Comparison of Repeated Chemical and Microwave Disinfection on Dimensional Accuracy of Gypsum Casts

2021 ◽  
Vol 30 (04) ◽  
pp. 235-242
Author(s):  
Mariya Khalid ◽  
◽  
Mohammad Ali Chughtai ◽  
Sohrab Shaheed ◽  
Syed Nasir Shah
Keyword(s):  
Sample Size ◽  
Sodium Hypochlorite ◽  
Dimensional Accuracy ◽  
Dimensional Change ◽  
Control Group ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Group A ◽  
Group B

OBJECTIVE: The aim of this experimental study is to compare the dimensional accuracy of gypsum casts after repeated disinfection in microwave at 900 Watts, 2450 MHz (5 minutes) and immersion in 0.5% Sodium hypochlorite (10 minutes). Disinfecting casts is recommended to prevent cross infection but may cause dimensional changes. During fabrication of prosthesis, a cast may get contaminated several times so there is a need of repeated disinfection. METHODOLOGY: Sample size was 33 (11 in each group), calculated through WHO software for sample size determination by using standard deviation of 0.16 at 95% confidence interval and 80% power of study. Impressions in irreversible hydrocolloid were recorded of an acrylic cast fabricated for this study. The impressions were poured with die stone and were randomly divided into 3 groups; Group I: Microwave disinfection, Group II: Immersion disinfection in 0.5% Sodium hypochlorite, Group III: Control group. For Groups I and II, each cast was disinfected 7 times with 5 minutes interval between two disinfection cycles, after every cycle anteroposterior and mediolateral measurements were recorded using digital Vernier caliper (accuracy upto 0.01 mm). For group III, casts were rinsed with distilled water, dried in open air within temperature range of 28+/-2OC for 10 mins followed by anteroposterior and mediolateral measurements. This procedure was repeated seven times for each cast. RESULTS: Anteroposterior and Mediolateral differences of dimensional change between and within the Group A, B and C was calculated by One Way ANOVA. Inter/intra examiner reliability was taken into consideration at the time of study. Mean dimensional change in the casts were insignificant through six disinfecting cycles. However, in the seventh cycle, a significant difference (p=0.003) was observed in the anteroposterior dimension (0.03% dimensional change for Group A and 1.26 % for Group B whereas, in mediolateral dimension, dimensional change was 0.35% for Group A and 0.59% for Group B (p=0.004). Dimensional change of >0.5% was considered as the cutoff value for casts to be considered as dimensionally accurate. Casts disinfected through immersion disinfection did not produce dimensionally inaccurate casts in anteroposterior dimension after third cycle and in seventh cycle in mediolateral dimension. However, result is significant only in seventh cycle. Microwave disinfection produced dimensionally accurate casts throughout all cycles. CONCLUSION: Microwave disinfected casts remained dimensionally stable compared to immersion disinfection. KEYWORDS: Disinfection, microwave, immersion, dimensional stability, gypsum casts

Comparative Study to Evaluate the Surface Detail Reproduction of Dental Stone after Immersion in Various Different Disinfectant Solutions, Under Stereomicroscope 10 X Magnification –An In-Vitro Study

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Rathika Rai ◽  
M. A. Easwaran ◽  
K. T. Dhivya
Keyword(s):  
Sodium Hypochlorite ◽  
In Vitro Study ◽  
Control Group ◽  
Immersion Method ◽  
Significant Difference ◽  
Surface Irregularities ◽  
Disinfectant Solution ◽  
Surface Detail ◽  
Group B

Aim: To evaluate the surface detail reproduction of dental stone this is immersed in different disinfectant solution and studied under stereomicroscope. Methodology: Total number of 30 specimens of dental stone (Type III) were made with measurements of 1.5cm diameter and 1cm height .This samples are divided in to 3 groups group A,B,C. were A is immersed in Distilled water which was taken as control group ;B is immersed in 2% Glutaraldehyde and C is immersed in 5%sodium hypochlorite. Each specimen were immersed in the disinfectant solution for 15 minutes and dried under room temperature for 24 hrs. After 24 hrs each specimens are studied under stereomicroscope for surface details. Result: The results showed no significant difference in the surface irregularities and porosities for a group 1 and group 2 except group 3 which showed significant increase in the porosities, surface irregularities and erosions after disinfection with 5% NaHOCl by immersion method. Conclusion: The surface detail reproduction capacity of die stone was adversely affected when 5% Sodium hypochlorite was used as disinfectant solution when compare d to control group and 2% Glutaraldehyde

Clinical effect of Suvarna Bindu Prashan

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Patil Aniket ◽  
Dindore Pallavi ◽  
Arbar Aziz ◽  
Kadam Avinash ◽  
Saroch Vikas
Keyword(s):  
Physical Health ◽  
Eating Habits ◽  
Control Group ◽  
Inform Consent ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Immune Booster ◽  
Mental And Physical Health ◽  
Apparently Healthy

The quest for excellence in mental and physical health is not new. We find various references and formulations in Ayurvedic classics meant for promoting mental and physical health of a child. Suvarna Prashan is one of the formulations explained in age old Ayurvedic classic Kashyap Samhita. This formulation is very widely used now days as a memory and immune booster for children. But there is very little systematic documented study which can be used to evaluate the efficacy of the formulation. Suvarna Bhasma was prepared in Ayurved Rasayani Pharmacy, Pune. Madhu and Ghrita were collected from KLE Ayurveda Pharmacy, Belgaum. Suvarna Bindu Prashan was prepared in KLE Ayurved pharmacy, Belgaum. It contains Suvarna Bhasma, Ghrita and Madhu. Twenty apparently healthy male and female children with age group of three to four years were ready to sign inform consent form were selected into two groups each. Subjects in Group A received Suvarna Bindu Prashan where as Group B (Control group) did not receive any treatment. Both the groups were observed for six months. Children in Suvarna Bindu Prashan group showed significant reduction in the scores of eating habits, behavior, mood, temperament and scores of event of illness. However there was no significant difference in the score of sleeping habit. There was significant increase in IQ percentage.

EFFECT OF YOGA ON CARDIOVASCULAR EFFICIENCY

2019 ◽  
pp. 12-16
Author(s):  
Brij Bhushan Singh ◽  
Shubi Mirja ◽  
Samiya Husain
Keyword(s):  
Statistical Technique ◽  
Step Test ◽  
Control Group ◽  
Significant Difference ◽  
Post Test ◽  
Group A ◽  
Cardio Vascular ◽  
Level Of Significance ◽  
Group B ◽  
Experimental Group

The purpose of this study was to investigate the effects of yogic practices on cardio-vascular efficiency. Material and methods: Total Forty (40) subject’s boys/girls were selected as the sample of the study through the random sampling and their age ranged between 20 to 25 years from the Department of Physical Education, Aligarh Muslim University, Aligarh. The subjects were divided into two groups comprising 20 subjects in each group, namely group “A” (the experimental group) performs yogic practices (Asanas, Pranayamas and Kriyas) and group “B” (the control group) served as control. Statistical technique: for the assessment of the cardiovascular efficiency through Harvard step test pre and post-test was conducted and t-test was applied for the analysis. Result: revealed that there exist a significant difference between group A and group B, at .05 level of significance. On the basis of the pre and post-test among experimental and control group, experimental group found better than the control group on cardiovascular efficiency and significant result were found in this study.

Resorbable Collagen Barrier Impeding the Extrusion of Obturating Material in Primary Molars Undergoing Resorption – A Randomized Clinical Trial

2021 ◽  
Vol 45 (5) ◽  
pp. 312-316
Author(s):  
Mishra Neha Sanjeev ◽  
Harsimran Kaur ◽  
Sandeep Singh Mayall ◽  
Rishika ◽  
Ramakrishna Yeluri
Keyword(s):  
Test Group ◽  
Primary Molars ◽  
Control Group ◽  
Chi Square ◽  
Significance Level ◽  
Significant Difference ◽  
Chi Square Test ◽  
Group A ◽  
Group B ◽  
And Control

Objective: To evaluate the effectiveness of placing a resorbable collagen barrier in impeding the extrusion of obturation material in primary molars undergoing resorption. Study design: All the 94 canals in 47 mandibular molars were allocated to 2 groups- Group ‘A’- 47 canals with collagen barrier (Test group) and Group ‘B’- 47 canals without collagen barrier (Control group) based on randomization protocol. Pulpectomy was performed and obturation of both test and control canals were radiographically assessed. Pearson’s chi – square test was applied to analyze the results. The significance level was predetermined at p < 0.05. Results: Among the test group, 93.6% of the canals showed no extrusion while, 6.4% showed visible extrusion of the material outside the apex. In the control group, 83% showed no extrusion whereas 17% of the canals showed visible extrusion outside the apex. But no significant difference was noted (p>0.05). Conclusion: The placement of resorbable collagen barrier in the apical third of the canal prevented the extrusion of obturating material beyond the apex in resorbing primary molars.

Impact of supplementing commercial rabbit pellets with fresh Moringa oleifera leaves on semen characteristics in rabbit bucks under tropical climate in Trinidad

2021 ◽  
Author(s):  
Krishna Mohan Kumar
Keyword(s):  
Sperm Motility ◽  
Moringa Oleifera ◽  
Sperm Count ◽  
Control Group ◽  
Computer Assisted ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Moringa Oleifera Leaves ◽  
The Impact

Objective This study aimed to evaluate the impact of the dietary supplement of Moringa oleifera leaves (MOL) on semen quality and characteristics in rabbits. Methods Eighteen (n=18) breeding bucks of New Zealand white, of similar age group, were used for the study. Three feeding regimes, (i) 100% commercial rabbit pellets (CRP)-Group I (ii) 90% CRP + 10% fresh MOL on a dry matter (DM) basis – Group II and (iii) 80% CRP + 20% fresh MOL on a DM basis – Group III, were adopted and the trial continued for 21 days. After adaptation to the diet, semen was collected from each buck and subjected to evaluation using a computer-assisted semen analyser. Results In Group III, the sperm count, normal sperm morphology, and sperm motility increased (52.0%) in comparison with the control (Group I; 50.1%). The inclusion of 20% Moringa oliefera in the diet (Group III) caused a significant increase (P<0.05) in semen concentration (Control =136.2 M/mL; Group III=297.2 M/mL). There was no significant difference (P>0.05) in sperm motility and semen volume among the groups. Conclusion The results suggest that supplementing commercial rabbit pellets with 20% fresh Moringa oliefera leaves on a DM basis can improve the quality and characteristics of semen in breeding bucks.

scholarly journals Correlation between angiographic transit times and neurological status on admission in patients with aneurysmal subarachnoid hemorrhage

2016 ◽  
Vol 124 (4) ◽  
pp. 1093-1099 ◽  
Author(s):  
Alexander Ivanov ◽  
Andreas Linninger ◽  
Chih-Yang Hsu ◽  
Sepideh Amin-Hanjani ◽  
Victor A. Aletich ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Cerebral Artery ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Clinical Information ◽  
Control Group ◽  
Angiography Suite ◽  
Transit Times ◽  
Significant Difference ◽  
Group A ◽  
Group B

OBJECT The use of digital subtraction angiography (DSA) for semiquantitative cerebral blood flow(CBF) assessment is a new technique. The aim of this study was to determine whether patients with aneurysmal subarachnoid hemorrhage (aSAH) with higher Hunt and Hess grades also had higher angiographic contrast transit times (TTs) than patients with lower grades. METHODS A cohort of 30 patients with aSAH and 10 patients without aSAH was included. Relevant clinical information was collected. A method to measure DSA TTs by color-coding reconstructions from DSA contrast-intensity images was applied. Regions of interest (ROIs) were chosen over major cerebral vessels. The estimated TTs included time-to-peak from 0% to 100% (TTP0–100), TTP from 25% to 100% (TTP25–100), and TT from 100% to 10% (TT100–10) contrast intensities. Statistical analysis was used to compare TTs between Group A (Hunt and Hess Grade I-II), Group B (Hunt and Hess Grade III-IV), and the control group. The correlation coefficient was calculated between different ROIs in aSAH groups. RESULTS There was no difference in demographic factors between Group A (n = 10), Group B (n = 20), and the control group (n = 10). There was a strong correlation in all TTs between ROIs in the middle cerebral artery (M1, M2) and anterior cerebral artery (A1, A2). There was a statistically significant difference between Groups A and B in all TT parameters for ROIs. TT100–10 values in the control group were significantly lower than the values in Group B. CONCLUSIONS The DSA TTs showed significant correlation with Hunt and Hess grades. TT delays appear to be independent of increased intracranial pressure and may be an indicator of decreased CBF in patients with a higher Hunt and Hess grade. This method may serve as an indirect technique to assess relative CBF in the angiography suite.

scholarly journals Laser Speckle Imaging of Sensitized Acupoints

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Ning Ding ◽  
Jing Jiang ◽  
Xiaoxiao Liu ◽  
Yiyuan Xu ◽  
Jiatong Hu ◽  
...  
Keyword(s):  
Blood Perfusion ◽  
Laser Speckle ◽  
Control Group ◽  
Functional Changes ◽  
Pathological Conditions ◽  
Sd Rats ◽  
Significant Difference ◽  
Group A ◽  
Severity Of The Disease ◽  
Group B

Acupoints microcirculatory dynamics vary depending on the body’s health status. However, the functional changes observed during acupoint sensitization, that is, the disease-induced change from a “silenced” to an “activated” status, remain elusive. In this study, the microcirculatory changes at acupoints during sensitization were characterized. Thirty SD rats were randomly divided into five groups: normal control group (N), sham osteoarthritis group (S), light osteoarthritis group (A), mild osteoarthritis group (B), and heavy osteoarthritis group (C). The obtained results showed that the blood perfusion levels at the acupoints Yanglingquan (GB34), Zusanli (ST36), and Heding (EX-LE2) in groups A, B, and C were higher than those in groups N and S on days 14, 21, and 28 (p < 0.01 or p < 0.05). A significant difference in the blood perfusion was also observed at the acupoint Weizhong (BL40) in groups B and C on days 21 and 28 (p < 0.01). In addition, remarkable differences in the level of blood perfusion at the GB34, ST36, and EX-LE2 acupoints were observed on day 28 (p < 0.01 or p < 0.05) among groups A, B, and C. No marked differences in blood perfusion levels were observed at the nonacupoint site among all groups. In conclusion, acupoint sensitization is associated with an increase in the level of local blood perfusion at specific acupoints, and this increase is positively correlated with the severity of the disease. The functional changes in microcirculation at acupoints during sensitization reflect the different physiological and pathological conditions imposed by the disease.

scholarly journals Surgery for primary intracerebral haemorrhage: is it safe and effective?

2013 ◽  
Vol 38 (3) ◽  
pp. 74-78
Author(s):  
MMH Talukder ◽  
KMT Islam ◽  
M Hossain ◽  
MU Jahan ◽  
F Mahmood ◽  
...  
Keyword(s):  
Intracerebral Haemorrhage ◽  
Glasgow Outcome Scale ◽  
Control Group ◽  
Intracerebral Haematoma ◽  
College Hospital ◽  
Conservative Group ◽  
Best Medical Treatment ◽  
Significant Difference ◽  
Group A ◽  
Group B

This prospective study was conducted to compare the outcome between medical and surgical treatment of primary intracerebral haemorrhage at the department of Neurosurgery, Dhaka Medical College Hospital from January 2006 to October 2007. All patients with primary intracerebral haematoma with Glasgow Coma Scale (GCS) 5-15 (on admission) and heamatoma volume 30 cc or above admitted at Neurosurgery department managed conservatively or surgically were included in this study. Total 60 patients were selected, of them 30 patients managed conservatively and 30 patients managed surgically. Conservatively managed patients regarded as control group (Group-A) and surgically managed patients regarded as experimental group (Group-B). Patients or attendants refused to operate were included in the conservative group. All the selected patients were evaluated on the basis of detailed history, clinical examination (general and neurological examination) and CT scan findings. Outcome was evaluated in term of Glasgow Outcome Scale (GOS). Best medical treatment was given for conservative group and operations were done for surgical group and followed up after surgery till discharge by observing GCS and GOS at discharge. Number of death were 15 (50%) patients in group- A and 13 (43%) patients in group-B. There was no significant difference in mortality rate between two groups but outcome was relatively better in group-B. According to Glasgow Outcome Scale, dependency in group-A and group-B was 26.6% and 23.4% respectively. So dependency were more in group-A. But there was no significant difference statistically. Seven (23.4%) patients were independent in group-A but 10(43.3%) patients were independent in group-B. However in relative terms of outcome of group-B was better than that of group-A. In our study we found no statistically significant difference in outcome between medical and surgical management of primary intracerebral haemorrhage. DOI: http://dx.doi.org/10.3329/bmrcb.v38i3.14328 Bangladesh Med Res Counc Bull 2012; 38(3): 74-78 (December)

scholarly journals Maintenance treatment of diabetic patients, associating arterial obstructive tibio-peroneal disease

1995 ◽  
Vol 113 (1) ◽  
pp. 701-705
Author(s):  
Nelson Wolosker ◽  
Ruben Miguel Ayzin Rosoky ◽  
Baptista Muraco Neto ◽  
Berilo Langer
Keyword(s):  
Maintenance Treatment ◽  
Diabetic Patients ◽  
Type I ◽  
Group I ◽  
Significant Difference ◽  
Therapeutic Procedures ◽  
Arterial Pulsation ◽  
Group A ◽  
Group B ◽  
Better Than

When a melito-diabetic patient presents trophic infected injury on the limb, it is essential an evaluation of the circulatory conditions for therapeutic procedures orientation. In some circumstances, although arterial pulsation is absent, there is no ischemia of tissues. In these cases, the maintenance treatment, with eventual resection of the necrosed and infected tissues may be adopted. Evolution of 70 diabetic patients with trophic injuries on extremities were submitted to a maintenance treatment. Age of patients varied from 28 to 88 years, with an average of 56.8. The most occurrence was verified in women, with 42 cases. Diabetes non-dependant on insuline (type II) was observed in 64 patients (91.5%), being the remaining 6 patients of type I. Diabetic retinopathy was observed in 14 (20%) of the patients, neuropathy in 22 (31%) and nephropathy in 8 patients (11.4%). All the patients presented arterial pulsation until the popliteal region. They were divided in 2 groups, considering trunk arteries of legs: Group I, pervial legs arteries, composed by 48 patients; Group II, occluded legs arteries, with 22 patients. In what refers to the anatomic local of the injuries, patients were classified in three groups: Group A, formed by 32 patients (45.7%), presenting injuries in one or two toes only, without affecting the metatarsic region; Group B, formed by 16 patients (22.9%), trophic injuries affecting the metatarsic region and Group C, formed by 22 patients (31.4%), injuries affecting the calcaneous region. Injuries in both of the groups were caused by mechanical traumatism. Duration of the injury in the inferior member varied from 7 to 48 days, resulting in a 12 days average. Analyzing pervicacity in trunk arterias and evolution of patients, it may be observed that there has been a significantly better result in those with all the pulses present (81.3% x 45.5%)(p<0,01). Studying the injury locals associated to the evaluation of the cases, we may observe that for injuries in the extreme digital, result is significantly better than in locals more nearly. When distal pulses are absent, there is no significant difference in the result of the treatment, being performed in distal injuries or in the more near ones (p>0,05)(Table IV).

scholarly journals Effects of nano mineral-supplemented diet on sow productivity

2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Hoang Nghia Son
Keyword(s):  
Birth Weight ◽  
Reproductive Performance ◽  
Metal Content ◽  
Mineral Content ◽  
Control Group ◽  
Average Weight ◽  
Group Iii ◽  
Newborn Piglets ◽  
Group I ◽  
Significant Difference

This study aimed to evaluate the effects of nano mineral-supplemented diet on sow productivity. The data were estimated by several parameters consisting of piglet live ratio at newborn stage and weaning stage, piglet weight at newborn stage and weaning stage, metal content in piglet livers. The results showed that live ratio of newborn piglets in group III was highest (93.44 ± 2.83%) comparing with other groups. However, there was no significant difference of live ratio in piglets at weaning stage between nano mineral-supplemented groups with control. The birth weight of piglets in nano mineral-supplemented groups was similar to control group. The birth weight of piglets in nano mineral-supplemented groups was ranged from 1,361.61 ± 47.37 grams (group II) to 1,410.48 ± 44.28 grams (group I). However, the average weight of weaned pigs in groups III and IV was higher than other groups (6,772.92 ± 105.47 grams and 6,818.87 ± 89.59 grams). Moreover, the amount of Fe, Cu, Zn, Mn in piglet liver from nano mineral-supplemented groups have been found to be lower than those in control group. These results revealed that the supplement of nano minerals for sows promoted the reproductive performance of sows and reduced mineral content in the liver of piglets. 

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