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https://www.readbyqxmd.com/read/28071714/three-dimensional-surgical-simulation-improves-the-planning-for-correction-of-facial-prognathism-and-asymmetry-a-qualitative-and-quantitative-study
#1
Cheng-Ting Ho, Hsiu-Hsia Lin, Eric J W Liou, Lun-Jou Lo
Traditional planning method for orthognathic surgery has limitations of cephalometric analysis, especially for patients with asymmetry. The aim of this study was to assess surgical plan modification after 3-demensional (3D) simulation. The procedures were to perform traditional surgical planning, construction of 3D model for the initial surgical plan (P1), 3D model of altered surgical plan after simulation (P2), comparison between P1 and P2 models, surgical execution, and postoperative validation using superimposition and root-mean-square difference (RMSD) between postoperative 3D image and P2 simulation model...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28060199/management-of-skeletal-class-ii-malocclusion-by-surgery-first-approach
#2
Gagan Deep Kochar, Ashish Chakranarayan, Sanjay M Londhe, Bensy Varghese, Balakrishna Jayan, Sukhbir S Chopra, Rajat Mitra, Munish Verma
Surgery-first approach (SFA) has been a paradigm shift in the field of orthognathic surgery. Majority of the published cases that have been managed by this approach are of skeletal class III. This communication describes a patient of 18-year-old male diagnosed with skeletal class II malocclusion due to mandibular retognathism. He was managed with SFA and was using skeletal anchorage system to prevent postsurgical relapse. Bilateral saggital split ramus osteotomy was carried out to achieve the mandibular advancement of 7 mm...
January 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28060091/midface-distraction-osteogenesis-using-a-modified-external-device-with-elastic-distraction-for-crouzon-syndrome
#3
Haizhou Tong, Lei Liu, Xiaojun Tang, Tao Song, Ningbei Yin, Zhiyong Zhang, Zhenmin Zhao
PURPOSE: Midface distraction osteogenesis has been popularized for the correction of midface hypoplasia associated with exophthalmos and obstructive sleep apnea in patients with Crouzon syndrome. The purpose of this study was to present the method of utilizing the modified external device with elastic distraction for the midface advancement in Crouzon syndrome, and the clinical outcomes and skeletal changes were analyzed. METHODS: Five consecutive patients with Crouzon syndrome underwent Le Fort III osteotomy with midface advancement using a modified external device with elastic distraction...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28057402/consultation-with-a-specialized-pain-clinic-reduces-pain-after-oral-and-maxillofacial-surgery
#4
Eva-Maria Dietrich, Norbert Griessinger, Friedrich Wilhelm Neukam, Tilo Schlittenbauer
PURPOSE: Postoperative pain management is important for improved patient care. Our primary objective was to investigate the effect of analgesic treatment adaptation by the pain clinic on postoperative pain relief at an oral and maxillofacial surgery department. Additionally, we aimed to present patients' pain characteristics and the administered analgesic treatment. MATERIALS AND METHODS: A total of 128 patients treated at our clinic in the period 2012-2015 who required analgesic treatment adaptation by our pain clinic were included...
December 14, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28049608/electromagnetic-navigated-positioning-of-the-maxilla-after-le-fort-i-osteotomy-in-preclinical-orthognathic-surgery-cases
#5
Moritz Berger, Igor Nova, Sebastian Kallus, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Robin Seeberger, Jürgen Hoffmann, Hartmut Dickhaus
OBJECTIVES: Inaccuracies in orthognathic surgery can be caused during face-bow registration, model surgery on plaster models, and intermaxillary splint manufacturing. Electromagnetic (EM) navigation is a promising method for splintless digitized maxillary positioning. STUDY DESIGN: After performing Le Fort I osteotomy on 10 plastic skulls, the target position of the maxilla was guided by an EM navigation system. Specially implemented software illustrated the target position by real-time multistage colored three-dimensional imaging...
October 14, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28045827/bone-substitutes-in-le-fort-i-osteotomy-to-promote-bone-union-and-skeletal-stability
#6
Leonardo Matos Santolim Zanettini, Guilherme Genehr Fritscher, Ricardo Giacomini De Marco, Fernando de Oliveira Andriola, Rogério Miranda Pagnoncelli
Maxillary advancement by Le Fort I osteotomy has become the standard procedure to restore function and facial esthetics, correct skeletal and occlusal discrepancies, and treat obstructive sleep apnea in patients with facial deformities. Incomplete ossification between the bone segments at the jaw osteotomy site has proven to be a major problem in these patients. There are several studies in the literature that address orthognathic surgery, but only a limited number that discuss the use of graft materials in maxillary osteotomy...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28043746/can-a-surgery-first-orthognathic-approach-reduce-the-total-treatment-time
#7
W S Jeong, J W Choi, D Y Kim, J Y Lee, S M Kwon
Although pre-surgical orthodontic treatment has been accepted as a necessary process for stable orthognathic correction in the traditional orthognathic approach, recent advances in the application of miniscrews and in the pre-surgical simulation of orthodontic management using dental models have shown that it is possible to perform a surgery-first orthognathic approach without pre-surgical orthodontic treatment. This prospective study investigated the surgical outcomes of patients with diagnosed skeletal class III dentofacial deformities who underwent orthognathic surgery between December 2007 and December 2014...
December 30, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28042256/are-temporary-anchorage-devices-truly-effective-in-the-treatment-of-skeletal-open-bites
#8
Hakan Turkkahraman, Mehmet Sarioglu
OBJECTIVE: The aims of this study were to evaluate the effects of temporary anchorage devices (TADs) in the treatment of skeletal open bites and to compare the results with untreated controls. MATERIALS AND METHODS: A total of forty patients with skeletal anterior open bites were assigned to two groups of twenty each. The mean chronological age for the treatment group (14 female, 6 male) was 16.68 ± 2.80 years old, compared with 16.63 ± 2.83 years old for the control group (11 female, 9 male)...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28039546/the-relationship-between-lateral-displacement-of-the-mandible-and-scoliosis
#9
Azusa Nakashima, Hiroyuki Nakano, Tomohiro Yamada, Kazuya Inoue, Goro Sugiyama, Wataru Kumamaru, Yasumichi Nakajima, Tomoki Sumida, Takeshi Yokoyama, Katsuaki Mishiama, Yoshihide Mori
OBJECTIVES: Idiopathic scoliosis is an orthopaedic disease of childhood, with onset and progress occurring until adolescence. Here, the relationship between lateral displacement of the mandible and scoliosis was analysed quantitatively. METHODS: Seventy-nine non-syndromic Japanese patients (18 men, 61 women), who were diagnosed with jaw deformities and underwent surgical orthognathic treatment at Kyushu University Hospital from January 2011 to August 2014, were enrolled...
December 30, 2016: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28034574/orthodontic-camouflage-versus-orthognathic-surgery-for-class-iii-deformity-comparative-cephalometric-analysis
#10
P Martinez, C Bellot-Arcís, J M Llamas, R Cibrian, J L Gandia, V Paredes-Gallardo
The objective of this study was to compare different cephalometric variables in adult patients with class III malocclusions before and after treatment, in order to determine which variables are indicative of orthodontic camouflage or orthognathic surgery. The cases of 156 adult patients were assessed: 77 treated with orthodontic camouflage and 79 treated with orthodontics and orthognathic surgery. The following cephalometric variables were measured on pre-treatment (T1) and post-treatment (T2) lateral cephalograms: sella-nasion-A-point (SNA), sella-nasion-B-point (SNB), and A-point-nasion-B-point (ANB) angles, Wits appraisal, facial axis angle, mandibular plane angle, upper and lower incisor inclination, and inter-incisal angle...
December 26, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28028419/the-effect-of-orthognathic-surgery-on-osteoprotegerin-as-immunological-caliper-of-bone-healing
#11
Sara Soliman, Mamdouh Ahmed
BACKGROUND: Osteoprotegerin (OPG) is considered to be the cytokine that plays an important role in the healing process. OPG regulates bone cell biology, osteoblast-osteoclast, bone-immune cross-talk and maintenance of bone mass. It plays an important role in the development, induction, and repair of bone. Orthognathic surgery as multiples segmental osteotomies has been taken as a model surgery to assess the changes in osteoprotegerin levels in the post-operative bone healing period. AIM: The aim of the study was to evaluate OPG as immunological caliper of bone healing...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28027997/impact-on-the-upper-airway-space-of-different-types-of-orthognathic-surgery-for-the-correction-of-skeletal-class-iii-malocclusion-a-systematic-review-and-meta-analysis
#12
REVIEW
Jinlong He, Yunji Wang, Hongtao Hu, Qian Liao, Weiyi Zhang, Xuerong Xiang, Xiaoping Fan
OBJECTIVE: This study is aimed at assembling, through a systematic review and meta-analysis, scientific evidence related to the effects of mandibular setback (MdS) surgery and bimaxillary surgery for the correction of Class III malocclusion on the cross-sectional area (CSA) and volume of the upper airway as assessed using CT. METHODS: An electronic search was conducted on Cochrane Library, EMBASE, PubMed, Scopus and Web of Science up to June 20, 2016. The inclusion criteria were prospective or retrospective studies, with the aim of comparing the impact on the upper airway space of orthognathic surgery for the treatment of the skeletal class III malocclusion...
December 24, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/28024773/comprehensive-treatment-approach-for-condylar-hyperplasia-and-mandibular-crowding-with-custom-lingual-braces-and-2-jaw-surgery
#13
Panagiotis G Kyteas, W Stuart McKenzie, Peter D Waite, Chung H Kau
We report on the successful treatment of a 32-year-old woman with condylar hyperplasia and severe mandibular crowding. In addition, her maxilla was canted to the right, her mandibular midline and chin point deviated to the left, and her maxillary canines were missing. The treatment plan included (1) aligning and leveling the teeth in both arches, (2) correcting overbite and overjet, (3) performing LeFort I osteotomy and bilateral split osteotomies, and (4) correcting the malocclusion postsurgically. The orthodontic treatment was performed with custom lingual braces and clear brackets, and virtual surgical planning techniques were used to plan the orthognathic surgery...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28009052/non-pharmacological-interventions-for-alleviating-pain-during-orthodontic-treatment
#14
REVIEW
Padhraig S Fleming, Hardus Strydom, Christos Katsaros, Lci MacDonald, Michele Curatolo, Piotr Fudalej, Nikolaos Pandis
BACKGROUND: Pain is prevalent during orthodontics, particularly during the early stages of treatment. To ensure patient comfort and compliance during treatment, the prevention or management of pain is of major importance. While pharmacological means are the first line of treatment for alleviation of orthodontic pain, a range of non-pharmacological approaches have been proposed recently as viable alternatives. OBJECTIVES: To assess the effects of non-pharmacological interventions to alleviate pain associated with orthodontic treatment...
December 23, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28005826/porous-polyethylene-implant-as-aesthetic-complement-in-orthognathic-surgery
#15
Juliana Dreyer da Silva de Menezes, Lucas Borin Moura, Renato Parsekian Martins, Eduardo Hochuli-Vieira
Porous polyethylene implants have been used as an alternative in the treatment of patients with zygomatic and paranasal projections deficiency. These implants promote a facial rejuvenating effect due to the attenuation of the nasal and chin prominences. The advantages of porous polyethylene include biocompatibility, dimensional stability, easy adaptation and fixation, low complication rate, and its availability in different sizes and shapes. A 27-year-old woman presenting vertical deficiency associated with midface hypoplasia was treated with orthognathic surgery...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005777/virtual-surgery-planning-in-orthomorphic-correction-of-mandibular-dysmorphology
#16
Harsh Pipalia, Praveen Ganesh, Samarth Shetty, Paul C Salins, Rohan Raut, Kiran Kumar Boyina
Three-dimensional virtual surgery programs are widely available for orthognathic surgery. The advent of imaging software programs has proved to be useful for diagnosis, treatment planning, outcome measurement, and three-dimensional surgical simulation. Complex maxillofacial malformations continue to present challenges in analysis and correction beyond modern technology. Orthomorphic correction for mandibular dysmorphology refers to basal bone movement without any change in dental component. The purpose of this paper is to present a virtual surgery planning for surgeons to perform the orthomorphic surgery with precision and quantification...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005762/jaw-in-a-day-state-of-the-art-in-maxillary-reconstruction
#17
Christopher M Runyan, Vishal Sharma, David A Staffenberg, Jamie P Levine, Lawrence E Brecht, Leonard H Wexler, David L Hirsch
BACKGROUND: Reconstruction of maxillary defects following tumor extirpation is challenging because of combined aesthetic and functional roles of the maxilla. One-stage reconstruction combining osseous free flaps with immediate osseointegrated implants are becoming the standard for mandibular defects, and have similar potential for maxillary reconstruction. METHODS: A woman with maxillary Ewing sarcoma successfully treated at age 9 with neoadjuvant chemotherapy, right hemimaxillectomy, and obturator prosthetic reconstruction presented for definitive reconstruction, complaining of poor obturator fit, and hypernasality...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005730/correction-of-a-long-face-simultaneous-reduction-of-the-upper-lip-using-a-modified-endonasal-technique-and-le-fort-i-osteotomy-superior-impaction
#18
Seungil Chung, Sanghoon Park
BACKGROUND: Although Le Fort I osteotomy superior impaction during bimaxillary surgery is beneficial for patients with a long face, achieving satisfactory results can be challenging due to the redundant upper lip. However, upper-lip reduction has rarely been performed during or following bimaxillary surgery because of the difficulty in estimating the required amount of cutaneous resection needed and the apparent horizontal scars left behind. Therefore, no simultaneous cutaneous upper-lip reduction with orthognathic surgery has been reported...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28004246/reproducibility-of-three-dimensional-posterior-cranial-base-angles-using-low-dose-computed-tomography
#19
R Olszewski, L Frison, N Schoenarts, R H Khonsari, G A Odri, F Zech, H Reychler
OBJECTIVES: One of the key aspects of three-dimensional (3D) craniofacial cephalometry is the measurement of posterior cranial base angle as this area is deeply involved in craniofacial development. The purpose of our retrospective study was to define the best reproducible 3D posterior cranial base angles among five 3D angles transposed from 2D cephalometry (Cousin, BL1 of Ross and Ravosa, Bjork, Delaire, CBA4 of Liberman) and seven 3D angles based on physical anthropology studies and on new concepts (R1 to R7)...
December 21, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27995122/three-dimensional-morphometric-analysis-of-mandibule-in-coronal-plane-after-bimaxillary-rotational-surgery
#20
Sung-Tak Lee, Na-Rae Choi, Jae-Min Song, Sang-Hun Shin
BACKGROUND: The aim of this report is to present a new reference for aesthetic mandible surgery using three-dimensional cone-beam computed tomography-based treatment planning for orthognathic surgery which can be implemented in surgical planning and perioperative procedure. METHODS: To make an objective standard for evaluating aesthetic mandibular outline, we make an aesthetic scoring criteria with consideration of asymmetry, broad mandibular border line, and prominent mandibular angle...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
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