Corrigendum: Association between intraoral pressure and molar position and inclination in subjects with facial asymmetry

Abstract Objective: To determine the effect of an imbalance in buccolingual pressure that may be involved in molar dental compensation in the mandible and asymmetry of the dental arch in subjects with facial asymmetry. Materials and Methods: We performed simultaneous measurement of the buccolingual pressure on the mandibular right first molar when subjects without facial asymmetry experimentally shifted the mandible laterally. Buccolingual pressures in the rest position (RP), right-shifted position (RS), and left-shifted position (LS) were compared. Moreover, T1-weighted magnetic resonance images were obtained in RP, RS, and LS. Results: Tongue pressure tended to decrease in the order LS > RP > RS, while cheek pressure tended to increase in the order LS < RP < RS. The tongue/cheek pressure ratio tended to decrease in the order LS > RP > RS. There were significant positive (in RS) and negative (in LS) correlations between displacement of the tongue and tongue pressure. Conclusions: This imbalance in buccolingual pressures in the laterally-shifted mandibular position may partly explain molar dental compensation in the mandible and asymmetry of the dental arch in subjects with facial asymmetry.

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IS HIGH CONDYLECTOMY A SUFFICIENT TREATMENT OF FACIAL ASYMMETRY IN PATIENTS WITH CONDYLAR HYPERPLASIA?

10.26226/morressier.578e3b51d462b80292382a8c ◽

2016 ◽

Author(s):

Nir Porat

Keyword(s):

Facial Asymmetry ◽

Condylar Hyperplasia

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IMPORTANCE OF MOTIVATION IN TOLERABILITY OF INCREASED BREATHING RESISTANCE

Ulyanovsk Medico-biological Journal ◽

10.34014/2227-1848-2019-3-72-79 ◽

2019 ◽

pp. 72-79

Author(s):

Yu.Yu. Byalovskiy ◽

I.S. Rakitina

Keyword(s):

Functional State ◽

Maximum Level ◽

Technological Environment ◽

Breathing Control ◽

Aerodynamic Loads ◽

Breathing Resistance ◽

Resistive Breathing ◽

Resistive Loads ◽

Intraoral Pressure

Cortical mechanisms play an important role in breathing control under increased breathing resistance (resistive loads). Cortical mechanisms determine the level of voluntary motivation, which significantly affects the tolerance of resistive breathing loads. The purpose of the paper is to determine the effect of voluntary motivation on the tolerance of additional breathing resistance. Materials and Methods. The authors formed procedural motivation by means of moral encouragement or financial rewards of the subjects. Simulation of increased breathing resistance was performed using in-creasing values of thresholdless inspiratory aerodynamic loads: 40, 60, 70, and 80 % from the maximum intraoral pressure. Results. The maximum level of tolerance of additional breathing resistance was observed in volunteers with a material and subsidiary procedural motivation of activity. Under respiratory loads, these subjects demonstrated the greatest deviations of the functional state indicators. Undefined motivation based on the mobilization of goal-oriented resources with moral stimulation showed less efficiency. Lack of specially formed procedural motivation led to minimal tolerance of resistive loads. Conclusion. Procedural motivation, aimed at overcoming additional breathing resistance, significantly increases the tolerance of individual protective means of respiratory organs, which maintains health of workers in a polluted technological environment. Keywords: motivation, tolerance, increased breathing resistance. Большую роль в регуляции дыхания при увеличенном сопротивлении дыханию (резистивных нагрузках) играют кортикальные механизмы. Корковые механизмы определяют уровень произвольной мотивации, которая существенно влияет на переносимость резистивных дыхательных нагрузок. Цель исследования – определение влияния произвольной мотивации на переносимость дополнительного респираторного сопротивления. Материалы и методы. Процессуальную мотивацию формировали методом морального или материального поощрения испытуемых. Моделирование увеличенного сопротивления дыханию проводили с помощью предъявления возрастающих значений беспороговых инспираторных аэродинамических нагрузок: 40, 60, 70 и 80 % от максимального внутриротового давления. Результаты. Максимальный уровень переносимости дополнительного респираторного сопротивления наблюдался у добровольцев, у которых была сформирована материально-субсидивная процессуальная мотивация деятельности; у этой категории испытуемых во время действия дыхательных нагрузок отмечались наибольшие отклонения показателей функционального состояния. Произвольная мотивация на основе мобилизации волевых ресурсов при моральном стимулировании характеризовалась меньшей эффективностью, а отсутствие специально сформированной процессуальной мотивации сопровождалось минимальной переносимостью резистивных нагрузок. Выводы. Процессуальная мотивация, сформированная для преодоления дополнительного респираторного сопротивления, существенно повышает переносимость средств индивидуальной защиты органов дыхания, что имеет большое значение для сохранения здоровья работающих в условиях загрязненной производственной среды. Ключевые слова: мотивация, переносимость, увеличенное сопротивление дыханию.

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Paranasal Sinus Mucocele Clinical, imagistic and biochemical aspects

Revista de Chimie ◽

10.37358/rc.18.8.6513 ◽

2018 ◽

Vol 69 (8) ◽

Author(s):

Doina Vesa ◽

Cristian Martu ◽

Razvan Leata ◽

Ludmila Lozneanu ◽

luminita Radulescu ◽

...

Keyword(s):

Facial Asymmetry ◽

Retrospective Case ◽

Mri Scans ◽

The One ◽

Ethmoid Sinuses ◽

Retrospective Case Study ◽

Cellular Components ◽

Ct And Mri

Paranasal mucoceles are a type of cysts that evolve slowly and are asymptomatic; this poses a difficulty in diagnosing the patient because the symptoms can go unnoticed. The mucocele evolves unpredictably. On the one hand, it can become infected turning into pyoceles and on the other hand, it can invade important regions such as the orbital, cranial or genian regions, creating facial asymmetry. This is a retrospective case study of 37 patients diagnosed with sinus mucoceles, followed up by clinical examination and paraclinical tests such as CT and MRI scans. The biochemical components of the liquid from within the mucocele were analyzed and the following criteria were recorded: NaCl-, Cl-, Na+ and cholesterine as well as cellular components such as mastocytes, macrophages, hematocytes and leucocytes. In all cases, the treatment option was surgery with favorable post-operative and follow-up evaluation. The mucoceles that appeared post-operatively (maxillary and ethmoid sinuses) evolved more rapidly than the mucoceles that were induced byan external injury. Longer follow-up of operated patients permitted a more timely diagnosis of recurrences.

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Central ossifying fibroma of mandible

BMJ Case Reports ◽

10.1136/bcr-2020-239286 ◽

2020 ◽

Vol 13 (12) ◽

pp. e239286

Author(s):

Kumar Nilesh ◽

Prashant Punde ◽

Nitin Shivajirao Patil ◽

Amol Gautam

Keyword(s):

Fibrous Tissue ◽

Three Dimensional ◽

Facial Asymmetry ◽

Ossifying Fibroma ◽

Mandible Reconstruction ◽

Three Dimensional Printing ◽

Osseous Lesion ◽

Large Size ◽

Dimensional Printing

Ossifying fibroma (OF) is a rare, benign, fibro-osseous lesion of the jawbone characterised by replacement of the normal bone with fibrous tissue. The fibrous tissue shows varying amount of calcified structures resembling bone and/or cementum. The central variant of OF is rare, and shows predilection for mandible among the jawbone. Although it is classified as fibro-osseous lesion, it clinically behaves as a benign tumour and can grow to large size, causing bony swelling and facial asymmetry. This paper reports a case of large central OF of mandible in a 40-year-old male patient. The lesion was treated by segmental resection of mandible. Reconstruction of the surgical defect was done using avascular fibula bone graft. Role of three-dimensional printing of jaw and its benefits in surgical planning and reconstruction are also highlighted.

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