scholarly journals A Study to Evaluate and Compare Right and Left Condylar Discrepancy between Centric Relation and Maximum Intercuspation in Three Age Groups

2016 ◽  
Vol 5 (1) ◽  
pp. 984
Author(s):  
Chetan Hegde ◽  
Swapnil Mahade ◽  
Krishna Prasad D.
Keyword(s):  
Age Groups ◽  
Orientation Relation ◽  
Group Iii ◽  
Area Of Interest ◽  
Centric Relation ◽  
Group I ◽  
Left And Right ◽  
The Mean ◽  
Group Ii ◽  
The Right

<strong><em>Background</em>:</strong>Since discrepancy between centric relation and maximum intercuspation has been an area of interest for dental fraternity for decades, the study was conducted to expand the concepts of the same when age is taken into consideration.<p><strong>Objective:</strong> This study was conducted to assess and measure the discrepancy between centric relation (CR) and maximum intercuspation (MI) at right and left condyles in three age groups, compare the discrepancy at right and left condyles between three age groups and right and left side condyles within the same age group.</p><p><strong>Methods:</strong> Sixty healthy subjects were selected and divided into three groups of twenty subjects each. Group I: 18-25 years, Group II: 30-45 years and Group III: more than fifty years. Preliminary impressions were made. Orientation relation was transferred to a semi-adjustable arcon articulator. Subjects were guided into centric relation using Dawson's bimanual manipulation technique and centric interocclusal record was made. The mandibular cast was related to the maxillary cast using centric interocclusal record. The casts were then allowed to fall into maximum intercuspation and the distance that the condylar analogues had moved was measured using Feeler gauge.</p><p><strong><em>Results:</em></strong> The mean CR-MI discrepancy in Group I was 0.417±0.137 mm and 0.364±0.123 mm, Group II was 0.528±0.160 mm and 0.512±0.158 mm and Group III was 0.873±0.228 mm and 0.815±0.172 mm at the right and left condyles respectively.</p><p><strong><em>Conclusion:</em></strong> Within the limitations of the study it was concluded that all the sixty subjects had a CR-MI discrepancy in both left and right condyles. The variation in discrepancy between the three age groups was found to be very highly significant.</p>

Genoprotective role of vitamin E and selenium in rabbits anaesthetized with sevoflurane

2004 ◽  
Vol 23 (8) ◽  
pp. 413-419 ◽  
Author(s):  
Cetin Kaymak ◽  
Ela Kadioglu ◽  
Hulya Basar ◽  
Semra Sardas
Keyword(s):  
Dna Damage ◽  
Vitamin E ◽  
Comet Assay ◽  
Antioxidant Supplementation ◽  
Group Iii ◽  
Sevoflurane Anaesthesia ◽  
Group I ◽  
The Mean ◽  
Group Ii

In this study, genotoxic effects of repeated sevoflurane anaesthesia were investigated in rabbits with or without antioxidant supplementation. Twenty-one New Zealand male rabbits were included in the study and randomized into three groups as: placebo treated (Group I), vitamin E supplemented (Group II) and selenium supplemented (Group III). Vitamin E and selenium were given intraperitoneally for 15 days before anaesthesia treatment. Anaesthesia was administered using 3% sevoflurane in 4 L/min oxygen for a 3-hour period and continued for 3 days. Blood samples were collected before anaesthesia (Sample 1), after the first, second and third days of sevoflurane administration (Sample 2, Sample 3 and Sample 4 respectively) and the last samples were taken 5 days after the last sevoflurane administration (Sample 5). Genotoxic damage was examined using the comet assay. The degree of damage is assessed by grading the cells into three categories of no migration (NM), low migration (LM) and high migration (HM) depending on the fraction of DNA pulled out into the tail under the influence of the electric field. The number of comets in each sample was calculated (1 × number of comets in category NM + 2 × number of comets in category LM + 3 ×number of comets in category HM) and expressed as the total comet score (TCS), which summarizes the damage frequencies. In Group I, a significant increase in the mean TCSs was observed for Samples 3 and 4 as compared with Sample 1. However, there were no significant differences between Samples 1, 2 and 5. The mean TCS of Sample 4 was significantly higher than Sample 1, 2 and 3 in Group II. Group III demonstrated no significant mean TCSs for any experimental conditions. Statistical differences were also observed between the groups with significant P values. This experimental study points out the presence of DNA damage with repeated sevoflurane anaesthesia and the genoprotective role of antioxidant supplementation on DNA damage in mononuclear leukocytes of rabbits by highly sensitive comet assay.

Bone mineral density and spongiosa architecture in correlation to vertebral body insufficiency fractures

1998 ◽  
Vol 39 (5) ◽  
pp. 538-542 ◽  
Author(s):  
R. Andresen ◽  
S. Radmer ◽  
D. Banzer
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Vertebral Body ◽  
Unknown Etiology ◽  
Insufficiency Fractures ◽  
Mineral Density ◽  
Group Iii ◽  
Group I ◽  
The Mean ◽  
Group Ii

Objective: the clinical value of spinal quantitative CT (sQCT) and the structural patterns of the vertebral bone were studied Material and Methods: sQCT was performed on 246 patients with a mean age of 57 years for whom conventional lateral radiographies of the thoracic and lumbar spine were available. All patients were suffering from back pain of unknown etiology. the bone mineral density (BMD) of the midvertebral section of 3 lumbar vertebral bodies was determined by means of single-energy-(SE)-weighted QCT (85 kV). Spongiosa architecture and density profile analyses were made in the axial images. This was contrasted to BMD values ascertained in SE QCT. the mean BMD was compared to the number of fractures and the patients were divided into three groups: group I — no fracture; group II — one fracture; and group III 1 fracture Results: the mean BMD was: 134.3 (74.1–187.5) mg hydroxyapatite (HA)/ml in group I; 79.6 (58.6–114.3) mg HA/ml in group II; and 52.4 (13.1–79.1)mg HA/ml in group III. A significant deterioration in spongiosa structure was found with increasing demineralization: strongly rarefied patterns predominated in the fracture groups II and III Conclusion: sQCT provides a good risk assessment of the occurrence of vertebral body insufficiency fractures

Seasonal variations in wool growth and heat tolerance of sheep. I. Wool growth

1960 ◽  
Vol 11 (1) ◽  
pp. 75 ◽  
Author(s):  
M Wodzicka
Keyword(s):  
Body Weight ◽  
Day Treatment ◽  
The Other ◽  
Seasonal Rhythm ◽  
Group Iii ◽  
Wool Growth ◽  
Group I ◽  
The Mean ◽  
Group Ii ◽  
The Difference

The monthly wool growth of three groups of rams was studied at Beltsville, Maryland. Group I received natural daylight (at 38° 53' N.) and was shorn monthly. Group II had a 7:17 hours of daylight to hours of darkness rhythm and was shorn every 6 months, once in winter and once in summer. Group III received natural daylight and was likewise shorn every 6 months. The rams of all groups produced more wool in summer than in winter. This difference was significant (P<0.001). The mean body weight and food intake were both greater in the winter months, which indicated that the seasonal rhythm of wool growth was not a consequence of poorer feeding in winter. The rams which were shorn monthly (group I) grew considerably more wool than the other two groups, but the difference was not statistically significant. The short-day treatment of group II did not increase the annual wool production nor decrease the seasonal rhythm of wool growth. The balance of evidence from this and other experiments indicates that temperature rather than light controls the seasonal rhythm of wool growth.

scholarly journals Assessment of intraocular pressure in chinchillas of different age groups using rebound tonometry

2016 ◽  
Vol 46 (8) ◽  
pp. 1466-1471 ◽  
Author(s):  
Flor Diana Yokoay Claros Chacaltana ◽  
João Antonio Tadeu Pigatto ◽  
Ione Terezinha Denardin
Keyword(s):  
Intraocular Pressure ◽  
Age Groups ◽  
Time Of Day ◽  
Age Group ◽  
Group Iii ◽  
Rebound Tonometer ◽  
Indirect Ophthalmoscopy ◽  
Group I ◽  
Schirmer Tear Test ◽  
The Mean

ABSTRACT: The aim of this research was to measure the intraocular pressure (IOP) of normal chinchilla eyes using the rebound tonometer. A further aim was to assess whether there were differences in the values of intraocular pressure in relation to animals age, gender and time of day. Thirty-six chinchillas were divided into three groups of 12 chinchillas each, by age: Group I (2-6-month-old), Group II (20 and 34 months) and Group III (37 and 135 months). Ophthalmic examination was performed previously by Schirmer tear test, slit lamp biomicroscopy, indirect ophthalmoscopy and fluorescein test in all chinchillas. Three measurements of intraocular pressure were assessed on the same day (7, 12 and 19h). Tonometry was performed on both eyes using the rebound tonometer after calibration in "p" mode. Statistical analysis was performed with SigmaPlot for Windows. The mean IOP for groups I, II and III were 2.47±0.581mmHg, 2.47±0.581mmHg and 2.51±0.531mmHg, respectively. No significant differences were reported between age and IOP and no significant differences were reported between the time of day and IOP. The IOP in chinchillas did not differ significantly between genders or ages of the animals, and did not change with time of day.

scholarly journals Effects of Ficus syncomorus and Datura metel stem-bark extracts on the sperm characteristics of Yankasa rams

2020 ◽  
Vol 47 (2) ◽  
pp. 37-45
Author(s):  
J. O. Okpara ◽  
M. B Abudul ◽  
S. I Garba ◽  
O. V Adelowo ◽  
A. C Mbgojikwe
Keyword(s):  
Sperm Morphology ◽  
Stem Bark ◽  
Haematological Parameters ◽  
Group Iii ◽  
Datura Metel ◽  
Sperm Characteristics ◽  
Group I ◽  
Semen Volume ◽  
The Mean ◽  
Group Ii

Interest in medicinal plants for the management of myriad of conditions including reproductive disorders refractory to orthodox medicinal care is on the increase. Ficus syncomorus and Datura metel are two of such plants with folkloric evidence of aiding fertility in human. This study investigated the effect of aqueous stem-bark extracts (200 mg/kg) of F. syncomorus and D. metel respectively on the sperm characteristics of Yankasa rams. Twelve (12) matured (15 – 16 months) old rams were used in this study and randomly assigned into three (I, II, III) groups of four (4) animals each. Group I served as the control while II and III served as the treatment groups and received daily oral doses (200 mg/kg) of F. syncomorus and D. metel extracts respectively for 7 consecutive days. Semen was collected from all the groups at the end of the treatments using Electro-ejaculation method and evaluated by light microscopy. The mean semen volume (68.70+4.2 to 65.62+2.00) and percentage progressive motile cells significantly (p<0.05) reduced 7 days post treatment in group III (84.05+1.3) compared to the control (85.20+1.32) and the group II (86.56+0.40) animals. The mean sperm count, the percentage liveability and the haematological parameters and erythrocytic indices (10.81±0.24 for group 111 to 12.54±0.30 for group1) significantly (p<0.05) decreased in group III compared to the values in the control and group II rams. Abnormal sperm morphology (bent mid-piece, curved tail, headless tail, tailless head) significantly (p<0.05) increased in D. metel group (7.26+0.12) compared to F. syncomorus (5.02+0.04) and control groups (5.62+0.01) respectively. D. metel aquesous extract adversely affected sperm characteristics with significant effect on semen volume, sperm morphology and counts as well as haematological parameters. Exposure of animals to D. metel at the dose used may impair sperm fertilizing ability, thus leading to reduced ram fertility. While F. syncomorus extract appears a potential drug candidate for improving fertility.

Association of Salivary Lipids and Early Childhood Caries in an Indian Subpopulation: A Preliminary Study

2019 ◽  
Vol 43 (6) ◽  
pp. 393-397
Author(s):  
Akhilesh Sharma ◽  
Mudunuri Sindhuja ◽  
Priya Subramaniam
Keyword(s):  
Flow Rate ◽  
Early Childhood Caries ◽  
Salivary Flow ◽  
Salivary Flow Rate ◽  
Total Lipids ◽  
Group Iii ◽  
Group I ◽  
The Mean ◽  
Preliminary Study ◽  
Group Ii

Aim: This preliminary study aimed to estimate and correlate the relationship between salivary flow rate and levels of salivary triglycerides, cholesterol and total lipids in children with and without early childhood caries. Study design: Ninety children aged 3 – 6 years were divided into three groups of 30 each based on their decayed missing filled tooth (dmft) score, group I (dmft score = 0), group II (dmft score ≥4 and ≤ 9) and group III (dmft scores ≥ 10). Whole unstimulated saliva was collected in a sterile graduated cup over a period of 5 minutes and was quantitatively analyzed for levels of salivary triglycerides, cholesterol and total lipids. Data obtained was subjected to statistical analysis by one way ANOVA, Post-Hoc tukey and Pearson’s correlation test. Results: Salivary flow rate was 1.20±0.36, 1.01±0.37 and 0.86±0.31 ml/min in group I, II and III respectively. The mean levels of salivary triglycerides in group I, II and III was 3.57±0.43mg/ml, 6.11±1.70mg/ml and 6.03±1.73 mg/ml, respectively. The mean levels of salivary total lipids were higher in group II and III, ie 22.51±2.87 mg/ml and 22.68±2.54 mg/ml respectively. The mean level of salivary cholesterol was highest in group III (8.03±2.91 mg/ml). Salivary triglycerides and total lipids showed a significant positive correlation with dmft scores of children (p≤ 0.001). Salivary cholesterol also had a positive association with dental caries experience of children but was not significant. There was a negative correlation between salivary flow rate and levels of salivary triglycerides, cholesterol and total lipids. Conclusion: Children with ECC (group II and III) had lower salivary flow rate and higher levels of salivary triglycerides and total lipids compared to caries free children (group I). Levels of salivary cholesterol did not differ between caries free and children with ECC.

Atrioventricular responses of canine heart following chronic unilateral vagotomy

1987 ◽  
Vol 253 (2) ◽  
pp. H394-H401 ◽  
Author(s):  
D. V. Priola ◽  
C. Anagnostelis ◽  
C. Sanchez-Wilson ◽  
T. M. Blomquist
Keyword(s):  
Frequency Response ◽  
Control Mechanisms ◽  
Canine Heart ◽  
Response Curves ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
The Right ◽  
Inotropic Responses ◽  
Intrinsic Cardiac Nerves

The intrinsic cardiac nerves (ICN) have been shown to develop supersensitivity to nicotine (NIC) following complete extrinsic cardiac denervation. The present experiments were performed to delineate the pattern of ICN distribution in the heart by examining the pattern of NIC supersensitivity after unilateral vagotomy (VGX). Thirty-eight dogs were placed on cardiopulmonary bypass and inotropy evaluated by means of isovolumic pressures from fluid-filled balloons placed in the atria and ventricles. The animals were divided into three groups: group I, sham-operated controls; group II, animals studied 1–2 wk after VGX; and group III, animals studied 8–12 wk after VGX. Chronotropic and inotropic responses were evaluated in terms of NIC and acetylcholine (ACh) dose-response curves as well as frequency-response curves to stimulation of the intact vagus nerve (0.5–30 Hz). No change in NIC sensitivity was observed in group II, and vagal frequency-response curves were identical to group I. In group III dogs, both the right atrium and right ventricle showed significant increases in NIC sensitivity after left vagotomy. All group III animals showed right-shifted frequency-response curves. We conclude that nicotinic supersensitivity of the ICN and inotropic unresponsiveness to vagal stimulation occur but are slow in developing (70–130 days); and preganglionic sprouting does not appear to play a functional role in the adjustment of cardiac control mechanisms to unilateral vagotomy.

The Role of sFas in the Immune Escape Mechanism and Progression of Cancer Larynx

2009 ◽  
Vol 2 ◽  
pp. CMENT.S2565
Author(s):  
Amr A El Badry ◽  
Ismail Elmofty ◽  
Amira Helmy
Keyword(s):  
Serum Level ◽  
Buffy Coat ◽  
Control Group ◽  
Group Iii ◽  
Soluble Fas ◽  
Group I ◽  
Significant Difference ◽  
Cancer Larynx ◽  
The Mean ◽  
Group Ii

This work assess serum levels of soluble Fas form (sFas) in patients with different stages of laryngeal squamous cell carcinoma(LSCC) to investigate its prognostic significance. We correlate its levels with the morphological changes of peripheral blood cells via buffy coat examinatin. The study population included 70 patients clinically diagnosed and pathohistologically confirmed LSCC in addition to 20 healthy controls. According to TNM classification 33(47.1%) patients were in stage I (group I) and 24(34.3%) in stage II (group II), 13(18.5%) in stage III (group III). The results revealed that the mean serum level of sFas (pg/ml) in the control group was 51.2, in group I was 66.33, in group II was 81.33 and in group III was 112.45. Statistical analysis of the mean of sFas by ELISA test in the patients' groups in comparison to the control revealed a significant increase of both group II and III in comparison to the control group (P < 0.01) but there was no significant difference (P > 0.05) between group I in comparison to either the control or group II. There was a significant difference (P < 0.05) between group I in comparison to group III. LM examination revealed massive extent of the apoptotic cells in group III when compared to both group I and group II. EM examination of the buffy coat revealed apoptotic changes, mainly in the peripheral blood mononuclear cells (PBMNCs), represented by surface membrane ruffles and blebs with clumped nuclear chromatin and vacuolated cytoplasm. In conclusion, this study may help us to better understand one of the escape mechanisms in cancer larynx. This mechanism is represented by the significant increase in both the serum level of sFas and the morphological apoptotic changes that detected in PBMNCs. Soluble Fas may contribute to the progression of laryngeal cancer. It can be used as an attractive target for anticancer therapy and may be considered as a marker of disease progression and poor prognosis in laryngeal cancer.

RESULTS OF MONITORING OF REPEATED DISABILITY DUE TO THYROID CANCER IN THE ADULT POPULATION IN MOSCOW

2020 ◽  
Vol 3 ◽  
pp. 38-46
Author(s):  
G.E. Pogosyan ◽  
Keyword(s):  
Thyroid Cancer ◽  
Adult Population ◽  
Age Groups ◽  
Malignant Neoplasm ◽  
Endocrine System ◽  
Malignant Neoplasms ◽  
Group Iii ◽  
Group I ◽  
Disability Group ◽  
Group Ii

Among socially significant diseases that are characterized by high prevalence rates, malignant neoplasms occupy the leading positions. Thyroid cancer is the most common malignant neoplasm of the endocrine system. Purpose of the study. Analysis of recurrent disability due to thyroid cancer in the adult population in Moscow (2015–2019). Materials and research methods. The structure of repeated disability due to thyroid cancer by sex, age and disability group was studied. The dynamics of the number of the PPI contingent was traced and the level of repeated disability due to this pathology was determined. The number of observations was 4660 PPI. Research results. It was found that in the structure of repeated disability due to thyroid cancer, women predominated by gender. The trend towards an increase in the number of PPI took place in all major age groups of the adult population. The prevalence of PPI with group III disability, the proportion of which was 66.0% (PPI with group II – 32.5%, PPI with group I – 1.5%). The visibility indicator in 2019 in relation to 2015 (taken as 100%) was equal in the general contingent of PPI among disabled people of group I – 142.9%, group II – 374.1%, group III – 249.3% ...

scholarly journals Determination of Maxillary Incisal Edge Position using Canine Visibility as a Guide – An In vivo Study

2021 ◽  
pp. 165-171
Author(s):  
Ankita Piplani ◽  
G. Ganadhipathi ◽  
M. C. Suresh Sajjan
Keyword(s):  
Age Groups ◽  
Adhesive Tape ◽  
Central Incisor ◽  
Upper Lip ◽  
Maxillary Central Incisor ◽  
Group Iii ◽  
Incisal Edge ◽  
Group I ◽  
Group Ii

Purpose:  To evaluate the reliability of the visibility of the central incisor & the canine for the cervico incisal positioning of anterior maxillary teeth related to age & sex while the upper lip was in repose in dentate patients & the development of rehabilitation recommendations for edentulous individuals with regard to the location of the maxillary incisal edge Methodology: 308 subjects [152 Males & 156 Females] belonging to the age of 30 to 59 years were selected using a simple stratified random technique. There were three age and sex groups: Group I was 30 to 39 years old, Group II was 40 to 49 years old, and Group III was 50 to 59 years old. The vertical distances (in mm) between the lower border of the upper lip and the right maxillary central incisal edge and canine tip were measured and recorded using adhesive tape marked with millimetres. A single examiner recorded all the measurements and the values were tabulated and subjected to statistical analysis. Results: Men in Groups I and II had maxillary central incisor exposure ranging from +6 to -1mm, whereas males in Group III had exposure ranging from +5 to -2mm. There was an exposure range of +6 to -2 mm in females in Group I, +7 to -2 mm in Group II, and +5 to -2 mm in Group III for the central incisors. While the canine exposure in Group I and II and Group III ranged from +2 to -4mm in females, the exposure ranged from +3 to -3mm in men of all ages. In all groups, females had statistically significant (P0.05) more central incisor and canine exposure than men. Conclusions: The canine visibility was less variable in all the age groups and in both males and females in comparison to the central incisor. When restoring edentulous individuals, the average canine exposure dimension can be employed for cervico-incisal location of the anterior maxillary teeth.

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