26 SPERM MOTILITY DECREASING AND SEMEN FERTILITY IN THE BULL EVALUATED BY BIOSPECKLE

2010 ◽  
Vol 22 (1) ◽  
pp. 170 ◽  
Author(s):  
R. S. Macedo ◽  
J. B. Barreto Filho ◽  
R. A. Braga Jr ◽  
G. F. Rabelo
Keyword(s):  
Sperm Motility ◽  
Laser Light ◽  
Bos Taurus ◽  
Test Group ◽  
Mean Value ◽  
Ultrasound Images ◽  
Group I ◽  
Conception Rates ◽  
Inertial Moment ◽  
Group Ii

Sperm motility decreasing in a semen sample over time is an indirect approach to assess spermatozoa viability and should be related to the ejaculate fertility. The biospeckle (BSL) is an interacting phenomenon between laser light and biological specimens that allows measurement of sperm kinetic activity by means of an index called the inertial moment (IM). The aim of this work was to evaluate sperm motility diminishing in frozen bovine semen with BSL and analyze semen fertility in relation to the motility decreasing behavior patterns showed by different semen samples. Fertility was assessed by beef heifer conception rates after AI. Semen of 6 mature IA donor bulls (Bos taurus indicus) was previously divided in 2 groups (group I: motility ≥50%; group II: motility <50%), each group comprised 3 animals. Semen was thawed at 37°C for 30 sin a water bath. One aliquot of 10 μL was placed in a warmed slide, covered with a slip, and evaluated by light microscopy and BSL just after thawing. Then, samples were kept at room temperature to induce a decrease in sperm motility. Each sample was illuminated 6 times by laser light at intervals of 2 min (n = 36) and IM values were obtained. The semen samples were used in an AI program of beef heifers (n = 166) under the same nutrition and management conditions. All inseminations were done by the same technician, and donor bulls were used consecutively throughout the breeding season. Pregnancy diagnosis was done by ultrasound images (Falco 100, 6 MHz, Pie Medical, Crawley, UK) 28 days after insemination. The SISVAR software was used in variance analysis and comparison of means by the Tukey test. Group I showed greater (P < 0.05) IM mean value (153.5 ± 27.48) compared with group II (107.94 ± 30.61), which means that this group had higher sperm motility during the time of evaluation. In addition, conception rates (0.63 ± 0.49) for group I were also higher (P < 0.05) compared with group II. Apparently semen fertility is related to the sperm kinetics measured by the IM. Mean IM values (134.0 ± 22.65 and 96 ± 22.34, groups I and II, respectively) obtained in the last illumination for each group did not differ (P > 0.05), but a tendency to differ was observed when a greater number of illuminations was done. Our data suggest that the BSL was capable of identifying spermatozoa surviving between high and low motility groups, and the sperm motility decreasing measured by the IM might be an objective approach to evaluate semen fertilization potential. Financial support: FAPEMIG, grant EDT 94/07, CNPq.

22 IN VITRO FERTILITY ESTIMATES USING SPERM KINETICS VARIABLES AND CONCEPTION RATES IN BEEF HEIFERS

2010 ◽  
Vol 22 (1) ◽  
pp. 169
Author(s):  
M. V. C. Ferraz Jr ◽  
R. S. Macedo ◽  
J. B. Barreto Filho ◽  
T. F. Silva ◽  
R. A. Braga Jr ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Ultrasound Images ◽  
Beef Heifers ◽  
Fast Evaluation ◽  
Spermatozoa Motility ◽  
Frozen Semen ◽  
Conception Rates ◽  
Inertial Moment

Sperm motility is a physical parameter evaluated in semen samples of the bull and is thought to be related to the fertility in the male. Despite being a characteristic of simple and fast evaluation, motility estimates involve subjective components when analyzed by light microscopy (LM) that might restrain their evaluation in some conditions. Moreover, in some species, poor correlations were observed between spermatozoa motility and semen fertility. The incidence of coherent light in a semen sample generates a phenomenon called biospeckle (BSL) that is capable of measuring the kinetics activity of the spermatozoa. In this work the relationship among sperm kinetics variables evaluated by LM and BSL and conception rates in beef heifers was investigated, with the purpose to predict frozen semen fertility when laser light is used. Sixty semen samples of 6 mature AI donor bulls (Bos taurus indicus) herein named A, B, C, D, E, and F were thawed at 37°C for 30 s in a water bath and evaluated by LM and BSL. In LM evaluation, an index (IND) was proposed to group together, in a single mean estimate, the spermatozoa motility (M: % scale) and velocity (V: 1 to 5 scale) according to the equation IND = [V × 20 + M]/2. In the BSL evaluation, each sample was illuminated (n = 10 per bull) by a laser beam (He-Ne, 632 nm and 10 MW) for 40 s and a mean inertial moment (IM) was obtained for each donor bull. These semen samples were used in an AI program of beef heifers (n = 166) clinically examined for reproductive health, body condition, and weight. Pregnancy diagnosis was done by ultrasound images (Falco 100, 6 MHz, Pie Medical, Crawley, UK) 28 days after insemination. Fertility estimates were done by the generalized linear model using logistic regression (stepwise methodology), generating an equation to predict the conception rate of the semen, the variables of which were IM and IND. Results of the predicted conception rates (pCR) using IM and IND and the observed conception rates (oCR) were A (0.5490; 0.57), B (0.6483; 0.68), C (0.7108; 0.71), D (0.4552; 0.28), E (0.4797; 0.54), F (0.3825; 0.47), respectively. Positive correlations (P < 0.05) were observed between pCR and oCR (r = 0.79) showing a similar behavior between in vitro and in vivo estimates. Results of this work showed that there is a high correlation between spermatozoa kinetics and semen fertility in the bull and that BSL motility analysis could be used as an approach to evaluate the fertility of semen samples. Financial support: FAPEMIG grant EDT 94/07, CNPq.

Stimulus Vividness and Anxiety Level in Intentional—Incidental Learning

1964 ◽  
Vol 14 (3) ◽  
pp. 819-825 ◽  
Author(s):  
Marilyn E. Miller ◽  
Joyce A. Dost
Keyword(s):  
Recognition Test ◽  
Incidental Learning ◽  
Test Group ◽  
Anxiety Level ◽  
Sorting Task ◽  
Group I ◽  
Group Ii

High (Ha) and low (La) scorers on the MAS were instructed to alphabetize a deck of 30 words, 10 each of which were high, medium, or low vivid. Group I had 3 trials with incidental instructions (told only to sort), a recognition test of the words, three more trials with instructions to learn the words, and a second recognition test. Group II had 6 incidental sorting trials followed by a recognition test. It was hypothesized that Ha Ss would sort more efficiently and recognize fewer words because of a greater tendency to focus on fewer available cues. Findings in support of the hypothesis were that Ha Ss sorted more rapidly and more accurately, recognized fewer words, and showed greater disruption in the sorting task when instructed to learn the words. In addition, Ha Ss evidenced a “sensitized” reaction to medium vivid words.

42 SEMEN FERTILITY OF THE BULL EVALUATED BY SECOND-ORDER STATISTICS

2010 ◽  
Vol 22 (1) ◽  
pp. 178
Author(s):  
T. F. Silva ◽  
J. B. Barreto Filho ◽  
R. S. Macedo ◽  
M. V. C. Ferraz Jr ◽  
R. A. Braga Jr ◽  
...  
Keyword(s):  
Order Statistics ◽  
Pearson Correlation ◽  
Sperm Concentration ◽  
Second Order ◽  
Semen Parameters ◽  
Ultrasound Images ◽  
Second Order Statistics ◽  
Group I ◽  
Frozen Semen ◽  
Group Ii

The biospeckle (BSL) is based on the incidence of laser light upon active biological materials, followed by analysis and manipulation of secondary images, and then, application to those images of a second-order statistics technique called the inertial moment (IM) that results in information about the activity of the specimen. This technique was previously used to analyze sperm motility. A bull’s fertility could be evaluated by several semen parameters in vitro and more precisely by conception rates of AI heifers. The objective of this work was to evaluate the fertility of bull’s frozen semen showing different levels of activity in an AI program. Semen of 6 mature IA donor bulls (Bos taurus indicus) was previously divided in 2 groups (group I: motility ≥50%; group II: motility <50%), each group comprising 3 animals. Sperm concentration was 30 to 35 × 106 cells per straw. Semen was thawed at 37°C for 30 s in a water bath. Samples were illuminated by nonpolarized He-Ne laser (632 nm, 10 mW) for 40 s, the time needed to take 512 images under a time rate of 0.08 s. Images were acquired by a CCD camera and analyses were conducted by building space-time speckle matrices from center columns of 512 images of the dynamic speckle and then the IM was calculated. Beef heifers (n = 109) under the same nutrition and management conditions underwent AI with the semen samples. All inseminations were done by the same technician and donor bulls were used consecutively throughout the breeding season. Pregnancy diagnosis was done by ultrasound images (Falco 100, 6 MHz, Pie Medical, Crawley, UK) 28 days after insemination. The SISVAR software was used for variance analysis and comparison of means by Tukey test at a nominal level of 5%. The IM (194.13 ± 31.99) obtained from 10 illuminations per sample of each bull and the conception rate (CR) of group I (CR = 0.63 ± 0.49) differed (P < 0.05) compared with group II (IM = 142.03 ± 30.62; CR = 0.43 ± 0.50). Pearson correlation coefficient (P < 0.05) between IM and CR was r = 0.21, showing coherence with IM and CR, despite its low value. These data showed that second-order statistics are correlated to semen fertility and could be used to evaluate ejaculates of the bull. Financial support: FAPEMIG grant EDT 94/07 and CNPq.

scholarly journals THE COMPARISON OF DEEP NECK FLEXOR STRENGTHENING EXERICISE WITH MCKENZIE NECK EXERCISE FOR NECK POSTURE CORRECTION ON STUDENTS WITH FORWARD HEAD POSTURE AT SMA N 1 SEMARAPURA

2018 ◽  
Vol 6 (1) ◽  
pp. 23
Author(s):  
Gede Eka Juli Prasana ◽  
I Nyoman Adiputra ◽  
I Made Krisna Dinata
Keyword(s):  
Exercise Intervention ◽  
Hypothesis Test ◽  
Test Group ◽  
Forward Head Posture ◽  
Head Posture ◽  
Group I ◽  
Strengthening Exercise ◽  
Significant Difference ◽  
Before And After ◽  
Group Ii

This study aims to compare deep neck flexor strengthening exercise intervention with mckenzie neck exercise to correct the neck posture of student with forward head posture. Using experimental design with Pre-Test and Post-Test Group Design involves a sample of 24 people divided into 2 groups. Group I was given deep neck flexor strengthening exercise intervention and Group II was given mckenzie neck exercise intervention. Hypothesis Test using paired sample t-test obtained result p = 0.592 with average difference in Group I 7.58 ± 4.39 whereas Group II got difference mean 8.5 ± 3.84. These results showed no significant difference in craniovertebral angle elevation before and after intervention in both groups. Keywords : forward head posture, craniovertebrae angle, deep neck flexor strengthening exercise, mckenzie neckexercise,

Forearm muscle insulin resistance during hypoglycemia: role of adrenergic mechanisms and hypoglycemia per se

1995 ◽  
Vol 268 (2) ◽  
pp. E248-E254 ◽  
Author(s):  
B. Capaldo ◽  
R. Napoli ◽  
R. Guida ◽  
P. Di Bonito ◽  
S. Antoniello ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Muscle Metabolism ◽  
Mass Effect ◽  
Mean Value ◽  
Adrenergic Stimulation ◽  
Group Iii ◽  
Group I ◽  
Extreme Insulin Resistance ◽  
Group Ii

The forearm perfusion technique was used 1) to quantify the muscle metabolism of glucose and gluconeogenic precursors in response to insulin-induced hypoglycemia and 2) to assess the role of catecholamines and glucose concentration, pe se. Insulin (0.5 mU.kg-1.min-1) was infused for 4 h in three groups of healthy volunteers. In group I (n = 6), blood glucose (BG) was maintained at its basal level (4.5 +/- 0.1 mmol/l). In group II (n = 7), BG was allowed to fall to approximately 3 mmol/l. Group III (n = 6) was similar to group II except that propranolol was infused also. In addition, at 240 min, hypoglycemia was locally corrected by intrabrachial glucose infusion while maintaining the systemic milieu unperturbed. In group I, forearm glucose uptake (FGU) increased from 4.7 +/- 1.3 to a mean value of 37.8 +/- 5.0 mumol.l-1.min-1, whereas in group II it remained unchanged (8.3 +/- 2.0 mumol.l-1.min-1). In group III, propranolol partially prevented the suppression of FGU that increased to 21.6 +/- 5.2 mumol.l-1.min-1 (P < 0.05 vs. group II). Local correction of hypoglycemia normalized the FGU response (36.5 +/- 8.0 mumol.l-1.min-1). Muscle release of lactate, but not of alanine, was slightly higher during hypoglycemia (P = not significant). Forearm blood flow remained unchanged in groups I and III, whereas it increased by approximately 40% in group II (P < 0.05). It is concluded that, during mild hypoglycemia 1) extreme insulin resistance develops in the skeletal muscle, mediated by beta-adrenergic stimulation and reduced glucose mass effect and 2) mobilization of gluconeogenic precursors is only weakly activated.

Physical Activity Effects in Elderly Female: Evaluation through Six-minute Walking Test

2011 ◽  
Vol 20 (5-6) ◽  
pp. 95-104 ◽  
Author(s):  
Matteo Merati ◽  
Alice Beretta ◽  
Luca Eid ◽  
Francesco Casolo ◽  
Nicola Lovecchio
Keyword(s):  
Physical Activity ◽  
Daily Living ◽  
Elderly Women ◽  
Training Session ◽  
Test Group ◽  
Walking Test ◽  
Elderly Female ◽  
Group I ◽  
Group Ii ◽  
Experimental Group

Physical Activity Effects in Elderly Female: Evaluation through Six-minute Walking Test Study aim. Aerobic capacity is very important for elderly. Daily living activities, such as walking, doing housework and shopping, require a good strength, but also a good aerobic endurance. The aim of this study was to verify the effects of regular training activity on a typical daily action, such as deambulation. Material and methods. Twenty-six volunteer elderly women randomly divided into two groups, group II (age = 64,5 ± 3,58 years, weight = 61,67 ± 4,25 kg, height = 1,62 ± 0,04 m; BMI = 23,67 ± 1,79 kg m-2), group I (age = 65,21 ± 4,59 years, weight = 63,36 ± 7,59 kg, height = 1,62 ± 0,06 m; BMI = 24,1 ± 1,98 kg m-2) participated in this study. Groups performed endurance training for eight weeks (2 days per week, 1 hour each, for experimental group II; 1 day per week, 1 hour each, for experimental group I). Exercises involved in many possibilities of physical expression to keeping all body in motion for at least 30 min. During the second 30 min exercises for abdominal and lower limb muscles were proposed. The physical efficacy was tested through 6 min walking test. Results. After the training all people increased the distance in the test. Group II participants significantly improved their distance (pre-training = 636.25 m, post-training = 673.75 m). Group I reported also improvements (pre = 568.21 m; post = 600 m), but with a minor level of significance. Conclusions. Specific regular physical activity provides significant benefits adopting two sessions per week but it is also important do not underestimate the possibility, where people can not, of a one training session per week. Regular and adequate levels of physical activity allow improving daily living activity helping the elderly to keep their autonomy as long as possible.

scholarly journals Evaluation of Impact of Tall Like Receptor 4 and Liposaccharide in Pathogenesis of Hepatic Cancer

2021 ◽  
Vol 4 (3) ◽  
pp. 01-08
Author(s):  
Emadeldin R. Matar ◽  
Mohammed H. Goda ◽  
Tamer M. Abuama
Keyword(s):  
Serum Level ◽  
Mean Value ◽  
Alpha Fetoprotein ◽  
Tlr4 Expression ◽  
Group I ◽  
Significant Difference ◽  
The Mean ◽  
Group Ii ◽  
Chronic Hcv ◽  
Stage Stage

Functional TLR4 expression has been linked to HCC development. TLR4 may serve an important role in HCC development by promoting the malignant transformation of epithelial cells and tumor growth. The consequences might be dependent on the complex signaling networks triggered by TLR4 activation and the tumor microenvironment. The study included 90 consecutive subjects classified into 3 group their age from 40 to 70 years old. Group (I): HCC patients on top of chronic HCV infection. they were 45 patients 30 male and 15 females, their age ranged from 45 to 55 who were subdivided into 3 subgroups according to Barcelona clinic liver cancer (BCLC): Group (Ia): included 8 HCC patients in early stage. (stage A). Group (Ib): included 12 HCC patients in intermediate stage (stage B). Group (Ic): included 25 HCC patients in advanced stage. (stage C). Group (II): 30 Cirrhotic patients with chronic HCV, 21 male and 9 females, their age ranged from 50 to 60. This group was subdivided into 2 subgroups according to Child–Pugh score Group (IIa): included 8 Child–Pugh A. Group (IIb): included 22 Child–Pugh B and C. Group (III): controlled group included 15 normal subjects. 10 male and 5 females, their age ranged from 45 to 60. They were selected to match patients’ groups in demographic and socioeconomic standards. In our study where 15 persons are control showed lower level in TLR4 with mean 1.0±0.2, however 30 patients with HCV and other 45 patients with HCC showed higher level in TLR with mean 2.27±0.6 and 4.2±1.06 respectively. In our study there is statistically significant difference in serum TLR4 level between group (Ia) (2.25±0.5) and other subgroups which shows more increase in serum level of TLR4 in Group IB (3.2-1.06) than Group IA. Also shows more increase in serum level of TLR4 in Group IC (4.0±2.0) than Group IA and IB In our study HCC group showed higher level of LPS with mean 4.5±1.26 however lower in HCV group with mean 2.9-1.0 and least in control group with mean 1.1±0.4 In our study there is statistically significant difference in serum LPS level between group (IA) with mean 3.0±0.5 and other subgroups which shows more increase in serum level of LPS in Group IB with mean 4.4-1.0 than Group IA. Also shows more increase in serum level of LPS in Group IC with mean 4.0±1.76 than Group IA and IB In our study there is statistically significant difference in serum LPS level between group (IIB) and group (IIA) which shows more increase in serum level of TLR4 in Group IIB with mean 2.7±1.1 than Group IIA with mean 2.20±0.2 In our study there is statistically insignificant difference of the mean value ± SD of sex as regard to LPS and TLR expression (t = 1.2, p = 0.22). (t = 0.16, p = 0.87) respectively.In our study there is statistically significant positive correlation between ALT, AST, Platelets, alpha fetoprotein and LPS as regard to TLR4 expression in group II more in IIB,C than IA . but insignificant of the mean value ± SD of other parameters. In our study there is statistically significant difference of the mean value ± SD of ALT, AST, Platelets, alpha fetoprotein and TLR4 as regard to LPS expression in group I more in IB, C than IA. but insignificant of the mean value ± SD of other parameters.In our study there is statistically significant difference of the mean value ± SD of ALT, AST, Platelets and TLR4 as regard to LPS expression in group II more in IIB than IIA. but insignificant of the mean value ± SD of other parameters. Conclusion: TLR4 and LPS measurement should be carried for all patient with HCV Who are at risk for HCC with close monitoring. Conduct a study on a Gut microbiota as therapeutic targets for HCC.

scholarly journals Determination of the optimal concentration of Minitube Equex paste for boar semen cryopreservation based on sperm motility characteristics

2020 ◽  
Vol 52 (3) ◽  
Author(s):  
Junpen Suwimonteerabutr ◽  
Morakot Nuntapaitoon ◽  
Padet Tummaruk
Keyword(s):  
Sperm Motility ◽  
Egg Yolk ◽  
Group Iv ◽  
Optimal Concentration ◽  
Freezing And Thawing ◽  
Semen Cryopreservation ◽  
Group Iii ◽  
Group I ◽  
Boar Semen ◽  
Group Ii

Equex paste is a non-permeating cryoprotective agent (CPA) that improved post-thaw survival of spermatozoa during boar semen cryopreservation. However, Equex paste produced by Nova Chemical Sales Inc. (MA, USA) is not currently available. The aim of the present study was to determine the optimal concentration of Minitube Equex paste (Minitube, Tiefenbach, Germany) for boar semen cryopreservation in comparison with Nova Equex STM paste (control). Fifteen ejaculates from 12 mature boars were collected by the glove-hand method. Each ejaculate was aliquoted and cryopreserved in base freezing extender III as Tris-citrate egg yolk (TEY) extender plus 9.0% glycerol classified into four groups. Group I was the control and included only 1.5% Nova Equex STM paste. Groups II, III and IV were the experiment groups, and contained different concentrations of Minitube Equex paste (Group II: 1.5%; Group III: 1.7%; and Group IV: 1.9%) added to the freezing extender III. After freezing and thawing, sperm motility characteristics were evaluated by Sperm Class Analyzer® incubated at 37 °C for 0 (10 min), 1 and 2 h post-thawing. In Group IV after thawing at 0 h, rapid velocity and the velocity curved line were significantly higher than in Groups II and III (P &lt; 0.05) but did not differ from Group I. Moreover, after thawing at 1 h, LIN (linearity) in Group IV was higher than in Group II (P &lt; 0.05), but did not differ from the other groups. In conclusion, the most suitable concentration of Minitube Equex paste in the current protocol was 1.9% supplemented with 9.0% glycerol in TEY-based freezing extender III, based on the conformity between data from manual guides and the observed sperm motility characteristics results.

scholarly journals Analysis of Bull Sperm DNA Abnormalities Due to Cadmium Accumulation

2017 ◽  
Vol 6 (1) ◽  
pp. 5
Author(s):  
Fuad Fitriawan
Keyword(s):  
Sperm Motility ◽  
Dna Analysis ◽  
Cadmium Accumulation ◽  
Abnormal Sperm ◽  
Group I ◽  
Sperm Dna ◽  
Percentage Similarity ◽  
Bull Sperm ◽  
Group Ii ◽  
Percent Similarity

Sperm abnormalities can occur by various causes. Abnormality of sperm is usually characterized by abnormal sperm motility and viability. This was caused by the inability of mitochondria on ATP-ase in producing ATP and ecto-enzyme Cik role in keeping the movement so that movement of sperm motility declines. Research that leads to total abnormal sperm DNA analysis is still rare. The purpose of this research was to get the results of the molecular characteristic picture of the overall characteristics of DNA loci that have abnormalities in bull sperm and get a picture of differences in overall DNA loci of abnormal and normal sperm. This research was conducted in October-December 2016. With the results of Group I consists of D, E with a percent similarity of 92.308%, group II consists of C and Group I with a percentage similarity of 50.125%, group II consists of A and B with a percent similarity of 100%, group II and group III with a percentage similarity of 0%. Based on the above data it can be concluded that the treatment A and B is not suspected to cause DNA damage compared to treatment C, D and E.

scholarly journals Synergistic Effects of Growth Factor, Bone Graft, and Resorbable Barrier Membrane in Management of Dehiscence and Fenestration of Dental Implants

2017 ◽  
Vol 8 (3) ◽  
pp. 177-182
Author(s):  
Umesh P Verma
Keyword(s):  
Growth Factor ◽  
Bone Graft ◽  
Dental Implants ◽  
Synergistic Effects ◽  
Test Group ◽  
Control Group ◽  
Barrier Membrane ◽  
Group I ◽  
Significant Difference ◽  
Group Ii

ABSTRACT Aim The present study was primarily designed to evaluate the outcome of guided bone graft regeneration in peri-implant defects by combining recombinant human platelet-derived growth factor-BB (rhPDGF-BB) and granules of beta-tricalcium phosphate (B-TCP) mounted by resorbable biomesh membrane. Secondary objective was to determine the value of resorbable barrier membrane to improve the efficacy of the growth factormediated regeneration. Materials and methods A randomized controlled study comprised 14 participants (8 males and 6 females, mean age 37 years, range 19—55 years), in which a total of 15 implants (10 in maxilla and 5 in the mandible) were placed. Fifteen implant sites were randomly divided by picking a code into three groups: Test group I (n = 5) ß-TCP + rhPDGF (0.3 mg/mL) + biomesh, test group II (n = 5) ß-TCP + rhPDGF, and control (n = 5) ß-TCP + biomesh. The experimental site was examined clinically for the gingival status and radiographically for the bone status. Results Statistically significant difference in preoperative and postoperative measurements was observed for test groups I and II in all the parameters except width; in contrast, there was no significant difference observed for the control group from baseline to 5 months postoperatively. On intergroup comparison, statistically significant difference was observed between test group I vs control group and test group II vs control group, but it was not significant between test groups I and II, which was further confirmed using global performance scale score. Conclusion It concluded that rhPDGF-BB and ß-TCP mounted by resorbable biomesh membrane played a synergistic role in the management of peri-implant defects. Clinical significance Bone regenerated using ß-TCP with rhPDGF-BB in the reversal of peri-implant defects. How to cite this article Arora R, Verma UP, Dixit J, Lal N. Synergistic Effects of Growth Factor, Bone Graft, and Resorbable Barrier Membrane in Management of Dehiscence and Fenestration of Dental Implants. World J Dent 2017;8(3):177-182.

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