Anxiety and Ability to Recognize Clinical Information in Dentistry

2008 ◽  
Vol 87 (1) ◽  
pp. 65-68 ◽  
Author(s):  
I. Eli ◽  
D. Schwartz-Arad ◽  
Y. Bartal

Stress significantly affects a person’s cognitive ability to process information. Therefore, we hypothesized that patients’ ability to recognize information related to the procedure they are about to undergo will be affected by the stressfulness of the situation (less recognition under a high-stress situation as compared with a low-stress situation). Patients (n = 66) were evaluated for their ability to recognize clinical information supplied on two different occasions: immediately before oral surgery (high-stress condition) and before suture removal (low-stress condition). Dental and state of anxiety and expectation of pain were also assessed. On both occasions, the patients’ ability to recognize information correctly was low (less than 50%). Patients recognized significantly less information pre-operatively than before suture removal. State of anxiety, dental anxiety, and expectation to experience pain had a profound effect on their ability to recognize provided information correctly. Apparently, before dental treatment (high or low on stress), patients’ ability to process information may be severely impaired.

1994 ◽  
Vol 8 (3) ◽  
pp. 213-221 ◽  
Author(s):  
Peter Muris ◽  
Florence J. van Zuuren ◽  
Harald Merckelbach ◽  
Evert‐Jan Stoffels ◽  
Merel Kindt

This study investigated the predictive validity of the Miller Behavioral Style Scale (MBSS; Miller, 1987). Subjects had to work on an intelligence test. During this test, they could observe lights that informed them on how they were performing. There were two conditions: a low‐stress condition (n = 37) in which the lights always indicated that the subject was performing well, and a high‐stress condition (n.= 33) in which the lights signalled a deterioration of performance. In general, little support was found for the predictive validity of the MBSS.


2012 ◽  
Vol 170-173 ◽  
pp. 1777-1784
Author(s):  
Xin Ming Chen

Aimed at the support problem of the deep large-section tunnel excavated in high-stress condition with fractured surrounding rock, the different characteristics of the stresses and displacements of the surrounding rock of the tunnel with different section supports and lateral pressure coefficients were analyzed using numerical simulation and theoretical calculation, so was the effect of the height of the double-layered I-section beam on the bearing capacity. Arched with bottom arch superimposed and fully-closed I-section beam suitable for large-section tunnel excavated in high-stress condition with fractured surrounding rock was developed. This support applies fully-closed and horse-shoe shaped structure with I-section beam overlapped and welded and its bearing capacity is 2.5 times higher than frequently-used I-section beam. Underground field testing showed that the deformation of the surrounding rock could be effectively controlled when the secondary arched with bottom arch superimposed and fully-closed I-section beam of high bearing capacity was used.


2019 ◽  
Vol 356 ◽  
pp. 750-758 ◽  
Author(s):  
Jianyu Peng ◽  
Fengpeng Zhang ◽  
Guangliang Yan ◽  
Zhaoguo Qiu ◽  
Xinghang Dai

2017 ◽  
Vol 124 (6) ◽  
pp. 1194-1210 ◽  
Author(s):  
Yujin Kim ◽  
Jihwan Woo ◽  
Minjung Woo

This study investigated interactive effects of stress and task difficulty on working memory and cortico-cortical communication during memory encoding. Thirty-eight adolescent participants (mean age of 15.7 ± 1.5 years) completed easy and hard working memory tasks under low- and high-stress conditions. We analyzed the accuracy and reaction time (RT) of working memory performance and inter- and intrahemispheric electroencephalogram coherences during memory encoding. Working memory accuracy was higher, and RT shorter, in the easy versus the hard task. RT was shorter under the high-stress (TENS) versus low-stress (no-TENS) condition, while there was no difference in memory accuracy between the two stress conditions. For electroencephalogram coherence, we found higher interhemispheric coherence in all bands but only at frontal electrode sites in the easy versus the hard task. On the other hand, intrahemispheric coherence was higher in the left hemisphere in the easy (versus hard task) and higher in the right hemisphere (with one exception) in the hard (versus easy task). Inter- and intracoherences were higher in the low- versus high-stress condition. Significant interactions between task difficulty and stress condition were observed in coherences of the beta frequency band. The difference in coherence between low- and high-stress conditions was greater in the hard compared with the easy task, with lower coherence under the high-stress condition relative to the low-stress condition. Stress seemed to cause a decrease in cortical network communications between memory-relevant cortical areas as task difficulty increased.


2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Liyun Yang ◽  
Chenxi Ding ◽  
Renshu Yang ◽  
Zhen Lei ◽  
Jing Wang

The depth of mineral resources like coal continuously increases due to the exhaustion of shallow resources, and the characteristic of high ground stress in deep ground inevitably affects fracture of rock blasting. Combining with high-speed photography technology, the digital image correlation method (DIC) is introduced into experimental study on explosive mechanics. And strain evolution process of blasting under high stress condition is obtained by using the model experiment method. The preliminary results show that high stress condition has no obvious effects on the propagation law of blasting stress wave or its stress peak in the medium. In addition, it is found that medium in the “elastic vibration area” by conventional blast zoning is not always “elastic,” and on this basis, the concepts of “plastic area” and “quasielastic area” are put forward. The high stress condition does not influence partition range of above “plastic area” or “quasielastic area,” but in the “plastic area,” the high stress condition decreases both plastic strain value and its decay rate of relevant gauging points.


1973 ◽  
Vol 3 (1) ◽  
pp. 75-82 ◽  
Author(s):  
M. M. Larson ◽  
I. Palashev

Red and white oak seeds were treated and untreated with gibberellic acid (GA) and then watered with graded polyethylene glycol 400 solutions to simulate various soil water stress conditions. Seedling growth decreased as the osmotic potential of the soil solution decreased from −1/3 bars to −4 bars to −8 bars (the low, moderate, and high osmotic stress conditions, respectively). Seedling dry weights at high stress condition averaged only 11% of seedling dry weights at low stress condition. At high stress condition, shoot growth was more suppressed than root growth. White oak roots grew somewhat better than red oak roots at high stress condition.Treatment of seed with GA prior to germination stimulated stem elongation and number of leaves per plant but inhibited formation of lateral roots and other aspects of shoot and root growth, especially among white oak seedlings. The GA-stimulated stem growth observed at the low stress condition was completely suppressed at moderate and high stress conditions. GA-white oak seedlings appeared to be less tolerant of soil stress than untreated seedlings.


2017 ◽  
Vol 35 (75) ◽  
Author(s):  
Francisco Cázares de León ◽  
Alberto José Lozano Laín ◽  
Pedro Gutiérrez Lizardi ◽  
Alfredo Salinas Noyola

RESUMEN. Antecedentes: La ansiedad dental es común en los procedimientos de odontología y particularmente en los de cirugía oral Objetivo: Determinar el grado de ansiedad que se manifiesta ante la extracción quirúrgica de un tercer molar impactado y comparar los resultados de acuerdo a género. Métodos: El tipo de estudio es no experimental, con un diseño transversal, descriptivo y comparativo. La muestra estuvo conformada por 80 pacientes que acudieron a consulta odontológica de ambos géneros (28 varones y 52 mujeres) de entre 17 y 62 años de edad (media de 35.5 años). Resultados: Las mujeres tuvieron grados de ansiedad en un 56.3 %   contra un 27.5 % de los hombres, lo que indica que la proporción de ansiedad es mayor estadísticamente significativa para el género femenino. Conclusiones: la ansiedad es una emoción muy frecuente en los pacientes odontológicos particularmente en los que acuden a cirugía oral y específicamente en las extracciones de terceros molares. Existen diferencias entre géneros ya que el género femenino es el que presenta grados de ansiedad extrema, aunque hay que señalar que se deben considerar los factores socioculturales los cuales pueden determinar el comportamiento de cada individuo. Por último, es muy importante que el odontólogo haga uso de todas las técnicas y destrezas para evitar grados de ansiedad que pudieran conducir a estados críticos durante el tratamiento dental.ABSTRACT. Background: Dental anxiety is common in dental procedure and particular in dental surgery. Purpose: to determine the level of anxiety that is manifested before surgical removed of an impacted third molar and compare the results between the different gender. Methods: the type of study is not experimental design is transversal, but descriptive and comparative analysis. The sample consisted of 80 patients attending dental office of both male and female sex (28 males and 52 females) aged between 17 and 62 years old (mean 35.5 years). Results: the results showed that women anxiety levels showed at 53.4 % against 24.7 % of men, indicating that the proportion of anxiety is significantly higher for women. Conclusions: anxiety is a common emotion in dental patients particularly those who come to oral surgery and specifically in the third molar extractions. There are differences between genders and the female is the one with degrees of extreme anxiety, although it should be noted to consider the sociocultural factors which can determine the behavior of each individual. Finally, it is very important that the dentist makes use of all the techniques and skills to avoid anxiety levels that could lead to critical states during dental treatment.


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