scholarly journals Improvement of masticatory kinematic parameters after correction of unilateral posterior crossbite: Reasons for functional retention

2017 ◽  
Vol 87 (6) ◽  
pp. 871-877 ◽  
Author(s):  
Maria Grazia Piancino ◽  
Maria Cordero-Ricardo ◽  
Rosangela Cannavale ◽  
Teresa Vallelonga ◽  
Umberto Garagiola ◽  
...  
Keyword(s):  
Kinematic Parameters ◽  
Functional Appliance ◽  
Normal Range ◽  
Posterior Crossbite ◽  
Before And After ◽  
The Right ◽  
The University

ABSTRACT Objective: To evaluate reverse-sequencing chewing cycles (RSCC) and their kinematic parameters on both sides before and after correction with the Function Generating Bite (FGB) appliance. Materials and Methods: Forty-seven patients, 8.3 ± 1.1 (mean ± SD) years of age, with unilateral posterior crossbite (35 on the right side, 12 on the left side) and 18 age-matched controls (9.1 ± 0.8 years) were selected for the study from the orthodontic division of the University of Turin, Italy. The crossbite was corrected in all patients using FGB, and mandibular motion was recorded with a kinesiograph K-7 (Myotronics, Tukwila, Wash), during chewing on both sides of a soft and a hard bolus before and after correction. Results: After correction, the percentage of RSCC significantly decreased for soft and hard (P < .001) boluses and fell within the normal range for 75% of the patients. The indices of the chewing pattern (closure angle, axis, maximum lateral excursion) significantly improved (P < .001), becoming symmetric between sides. Conclusions: The results of this study showed that the functional appliance, FGB, was able to lower the percentage of RSCC significantly, bringing them back to the normal range in 75% of cases, and to improve the kinematic parameters that become symmetric between sides.

Lung and chest wall impedances in the dog in normal range of breathing: effects of pulmonary edema

1992 ◽  
Vol 73 (3) ◽  
pp. 1040-1046 ◽  
Author(s):  
G. M. Barnas ◽  
D. Stamenovic ◽  
K. R. Lutchen
Keyword(s):  
Oleic Acid ◽  
Pulmonary Edema ◽  
Chest Wall ◽  
Mean Airway Pressure ◽  
Normal Range ◽  
Normal Ranges ◽  
Before And After ◽  
Measured Resistance ◽  
The Right ◽  
Severe Pulmonary Edema

We evaluated the effect of pulmonary edema on the frequency (f) and tidal volume (VT) dependences of respiratory system mechanical properties in the normal ranges of breathing. We measured resistance and elastance of the lungs (RL and EL) and chest wall of four anesthetized-paralyzed dogs during sinusoidal volume oscillations at the trachea (50–300 ml, 0.2–2 Hz), delivered at a constant mean airway pressure. Measurements were made before and after severe pulmonary edema was produced by injection of 0.06 ml/kg oleic acid into the right atrium. Chest wall properties were not changed by the injection. Before oleic acid, EL increased slightly with increasing f in each dog but was independent of VT. RL decreased slightly and was independent of VT from 0.2 to 0.4 Hz, but above 0.4 Hz it tended to increase with increasing flow, presumably due to the airway contribution. After oleic acid injection, EL and RL increased greatly. Large negative dependences of EL on VT and of RL on f were also evident, so that EL and RL after oleic acid changed two- and fivefold, respectively, within the ranges of f and VT studied. We conclude that severe pulmonary edema changes lung properties so as to make behavior VT dependent (i.e., nonlinear) and very frequency dependent in the normal range of breathing.

scholarly journals Periodontal clinical evaluation before and after surgically assisted rapid maxillary expansion

2018 ◽  
Vol 23 (1) ◽  
pp. 79-86 ◽  
Author(s):  
Michelle Sendyk ◽  
Wilson Roberto Sendyk ◽  
Débora Pallos ◽  
Letícia Cristina Cidreira Boaro ◽  
João Batista de Paiva ◽  
...  
Keyword(s):  
Gingival Recession ◽  
Rapid Maxillary Expansion ◽  
Central Incisor ◽  
Maxillary Expansion ◽  
Clinical Attachment Level ◽  
Posterior Crossbite ◽  
Attached Gingiva ◽  
Before And After ◽  
The Right ◽  
Attachment Level

ABSTRACT Introduction: The surgically assisted rapid maxillary expansion is a procedure that reduces the resistance of the sutures correcting the posterior crossbite in adults. Objective: The aim of this study was to evaluate the periodontal status of 17 adults submitted to this procedure. Methods: The clinical attachment level (CAL), gingival recession, attached gingiva and bleeding were evaluated in maxillary first premolars and molars, central and lateral incisors of right and left sides before surgery, 5 days and 6 months after. Means, standard deviation, medians, minimum and maximum values were compared among the evaluations using the Friedman and McNemar tests. Results: There was a statistically significant increase in CAL in the right central incisor, right and left premolars and right and left molars. There was a statistically significant increase in gingival recession in the right and left premolars and molars. The amount of attached gingiva significantly decreased in right premolars and right and left molars. There was increase in bleeding in most of the teeth. Conclusion: Results indicated that the surgically assisted rapid maxillary expansion might cause alterations in periodontal tissue.

scholarly journals Peningkatan Kemampuan Mahasiswi dalam Berbicara Bahasa Arab di Ma’had Al-Jami’ah UIN Ar-Raniry

2017 ◽  
Vol 16 (2) ◽  
pp. 211
Author(s):  
Abizar Abizar
Keyword(s):  
Random Sampling ◽  
Communication Skill ◽  
Arabic Language ◽  
International Communication ◽  
University Student ◽  
Reading And Writing ◽  
Before And After ◽  
Post Test ◽  
The Right ◽  
The University

Language is means that needs to be mastered well by the students as an academician to support their ability and success in the educational atmosphere. Arabic language as an International communication language has become a compulsory that have to be mastered especially by the university student of Ma’had Al-Jami’ah at Ar-Raniry State Islamic University (UIN Ar-Raniry). Apart from reading and writing, the most important aspect to master this language skill is using Arabic language in daily conversation orally. In this case, Ma’had Al-Jami’ah is the right place to apply the communication skill of Arabic Language. The aim of this research is to know the various programs of Ma’had Al-Jami’ah and its implementation as well as to know the learning result of the students of UIN Ar-Raniry whether before and after implementation of those various programs. The method used in this research was analysis descriptive. The researcher also used random sampling with 454 samples that consist of three batches. The instrument used in collecting data is direct observation, interview, documents analysis, and test. The finding of this research as follows: the implementation of those various program of Ma’had Al-Jami’ah UIN Ar-Raniry could increase the students’ ability in speaking and beneficial also very helpful for them to increase their ability in speaking. In addition, those programs have significant role in order to increase their ability in speaking, it was suited with their pre test and post test analyzed by the researcher. The students who passed in pre test was 63% and failed was 37%, while students who passed in post test was 88% and failed was 12%.

Systemic Absorption of Gentamicin Nasal Irrigations

2006 ◽  
Vol 20 (3) ◽  
pp. 251-254 ◽  
Author(s):  
W. Stites Whatley ◽  
Rakesh K. Chandra ◽  
C. Bruce MacDonald
Keyword(s):  
Otoacoustic Emissions ◽  
Pure Tone Audiometry ◽  
Sinus Surgery ◽  
Systemic Absorption ◽  
Normal Range ◽  
Nasal Irrigation ◽  
Distortion Product ◽  
Patient Reported ◽  
Before And After ◽  
The Right

Objective To determine if gentamicin nasal irrigation is systemically absorbed, and to identify any ototoxic side effects related to its use. Design Retrospective review of 12 patients treated with gentamicin nasal irrigations (30 cc of 80 mg/L solution used bilaterally twice daily). Methods Serum gentamicin levels were assayed after the course treatment. Pure tone audiometry (250–8000 Hz) and distortion product otoacoustic emissions (DP-OAEs) at 7280, 5133, 3640 and 2560 Hz were obtained before and after therapy. Results Twelve patients (age 4 to 74, mean 43) with chronic rhinosinusitis were treated for 3–15 weeks (mean 7 weeks). All patients had undergone previous endoscopic sinus surgery. Ten patients had pretreatment cultures that grew organisms sensitive to gentamicin (Pseudomonas, Proteus, or methacillin resistant Staphylococcus aureus), and three patients had cystic fibrosis. Ten of 12 patients (83%) had detectable posttreatment levels of gentamicin, with a mean serum level of 0.42 mcg/mL (range 0.3 to 0.7 mcg/mL). Four of 12 patients (33%) had serum gentamicin levels within the normal range for gentamicin trough (0.5 to 2 mcg/mL). Comparison of pre- and posttreatment audiologic data revealed no significant change in PTA or DP-OAE, except for the right ear at 8000 Hz on PTA (p = 0.035) where a mean of 7 dB loss was observed. No patient reported hearing loss or vertigo during treatment. Conclusion Gentamicin nasal irrigation may be systemically absorbed. Although the otologic consequences of this finding are questionable, patients receiving gentamicin nasal irrigations should be counseled regarding this hypothetical possibility.

scholarly journals Effects of Rapid Palatal Expansion on Chewing Biomechanics in Children with Malocclusion: A Surface Electromyography Study

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2086
Author(s):  
Fabiola Spolaor ◽  
Martina Mason ◽  
Alberto De Stefani ◽  
Giovanni Bruno ◽  
Ottavia Surace ◽  
...  
Keyword(s):  
Surface Electromyography ◽  
Healthy Subjects ◽  
Subsequent Growth ◽  
Activation Patterns ◽  
Palatal Expansion ◽  
Posterior Crossbite ◽  
Rapid Palatal Expansion ◽  
Different Types ◽  
Before And After ◽  
The Right

Malocclusion during childhood may affect both morphology and masticatory function and could greatly affect the subsequent growth and development of the jaws and face. The purpose of this study was to evaluate the efficiency of surface electromyography in describing the effects of the rapid palatal expansion (RPE) on Masseter (M) and Temporalis Anterior (T) muscles’ activity in 53 children with different types of malocclusion: bilateral posterior crossbite (BPcb), underdeveloped maxillary complex without crossbite (NOcb) and unilateral posterior crossbite on the right (UPCBr) and on the left (UPCBl). The muscular activities during chewing tasks were assessed bilaterally before and after RPE application and three months after removal. Both the envelope’s peak (µV) and its occurrence (% of chewing task) were extracted from the surface electromyography signal. Our results showed the presence of statistically significant differences (p < 0.05) on temporomandibular joint muscles, across different assessments, in all the tested populations of subjects. Surface electromyography demonstrated a relationship between the correction of a maxillary transverse discrepancy and the restoration of a muscle’s activation patterns comparable to healthy subjects for both T and M.

scholarly journals The effects of preparation period exercises on the hematological parameters of the taekwondo athletes

2018 ◽  
Vol 23 (1) ◽  
pp. 9-15 ◽  
Author(s):  
E. Boyalı ◽  
T. Sevindi ◽  
M.F. Yüksel ◽  
H. Demir
Keyword(s):  
Hematological Parameters ◽  
Exercise Program ◽  
Important Change ◽  
Male Athletes ◽  
Blood Samples ◽  
Before And After ◽  
Elite Level ◽  
Preparation Period ◽  
The Right ◽  
The University

Purpose: This study aimed at examining the effects of preparation period exercises, which were applied for eight weeks to elite level taekwondo athletes, on the hematological parameters. Material: Totally 21 athletes with international degrees from the university taekwondo team participated in this study, 12 of whom were female (Mean age: 20.3 - Mean exercise age: 8.8) and 9 of whom were male athletes (Mean age: 20.3 - Mean exercise age: 9.5). The participants attended an 8-week exercise program for 5 days a week, which included basic motoric features and technical and tactical development. 4 cc blood samples were taken from the right antecubital vein before and after the preparation period exercises. On the blood samples, WBC, GRAN, GRAN %, LYM, LYM %, MID and MID % values were examined among leukocyte sub-groups; RBC, HGB, HCT, MCV, MCH, MCHC and RDWC values were examined among the erythrocyte sub-groups, and PLT, MPV, PCT and PDW values were examined among thrombocyte sub-groups. Results: At the end of the study, we determined that there was a statistically significant increase in the MCHC values of both the male and the female taekwondo athletes. Moreover, it was determined that there were statistically significant decreases in the HCT, MCV, MCH, MPV and PCT values of the female taekwondo athletes, and in the MCV, MPV and PCT values of the male taekwondo athletes. Conclusions: As a conclusion, we can state that the 8-week exercises applied during the preparation period affected the hematological parameters of the male and female taekwondo athletes to an extent, however, this effect was limited and it did not cause an important change.

Low temperature x-ray microanalysis of frozen-hydrated tobacco leaves

1984 ◽  
Vol 42 ◽  
pp. 284-285
Author(s):  
S. Edith Taylor ◽  
Patrick Echlin ◽  
May McKoon ◽  
Thomas L. Hayes
Keyword(s):  
Low Temperature ◽  
Lemna Minor ◽  
Root Tips ◽  
Tobacco Leaves ◽  
X Ray ◽  
Whole Cells ◽  
Carbon Coated ◽  
The Right ◽  
Beam Currents ◽  
The University

Low temperature x-ray microanalysis (LTXM) of solid biological materials has been documented for Lemna minor L. root tips. This discussion will be limited to a demonstration of LTXM for measuring relative elemental distributions of P,S,Cl and K species within whole cells of tobacco leaves.Mature Wisconsin-38 tobacco was grown in the greenhouse at the University of California, Berkeley and picked daily from the mid-stalk position (leaf #9). The tissue was excised from the right of the mid rib and rapidly frozen in liquid nitrogen slush. It was then placed into an Amray biochamber and maintained at 103K. Fracture faces of the tissue were prepared and carbon-coated in the biochamber. The prepared sample was transferred from the biochamber to the Amray 1000A SEM equipped with a cold stage to maintain low temperatures at 103K. Analyses were performed using a tungsten source with accelerating voltages of 17.5 to 20 KV and beam currents from 1-2nA.

Comparative Arterial Antithrombotic Activity of Clopidogrel and Acetyl Salicylic Acid in the Pig

1992 ◽  
Vol 68 (05) ◽  
pp. 500-505 ◽  
Author(s):  
Ch M Samama ◽  
Ph Bonnin ◽  
M Bonneau ◽  
G Pignaud ◽  
E Mazoyer ◽  
...  
Keyword(s):  
Platelet Aggregation ◽  
Femoral Artery ◽  
Bleeding Time ◽  
Ex Vivo ◽  
Flow Reduction ◽  
Cyclic Flow ◽  
Left Femoral Artery ◽  
Before And After ◽  
The Right ◽  
Induced Aggregation

SummaryWe investigated the comparative antithrombotic properties of clopidogrel, an analogue of ticlopidine, and aspirin, using the Folts' model on femoral arteries in 22 pigs. On each animal, clopidogrel or aspirin were used to treat the thrombotic process on the left femoral artery and to prevent this process on the right femoral artery. Sequentially: an injury and stenosis were carried out on the left femoral artery; the thrombotic process was monitored with a Doppler during a 30-min observation period for cyclic flow reductions or permanent cessation of flow; after the first cyclic flow reduction occurred, clopidogrel (5 mg kg-1) or aspirin (2.5, 5, 100 mg kg-1) were injected intravenously; if cyclic flow reductions were abolished, epinephrine (0.4 µg kg-1 min-1) was injected to try to restore cyclic flow reductions and/or permanent cessation of flow; then injury and stenosis were applied on the right femoral artery. Before and after injection of clopidogrel or aspirin, ear immersion bleeding times and ex-vivo platelet aggregation were performed. Clopidogrel (n = 7) abolished cyclic flow reductions in all animals and epinephrine did not restore any cyclic flow reduction. On the right femoral artery, cyclic flow reductions were efficiently prevented, even for two injuries. Basal bleeding time (5 min 28) was lengthened (>15 min, 30 min after clopidogrel and remained prolonged even after 24 h). ADP-induced platelet aggregation was inhibited (more than 78%). Comparatively, aspirin had a moderate and no dose-dependent effect. Aspirin 2.5 mg kg-1 (n = 6) abolished cyclic flow reductions in 2 animals, CFR reoccurred spontaneously in one animal and epinephrine restored it in a second animal. Aspirin 5 mg kg-1 (n = 6) abolished cyclic flow reductions in only 3 animals and epinephrine always restored it. Aspirin 100 mg kg-1 (n = 3) was unable to abolish cyclic flow reductions. On the right femoral artery, aspirin did not significantly prevent cyclic flow reductions which occurred in all animals after one (n = 14) or two injuries (n = 1), except for one animal. Basal bleeding time was lengthened but it shortened rapidly, reaching its basal value after 24 h. ADP-induced aggregation was not significantly inhibited, whereas arachidonic acid induced aggregation was always inhibited. Clopidogrel appears as a more potent antithrombotic drug than aspirin in this model, in treating and preventing spontaneous or epinephrine-induced cyclic flow reductions and lengthening bleeding time.

EFEKTIVITAS METODE DEMONSTRASI DALAM MENINGKATKAN HASIL BELAJAR SISWA SEKOLAH MENENGAH KEJURUAN PADA PENGAJARAN SISTEM KOLOID

2013 ◽  
Vol 19 (1) ◽  
pp. 28
Author(s):  
Hamda Situmorang ◽  
Manihar Situmorang
Keyword(s):  
High School ◽  
High School Students ◽  
Abstract Concept ◽  
Vocational High School ◽  
School Students ◽  
Lecture Method ◽  
Colloid System ◽  
Before And After ◽  
The Right ◽  
And Control

Abstract Implementation of demonstration method in the teaching of chemistry is assigned as the right strategy to improve students’ achievement as it is proved that the method can bring an abstract concept to reality in the class. The study is conducted to vocational high school students in SMKN1 Pargetteng getteng Sengkut Pakfak Barat at accademic year 2013. The teaching has been carried out three cycles on the teaching of chemistry topic of colloid system. In the study, the class is divided into two class, experiment class and control class. The demontration method is used to teach students in experimental class while the teaching in control class is conducted with lecture method. Both are evaluated by using multiple choise tests before and after the teaching procedures, and the ability of students to answer the problems are assigned as students’ achievements. The results showed that demonstration method improved students’ achievement in chemistry. The students in experimental class who are taughed with demonstration method (M=19.08±0.74) have higher achievements compare with control class (M=12.91±2.52), and both are significantly different (tcalculation 22.85 > ttable 1.66). The effectivity of demostration method in experimental class (97%) is found higer compare to conventional method in control class (91%).

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