scholarly journals Effect of dental wear, stabilization appliance and anterior tooth reconstruction on mandibular movements during speech

2008 ◽  
Vol 19 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Priscila de Oliveira Serrano ◽  
Fernanda Faot ◽  
Altair Antoninha Del Bel Cury ◽  
Renata Cunha Matheus Rodrigues Garcia
Keyword(s):  
Tooth Wear ◽  
Anterior Tooth ◽  
Control Group ◽  
Dental Wear ◽  
Jaw Opening ◽  
Before And After ◽  
Left And Right ◽  
The Right ◽  
Tracking Device ◽  
Mandibular Movements

This study described changes in mandibular movements during pronunciation of /m/ and /s/ sounds in Portuguese, in patients presenting dental wear before and after appliance insertion and tooth reconstruction. Subjects were divided into a control group of dentate patients and an experimental group of patients with incisal tooth wear due to bruxism. A magnetic jaw tracking device measured the jaw opening, and translations to left and right sides of the mandible during pronunciation of phonemes. Evaluations were carried out 1 week and immediately before appliance insertion; 24 h, 7, 30 and 60 days after appliance insertion; and 1 week and 1 month after tooth reconstruction. Data were submitted to two-way ANOVA, Mann-Whitney and Friedman tests (p<0.05). Jaw opening was different (p<0.05) for both sounds in all periods. The anteroposterior amplitude for /s/ showed differences immediately before and 1 month after appliance insertion (p<0.05). Lateral amplitude for the right side showed differences between groups after appliance insertion for /s/, and 1 and 2 months after appliance insertion for the /m/ (p<0.05). Volunteers with anterior tooth wear had a wider opening movement, and the movements during speech of /m/ and /s/ sounds were not changed after appliance insertion and reconstruction of teeth.

scholarly journals Total Endoscopic Thyroidectomy with Intraoperative Laryngeal Nerve Monitoring

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Bin Lv ◽  
Bin Zhang ◽  
Qing-Dong Zeng
Keyword(s):  
Endoscopic Thyroidectomy ◽  
Risk Difference ◽  
Laryngeal Nerve ◽  
Control Group ◽  
Injury Rates ◽  
Nerve Monitoring ◽  
Hand Surgeon ◽  
Joint Application ◽  
Left And Right ◽  
The Right

Objective. To evaluate the clinical efficacy of laryngeal nerve (LN) monitoring (LNM) during total endoscopic thyroidectomy via breast approach, with emphasis on the identification rates for RLN and EBSLN and the incidence of RLN paralysis. Materials and Methods. This retrospective study included 280 patients who underwent endoscopic thyroidectomy with or without LNM. RLN and EBSLN were identified using endoscopic magnification in the control group, while they were localized additionally by LNM in the LNM group. Demographic parameters and surgical outcomes were analyzed by statistical methods. Patients in the control group were also stratified by the side of thyroidectomy to determine difference in left and right RLN injury rates. Results. All procedures were successfully conducted without permanent LN damage. The identification rates for RLN and EBSLN were high in the LNM group compared to those of the control group, and the risk difference (RD) of temporary RLN injury between two groups was 6.3%. The risk of damage was slightly higher for the left RLN than for the right RLN in the control group, which was performed by a right-hand surgeon. Conclusion. The joint application of LNM and endoscopic magnified view endows total endoscopic thyroidectomy with ease, safety, and efficiency.

scholarly journals Hemispheric Lateralization of Pain Processing by Amygdala Neurons

2009 ◽  
Vol 102 (4) ◽  
pp. 2253-2264 ◽  
Author(s):  
Guangchen Ji ◽  
Volker Neugebauer
Keyword(s):  
Receptive Fields ◽  
Hemispheric Lateralization ◽  
Central Nucleus ◽  
Recording Site ◽  
Peripheral Tissues ◽  
Arthritis Induction ◽  
Before And After ◽  
Pain State ◽  
Left And Right ◽  
The Right

Recent biochemical and behavioral data suggest right-hemispheric lateralization of amygdala functions in pain. Our previous electrophysiological studies showed pain-related neuroplasticity in the latero-capsular division of the central nucleus of the amygdala (CeLC) in the right brain hemisphere. Here we determined differences in the processing of pain-related signals in right versus left CeLC neurons. Individual CeLC neurons were recorded extracellularly before and after induction of an arthritis pain state in anesthetized rats. Brief innocuous and noxious test stimuli were applied to peripheral tissues ipsi- and contralateral to the recording site. A monoarthritis was induced in the ipsi- or contralateral knee by intraarticular injections of kaolin and carrageenan. Under normal conditions, CeLC neurons in the left amygdala had smaller receptive fields than those in the right, but the magnitude of background and evoked activity was not significantly different. After arthritis induction, neurons in the right, but not left, CeLC developed increased background activity and evoked responses, irrespective of the location of the arthritis (ipsi- or contralateral to the recording site). A protein kinase A (PKA) inhibitor decreased the activity of right CeLC neurons after arthritis induction but had no effect in the left amygdala. Forskolin, however, increased the activity of left and right CeLC neurons under normal conditions. The results show for the first time laterality of pain-related electrophysiological activity changes in individual amygdala neurons. Whereas both left and right amygdala neurons receive nociceptive inputs and can become sensitized in principle, a yet unknown mechanism prevents PKA activation and pain-related changes in the left amygdala.

scholarly journals The Influence of Altering the Morphology of the First Mandibular Molar on Functional Mandibular Movements: A Pilot Study

2021 ◽  
pp. 1-7
Author(s):  
Luminita Oancea ◽  
Ioana Monica Vâlsan ◽  
Luminita Oancea ◽  
Mihaela Rodica Păuna ◽  
Catalin Gagiu ◽  
...  
Keyword(s):  
Descriptive Analysis ◽  
Clinical Situation ◽  
Dental Morphology ◽  
Lateral Movement ◽  
Joint Pathology ◽  
Mandibular Molar ◽  
Before And After ◽  
Movement Parameters ◽  
The Right ◽  
Mandibular Movements

Purpose: Altering the tooth morphology is a frequent clinical situation and it requires replacing the lost tooth substance by direct/indirect treatment methods. The purpose of this study is to identify the optimal study group size to quantify the extent to which the change in dental morphology influences the amplitude and path of the mandibular movements at the condylar and dental level. Materials and Methods: The study was performed on 10 young participants, without associated joint pathology, with healthy complete dentition. The Zebris JMA System (Zebris Medical GmbH, Germany) condylograph were used. The condylar and occlusal parameters were registered, before and after the composite occlusal modification on the right first mandibular molar was made and data were synthesized as Excel Data. The SPSS2 software was used for statistical analyses, a descriptive analysis of the pair differences was performed, Kolmogorov-Smirnova and Shapiro-Wilk tests were applied to verify the normality, paired sample test for 0,05 level of significance and 80% power was applied to determine the proper sample size. Conclusion: The results show a change in movement parameters at both condylar and dental level: the sagittal motion of the condyle on both sides tends to have a more vertical trajectory, the incisal guidance in protrusion and the guidance in the lateral movement on the modified part are steeper, lateral movement guidance on the other side is shallower, a tendency of retrusion is noted in both condyles. Respecting original dental morphology is essential for functional harmonious integration of the restoration.

Adaptations on Physical Performance Characteristics after a 6-Month Specific Training in Rhythmic Gymnasts

2007 ◽  
Vol 22 (1) ◽  
pp. 10-17
Author(s):  
Helen Douda ◽  
Alexandra Avloniti ◽  
Athanasios Kasabalis ◽  
Savvas P Tokmakidis
Keyword(s):  
Training Program ◽  
Physical Performance ◽  
Field Measurements ◽  
Performance Characteristics ◽  
Analysis Of Covariance ◽  
Control Group ◽  
Technical Performance ◽  
Before And After ◽  
The Right ◽  
Rhythmic Gymnasts

This study examined the specific effects of a 6-month training program on the physical performance characteristics of rhythmic gymnastics (RG) athletes. Seventy-one female rhythmic gymnasts and 81 non-gymnasts (total, 152) were divided into four age categories: 8–10 yrs, 11–12 yrs, 13–14 yrs, and 15–17 yrs. Field measurements of speed, muscular strength, jumping ability, explosive power, and flexibility were made before and after a 6-month training program. The analysis of covariance, using as covariate the initial values, indicated that RG athletes attained the best scores in speed (p < 0.001), jumping ability (p < 0.001), and sit-ups (p < 0.001) and were more flexible than the control group in the sit-and-reach test (p < 0.01) and shoulder flexibility measurements (p < 0.001). In addition, gymnasts showed significant progress and obtained the highest scores in the majority of the tests as compared to the control group after 6 months of training. When measuring hip flexibility and leg lifts forward and sideward, gymnasts had better values on the right leg than the left leg. This observation shows the partial use of the right leg as the prevalent working leg as compared to the left leg which is considered the “support” leg during the performance of different exercises. These results reveal the physical performance characteristics of RG gymnasts as well as the specific adaptations attained in strength and flexibility after 6 months of training. Coaches and athletes should be aware of these findings in order to develop and maintain physical abilities sufficient for a successful technical performance in RG.

scholarly journals Observations of a Severe, Left-Moving Supercell on 4 May 2003

2005 ◽  
Vol 20 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Daniel T. Lindsey ◽  
Matthew J. Bunkers
Keyword(s):  
Rapid Motion ◽  
Before And After ◽  
Merging Process ◽  
Left And Right ◽  
The Right

Abstract A case study of a left-moving supercell with a rapid motion is presented to (i) elucidate differences in anvil orientations between left- and right-moving supercells and (ii) highlight the interaction of the left mover with a tornadic right mover. It is shown how anvil orientations, as viewed from satellite, may be used to assist in the identification of thunderstorms with differing motions and how this applies to splitting supercells. Additionally, the movement of the left mover into the forward flank of the right mover may have temporarily affected its tornadic circulation, as tornadoes occurred both before and after the merger, despite the structure of the right mover being interrupted during the merging process. Given the dearth of literature on thunderstorm mergers in general, and how mergers affect tornadic supercells in particular, this is an area that demands further research.

Effects of Acupuncture and An Agonist of Opiate Receptors on Heroin Dependent Patients

1999 ◽  
Vol 27 (02) ◽  
pp. 143-148 ◽  
Author(s):  
M. F. Timofeev
Keyword(s):  
Opiate Receptors ◽  
Acupuncture Points ◽  
Interhemisphere Asymmetry ◽  
Drug Addicts ◽  
Treatment Results ◽  
Before And After ◽  
Left And Right ◽  
Group 2 ◽  
The Right ◽  
Group 1

This study examined the influence of acupuncture and an agonist of opiate receptors (Procedol) by means of temperature in both the left and right auricular "Lung" points, and on the coefficIent of interhemisphere asymmetry. Twenty heroin dependent patients participated in this research. They were evenly divided into two groups. Both groups consisted of 10 male drug addicts (18-19 years old) who had been using heroin for 8-10 months. Group 1 received 1.0 ml procedol (i. m.). Group 2 were treated with acupuncture. Temperature was measured on the acupuncture points before and after treatment. Results of this study showed that temperature increased on the left and decreased on the right acupuncture points in both the procedol and acupuncture treated groups. The net changes before and after treatment were 92.87% and 92.53% in groups 1 and 2 respectively. The therapeutic effect of acupuncture on treatment of heroin dependence is through the same pathway as the agonist on opiate receptors, 20% of patients are resisted to acupuncture.

A Clinical Study of Acupuncture and SSP (Silver Spike Point) Electro-therapy for Dry Eye Syndrome

2006 ◽  
Vol 34 (02) ◽  
pp. 197-206 ◽  
Author(s):  
Kuo-Lieh Tseng ◽  
Hsu-Jan Liu ◽  
Kam-Yuen Tso ◽  
Lin-Chung Woung ◽  
Yi-Chang Su ◽  
...  
Keyword(s):  
Dry Eye ◽  
Dry Eye Syndrome ◽  
Control Group ◽  
Artificial Tears ◽  
Schirmer Test ◽  
Analog Scale ◽  
Treatment Groups ◽  
Significant Difference ◽  
Before And After ◽  
The Right

The present study was designed as a clinical trial to assess the efficacy of acupuncture and silver spike point (SSP) electro-therapy on dry eye syndrome. A total of 43 dry eye syndrome patients participated in the present study. Subjects were divided into control, acupuncture and SSP electro-therapy groups. The three groups were all given artificial tears treatment. Patients in the treatment groups were given two 20-minute treatments of either acupuncture or SSP. Assessment was carried out using the Basal Schirmer test, tear break-up time (BUT), visual analog scale (VAS) and an overall score of eye condition. After four weeks of treatment, both the acupuncture and SSP treatment groups showed improvements over the control group, in Schirmer tests of the left eye and average tearing of both eyes. After 8 weeks of treatment, both treatment groups showed improvements over the control group both in Schirmer tests and VAS. For the right eye, treatment groups showed significant improvements in Schirmer test and VAS versus the control group averages for both eyes. There was no significant difference in BUT at any time. Comparing scores before and after treatment, the acupuncture and SSP groups showed a significant improvement compared to the control group. The acupuncture group showed a greater 8-week improvement in Schirmer tests scores compared to the SSP group. However, the SSP group patients used fewer applications of artificial tears. Acupuncture and SSP electro-therapy were effective in increasing tear secretion in patients with dry eye syndrome. The SSP electro-therapy not only alleviated dry eye syndrome, but also reduced the number of applications of artificial tears necessary.

scholarly journals Intima-Media Thickness Measurements of the Common Carotid Artery in Patients with Central Serous Chorioretinopathy: A Case-Control Study

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Kobra Nasrollahi ◽  
Amirhossein Farahi ◽  
Fatemeh Paknazar ◽  
Mohamadreza Akhlaghi ◽  
Farhad Fazel ◽  
...  
Keyword(s):  
Central Serous Chorioretinopathy ◽  
Case Control Study ◽  
Intima Media Thickness ◽  
Case Control ◽  
Control Group ◽  
Media Thickness ◽  
Left And Right ◽  
The Difference ◽  
The Right ◽  
Control Study

Purpose. To evaluate the intima-media thickness (IMT) of the left and right common carotid arteries (CCA) as an indicator of subclinical atherosclerosis in patients with central serous chorioretinopathy (CSCR). Methods. This was a case-control study involving patients with CSCR and a matched healthy control group. The mean and difference of the left and right CCA IMT were determined and compared between the two groups using carotid duplex high-resolution B-mode ultrasound equipment. Results. The study enrolled 32 CSCR patients (68.8% female, mean age 38.22 ± 5.42 years) and 32 controls (65.6% female, mean age 39.56 ± 5.33 years). The difference in common carotid IMT between the right and left sides was significantly greater in the CSCR group than in the control group ( p < 0.001 ). Additionally, according to logistic regression analysis, patients with CSCR had a greater chance of having differences in IMT between the two sides when compared to the control group (OR: 1.29, 95% CI: 1.09–1.52). Conclusion. Our findings indicated that in the CSCR group, the difference between the right and left sides of CCA IMT was significantly greater than in the control group.

Forced Single-Nostril Breathing and Cognition

1994 ◽  
Vol 79 (3_suppl) ◽  
pp. 1499-1506 ◽  
Author(s):  
Barbara Sanders ◽  
Clairessa Lattimore ◽  
Kirsten Smith ◽  
Lisa Dierker
Keyword(s):  
Phase Ii ◽  
Cognitive Abilities ◽  
Cognitive Testing ◽  
Left Nostril ◽  
Breathing Exercise ◽  
Matching Test ◽  
Before And After ◽  
Left And Right ◽  
Forced Breathing ◽  
The Right

This experiment investigated whether forced single-nostril breathing differentially affects cognitive abilities presumed to be mediated by the left and right cerebral hemispheres. Phase I was an attempted replication of a reported sex difference in the effects of unilateral breathing on verbal versus spatial performance and Phase II was a study of breathing effects on different verbal and spatial tests. No differences associated with breathing condition were found in the replication study. In Phase II, men breathing through the right nostril scored significantly lower than men in the control condition on a letter-matching test although they did not differ significantly from men in the left-nostril condition on that test. There were no significant breathing-related differences on two spatial tests, and no differences associated with breathing condition for the women. Assessment of nostril dominance before and after cognitive testing showed that the forced-breathing exercise did not significantly alter subjects' nostril dominance. A significant left-nostril bias was found in this sample.

Effect of PSSE on postural sway in AIS using center of pressure

2021 ◽  
Author(s):  
M Selthafner ◽  
XC Liu ◽  
F Ellis ◽  
C Tassone ◽  
J Thometz ◽  
...  
Keyword(s):  
Postural Sway ◽  
Center Of Pressure ◽  
Physical Therapist ◽  
Dynamic Pressure ◽  
Pressure Sensors ◽  
Before And After ◽  
Left And Right ◽  
The Right ◽  
Peak Pressures ◽  
Anterior Posterior

We haven’t known whether the center of pressure (COP) could be considered as a better indicator in the evaluation of posture and balance change after the physiotherapeutic scoliosis specific exercise (PSSE) during level walking. The objective of this study was: 1) to determine changes in COP displacement in anterior-posterior (COP-AP) and medial-lateral (COP-ML) for AIS following the PSSE; 2) to find out COP oscillation(COP-OS) from the midline for the left and right foot; 3) to investigate max pressure at the forefoot, midfoot and hindfoot bilaterally. AIS patients with three reflective markers on their back walked on the pressure sensors embedded treadmill at 2 km/h and their trunks were also registered by DIERS Formetric 4D system. Each child received the PSSE for 12 weeks by the same physical therapist and had a dynamic pressure analysis before and after the PSSE. Six AIS children at a mean age of 13 years and with averaged major Cobb angle of 26° were enrolled. There was an increase in COP-AP (15%) and a decrease in the COP-ML (-25%) following the PSSE. COP-OS on the left foot shifted farther away from the midline (about 16%) as the right side moved closer (-1%), which becomes more symmetrical (Pre-PSSE: 0.86mm & Post-PSSE: 0.32mm). There were increased pressures on the left (35%) and right (26%) hallux after PSSE. Pressure metrics, especially including COP-ML, COP-AP, COP-OS, and peak pressures on the forefoot, may be opted as optimal predictors to posture improvements by the means of PSSE.

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