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https://www.readbyqxmd.com/read/28595839/piezosurgery-for-sagittal-split-osteotomy-procedure-duration-and-postoperative-sensory-perturbation
#1
Robert Köhnke, Andreas Kolk, Lan Kluwe, Oliver Ploder
PURPOSE: To evaluate piezosurgery for bilateral sagittal split osteotomy (BSSO) for its duration and inferior alveolar nerve (IAN) perturbation. PATIENTS AND METHODS: In this prospective randomized study, the authors evaluated 100 BSSO procedures in 50 patients. Piezoelectric (group I) and conventional (group II) osteotomies were carried out on each side of the mandible of a patient by 2 specialists. The surgeons had at least 1 year of experience using piezosurgery...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28500875/upper-airway-changes-after-mandibular-setback-and-or-advancement-genioplasty-in-obese-patients
#2
Wen Du, Dongming He, Yiyao Wang, Hanghang Liu, Chuhang Liao, Wei Fei, En Luo
PURPOSE: Orthognathic surgeries, such as bilateral sagittal split ramus osteotomy (BSSO) and genioplasty, can influence the pharyngeal airway space (PAS) and this has been supported by previous studies. The purpose of this study was to assess changes of the PAS in patients with a high body mass index (BMI) likely to have narrow airways before and after setback BSSO with or without advancement genioplasty surgery by 3-dimensional computed tomography. MATERIALS AND METHODS: Thirty-five adults with a BMI of at least 24...
April 19, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28495411/is-low-level-laser-therapy-effective-for-treatment-of-neurosensory-deficits-arising-from-sagittal-split-ramus-osteotomy
#3
Majid Eshghpour, Baratollah Shaban, Farzaneh Ahrari, Mahdi Erfanian, Elaheh Shadkam
PURPOSE: This study investigated the effectiveness of low-level laser therapy (LLLT) for treating neurosensory impairment after bilateral sagittal split osteotomy (BSSO). MATERIALS AND METHODS: This randomized, double-blinded, split-mouth trial included patients requiring BSSO. After surgery, 1 side of each patient was randomly assigned to laser therapy and the other side served as the control. At 24, 48, and 72 hours after surgery, LLLT was accomplished by intraoral application of a 660-nm laser around the surgical site (200 mW, 10 seconds, 2 J, 1...
April 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28493922/comparison-of-the-long-term-clinical-performance-of-a-biodegradable-and-a-titanium-fixation-system-in-maxillofacial-surgery-a-multicenter-randomized-controlled-trial
#4
B Gareb, N B van Bakelen, G J Buijs, J Jansma, J G A M de Visscher, Th J M Hoppenreijs, J E Bergsma, B van Minnen, B Stegenga, R R M Bos
BACKGROUND: Biodegradable fixation systems could reduce or eliminate problems associated with titanium removal of implants in a second operation. AIM: The aim of this study was to compare the long-term (i.e. >5 years postoperatively) clinical performance of a titanium and a biodegradable system in oral and maxillofacial surgery. MATERIALS AND METHODS: The present multicenter Randomized Controlled Trial (RCT) was performed in four hospitals in the Netherlands...
2017: PloS One
https://www.readbyqxmd.com/read/28489659/relationship-between-the-quantity-of-nerve-exposure-during-bilateral-sagittal-split-osteotomy-surgery-and-sensitive-recovery
#5
Paolo Gennaro, Maria Elisa Giovannoni, Niccolò Pini, Ikenna Valentine Aboh, Guido Gabriele, Giorgio Iannetti, Flavia Cascino
AIM AND OBJECTIVES: The purpose of this study was to evaluate how different exposures of the V3 nerves during orthognathic surgery impact neurosensory disturbances. METHODS: The study included 127 patients who underwent either bilateral sagittal split osteotomy (BSSO) or BSSO with maxillary le Fort 1. They were divided into 6 groups, identified by the quantity of V3 nerve exposure. All patients were examined in a pre-op period and again after 1, 3, 6 months post-op...
May 9, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28431477/duration-of-orthognathic-surgical-treatment
#6
Jaakko Paunonen, Mika Helminen, Timo Peltomäki
OBJECTIVE: The objective of this study was to determine the duration of orthognathic-surgical treatment conducted with conventional pre- and post-surgical orthodontic treatment phases. MATERIAL AND METHODS: The study material was comprised of the files of 185 consecutive patients treated in Oral and Maxillofacial Unit, Tampere University Hospital, Finland, in 2007-2014. The files were reviewed and the following data was obtained: gender and age of patients, ICD-10 diagnosis, type of malocclusion, duration of pre- and post-surgical orthodontic treatment and type of operation...
July 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28419845/does-orthognathic-surgery-cause-or-cure-temporomandibular-disorders-a%C3%A2-systematic-review-and-meta-analysis
#7
REVIEW
Essam Ahmed Al-Moraissi, Larry M Wolford, Daniel Perez, Daniel M Laskin, Edward Ellis
PURPOSE: There is still controversy about whether orthognathic surgery negatively or positively affects temporomandibular disorders (TMDs). The purpose of this study was to determine whether orthognathic surgery has a beneficial or deleterious effect on pre-existing TMDs. MATERIALS AND METHODS: A systematic review and meta-analysis were conducted based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We searched 3 major databases to locate all pertinent articles published from 1980 to March 2016...
March 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28399616/orthodontic-surgical-treatment-and-respiratory-function-rhinomanometric-assessment
#8
Guido Galbiati, Cinzia Maspero, Lucia Giannini, Guia C Guenza, Federica Zanoni, Giampietro Farronato
BACKGROUND: Several correlations between morphological and/or positional alterations of the jaws and respiratory functional impairments have been reported. Nasal airway obstruction represents a critical issue with no clearly defined gold standard as for its measurement. Rhinomanometry was adopted by multiple Authors to evaluate whether patients with malocclusion developed respiratory functional changes after an orthodontic-surgical treatment. However, there are contrasting findings in the literature regarding the possibility of improving the respiratory function by means of surgically-assisted rapid palatal expansion (SARPE) or bimaxillary repositioning of the bony bases...
June 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28381373/the-use-of-patient-specific-implants-in-orthognathic-surgery-a-series-of-30-mandible-sagittal-split-osteotomy-patients
#9
Juho Suojanen, Junnu Leikola, Patricia Stoor
PURPOSE: Virtual surgery combined with patient-specific saw and drill guides and osteosynthesis materials are rapidly spreading from reconstructive surgery to orthognathic surgery. Most commercial partners are already providing computer-aided design and computer-aided manufacture (CAD/CAM) wafers and patient-specific saw guides. Clear benefits have been demonstrated for custom-made drill guides combined with individually designed three-dimensional (3D) printed patient-specific implants (PSI) as a reposition and fixation system in Le Fort I osteotomy...
March 3, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28316914/morphometric-analysis-of-prognathic-and-non-prognathic-mandibles-in-relation-to-bsso-sites-using-cbct
#10
Tengku Aszraf Tengku Shaeran, Ramizu Shaari, Shafulizan Abdul Rahman, Mohammad Khursheed Alam, Alauddin Muhamad Husin
BACKGROUND: Bilateral sagittal split osteotomy (BSSO) is the most versatile procedure and adopted by many surgeons to relocate the mandible in patients having mandibular prognathism (MP). Injury to the inferior alveolar nerve (IAN) and unfavorable splits are two surgical complications of BSSO which are associated with mandibular morphology. Uses of cone beam computed tomography (CBCT) in providing 3-D images has gained a wider acceptance in surgical field nowadays. Its advantages are including reduced cost, lesser radiation dose and smaller physical footprint comparing to the conventional computed tomography...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28256278/changes-in-natural-head-position-in-response-to-mandibular-advancement
#11
Xiaozhen Lin, Sean P Edwards
We investigated the change in the natural head position and its relation to the change in the mandibular position in patients with mandibular hypoplasia. Forty-one patients treated by orthognathic surgery were divided into three groups: bilateral sagittal split osteotomy (BSSO) advancement (n=8); BSSO advancement with genioplasty (n=12), and Le Fort I osteotomy with BSSO advancement (n=21). Cone-beam computed tomographic (CT) datasets were collected preoperatively and six weeks postoperatively. The natural head position was measured using the craniocervical angle and the distance from the second vertebra to the frontal plane, and the mandibular position was measured using the craniomandibular angle and the distance from the mandible to the frontal plane...
February 28, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28166135/a-modified-technique-of-mandibular-ramus-sagittal-split-osteotomy-for-prevention-of-inferior-alveolar-nerve-injury-a-prospective-cohort-study-and-outcome-assessment
#12
Peerasak Chortrakarnkij, Daniel Lonic, Hsiu-Hsia Lin, Kazuaki Yamaguchi, Sun-Goo Kim, Lun-Jou Lo
BACKGROUND: Postoperative functional impairment of the inferior alveolar nerve (IAN) has been a common and well-recognized complication. Our study introduced a modified Obwegeser-Dal Pont bilateral sagittal split osteotomy (BSSO) technique and evaluated the subsequent incidence of postoperative neurosensory disturbance of IAN. METHODS: In this prospective cohort study, 57 patients receiving our modified BSSO during orthognathic surgery were enrolled. The technique contained opening the 2 ramus cortices and inserting the osteotome bypassing the IAN to avoid nerve injury...
March 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28157491/intravenous-dexamethasone-administration-before-orthognathic-surgery-reduces-the-postoperative-edema-of-the-masseter-muscle-a-randomized-controlled-trial
#13
Harutsugi Abukawa, Takashi Ogawa, Michihide Kono, Toshiyuki Koizumi, Yoko Kawase-Koga, Daichi Chikazu
PURPOSE: Dexamethasone seems to suppress postoperative swelling. However, the standard administration dose of dexamethasone for bilateral sagittal split osteotomy (BSSO) has not been reported. This study focused on clarifying the most effective dose of dexamethasone for BSSO. MATERIALS AND METHODS: This research was planned as a prospective, randomized controlled, double-blind study. Patients undergoing BSSO were randomly assigned to receive intravenous preoperative dexamethasone under 3 different dose conditions: 16 mg, 8 mg, and 0 mg (control)...
June 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28153564/computer-assisted-surgical-planning-and-simulation-for-unilateral-condylar-benign-lesions-causing-facial-asymmetry
#14
Chuan Lu, Dongmei He, Chi Yang, Dong Huang, Edward Ellis
OBJECTIVE: The purpose of this study was to investigate the best surgical sequence for the treatment of unilateral condylar benign lesions causing facial asymmetry by applying computer-assisted surgical planning and simulation. STUDY DESIGN: Computed tomography (CT) data from 12 patients whose maxillary cant was corrected by maintaining the vertical position of the central incisors and equally intruding the long side of the maxilla and extruding the short side were analyzed by ProPlan CMF 1...
April 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28089388/cortical-bone-thickness-of-the-mandibular-canal-and-implications-for-bilateral-sagittal-split-osteotomy-a-cadaveric-study
#15
L Promma, N Sakulsak, P Putiwat, P Amarttayakong, S Iamsaard, H Trakulsuk, K Hirunyakorn, S Suarbua, Y Wattanaraeungchai
Preoperative delineation of the mandibular canal and surrounding cortical bone thickness is mandatory prior to bilateral sagittal split osteotomy (BSSO). The cortical bone thickness of 101 cadaveric mandibles was measured to define the mandibular canal. The mandibles were cut at the anterior ramus, at the third, second, and first molar, and at the premolar. The cortical bone thickness was measured between the mandibular canal and inferior border, buccal cortex, and lingual cortex at each cutting point. No difference was found between the right and left sides of the mandible, or between males and females, with one exception: males were found to have thicker inferior cortical bone at the premolar site than females...
January 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28065728/are-there-risk-factors-for-osseous-mandibular-inferior-border-defects-after-bilateral-sagittal-split-osteotomy
#16
J P Verweij, J G van Rijssel, M Fiocco, G Mensink, P J J Gooris, J P R van Merkesteyn
PURPOSE: Bone defects of the inferior mandibular border (osseous inferior border defects) can cause unesthetic postoperative outcomes after bilateral sagittal split osteotomy (BSSO). The aim of this study was to estimate the frequency of osseous inferior border defects after BSSO and to identify risk factors for this complication. MATERIALS AND METHODS: This retrospective study included consecutive patients who underwent BSSO for mandibular retrognathia. The primary outcome was the presence/absence of osseous inferior border defects...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27939592/evaluation-of-the-accuracy-of-linear-measurements-on-multi-slice-and-cone-beam-computed-tomography-scans-to-detect-the-mandibular-canal-during-bilateral-sagittal-split-osteotomy-of-the-mandible
#17
B Freire-Maia, V deC Machado, C S Valerio, A L N Custódio, F R Manzi, J L C Junqueira
The aim of this study was to compare the accuracy of linear measurements of the distance between the mandibular cortical bone and the mandibular canal using 64-detector multi-slice computed tomography (MSCT) and cone beam computed tomography (CBCT). It was sought to evaluate the reliability of these examinations in detecting the mandibular canal for use in bilateral sagittal split osteotomy (BSSO) planning. Eight dry human mandibles were studied. Three sites, corresponding to the lingula, the angle, and the body of the mandible, were selected...
March 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27833342/hard-and-soft-tissue-changes-following-maxillary-distraction-osteogenesis-and-mandibular-setback-with-bilateral-sagittal-split-osteotomy
#18
Shilpa S Bawane, Neelam N Andrade
AIMS OF THIS STUDY: (1) To highlight the role of intraoral submerged device in distraction osteogenesis (DO) of patients requiring two jaw surgeries for the correction of severe developmental maxillary hypoplasia (MH) and mandibular prognathism (MP) (2) To analyse the hard and soft tissue changes following maxillary DO and mandibular setback with bilateral sagittal split osteotomy (BSSO) in patients with severe MH and MP requiring two jaw surgeries. MATERIALS AND METHODS: During the period Jan 2004 to Dec 2006, five patients with severe developmental MH along with MP were treated...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27832719/changes-in-posterior-airway-space-and-hyoid-bone-position-after-surgical-mandibular-advancement
#19
Anni Riepponen, Riitta Myllykangas, Jarno Savolainen, Pauli Kilpeläinen, Jari Kellokoski, Riitta Pahkala
OBJECTIVE: To evaluate cephalometric changes in posterior airway space (PAS) and in hyoid bone distance to mandibular plane (MP) 1-3 years after bilateral sagittal split osteotomy (BSSO). MATERIAL AND METHODS: The sample consisted of 36 females and 16 males who underwent mandibular advancement by BSSO. To observe sagittal changes in PAS and in hyoid bone distance to MP both pre- and postoperative cephalograms were analyzed using WinCeph(®) 8.0 software. For the statistical analyses paired T-test and multivariate logistic regression models were used...
January 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/27789268/prevalence-of-surgical-site-infections-following-orthognathic-surgery-a-double-blind-randomized-controlled-trial-on-a-3-day-versus-1-day-postoperative-antibiotic-regimen
#20
RANDOMIZED CONTROLLED TRIAL
Clayton M Davis, Curtis E Gregoire, Ian Davis, Thomas W Steeves
PURPOSE: The purpose of this study was to determine the effect of a 3- versus 1-day antibiotic regimen on the rate of surgical site infection (SSI) in patients undergoing orthognathic surgery at a department of oral and maxillofacial surgery in Halifax, Nova Scotia, Canada. MATERIALS AND METHODS: A prospective, randomized controlled trial was conducted. All patients received 1 day of intravenous antibiotics after surgery. Then, patients were randomly distributed into groups that received 2 days of additional antibiotics (group A) or placebo (group B)...
April 2017: Journal of Oral and Maxillofacial Surgery
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