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Mandibular Advancement

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https://www.readbyqxmd.com/read/28732224/three-dimensional-changes-in-the-upper-airway-of-skeletal-class-iii-patients-after-different-orthognathic-surgical-procedures
#1
Yuxue Yang, Kai Yang, Ying Zhao
PURPOSE: We hypothesized that 3-dimensional changes in the upper airway of patients with skeletal Class III malocclusion are different after mandibular setback and maxillary advancement (MSMA) compared with mandibular setback (MS) and that upper airway changes and the amount of jaw movement are correlated. PATIENTS AND METHODS: Skeletal Class III patients who underwent MS surgery or MSMA surgery were included in this retrospective cohort study. Cone beam computed tomography scans were acquired before and 3 months after surgery...
June 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28721528/soft-tissue-profile-changes-after-functional-mandibular-advancer-or-herbst-appliance-treatment-in-class-ii-patients
#2
Jan Hourfar, Jörg Alexander Lisson, Ulrich Gross, Linda Frye, Gero Stefan Michael Kinzinger
OBJECTIVE: The objective of the present study is to compare the effects on soft tissue profile in class II patients after treatment with either "Functional Mandibular Advancer" (FMA) or Herbst appliance. MATERIALS AND METHODS: The study included n = 42 patients treated with either FMA (n = 21) or Herbst appliance (n = 21) by the same experienced orthodontist. The treatment followed a single-step advancement protocol. Lateral cephalograms were analyzed through a set of customized measurements...
July 18, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28714534/adjustable-thermoplastic-oral-appliance-versus-positive-airway-pressure-for-obstructive-sleep-apnea
#3
Wish Banhiran, Paraya Assanasen, Cherdchai Nopmaneejumrudlers, Nongyoaw Nujchanart, Wimontip Srechareon, Cheerasook Chongkolwatana, Choakchai Metheetrairut
OBJECTIVES/HYPOTHESIS: To compare outcomes of continuous positive airway pressure (CPAP) and the adjustable thermoplastic mandibular advancement splint (AT-MAS) for obstructive sleep apnea treatment. STUDY DESIGN: Randomized crossover, noninferiority, tertiary center setting. METHODS: Fifty patients with a mean age of 49.5 ± 10.6 years were enrolled. Inclusion criteria were age ≥18 years, apnea-hypopnea index (AHI) ≥5 events/hour, and oxygen saturation ≥70%...
July 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28713734/treatment-of-micrognathia-by-intraoral-distraction-osteogenesis-a-prospective-study
#4
M Baskaran, S Gidean Arularasan, T K Divakar, Rohini Thirunavukkarasu
PURPOSE: Maxillofacial deformities are always psychologically and physically distressing to the patients and is also challenging to the treating surgeons. The term Micrognathia means a "small jaw". True micrognathia, where the maxilla or the mandibular skeleton does not grow to the full size can be congenital or acquired. Distraction osteogenesis also called as callus distraction or callostasis or osteodistraction or distraction histogenesis is a biological process of regenerating newly formed bone and adjacent soft tissue by a gradual and controlled traction of surgically separated bone segments...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28708910/influence-of-the-posterior-mandible-ridge-morphology-on-virtual-implant-planning
#5
German O Gallucci, Shirin Khoynezhad, Alfa I Yansane, Jacob Taylor, Daniel Buser, Bernard Friedland
PURPOSE: The purpose of this study was to examine the anatomy of the mandibular posterior region to develop an anatomical categorization for implant-prosthodontic planning. MATERIALS AND METHODS: Using cone beam computed tomography scans, 313 cross-sectional views of edentulous posterior mandibular sites were evaluated with respect to the anatomical ridge morphology. Virtual implant planning was performed, and the need for bone grafting was assessed. The level of complexity for planning implants in those positions was assessed...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28697347/immediate-reconstruction-and-dental-rehabilitation-of-segmental-mandibular-defects-description-of-a-novel-technique
#6
Salam O Salman, Rui P Fernandes, Sundeep R Rawal
The aim of this report is to present a new technique using current technologic advances for immediate reconstruction and dental rehabilitation of segmental mandibular defects with a screw-retained prosthesis. One case is reviewed and a detailed review of surgical and prosthetic techniques used is presented.
June 23, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28695399/the-long-term-effects-of-mandibular-advancement-splint-on-cardiovascular-fitness-and-psychomotor-performance-in-patients-with-mild-to-moderate-obstructive-sleep-apnea-a-prospective-study
#7
Ashutosh Gupta, Arvind Tripathi, Piyush Sharma
BACKGROUND: Obstructive sleep apnea (OSA) manifests as a reduction or complete cessation of airflow despite an ongoing inspiratory effort, leading to hypoxemia and hypercapnia. The inability to maintain normal breathing reduces the oxygen saturation in blood leading to a cycle of various systemic implications. Hence, a prospective single arm study was planned to evaluate the long-term (2 years) effect of oral appliance on cardiovascular fitness and psychomotor performance in patients with mild to moderate obstructive sleep apnea...
July 10, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28688157/the-application-of-3-dimensional-printing-for-preoperative-planning-in-oral-and-maxillofacial-surgery-in-dogs-and-cats
#8
Jenna N Winer, Frank J M Verstraete, Derek D Cissell, Steven Lucero, Kyriacos A Athanasiou, Boaz Arzi
OBJECTIVE: To describe the application of 3-dimensional (3D) printing in advanced oral and maxillofacial surgery (OMFS) and to discuss the benefits of this modality in surgical planning, student and resident training, and client education. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned dogs (n = 28) and cats (n = 4) with 3D printing models of the skulls. METHODS: The medical records of 32 cases with 3D printing prior to major OMFS were reviewed...
July 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28684302/assessment-of-obstructive-sleep-apnoea-treatment-success-or-failure-after-maxillomandibular-advancement
#9
M H T de Ruiter, R C Apperloo, D M J Milstein, J de Lange
Maxillomandibular advancement (MMA) is an alternative therapeutic option that is highly effective for treating obstructive sleep apnoea (OSA). MMA provides a solution for OSA patients that have difficulty accepting lifelong treatments with continuous positive airway pressure or mandibular advancement devices. The goal of this study was to investigate the different characteristics that determine OSA treatment success/failure after MMA. The apnoea-hypopnoea index (AHI) was used to determine the success or failure of OSA treatment after MMA...
July 3, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28684071/three-dimensional-analysis-of-condylar-remodeling-and-skeletal-relapse-following-bimaxillary-surgery-a-2-year-follow-up-study
#10
Tong Xi, Rik van Luijn, Frank Baan, Ruud Schreurs, Martien de Koning, Stefaan Bergé, Thomas Maal
PURPOSE: To quantify the postoperative condylar remodelling and its role in skeletal relapse after bimaxillary surgery. MATERIALS AND METHODS: 50 patients with mandibular hypoplasia who underwent bimaxillary surgery were analyzed. CBCT scans were acquired preoperatively, one week postoperatively and two years postoperatively. 3D cephalometric analysis was carried out for each CBCT scan, after which the condylar volume analysis was performed. RESULTS: The maxilla was advanced by a mean of 2...
June 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28680600/a-novel-imaging-technique-to-evaluate-airflow-characteristics-in-the-upper-airway-of-an-obstructive-sleep-apnea-patient
#11
Hui Chen, Ghizlane Aarab, Jian-Wei Liu, Yong-Liang Yu, Jing Guo, Paul F van der Stelt, Frank Lobbezoo
We report about a novel imaging technique for airflow analysis, particle image velocimetry (PIV), used in a moderate obstructive sleep apnea (OSA) patient. By measuring the airflow characteristics in the upper airway at different protrusion positions, the effect of mandibular advancement device (MAD) on OSA was further understood.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28670661/comparison-of-4-and-6%C3%A2-weeks-of-rest-period-for-repair-of-root-resorption
#12
Sneh A Mehta, Shailesh V Deshmukh, Ravindranath B Sable, Amol S Patil
BACKGROUND: The study was designed to evaluate and compare the rest periods of 4 and 6 weeks for healing of orthodontically induced root resorption craters. METHODS: The study was conducted with a split-mouth design, with the right and left mandibular first premolars of 14 subjects serving as the two groups of the study. The right premolars constituted group A and the left ones, group B. Intrusive force was applied on these teeth for a period of 6 weeks, followed by retaining the teeth for 4 weeks (group A) and 6 weeks (group B) as rest periods before extraction...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28669444/long-term-influence-of-mandibular-advancement-on-the-volume-of-the-posterior-airway-in-skeletal-class-ii-patients-a-retrospective-analysis
#13
D Dalla Torre, D Burtscher, G Widmann, M Rasse, T Puelacher, W Puelacher
In the past, maxillomandibular advancement has resulted in considerable improvement in the volume of the posterior airway space. The objective of the present study was to find out how mandibular advancement without maxillary involvement would affect the posterior airway space in patients with mandibular retrognathism. Cone-beam computed tomographic (CT) scans were done for 20 patients before, and six months after, mandibular advancement. Cephalometric analysis at both time points included 2-dimensional and 3-dimensional assessment of the upper airway...
June 29, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28665842/variations-in-current-procedural-terminology-coding-for-craniofacial-surgery-a-need-for-review-and-change
#14
Ember L Ewings, Petros Konofaos, Robert D Wallace
BACKGROUND: A survey was utilized to study the coding practices of surgeons performing craniofacial procedures, in order to determine whether coding for these procedures might be standardized or expanded. METHODS: An online survey was designed with 6 sample cases to cover a variety of procedures encountered in the field of craniofacial surgery which was sent to members of 3 professional organizations centered around the practice of craniofacial/maxillofacial surgery...
June 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28664540/maintenance-diets-following-rapid-weight-loss-in-obstructive-sleep-apnea-a-pilot-1-year-clinical-trial
#15
Elizabeth A Cayanan, Nathaniel S Marshall, Camilla M Hoyos, Craig L Phillips, Yasmina Serinel, Keith K H Wong, Brendon J Yee, Ronald R Grunstein
Very low energy diets (VLED) appear to be the most efficacious dietary-based obesity reduction treatments in obstructive sleep apnea (OSA); however, effective weight loss maintenance strategies remain untested in this condition. Our study aimed to assess the feasibility, tolerability and efficacy of two common maintenance diets during a 10-month follow-up period after rapid weight loss using a 2-month VLED. In this two-arm, single-centre, open-label pilot trial, obese adult OSA patients received a 2-month VLED before being allocated to either the Australian Guide to Healthy Eating diet (AGHE) or a low glycaemic index high-protein diet (LGHP)...
June 30, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28659977/facial-mobility-after-maxilla-mandibular-advancement-in-patients-with-severe-obstructive-sleep-apnea-syndrome-a-three-dimensional-study
#16
Laura Verzé, Francesca Antonella Bianchi, Niccolò Barla, Serena Maria Curti, Giovanni Gerbino, Guglielmo Amedeo Ramieri
Introduction. The functional results of surgery in terms of facial mobility are key elements in the treatment of patients. Little is actually known about changes in facial mobility following surgical treatment with maxillomandibular advancement (MMA). Objectives. The three-dimensional (3D) methods study of basic facial movements in typical OSAS patients treated with MMA was the topic of the present research. Materials and Methods. Ten patients affected by severe obstructive sleep apnea syndrome (OSAS) were engaged for the study...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28658359/the-influence-of-sagittal-position-of-the-mandible-in-facial-attractiveness-and-social-perception
#17
Lorena Marques Ferreira de Sena, Lislley Anne Lacerda Damasceno E Araújo, Arthur Costa Rodrigues Farias, Hallissa Simplício Gomes Pereira
OBJECTIVE: This study aims at comparing the perception of orthodontists, maxillofacial surgeons, visual artists and laypersons when evaluating the influence of sagittal position of the mandible - in lateral view - in facial attractiveness; at a job hiring; and in the perception of socioeconomic profile. METHODS: A black male, a white male, a black female and a white female with harmonic faces served as models to obtain a facial profile photograph. Each photograph was digitally manipulated to obtain seven facial profiles: an ideal, three simulating mandibular advancement and three simulating mandibular retrusion, producing 28 photographs...
March 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28648958/use-of-a-three-dimensional-custom-made-porous-titanium-prosthesis-for-mandibular-body-reconstruction
#18
Q Qassemyar, N Assouly, S Temam, F Kolb
The progress made in recent years in the field of head and neck bone reconstruction is directly related to technological advancements made in computer-aided design and manufacturing (CAD/CAM) and three-dimensional printing in particular. Today these technologies are mainly used in mandibular reconstruction to manufacture aids for harvesting and shaping bone flaps. However problems remain when addressing patients with a contraindication to microsurgery who need extensive bone reconstruction. For these patients who cannot benefit from vascularized bone grafts, surgeons have to find alternative solutions aimed at maintaining best function and aesthetics...
June 22, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28648911/influence-of-bimaxillary-surgery-on-pharyngeal-airway-in-class-iii-deformities-and-effect-on-sleep-apnea-a-stop-bang-questionnaire-and-cone-beam-computed-tomography-study
#19
Narayan H Gandedkar, Chai Kiat Chng, Yong Chen Por, Vincent Kok Leng Yeow, Andrew Tjin Chiew Ow, Tian Ee Seah
PURPOSE: To evaluate pharyngeal airway space (PAS; nasopharyngeal, oropharyngeal, and total airway) volume and the correlation of an obstructive sleep apnea (OSA) and hypopnea syndrome screening questionnaire (STOP-BANG) with various mandibular setbacks during bimaxillary surgery and compare these findings with an age- and gender-matched skeletal Class I control group. PATIENTS AND METHODS: This retrospective cohort study was composed of patients with skeletal Class III discrepancy who underwent bimaxillary jaw surgery and were assessed with STOP-BANG score, cephalometry, and cone-beam computed tomography (of the PAS)...
June 1, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28645317/facial-soft-tissue-response-to-maxillo-mandibular-advancement-in-obstructive-sleep-apnea-syndrome-patients
#20
Julio Cifuentes, Christian Teuber, Alfredo Gantz, Ariel Barrera, Gholamreza Danesh, Nicolas Yanine, Carsten Lippold
No abstract text is available yet for this article.
June 23, 2017: Head & Face Medicine
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