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Orthognathic

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https://www.readbyqxmd.com/read/28439173/surgical-correction-of-brodie-bite-in-adults-a-novel-surgical-splint
#1
P Ratna, B Srinivasan, R Devaki Vijayalakshmi, C Ravanth Kumar
INTRODUCTION: The incidence of telescopic bite is a rare occurrence. Brodie bite malocclusions manifest with severe skeletal and dental transverse, sagittal and vertical problems. MATERIALS AND METHODS: A patient presenting with a telescopic bite and mandibular retrognathism was treated by orthognathic approach. A unique surgical splint was used as an aid in performing the maxillary constriction and segmental osteotomy. CONCLUSION: The telescopic bite was corrected successfully and occlusal rehabilitation was achieved...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28438598/effectiveness-of-corticoid-administration-in-orthognathic-surgery-for-edema-and-neurosensorial-disturbance-a-systematic-literature-review
#2
REVIEW
Valthierre Nunes de Lima, Cleidiel Augusto Aparecido Lemos, Leonardo Perez Faverani, Joel Ferreira Santiago Júnior, Eduardo Piza Pellizzer
PURPOSE: The aim of this systematic review was to evaluate the effect of corticosteroid (CS) administration on edema and neural regeneration in orthognathic surgery. MATERIALS AND METHODS: A systematic literature search was conducted using the PubMed (Medline), Cochrane Library, and Scopus databases. The PICO approach was used, in which patients with skeletal dentofacial deformity composed the population; uni- or bimaxillary orthognathic surgery composed the intervention; administration versus no administration of CSs composed the comparison; and decrease in postoperative edema and neurosensory disorders composed the outcome...
March 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28438443/cone-beam-computed-tomography-assessment-of-the-pterygomaxillary-region-and-palatine-canal-for-le-fort-i-osteotomy
#3
G Q V Oliveira, M A Rossi, T V Vasconcelos, F S Neves, I Crusoé-Rebello
The aim of this study was to evaluate the anatomical linear measurements of the descending palatine canal and the pterygomaxillary fissure for Le Fort I preoperative planning. Seventy-five patients, comprising 46 females (61.3%) and 29 males (39.7%), underwent multi-slice computed tomography examinations performed for preoperative orthognathic surgical planning. The images were categorized according to sex, craniofacial side, and skeletal and craniofacial patterns. The anterior length between the descending palatine canal and the lateral wall of the piriform rim showed a higher mean value for males compared to females (P=0...
April 21, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28438395/motivation-for-orthognathic-treatment-and-anticipated-satisfaction-levels-a-two-centre-cross-national-audit
#4
Raphael Patcas, Susan J Cunningham, Justin Shute, Timothy Lloyd, Joachim A Obwegeser, Lida Arjomand, Sujata Sharma
PURPOSE: This audit investigated factors which motivate patients to seek orthognathic treatment, assessed how confident patients were that they would be satisfied with the outcome of treatment, and explored possible influencing factors. MATERIALS AND METHODS: Questionnaires were distributed to pre-surgical patients at two centres (United Kingdom and Switzerland); questions asked what patients wished to gain from orthognathic treatment and how confident they were that they would be satisfied with treatment outcome...
March 27, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28436308/the-different-effects-of-intraoral-vertical-ramus-osteotomy-ivro-and-sagittal-split-ramus-osteotomy-ssro-on-mandibular-border-movement
#5
Hiroki Komori, Noriaki Kawanabe, Tomoki Kataoka, Yui Kato, Atsuro Fujisawa, Takashi Yamashiro, Hiroshi Kamioka
OBJECTIVES: This study investigated the different effects of intraoral vertical ramus osteotomy (IVRO) and sagittal split ramus osteotomy (SSRO) on mandibular border movement. METHODS: The participants included 22 patients receiving IVRO and 22 patients receiving SSRO who were treated at Okayama University Hospital. Their mandibular border movement was evaluated in three dimensions with 6° of freedom using an optical recording system. RESULTS: A strong correlation between condylar and lower incisor movement was observed during maximum jaw protrusion and laterotrusion...
April 23, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28432489/design-development-and-clinical-validation-of-computer-aided-surgical-simulation-system-for-streamlined-orthognathic-surgical-planning
#6
REVIEW
Peng Yuan, Huaming Mai, Jianfu Li, Dennis Chun-Yu Ho, Yingying Lai, Siting Liu, Daeseung Kim, Zixiang Xiong, David M Alfi, John F Teichgraeber, Jaime Gateno, James J Xia
PURPOSE: There are many proven problems associated with traditional surgical planning methods for orthognathic surgery. To address these problems, we developed a computer-aided surgical simulation (CASS) system, the AnatomicAligner, to plan orthognathic surgery following our streamlined clinical protocol. METHODS: The system includes six modules: image segmentation and three-dimensional (3D) reconstruction, registration and reorientation of models to neutral head posture, 3D cephalometric analysis, virtual osteotomy, surgical simulation, and surgical splint generation...
April 21, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28431477/duration-of-orthognathic-surgical-treatment
#7
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...
April 21, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28428952/usefulness-and-capability-of-three-dimensional-full-high-definition-movies-for-surgical-education
#8
M Takano, K Kasahara, K Sugahara, A Watanabe, S Yoshida, T Shibahara
BACKGROUND: Because of changing surgical procedures in the fields of oral and maxillofacial surgery, new methods for surgical education are needed and could include recent advances in digital technology. Many doctors have attempted to use digital technology as educational tools for surgical training, and movies have played an important role in these attempts. We have been using a 3D full high-definition (full-HD) camcorder to record movies of intra-oral surgeries. METHOD: The subjects were medical students and doctors receiving surgical training who did not have actual surgical experience (n = 67)...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28425832/use-of-clear-aligners-in-open-bite-cases-an-unexpected-treatment-option
#9
Aldo Giancotti, Francesco Garino, Gianluca Mampieri
In open bite case treatments, a proper diagnostic differentiation is essential in determining the appropriate corrective procedures. Dental open bites are generally more responsive to treatment with orthodontics alone, whereas skeletal open bites often require a combination of orthodontics and orthognathic surgery. Patient selection and treatment principles for non-surgical open bite treatment routinely include fixed appliances both labial or lingual. However, removable clear aligners have gained a consistent popularity in the treatment of complex cases including open bite malocclusions...
April 20, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28419845/does-orthognathic-surgery-cause-or-cure-temporomandibular-disorders-a%C3%A2-systematic-review-and-meta-analysis
#10
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/28412180/computational-fluid-dynamics-study-of-the-pharyngeal-airway-space-before-and-after-mandibular-setback-surgery-in-patients-with-mandibular-prognathism
#11
Y Yajima, M Oshima, T Iwai, H Kitajima, S Omura, I Tohnai
The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics...
April 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28410841/contemporary-surgical-management-of-hypodontia
#12
REVIEW
J Breeze, M S Dover, R W Williams
Hypodontia is the term most commonly applied to the condition in which teeth congenitally fail to develop. Such cases differ from teeth that have been lost early or that have failed to erupt, although their initial presentation may be similar and therefore not recognised. The range of missing teeth and their physical and psychological results is large, and the difference in complexity in the management of a patient with isolated hypodontia compared with one with oligodontia or anodontia together with skeletal and orthognathic discrepancies should not be underestimated...
April 11, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28409207/the-precise-repositioning-instrument-for-genioplasty-and-a-three-dimensional-printing-technique-for-treatment-of-complex-facial-asymmetry
#13
Lin Wang, Dan Tian, Xiumei Sun, Yanju Xiao, Li Chen, Guomin Wu
BACKGROUND: Facial asymmetry is very common in maxillofacial deformities. It is difficult to achieve accurate reconstruction. With the help of 3D printing models and surgical templates, the osteotomy line and the amount of bone grinding can be accurate. Also, by means of the precise repositioning instrument, the repositioning of genioplasty can be accurate and quick. In this study, we present a three-dimensional printing technique and the precise repositioning instrument to guide the osteotomy and repositioning, and illustrate their feasibility and validity...
April 13, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28403134/early-computer-aided-design-computer-aided-modeling-planned-le-fort-i-advancement-with-internal-distractors-to-treat-severe-maxillary-hypoplasia-in-cleft-lip-and-palate
#14
Catherine S Chang, Jordan Swanson, Jason Yu, Jesse A Taylor
Traditionally, maxillary hypoplasia in the setting of cleft lip and palate is treated via orthognathic surgery at skeletal maturity, which condemns these patients to abnormal facial proportions during adolescence. The authors sought to determine the safety profile of computer-aided design/computer-aided modeling (CAD/CAM) planned, Le Fort I distraction osteogenesis with internal distractors in select patients presenting at a young age with severe maxillary retrusion. The authors retrospectively reviewed our "early" Le Fort I distraction osteogenesis experience-patients performed for severe maxillary retrusion (≥12 mm underjet), after canine eruption but prior to skeletal maturity-at a single institution...
April 11, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28403023/incidence-of-le-fort-surgery-in-a-mature-cohort-of-patients-with-cleft-lip-and-palate
#15
Cecilia Dalle Ore, Anna Schoenbrunner, Michael Brandel, Nicola Kronstadt, Joyce McIntyre, Marilyn Jones, Amanda Gosman
Primary repair of cleft lip and palate occurs early in life, but ideal timing of these interventions remains controversial. Prior research has indicated that a later palate repair may improve patients' midfacial growth long term, whereas optimal timing of lip repair to maximize midfacial growth has not been identified.The purpose of this study is to analyze a large, diverse cohort of patients with cleft lip and palate to determine whether timing of primary palate repair and primary lip repair contributed significantly to subsequent orthognathic surgery...
April 11, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28402422/introduction-and-assessment-of-orthognathic-information-clinic
#16
Nina Bergkulla, Heidi Hänninen, Outi Alanko, Martti Tuomisto, Jukka Kurimo, Aimo Miettinen, Anna-Liisa Svedström-Oristo, Susan Cunningham, Timo Peltomäki
Background/Objectives: Orthognathic treatment is routine practice to rehabilitate severe malocclusions and dentofacial deformities. Because orthognathic treatment is elective, patient's involvement in deciding whether to proceed with treatment is vital. Interaction and communication between patient and treating team plays a key role in achieving post-treatment satisfaction. To achieve satisfaction, an orthognathic 'information clinic' for prospective orthognathic patients was established at Oral and Maxillofacial Unit, Tampere University Hospital, Finland...
April 11, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28399616/orthodontic-surgical-treatment-and-respiratory-function-rhinomanometric-assessment
#17
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. NAO (Nasal airway obstruction) represents a big deal with no clearly defined "gold- standard" in 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 literature regarding the possibility of improving respiratory function by means of SARPE or bimaxillary repositioning of the bony bases...
April 11, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28399025/incidence-of-le-fort-surgery-in-a-mature-cohort-of-patients-with-cleft-lip-and-palate
#18
Cecilia Dalle Ore, Anna Schoenbrunner, Michael Brandel, Nicola Kronstadt, Joyce McIntyre, Marilyn Jones, Amanda Gosman
Primary repair of cleft lip and palate occurs early in life, but ideal timing of these interventions remains controversial. Prior research has indicated that a later palate repair may improve patients' midfacial growth long term, whereas optimal timing of lip repair to maximize midfacial growth has not been identified.The purpose of this study is to analyze a large, diverse cohort of patients with cleft lip and palate to determine whether timing of primary palate repair and primary lip repair contributed significantly to subsequent orthognathic surgery...
May 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28398167/clinical-protocol-for-occlusal-adjustment-rationale-and-application
#19
Roger A Solow
BACKGROUND: Occlusal adjustment can optimize the result of orthodontics, orthognathic surgery, and comprehensive restoration, and resolve adverse forces to the dentition that affect the entire masticatory system. Mounted diagnostic casts and computerized occlusal analysis offer complementary advantages for evaluating occlusal problems. Predictable occlusal adjustment is facilitated by precise, measured documentation of occlusal force by computerized occlusal analysis. CLINICAL PRESENTATION: A conservative, structural correction of a pronounced, chronic occlusal problem by additive and subtractive occlusal adjustment was performed after a previous failed occlusal adjustment...
April 11, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28392311/two-examples-of-indication-specific-radiation-dose-calculations-in-dental-cbct-and-multidetector-ct-scanners
#20
Andreas Stratis, Guozhi Zhang, Xochitl Lopez-Rendon, Constantinus Politis, Robert Hermans, Reinhilde Jacobs, Ria Bogaerts, Eman Shaheen, Hilde Bosmans
PURPOSE: To calculate organ doses and estimate the effective dose for justification purposes in patients undergoing orthognathic treatment planning purposes and temporal bone imaging in dental cone beam CT (CBCT) and Multidetector CT (MDCT) scanners. METHODS: The radiation dose to the ICRP reference male voxel phantom was calculated for dedicated orthognathic treatment planning acquisitions via Monte Carlo simulations in two dental CBCT scanners, Promax 3D Max (Planmeca, FI) and NewTom VGi evo (QR s...
April 6, 2017: Physica Medica: PM
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