 Miss Korea pageant contestants (MK group) and 41 young female adults selected from the general population (GP group) were acquired...
March 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28330569/mechanical-stability-of-2-plate-versus-4-plate-osteosynthesis-in-advancement-le-fort-i-osteotomy-an-in-vitro-study
#3
L Pozzer, S Olate, L Cavalieri-Pereira, P Navarro, J R de Albergaría Barbosa
INTRODUCTION: Stability in orthognathic surgery is nowadays considered as efficient and adequate. The objective of this study was to determine and to compare the mechanical resistance to vertical load of a Le Fort I advancement osteotomy stabilized by mean of two different osteosynthesis techniques, one using two 10-hole pre-bent T-shaped plates, the other using four manually bent 4-hole L- and J-shaped plates. MATERIEL AND METHODS: Standardized Le Fort I advancement osteotomies have been made on polyurethane models...
February 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28318923/treatment-outcome-in-orthognathic-surgery-a-prospective-comparison-of-accuracy-in-computer-assisted-two-and-three-dimensional-prediction-techniques
#4
Martin Bengtsson, Gert Wall, Patricia Miranda-Burgos, Lars Rasmusson
The main objective of the present study was to assess the accuracy of two- and three-dimensional prediction techniques in orthognathic surgery. It was also a test of the very planning sequence. The scientific question was how well does the software support the surgeon in his way to find the perfect correction of the facial appearance while normalizing the occlusion? Thirty patients with a class III occlusion were included in this prospective study. Surgical planning with both techniques were undertaken for all patients...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318920/resolution-of-neurosensory-deficit-after-mandibular-orthognathic-surgery-a-prospective-longitudinal-study
#5
Albraa Badr Alolayan, Yiu Yan Leung
OBJECTIVES: To investigate the longitudinal resolution of neurosensory deficit (NSD) and the possible risk factors that might contribute to NSD following mandibular orthognathic procedures. STUDY DESIGN: A prospective longitudinal observational study on patients who had mandibular orthognathic procedures was performed. Standardized neurosensory assessments were performed. The 2 years longitudinal resolution and risk factors of NSD including patients' age and gender, specific mandibular procedures and surgeons' experience were analyzed...
February 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318915/computer-assisted-positioning-of-the-proximal-segment-after-sagittal-split-osteotomy-of-the-mandible-preclinical-investigation-of-a-novel-electromagnetic-navigation-system
#6
Igor Nova, Sebastian Kallus, Moritz Berger, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Jürgen Hoffmann, Hartmut Dickhaus
INTRODUCTION: Modifications of the temporomandibular joint position after mandible osteotomy are reluctantly accepted in orthognathic surgery. To tackle this problem, we developed a new navigation system using miniaturized electromagnetic sensors. Our imageless navigation approach is therefore optimized to avoid complications of previously proposed optical approaches such as the interference with established surgical procedures and the line of sight problem. MATERIAL AND METHODS: High oblique sagittal split osteotomies were performed on 6 plastic skull mandibles in a laboratory under conditions comparable to the operating theatre...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318311/treatment-of-vertical-maxillary-excess-without-open-bite-in-a-skeletal-class-ii-hyperdivergent-patient
#7
Cheol-Ho Paik, Hong-Sik Park, Hyo-Won Ahn
A 20-year-old woman visited the office complaining of a gummy smile and lip protrusion. She was diagnosed with vertical maxillary excess without open bite and skeletal Class II hyperdivergent pattern. She refused the surgical-orthodontic treatment option, although she wanted to correct the gummy smile and retruded chin. Differential intrusion of anterior and posterior teeth in both arches was necessary to maximize the skeletal treatment effects. In the maxilla, one palatal temporary anchorage device (TAD), an archwire with an accentuated curve of Spee, and a transpalatal arch were applied...
March 20, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28316925/reconstruction-of-nongrowing-hemifacial-microsomia-patient-with-custom-made-unilateral-temporomandibular-joint-total-joint-prosthesis-and-orthognathic-surgery
#8
Payam Farzad
A case of hemifacial microsomia in a young male is presented. The ascending ramus and condyle was reconstructed utilizing virtual 3D planning with a custom-made total TMJ device (TMJ Concepts, USA) in combination with conventional orthognathic surgery. The alternative available reconstructive options are discussed and the advantages and disadvantages of the technique selected.
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28299272/three-dimensional-planning-in-craniomaxillofacial-surgery
#9
Josep Rubio-Palau, Alejandra Prieto-Gundin, Asteria Albert Cazalla, Miguel Bejarano Serrano, Gemma Garcia Fructuoso, Francisco Parri Ferrandis, Alejandro Rivera Baró
INTRODUCTION: Three-dimensional (3D) planning in oral and maxillofacial surgery has become a standard in the planification of a variety of conditions such as dental implants and orthognathic surgery. By using custom-made cutting and positioning guides, the virtual surgery is exported to the operating room, increasing precision and improving results. MATERIALS AND METHODS: We present our experience in the treatment of craniofacial deformities with 3D planning. Software to plan the different procedures has been selected for each case, depending on the procedure (Nobel Clinician, Kodak 3DS, Simplant O&O, Dolphin 3D, Timeus, Mimics and 3-Matic)...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28293940/variations-of-the-profile-of-the-nose-of-the-upper-lip
#10
Pierfrancesco Galzignato, Dario Bertossi, Massimo Albanese, Antonio Iurlaro, Umberto Luciano, Pietro Fiorino, Alessandro Rizzini, Daniele De Santis, Alessandro Zangani, Pierfrancesco Nocini
BACKGROUND: The aim of this study is to analyze the path needed to achieve a good aesthetic and functional result in patients treated with orthognathic surgery. METHODS: 73 patients with only III class malocclusion were treated with sagittal split ramus osteotomy (SSRO) and with Le Fort I in only one piece. Through the analysis of anatomical cephalometric tracings, changes in the skeletal base, upper incisor and nose's shape were evaluated. The statistical analysis measurements were calculated for each length and for each angle at T0 (preoperative value) and at T1 (post-operative value)...
March 14, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28293792/bilateral-sagittal-split-osteotomy-parameters-and-correlations-of-postoperative-pain-management
#11
Gregor F Raschke, Winfried Meissner, Andre Peisker, Gabriel Djedovic, Ulrich Rieger, Arndt Guentsch, Marta Gomez Dammeier, Stefan Schultze-Mosgau
OBJECTIVES: Postoperative pain management is of utmost interest for patients undergoing orthognathic surgery. Currently, there is a lack of information regarding process and outcome parameters of postoperative pain management after bilateral sagittal split osteotomy. MATERIALS AND METHODS: In a prospective clinical study, 31 adults were evaluated on the first postoperative day following bilateral sagittal split osteotomy using the standardized questionnaire of the Germany-wide project Quality Improvement in Postoperative Pain Management (QUIPS)...
March 14, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28286399/application-of-4-meta-adhesive-resin-to-the-occlusal-surface-during-surgery-facilitates-postoperative-occlusal-management
#12
Aoki Noriaki, Baba Junichi, Iwai Toshinori, Tohnai Iwai
PURPOSE: Orthognathic surgery is generally used to correct facial deformities and establish functional occlusion. Preoperative orthodontic treatment is important for stabilizing and establishing the postoperative occlusion. However, sufficient preoperative surgical orthodontic treatment might be sometimes difficult in patients with an abnormally shaped maxilla or mandible or severe jaw deformity. METHODS: We performed this technique over 10 patients with jaw deformities after insufficient presurgical orthodontic treatment...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28281597/would-the-introduction-of-the-index-of-orthognathic-functional-treatment-need-ioftn-affect-referrals-and-acceptance-of-people-for-orthognathic-treatment
#13
S Barber, Z Jawad, T Hodge, C Bates
Introduction The Index of Orthognathic Functional Treatment Need (IOFTN) was developed to measure functional difficulties arising from malocclusions related to facial deformity. The IOFTN is not currently being used to determine suitability for orthognathic treatment, however, it is a useful aid for assessing and referring patients and takes into account functional and facial appearance. This paper aims to evaluate the potential impact of introduction of the IOFTN on the future provision of orthognathic services...
March 10, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28280706/comparative-study-of-postoperative-stability-between-conventional-orthognathic-surgery-and-a-surgery-first-orthognathic-approach-after-bilateral-sagittal-split-ramus-osteotomy-for-skeletal-class-iii-correction
#14
Deuk-Hyun Mah, Su-Gwan Kim, Ji-Su Oh, Jae-Seek You, Seo-Yun Jung, Won-Gi Kim, Kyung-Hwan Yu
OBJECTIVES: The purpose of this study is to compare the postoperative stability of conventional orthognathic surgery to a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy (BSSRO). MATERIALS AND METHODS: The study included 20 patients who underwent BSSRO for skeletal class III conventional orthognathic surgery and 20 patients who underwent a surgery-first orthognathic approach. Serial lateral cephalograms were analyzed to identify skeletal changes before surgery (T0), immediately after surgery (T1), and after surgery (T2, after 1 year or at debonding)...
February 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28280704/complications-associated-with-orthognathic-surgery
#15
REVIEW
Young-Kyun Kim
While most patients undergo orthognathic surgery for aesthetic purposes, aesthetic improvements are most often followed by postoperative functional complications. Therefore, patients must carefully decide whether their purpose of undergoing orthognathic surgery lies on the aesthetic side or the functional side. There is a wide variety of complications associated with orthognathic surgery. There should be a clear distinction between malpractice and complications. Complications can be resolved without any serious problems if the cause is detected early and adequate treatment provided...
February 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28278513/il-6-enhances-osteocyte-mediated-osteoclastogenesis-by-promoting-jak2-and-rankl-activity-in-vitro
#16
Qing Wu, Xiaokang Zhou, Danqing Huang, Yingchen Ji, Feiwu Kang
BACKGROUND/AIMS: Evidence suggests that IL-6 affects bone mass by modulating osteocyte communication towards osteoclasts. However, the mechanism by which IL-6 enhances osteocyte-mediated osteoclastogenesis is unclear. We aimed to investigate the inflammatory factors in serum after orthodontic surgery and their relationship between osteocytes and osteoclasts. METHODS: Serum was obtained from 10 orthognathic surgery patients, and inflammatory factors were detected by ELISA...
March 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28277477/partial-glossectomy-as-an-adjunctive-method-to-ortho-surgical-treatment
#17
Ney Robson Bezerra Ribeiro, Leonardo de Freitas Silva, Heitor Fontes da Silva, Erik Neiva Ribeiro de Carvalho Reis, Jair Queiroz de Oliveira Neto, Raimundo Nonato Maia, Manuel de Jesus Rodrigues Mello
The macroglossia is a rare condition, congenital or acquired, characterized by hypertrophy of the lingual muscles that can cause both aesthetic and functional changes such as mandibular prognathism and malocclusion. Diagnosis is through clinical examination. Treatment consists of excision of part of the tongue and different surgical techniques have been described in the literature. The keyhole lingual resection technique has shown satisfactory results in reducing the volume and preservation of the neurovascular bundles of the tongue...
March 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28274035/stability-of-vertical-horizontal-and-angular-parameters-following-superior-repositioning-of-maxilla-by-le-fort-i-osteotomy-a-cephalometric-study
#18
Pruthvi Raj Hanthur Venkategowda, A T Prakash, E T Roy, K Sadashiva Shetty, Surbhi Thakkar, Rajkumar Maurya
INTRODUCTION: The restoration of normal jaw function, optimal facial aesthetics and long term stability are the goals of any orthognathic surgical procedures. During the last two decades, several cephalometric investigations have been reported on the skeletal changes following maxillary surgical procedures. The stability following LeFort I osteotomy and maxillary superior repositioning of the maxilla has not been studied extensively. AIM: This study was aimed at determining the surgical changes brought about by superior repositioning of the maxilla by Le Fort I osteotomy and evaluate the stability of the surgical procedure one year following surgery...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28265473/treatment-of-class-iii-malocclusion-atypical-extraction-protocol
#19
Fernando Pedrin Carvalho Ferreira, Maiara da Silva Goulart, Renata Rodrigues de Almeida-Pedrin, Ana Claudia de Castro Ferreira Conti, Maurício de Almeida Cardoso
The treatment of Angle Class III malocclusion is rather challenging, because the patient's growth pattern determines the success of long-term treatment. Early diagnosis and treatment are still highly discussed issues in orthodontic literature. This type of early intervention has been indicated more frequently in order to eliminate primary etiological factors and prevent an already present malocclusion from becoming severe. However, when a patient is diagnosed in adulthood, manipulation of the bone bases becomes extremely limited, as there is no longer any potential for growth...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28259312/limited-evidence-suggests-that-presurgical-orthodontics-may-not-be-needed-for-orthognathic-surgery-patients
#20
Alyaa M Al-Dohan, Thikriat S Al-Jewair
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Surgery first in orthognathic surgery: a systematic review of the literature. Peiró-Guijarro MA, Guijarro-Martínez R, Hernández-Alfaro F. Am J Orthod Dentofac Orthop 2016;149(4):448-62. SOURCE OF FUNDING: The review received no funding TYPE OF STUDY/DESIGN: Systematic review.
March 2017: Journal of Evidence-based Dental Practice
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