Three-Dimensional Analysis of the Pharyngeal Airway Volume and Craniofacial Morphology in Patients With Bilateral Cleft Lip and Palate.
This study aimed to determine the correlations between the craniofacial morphology and pharyngeal airway volume in patients with complete bilateral cleft lip and palate (BCLP). DESIGN: Retrospective study. SETTING: Tertiary hospital. PARTICIPANTS: Twenty-seven patients with complete BCLP and 27 class I control patients, aged 10 to 14 years. MAIN OUTCOME MEASURE: The pharyngeal airway volume and craniofacial morphology were evaluated using cone-beam computed tomography. Measurements were compared between groups and any correlations were identified. RESULTS: A significantly smaller total pharyngeal a...
Source: The Cleft Palate-Craniofacial Journal - August 18, 2020 Category: ENT & OMF Authors: Kuang W, Zheng J, Li S, Yuan S, He H, Yuan W Tags: Cleft Palate Craniofac J Source Type: research

Changes in the hyoid bone, tongue, and oropharyngeal airway space after mandibular setback surgery evaluated by cone-beam computed tomography
Mandibular setback surgery can change the position of the mandible which improves occlusion and facial profile. Surgical movement of the mandible affects the base of the tongue, hyoid bone, and associated tiss... (Source: Maxillofacial Plastic and Reconstructive Surgery)
Source: Maxillofacial Plastic and Reconstructive Surgery - August 12, 2020 Category: ENT & OMF Authors: Seon-Hye Kim and Sung-Kwon Choi Tags: Research Source Type: research

In vitro-in vivo correlations (IVIVCs) of deposition for drugs given by oral inhalation.
Abstract Conventional in vitro tests to assess the aerodynamic particle size distribution (APSD) from inhaler devices use simple right-angle inlets ("mouth-throats", MTs) to cascade impactors, and air is drawn through the system at a fixed flow for a fixed time. Since this arrangement differs substantially from both human oropharyngeal airway anatomy and the patterns of air flow when patients use inhalers, the ability of in vitro tests to predict in vivo deposition of pharmaceutical aerosols has been limited. MTs that mimic the human anatomy, coupled with simulated breathing patterns, have yielded estima...
Source: Advanced Drug Delivery Reviews - June 24, 2020 Category: Drugs & Pharmacology Authors: Newman SP, Chan HK Tags: Adv Drug Deliv Rev Source Type: research

Evaluation of the Oropharyngeal Airway Space in Class II Malocclusion Treated with Mandibular Activator: A Retrospective Study.
CONCLUSION: The upper airway values did not show any significant discrepancies between the two groups during the observation period. CLINICAL SIGNIFICANCE: Functional devices were effective in solving class II relationships, but there is no evidence of successful breathing disorders prevention by using mandibular activators, probably due to the stability of airway tissues reached in pubertal age in both groups. PMID: 33025936 [PubMed - indexed for MEDLINE] (Source: J Contemp Dent Pract)
Source: J Contemp Dent Pract - June 1, 2020 Category: Dentistry Authors: Cortese M, Pigato G, Casiraghi G, Ferrari M, Bianco E, Maddalone M Tags: J Contemp Dent Pract Source Type: research

Expansion sphincter pharyngoplasty: analyzing the technique based on anatomy
ConclusionThe present study is a basic study demonstrating how different techniques of ESP affect the position of the soft palate. The PP –SPC attachment can be transected in the patients with anterior–posterior palatal and lateral wall collapse to pull the soft palate anteriorly in addition to prevent the lateral wall collapse. The PP–SPC attachment can be preserved in the patients with only lateral wall collapse. Nevertheless, the clinical consequences of these static changes need to be evaluated in clinical studies. (Source: European Archives of Oto-Rhino-Laryngology)
Source: European Archives of Oto-Rhino-Laryngology - April 1, 2020 Category: ENT & OMF Source Type: research

Alternative Transoral Application of Nasopharyngeal Airways.
Authors: Matsui R, Wong M, Waters B Abstract Transoral application of a nasopharyngeal airway (NPA) is a novel technique for difficult airway management. Clinically, it is an effective alternative for use in nonintubated dental cases under total intravenous anesthesia. This technique can help improve oxygenation and ventilation in clinical situations in which the conventional use of NPAs is ineffective, such as in patients who have findings of obesity; mandibular retrognathia or hypoplasia; maxillary hypoplasia; macroglossia; nasal obstruction secondary to hypertrophic tonsillar, adenoid, and/or lymphoid tissues or...
Source: Anesthesia Progress - March 21, 2020 Category: Anesthesiology Tags: Anesth Prog Source Type: research

In True Beverly Hills Style, Both Form and Function: Arthur Guedel ’s 1933 “Nontraumatic Pharyngeal Airway”
In the early twentieth century, many physician-anesthetists packed example(s) of an oropharyngeal airway in their toolboxes. Although metal varieties invented by Connell or Waters werestatus quo, these forced physicians to tolerate a patent but potentially traumatized patient airway in the form of bruised lips and chipped teeth. Enter Arthur E. Guedel, M.D. (1883 to 1956,left), with his “nontraumatic pharyngeal airway,” publicized in 1933 from his adopted hometown of Beverly Hills, California. Constructing his semicircular oropharyngeal airway of rubber that could flex to any individual’s anatomy, Dr. Gue...
Source: Anesthesiology - December 13, 2019 Category: Anesthesiology Source Type: research

How does distraction osteogenesis maxillary expansion (DOME) reduce severity of obstructive sleep apnea?
Abstract OBJECTIVE: Distraction osteogenesis maxillary expansion (DOME) is a reliable method to expand the nasal floor and hard palatal vault in adults with obstructive sleep apnea (OSA). DOME results in a reduction in the apnea-hypopnea index (AHI) and subjective report of improved nasal breathing. Using rhinomanometry augmented computational fluid dynamic (CFD) modeling, we propose a mechanism of how DOME reduces upper airway pharyngeal collapse in adults with OSA. MATERIAL AND METHOD: A retrospective cohort with 20 subjects and mean age of 29.6 ± 8 years who completed DOME at Stanford University fro...
Source: Sleep and Breathing - December 9, 2019 Category: Sleep Medicine Authors: Iwasaki T, Yoon A, Guilleminault C, Yamasaki Y, Liu SY Tags: Sleep Breath Source Type: research

How does distraction osteogenesis maxillary expansion (DOME) reduce severity of obstructive sleep apnea?
AbstractObjectiveDistraction osteogenesis maxillary expansion (DOME) is a reliable method to expand the nasal floor and hard palatal vault in adults with obstructive sleep apnea (OSA). DOME results in a reduction in the apnea-hypopnea index (AHI) and subjective report of improved nasal breathing. Using rhinomanometry augmented computational fluid dynamic (CFD) modeling, we propose a mechanism of how DOME reduces upper airway pharyngeal collapse in adults with OSA.Material and methodA retrospective cohort with 20 subjects and mean age of 29.6 ± 8 years who completed DOME at Stanford University from September 2014 to ...
Source: Sleep and Breathing - December 9, 2019 Category: Respiratory Medicine Source Type: research

Mandibular distraction osteogenesis in the treatment of pediatric temporomandibular joint ankylosis with micrognathia and obstructive sleep apnea syndrome: A case report with 4-year follow-up.
Authors: Yu X, Wang J, Hou S, Zeng R Abstract Temporomandibular joint (TMJ) ankylosis in pediatric patients is rare and may cause severe micrognathia and obstructive sleep apnea syndrome. The present study reports on the treatment and 4-year follow-up of a pediatric patient with early-onset bilateral TMJ ankylosis and severe secondary micrognathia, as well as obstructive sleep apnea syndrome. A typical 'bird face' appearance was noted with severe mandible retrognathism and a significant convex facial profile. The treatment of this patient involved TMJ ankylosis release with condylectomy and simultaneous bilateral m...
Source: Experimental and Therapeutic Medicine - December 7, 2019 Category: General Medicine Tags: Exp Ther Med Source Type: research

Impact of inhalation delay on medication delivery from a salbutamol HFA pressurized metered dose inhaler used with and without a new prototype portable valved holding chamber
Conclusions: The prototype VHC may provide a potential option for patients previously unwilling to carry more conventional VHCs with them, in order to give delivery assurance of their reliever medication. (Source: European Respiratory Journal)
Source: European Respiratory Journal - November 20, 2019 Category: Respiratory Medicine Authors: Suggett, J., Ellery, A., Doyle, C., Ali, R., Nagel, M. Tags: Airway pharmacology and treatment Source Type: research

Comparative analysis of the oropharyngeal airway in patients aged over 40 years: A cone beam computed tomography study
Conclusions: Patients aged from 50 to 59 years had the smallest oropharyngeal airway measurements; therefore, they might be at high risk of developing sleep-related breathing disorders, and further assessment is recommended. (Source: European Journal of General Dentistry)
Source: European Journal of General Dentistry - September 10, 2019 Category: Dentistry Authors: Mustafa Alkhader Mats Geijer Source Type: research

A randomized trial of oropharyngeal airways to assist stabilization of preterm infants in the delivery room
Positive pressure ventilation (PPV) using a ventilation device and a face mask is recommended for compromised newborn infants in the delivery room (DR). Airway obstruction and face mask leak during PPV may contribute to failure of resuscitation. Using an oropharyngeal airway (OPA) may improve efficacy of mask PPV. To determine whether the use of an OPA with mask PPV in the DR during stabilization of infants (Source: Resuscitation)
Source: Resuscitation - September 9, 2019 Category: Emergency Medicine Authors: C. Omar F. Kamlin, Georg M. Schm ölzer, Jennifer A. Dawson, Lorraine McGrory, Joyce O’Shea, Susan M. Donath, Laila Lorenz, Stuart B. Hooper, Peter G. Davis Tags: Clinical paper Source Type: research

Pharyngeal dimensional changes in class II malocclusion treatment when using Forsus® or intermaxillary elastics – An exploratory study
ConclusionsBoth orthodontic treatment approaches appear to be associated with a similar increase in oropharyngeal airway dimensions. Male patients under 14-year-old had a greater significant increase compared to female patients and older children. Normal pharyngeal dimensions changes were not accounted for.RésuméObjectifL’obstruction des voies respiratoires pharyngées peut favoriser certaines formes de troubles respiratoires du sommeil (SDB) chez les enfants prédisposés, en particulier ceux qui présentent une malocclusion de classe II. Des changements dans les zones anatomiqu...
Source: International Orthodontics - September 4, 2019 Category: Dentistry Source Type: research

Analysis of three dimensional oropharyngeal airway and hyoid position in retrognathic adolescent patients
ConclusionThe null hypotheses were rejected. Significant differences in the three-dimensional size of the oropharyngeal space or hyoid position when comparing individuals with a normal jaw relationship with individuals with retrognathic mandibles. (Source: Orthodontic Waves)
Source: Orthodontic Waves - August 1, 2019 Category: Dentistry Source Type: research

Predictability of pharyngeal airway space dimension changes after orthognathic surgery in Class II patients: a mathematical approach
ConclusionPredicting pharyngeal airway space (PAS) development after mandibular advancement by analysing lateral cephalometric radiographs (LCR) may be useful in the screening and treatment of obstructive sleep apnea syndrome (OSAS) patients. Our mathematical approach is a simple and sustainable prediction tool based on LTR data for patients with Class II malocclusions. (Source: Journal of Cranio Maxillofacial Surgery)
Source: Journal of Cranio Maxillofacial Surgery - July 26, 2019 Category: ENT & OMF Source Type: research

Occipital and external acoustic meatus to axis angle: a useful predictor of oropharyngeal space in rheumatoid arthritis patients with atlantoaxial subluxation.
CONCLUSIONS: O-EAa was superior to O-C2a in predicting nPAS, especially in the case of AAS, because it affects both O-C2a and cranial translational motion. O-EAa would be a useful parameter for surgeons performing occipitocervical fusion in patients with AAS. PMID: 31226680 [PubMed - as supplied by publisher] (Source: Journal of Neurosurgery.Spine)
Source: Journal of Neurosurgery.Spine - June 20, 2019 Category: Neurosurgery Authors: Morizane K, Takemoto M, Neo M, Fujibayashi S, Otsuki B, Tanida S, Shimizu T, Ito H, Matsuda S Tags: J Neurosurg Spine Source Type: research

Human Factors Associated With the Use of Manual Bulb Suction Devices
This study is the first step in developing clinical guidelines for safe and effective mechanical use of manual bulb suction to reduce and prevent upper airway injury. Objective The aim of this study was to determine the negative pressure generated when a 2-oz. manual bulb suction device is compressed and released, and hand placement is either in a radial or axial position. Methods A total of 87 subjects were recruited using a convenience sampling method to identify hand placement and predicted negative pressures emitted during bulb compression and release. A pressure transmitter system was developed and tested with 6...
Source: Nursing Research - April 27, 2019 Category: Nursing Tags: BRIEF REPORTS Source Type: research

Changes in sleep and airway variables in patients with obstructive sleep apnea after mandibular advancement splint treatment
ConclusionsCombined effects of baseline total airway volume, body mass index, neck circumference, location of minimal cross sectional area, and OSA severity were associated with treatment response. Patients with higher initial OSA and more superiorly located airway constriction showed enhanced treatment response to MAS therapy. Airway constriction due to maxillofacial disproportions rather than soft tissue obstruction also showed better treatment response. No significant relationships were found in lateral cephalogram measurements. (Source: American Journal of Orthodontics and Dentofacial Orthopedics)
Source: American Journal of Orthodontics and Dentofacial Orthopedics - April 1, 2019 Category: Dentistry Source Type: research

Changes in pharyngeal airway dimensions following incremental and maximum bite advancement during Herbst-rapid palatal expander appliance therapy in late adolescent and young adult patients: a randomized non-controlled prospective clinical study.
Abstract OBJECTIVES: This was a parallel, assessor-blinded, randomized, non-controlled prospective trial with the objective to evaluate and compare the effects of maximum advancement (MA) and incremental advancement (IA) of mandible with cast-splint-type Herbst-rapid palatal expander (RPE) appliance on pharyngeal airway dimensions and hyoid bone position in skeletal Class II late adolescents and young adults. MATERIALS AND METHODS: A total of 48 patients (19 male and 29 female, mean age: 15.45 ± 1.42 years) with skeletal Class II malocclusion were treated with cast-splint Herbst-RPE appliance. Inclusio...
Source: European Journal of Orthodontics - March 19, 2019 Category: Dentistry Authors: Gul Amuk N, Kurt G, Baysal A, Turker G Tags: Eur J Orthod Source Type: research

Can C2-6 Cobb Angle Replace C2-7 Cobb Angle?: An Analysis of Cervical Kinetic Magnetic Resonance Images and X-rays
Study Design. Retrospective study of consecutive 113 cervical kinetic magnetic resonance images (kMRIs) and 57 radiographs. Objective. To elucidate the relationship between C2-6 or C2-7 Cobb angle and cervical sagittal alignment parameters using kMRI, and evaluate the visibility of C6 and C7 inferior endplates on cervical radiographs. Summary of Background Data. Several studies have used C2-6 Cobb angle instead of C2-7 Cobb angle as C7 inferior endplate is not always visible because of overlying shadows. However, the relationship between C2-6 or C2-7 Cobb angle and cervical sagittal alignment parameters remains unc...
Source: Spine - February 5, 2019 Category: Orthopaedics Tags: CERVICAL SPINE Source Type: research

Evaluation of Three-Dimensional Changes in Pharyngeal Airway Following Isolated Lefort One Osteotomy for the Correction of Vertical Maxillary Excess: A Prospective Study
ConclusionAmong the three segments of airway studied, oropharyngeal airway volume has shown the highest post-surgical reduction though statistically insignificant. ESS scores were within normal limits. Hence, we are of the opinion that there is lack of evidence to conclude that the patients undergoing lefort one superior repositioning for the treatment of VME might develop significant narrowing of PAS that may predispose the patient to breathing disorders. (Source: Journal of Maxillofacial and Oral Surgery)
Source: Journal of Maxillofacial and Oral Surgery - January 11, 2019 Category: ENT & OMF Source Type: research

Diffuse idiopathic skeletal hyperostosis: an incidental finding on cbct radiographic assessment
ConclusionsSpinal diffuse idiopathic skeletal hyperostosis is a common bone-forming disorder in the middle-aged and older population. Its recognition is important because this condition can render the spine susceptible to fractures even with minor trauma, such as ground-level fall, resulting in delayed diagnosis and neurologic deterioration. (Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology)
Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology - December 15, 2018 Category: ENT & OMF Source Type: research

Clinical Impact of 2 types of Mandibular Retention Devices (MRD) - Narval CADCAM vs Narval nonCADCAM - on OSA: ESTAMPS STUDY
Conclusion: CADCAM increase more efficiently OV than nonCADCAM. This difference is likely due to a smaller OVD. (Source: European Respiratory Journal)
Source: European Respiratory Journal - November 19, 2018 Category: Respiratory Medicine Authors: Kerbrat, A., Vinuesa, O., Aversenq, E., Morin, L., Lavergne, F., Kerbrat, J.-B. Tags: Sleep and control of breathing Source Type: research

[Tonsil surgery: impact of the mouth gag on pharyngeal diameter].
Authors: Windfuhr JP, Chen YS Abstract BACKGROUND: Photo documentation of hypertrophic tonsils is requested by some insurance companies to justify reimbursement of tonsillotomy. In 2017, a standardized photo documentation was introduced in tonsillotomy patients to verify the indication and effectiveness of the procedure. OBJECTIVE: Using the archived photo documentation, this study aimed to evaluate the impact of two different positions of the mouth gag on the oropharyngeal airway. MATERIALS AND METHODS: Pictures were taken through the operating microscope after insertion of the mouth gag but without s...
Source: HNO - September 6, 2018 Category: ENT & OMF Tags: HNO Source Type: research

The effects of sex, skeletal age, and sagittal skeletal pattern on pharyngeal airway dimensions and related structures in growing Thai orthodontic patients
ConclusionInteractions between sex–skeletal age and skeletal age–sagittal skeletal pattern affected the pharyngeal airway dimensions. The surrounding structure positions and dimensions varied according to sex–skeletal age interaction and sagittal skeletal difference. (Source: Orthodontic Waves)
Source: Orthodontic Waves - July 10, 2018 Category: Dentistry Source Type: research

Bilateral mandibular nerve injury following mask ventilation: a case report
ConclusionAn over-inflated sealing cushion of a facemask may trigger difficult mask ventilation leading to mandibular nerve injury following mask ventilation. Alternative airway management techniques such as laryngeal mask airway should be considered when airway maintenance can only be achieved with strong pressure applied to the facemask and/or mandible.ResumoJustificativa e objetivosA lesão nervosa após ventilação com máscara é uma complicação anestésica rara, mas grave. A maioria dos casos relatados está associada à pressão excessiva apl...
Source: Brazilian Journal of Anesthesiology - July 10, 2018 Category: Anesthesiology Source Type: research

Feasibility Test of Three Dimensional Intermittent Oro-Esophageal Tube Guide for Dysphagia; Biocompatibility and Pilot Case Study
Conclusion: This tendency increases feasibility of the customized IOE tube. We are still recruiting subjects for statistical significance of our trial.Graphical abstract (Source: IRBM)
Source: IRBM - July 10, 2018 Category: Biomedical Engineering Source Type: research

The effects of sex, skeletal age, and sagittal skeletal pattern on pharyngeal airway dimensions and related structures in growing Thai orthodontic patients
ConclusionInteractions between sex–skeletal age and skeletal age–sagittal skeletal pattern affected the pharyngeal airway dimensions. The surrounding structure positions and dimensions varied according to sex–skeletal age interaction and sagittal skeletal difference. (Source: Orthodontic Waves)
Source: Orthodontic Waves - July 5, 2018 Category: Dentistry Source Type: research

Bilateral mandibular nerve injury following mask ventilation: a case report
ConclusionAn over-inflated sealing cushion of a facemask may trigger difficult mask ventilation leading to mandibular nerve injury following mask ventilation. Alternative airway management techniques such as laryngeal mask airway should be considered when airway maintenance can only be achieved with strong pressure applied to the facemask and/or mandible.ResumoJustificativa e objetivosA lesão nervosa após ventilação com máscara é uma complicação anestésica rara, mas grave. A maioria dos casos relatados está associada à pressão excessiva apl...
Source: Brazilian Journal of Anesthesiology - July 5, 2018 Category: Anesthesiology Source Type: research

Feasibility Test of Three Dimensional Intermittent Oro-Esophageal Tube Guide for Dysphagia; Biocompatibility and Pilot Case Study
Conclusion: This tendency increases feasibility of the customized IOE tube. We are still recruiting subjects for statistical significance of our trial.Graphical abstract (Source: IRBM)
Source: IRBM - July 5, 2018 Category: Biomedical Engineering Source Type: research

[Influence of rocuronium dose on the effectiveness of mask ventilation : A prospective, randomized clinical trial].
e T Abstract BACKGROUND: Mask ventilation could improve after administration of muscle relaxants if there is a functional obstruction of the airway, such as laryngospasm, vocal cord closure or opioid-induced muscle rigidity. On the other hand, muscle relaxants could worsen mask ventilation because they induce upper airway collapse; however, clinical studies showed that rocuronium (Roc) improved mask ventilation or it remained unchanged. In most cases Roc 0.06 mg/kgBW was used. OBJECTIVE: The optimal dose of Roc has not been studied; therefore, we studied the quality of mask ventilation with three diffe...
Source: Der Anaesthesist - May 25, 2018 Category: Anesthesiology Authors: Hellmund M, Bajorat J, Machmüller S, Sauer M, Zitzmann A, Reuter DA, Mencke T Tags: Anaesthesist Source Type: research

[Bilateral mandibular nerve injury following mask ventilation: a case report].
CONCLUSION: An over-inflated sealing cushion of a facemask may trigger difficult mask ventilation leading to mandibular nerve injury following mask ventilation. Alternative airway management techniques such as laryngeal mask airway should be considered when airway maintenance can only be achieved with strong pressure applied to the facemask and/or mandible. PMID: 29566939 [PubMed - as supplied by publisher] (Source: Revista Brasileira de Anestesiologia)
Source: Revista Brasileira de Anestesiologia - March 25, 2018 Category: Anesthesiology Tags: Rev Bras Anestesiol Source Type: research

The effects of sex, skeletal age, and sagittal skeletal pattern on pharyngeal airway dimensions and related structures in growing Thai orthodontic patients
Conclusion Interactions between sex–skeletal age and skeletal age–sagittal skeletal pattern affected the pharyngeal airway dimensions. The surrounding structure positions and dimensions varied according to sex–skeletal age interaction and sagittal skeletal difference. (Source: Orthodontic Waves)
Source: Orthodontic Waves - March 24, 2018 Category: Dentistry Source Type: research

Reply: Only with an optimal position of the supraglottic airway in situ, valid conclusions can be drawn about oropharyngeal airway pressure
Divya Jain, Komal GandhiIndian Journal of Anaesthesia 2018 62(3):243-243 (Source: Indian Journal of Anaesthesia)
Source: Indian Journal of Anaesthesia - March 14, 2018 Category: Anesthesiology Authors: Divya Jain Komal Gandhi Source Type: research

Only with an optimal position of the supraglottic airway in situ, valid conclusions can be drawn about oropharyngeal airway pressure
André AJ Van Zundert, Kerstin H WyssusekIndian Journal of Anaesthesia 2018 62(3):241-242 (Source: Indian Journal of Anaesthesia)
Source: Indian Journal of Anaesthesia - March 14, 2018 Category: Anesthesiology Authors: Andr & #233; AJ Van Zundert Kerstin H Wyssusek Source Type: research

Prehospital Rapid Sequence Intubation by Intensive Care Flight Paramedics.
CONCLUSION: A very high RSI procedural success rate was observed across the study period. This supports the growing recognition that appropriately trained paramedics can perform RSI safely in the prehospital environment. PMID: 29405803 [PubMed - as supplied by publisher] (Source: Prehospital Emergency Care)
Source: Prehospital Emergency Care - February 8, 2018 Category: Endocrinology Tags: Prehosp Emerg Care Source Type: research

Bilateral mandibular nerve injury following mask ventilation: a case report
Conclusion An over-inflated sealing cushion of a facemask may trigger difficult mask ventilation leading to mandibular nerve injury following mask ventilation. Alternative airway management techniques such as laryngeal mask airway should be considered when airway maintenance can only be achieved with strong pressure applied to the facemask and/or mandible. (Source: Brazilian Journal of Anesthesiology)
Source: Brazilian Journal of Anesthesiology - February 2, 2018 Category: Anesthesiology Source Type: research

Feasibility Test of Three Dimensional Intermittent Oro-Esophageal Tube Guide for Dysphagia; Biocompatibility and Pilot Case Study
Conclusion: This tendency increases feasibility of the customized IOE tube. We are still recruiting subjects for statistical significance of our trial. Graphical abstract (Source: IRBM)
Source: IRBM - February 2, 2018 Category: Biomedical Engineering Source Type: research

Association of palatine tonsil size and obstructive sleep apnea in adults
ObjectiveThe relationship between palatine tonsil (PT) size and obstructive sleep apnea (OSA) has not been well established in adults. The purpose of this study was to test the association between PT grade, PT volume, and OSA severity in U.S. adult patients. Study DesignCross‐sectional study of all patients (age ≥ 18 years) who underwent pharyngeal surgery for OSA that included palatine tonsillectomy with tonsil volume measurement from January 2011 to June 2016. MethodsMedical records were reviewed for PT grade (measured on clinical exam by the Brodsky tonsil grading scale), PT volume (measured intraoperatively by wat...
Source: The Laryngoscope - December 1, 2017 Category: ENT & OMF Authors: Sebastian M. Jara, Edward M. Weaver Tags: Original Reports Source Type: research

Lingual tonsillolith: prevalence and imaging characteristics evaluated on 2244 pairs of panoramic radiographs and CT images.
This study included 2244 patients without pathology at the base of tongue who underwent panoramic radiography and CT of the maxillofacial region. The size, number, and position of lingual tonsilloliths relative to the mandible and tongue were evaluated. RESULTS: Lingual tonsilloliths were observed in 33 (1.5%) and 108 (4.8%) of all patients on panoramic radiographs and CT images, respectively. The prevalence was higher in patients aged ≥40 years than in those aged
Source: Dentomaxillofacial Radiology - September 23, 2017 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Three-dimensional evaluation of the airway spaces in patients with and without cleft lip and palate: A digital volume tomographic study
Conclusions Patients with CLP showed reduced dimensions and volumes of the oropharyngeal airway in all 3 planes compared with the control group. (Source: American Journal of Orthodontics and Dentofacial Orthopedics)
Source: American Journal of Orthodontics and Dentofacial Orthopedics - August 31, 2017 Category: Dentistry Source Type: research

Dysphagia After Occipitothoracic Fusion is Caused by Direct Compression of Oropharyngeal Space Due to Anterior Protrusion of Mid-cervical Spine
Conclusions: Our results demonstrated strong relationships between PTA and the value of dPS, and the incidence of dysphagia. As PTA reflects anterior protrusion of mid-cervical spine, these results indicated that dysphagia after OTF is caused by narrowing of oropharyngeal space due to direct compression from anteirorly protruded mid-cervical spine. (Source: Journal of Spinal Disorders and Techniques)
Source: Journal of Spinal Disorders and Techniques - July 27, 2017 Category: Surgery Tags: Primary Research Source Type: research

Micrognathia and Oropharyngeal Space in Patients With Robin Sequence: Prenatal MRI Measurements
Micrognathia is the initiating feature of Robin sequence (RS) and leads to airway obstruction. Prenatal identification of micrognathia is currently qualitative and has not correlated with postnatal findings in previous studies. Oropharyngeal airway space has not been evaluated prenatally. The purposes of this study were to 1) quantitate mandibular characteristics and oropharyngeal size at prenatal magnetic resonance imaging (MRI) and 2) identify differences in fetuses with postnatal RS compared with those with micrognathia (without RS) and normal controls. (Source: Journal of Oral and Maxillofacial Surgery)
Source: Journal of Oral and Maxillofacial Surgery - July 26, 2017 Category: ENT & OMF Authors: Tessa D. Kooiman, Carly E. Calabrese, Ryne Didier, Judy A. Estroff, Bonnie L. Padwa, Maarten J. Koudstaal, Cory M. Resnick Tags: Craniomaxillofacial Deformities/Sleep Disorders/Cosmetic Surgery Source Type: research

Prenatal measurement of micrognathia and oropharyngeal space in patients with Robin sequence
Micrognathia is the initiating feature of Robin sequence (RS) and leads to airway obstruction. Prenatal identification of micrognathia is currently qualitative and has not correlated with postnatal findings in previous studies. Oropharyngeal airway space has not been evaluated prenatally. The purposes of this study were to: (1) quantitate mandibular characteristics and oropharyngeal size on prenatal magnetic resonance imaging (MRI) and (2) identify differences in fetuses with postnatal RS compared to those with micrognathia (without RS) and normal controls. (Source: Journal of Oral and Maxillofacial Surgery)
Source: Journal of Oral and Maxillofacial Surgery - July 26, 2017 Category: ENT & OMF Authors: Tessa D. Kooiman, Carly E. Calabrese, Ryne Didier, Judy A. Estroff, Bonnie L. Padwa, Maarten J. Koudstaal, Cory M. Resnick Source Type: research

Influence of pharyngeal airway respiration pressure on Class II mandibular retrusion in children: A computational fluid dynamics study of inspiration and expiration
Structured Abstract ObjectivesTo examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. Setting and Sample PopulationSixty‐two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. Material and MethodsCone‐beam computed tomography data were used to reconstruct three‐dimensional shapes of the nasal and pharyngeal airways. Airflow pressure was simulated using CFD to calculate nasal resistance and pharyngeal airway ...
Source: Orthodontics and Craniofacial Research - April 17, 2017 Category: Dentistry Authors: T. Iwasaki, H. Sato, H. Suga, Y. Takemoto, E. Inada, I. Saitoh, K. Kakuno, R. Kanomi, Y. Yamasaki Tags: ORIGINAL ARTICLE Source Type: research

Determination of the appropriate oropharyngeal airway size in adults: Assessment using ventilation and an endoscopic view
Size 9 and 8 airways for men and women, respectively, have been proposed as most appropriate based on endoscopy. However, a limitation of this guideline is that ventilation was not assessed. (Source: The American Journal of Emergency Medicine)
Source: The American Journal of Emergency Medicine - April 14, 2017 Category: Emergency Medicine Authors: Hyun Joo Kim, Shin Hyung Kim, Ji Young Min, Wyun Kon Park Source Type: research

Pharyngeal airway dimensions in skeletal class II: A cephalometric growth study.
CONCLUSION: The naso-oropharyngeal airway dimensions showed a statistically significant difference among the class II, division 1; class II, division 2; and class I groups during different growth periods. PMID: 28361023 [PubMed - in process] (Source: Imaging Science in Dentistry)
Source: Imaging Science in Dentistry - April 2, 2017 Category: Dentistry Tags: Imaging Sci Dent Source Type: research

Herbst appliance effects on pharyngeal airway ventilation evaluated using computational fluid dynamics.
CONCLUSION: The Herbst appliance improves ventilation of the oropharyngeal and laryngopharyngeal airways. These results may provide a useful assessment of obstructive sleep apnea treatment during growth. PMID: 28121164 [PubMed - as supplied by publisher] (Source: The Angle Orthodontist)
Source: The Angle Orthodontist - January 24, 2017 Category: Dentistry Authors: Iwasaki T, Sato H, Suga H, Minami A, Yamamoto Y, Takemoto Y, Inada E, Saitoh I, Kakuno E, Kanomi R, Yamasaki Y Tags: Angle Orthod Source Type: research

Three-dimensional analysis of changes in pharyngeal airway space after mandibular setback surgery
Conclusions Combined orthognathic–orthodontic treatment improved skeletal 3 deformities. Orthognathic surgery reduced the volume and the antero-posterior width of the pharyngeal airway of patients with such deformities. (Source: Orthodontic Waves)
Source: Orthodontic Waves - January 8, 2017 Category: Dentistry Source Type: research