scholarly journals Abuse of Alabukun consumption: A biochemical and histomorphological study in Rattus norvegicus rats

2021 ◽  
Vol 8 (1) ◽  
pp. 037-042
Author(s):  
Emmanuel TonbraEgoro ◽  
Ikhide Godwin Ilegbedion ◽  
Prudence NkemdinimOkara
Keyword(s):  
Rattus Norvegicus ◽  
Daily Basis ◽  
Control Group ◽  
C Reactive Protein ◽  
Biochemical Finding ◽  
Mean Values ◽  
Reactive Protein ◽  
The Mean ◽  
Kidney Liver ◽  
Experimental Group

This study was aimed on the biochemical and histomorphological study of abuse in the consumption of alabukun powder in Rattus norvegicus rats. Five milliliter of blood specimen was collected into lithium heparin bottles from seven rats weighing 240±2g respectively with each of them administered with 0.2mg/kg alabukun powder daily for a period of two weeks (experimental group) while another seven rats weighing 240±2g each were not administered with alabukun powder (control group). Thereafter alanine aminotransferase, aspartate aminotransferase, urea, creatinine and C-reactive protein were measured quantitatively in both groups of rats. The mean values of all the measured biochemical parameters in Rattus norvegicus rats in the experimental group were statistically significant (p<0.05) as compared to that in the control group. This established biochemical finding was in conformity with the histomorphological examination of the kidney and liver organs. In conclusion, this study has established that administration of 0.2mg/kg of alabukun powder on daily basis for a period of two weeks on Rattus norvegicus rats may induce hepato-renal and inflammatory disorders. It is thus recommended that consumption of alabukun powder by humans should strictly be in compliance with its prescription. However, kidney, liver and inflammatory biomarkers should be quantitatively measured in humans that have abused its consumption with a view to ascertain their health status and prevent any deleterious risks.

scholarly journals Assessment of selected biochemical parameters among food hawkers along the streets of Yenagoa Bayelsa State, Nigeria

2021 ◽  
Vol 16 (3) ◽  
pp. 103-108
Author(s):  
Emmanuel Tonbra Egoro ◽  
Emmanuel Sunday Oni ◽  
Otaraku Jonathan Oye ◽  
Annabel Awele Idama
Keyword(s):  
Aspartate Aminotransferase ◽  
Alanine Aminotransferase ◽  
Biochemical Parameters ◽  
Control Group ◽  
C Reactive Protein ◽  
Mean Values ◽  
Reactive Protein ◽  
Significant Difference ◽  
The Mean ◽  
Experimental Group

This study was aimed on assessment of selected biochemical parameters among food hawkers along the streets of Yenagoa, Bayelsa State, Nigeria. Five milliliter of blood specimen was collected from fifteen food hawkers with ≤ 5 years working experience (experimental group one), ≥ 5 years working experience (experimental group two) and nonfood hawkers (control group) respectively into lithium heparin anti-coagulated bottles. Thereafter alanine aminotransferase, aspartate aminotransferase, urea, creatinine and C-reactive protein were measured quantitatively. The mean values of volunteers in experimental group one showed no statistically significant difference (p>0.05) in alanine aminotransferase (7.46 ± 1.02), aspartate aminotransferase (7.02 ± 0.86), urea (7.70 ± 1.29) and creatinine (70.44 ± 3.54) as compared with the control group (7.42 ± 0.98), (6.98 ± 0.82), (7.65 ± 1.28) and (70.40 ± 3.52) respectively, but there was a statistically significant difference (p<0.05) in C-reactive protein (17.40 ± 1.98) when compared with the control group (2.70 ± 0.70). However, the mean values of food hawkers in experimental group two showed statistically significant difference (p< 0.05) in all the measured biochemical parameters 27.70±2.98, 21.40±2.06, 15.50±2.02, 110.70±3.74, 29.42±3.20 as compared with that of the control group 7.42±0.98, 6.98±0.82, 7.65±1.28, 70.40±3.52, 2.74±0.70. The volunteers in experimental groups one and two showed 13% -27% and 53% -80% abnormal values of the measured biochemical parameters respectively as compared with that of the control group. In conclusion, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and C-reactive protein may be altered in food hawkers with ≥ 5 years working experience. It is therefore recommended that food hawkers in this category should go for hepato-renal and inflammatory biochemical parameters checkup occasionally in any registered and licensed Medical Laboratory Facility.

scholarly journals Effects of indiscriminate consumption of paracetamol (acetaminophen) on selected biochemical parameters in Rattus norvegicus rats

2020 ◽  
Vol 13 (3) ◽  
pp. 054-063
Author(s):  
Emmanuel Tonbra Egoro
Keyword(s):  
Rattus Norvegicus ◽  
Therapeutic Dose ◽  
Biochemical Parameters ◽  
Daily Basis ◽  
Toxicity Study ◽  
Control Group ◽  
Mean Values ◽  
Reactive Protein ◽  
Blood Specimens ◽  
Experimental Group

Paracetamol (acetaminophen) is a well-known medication for the treatment of pain and fever. The aim of this study was to assess the effects of its indiscriminate consumption on selected biochemical parameters in Rattus norvegicus rats with a view to relate the findings to humans. The data obtained from the human volunteers within the age range of 20-67years revealed that paracetamol (acetaminophen) is indiscriminately consumed mainly by traders as compared with other painkillers in the study communities. Five milliliters of blood specimens were withdrawn from Rattus norvegicus rats administered with 500 mg/2ml paracetamol (acetaminophen) for one day, acute toxicity study (experimental group one), 50 mg/2ml paracetamol (acetaminophen) on daily basis for thirty days, sub-chronic toxicity study (experimental group two), 50mg/2ml paracetamol (acetaminophen) on daily basis for three days, recommended therapeutic dose (experimental group three) and control group respectively. Thereafter, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, urea, creatinine, C-reactive protein and testosterone were measured using a spectrophotometer. The mean values of all the measured biochemical parameters in both experimental group one and two rats revealed statistically significant differences (p<0.05) with experimental group three rats being exception (p>0.05) as compared with that of the control group which may be suggestive of hepatic, renal, inflammatory and spermatogenesis disorders. Though the consumption of this tablet at recommended therapeutic dose was well tolerated by the rats as against its indiscriminate consumption which posed danger on the rats thus it is recommended that this tablet should be taken strictly on the prescription of a physician or health professional.

scholarly journals Determining the Effectiveness of Cognitive Behavioral Training on the Rate of C-Reactive Protein and Depression in Patients Afflicted With Rheumatoid Arthritis

2019 ◽  
Vol 6 (2) ◽  
pp. 64-68
Author(s):  
Zeinab Edalatjoo ◽  
Mohammadreza Zarbakhsh ◽  
Ahmad Shamsaldini
Keyword(s):  
Rheumatoid Arthritis ◽  
Cognitive Behavioral ◽  
Control Group ◽  
C Reactive Protein ◽  
Behavioral Training ◽  
Statistical Population ◽  
Reactive Protein ◽  
Post Test ◽  
The Mean ◽  
Experimental Group

Background: Rheumatoid arthritis is a progressive autoimmune disease with variable clinical symptoms. This study aimed to investigate the effectiveness of cognitive behavioral training on C-reactive protein (CRP) and depression in patients with rheumatoid arthritis. Methods: This research was a semi-experimental study with a pretest-posttest design and a control group. The statistical population of this study involved all women suffering from rheumatoid arthritis who went to Iran Rheumatology Center. From among them, 60 individuals were randomly selected and consigned to the control and experimental groups. The control group received only medication, and an educational package about rheumatoid arthritis provided for them. Beck’s depression and biochemical evaluations questionnaires were used to measure dependent variables. To analyze the data, multivariate analysis of covariance and SPSS. 22 software were used. Results: The mean (SD) of depression in the experimental group in the pretest was 25.5 (3.8), which decreased to 18.9 (4.2) in the post-test (P<0.01), but the mean (SD) of the control group was not statistically significant. Also, the mean (SD) of the CRP in the experimental group was 27.3 (6.9) in the pretest, which increased to 22.8 (4.6) in the post-test (P<0.01), but the mean (SD) of the control group was not statistically significant. Conclusion: This research revealed that cognitive behavioral training led to a reduction of CRP and depression in patients with rheumatoid arthritis.

scholarly journals The long-term administration of a clinoptilolite-supplemented feed to layers and its effect on performance, haematological parameters and metabolic profile

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 212-218 ◽  
Author(s):  
E. Straková ◽  
P. Suchý ◽  
I. Herzig ◽  
V. Šerman ◽  
N. Mas
Keyword(s):  
Experimental Period ◽  
Reference Intervals ◽  
Control Group ◽  
Average Weight ◽  
Adaptation Period ◽  
Mean Values ◽  
Total Plasma Protein ◽  
Term Administration ◽  
The Mean ◽  
Experimental Group

120 selected layers (Bovans Goldline hybrid) aged 19 weeks with an average weight of 1 735 g were divided into two balanced groups: control group (Group C) and experimental (Group E). Layers were reared in three-tier cages with automatic watering, manual feeding, and at controlled light and temperature regimens. One cage accommodated two layers, the floor surface area was 0.1125 m<sup>2</sup> per layer. The experiment started after a 20-day adaptation period with layers aged 22 weeks (Week 22) and ended when layers were 68 weeks old (Week 68). In a period of initiation (i.e. Weeks 19–38), layers were fed the complete feeding mixture N1. Then they received the feeding mixture N2 until the end of the experiment. Feeding mixtures in both groups (C and E) had the same composition; the only difference between mixtures was that the feeding mixture in the experimental group was enriched with 1% clinoptilolite (i.e. the commercially available additive ZeoFeed). Layers received feeding mixtures and drinking water <I>ad libitum.</I> In the course of the experimental period, control layers laid 16 289 eggs while experimental layers laid 16 474 eggs. It follows from the results that the laying intensity in experimental layers was 1.7% higher as compared to control layers, i.e. the number of laid eggs in experimental layers increased by 5.6 eggs per layer. The mean weight of all laid eggs was 66.3 ± 6.25 g in the control group and 65.6 ± 5.44 g in the experimental group (<I>P</I> ≤ 0.01). Such performance was achieved at the consumption of feeding mixture being 141.7 g per laid egg in the control group and 137.6 g per laid egg in the experimental group. The consumption of feeding mixture in the experimental group was 4.1 g lower than that in the control group. The mean values of parameters monitored in blood plasma such as uric acid, cholesterol, glucose, lactose, calcium, phosphorus, ALP, and LDH in both groups of layers ranged within reference intervals, with no significant differences being detected between both groups.However, statistically significant differences between both groups were found in total plasma protein (<I>P</I> ≤ 0.01), triacylglycerol levels (<I>P</I> ≤ 0.05), and magnesium (<I>P</I> ≤ 0.01), which were elevated in the control group, and in AST (<I>P</I> ≤ 0.05) whose level in the control group was significantly lower than that in the experimental group. The results of haematological tests performed with layers’ blood revealed statistically significant changes in parameters such as the erythrocyte count (<I>P</I> ≤ 0.01), haemoglobin level (<I>P</I> ≤ 0.01), and MCHC (<I>P</I> ≤ 0.05), which were elevated in the experimental group, and in the leukocyte count (<I>P</I> ≤ 0.05), which was lower in the experimental group, as compared with the control. However, the values found varied within physiological ranges.

scholarly journals Metabolic and Functional Profile of Premenopausal Women With Metabolic Syndrome After Training With Elastics as Compared to Free Weights

2016 ◽  
Vol 19 (2) ◽  
pp. 190-197 ◽  
Author(s):  
Jorge Flandez ◽  
Noelia Belando ◽  
Pedro Gargallo ◽  
Julio Fernández-Garrido ◽  
Ronald A. Vargas-Foitzick ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Premenopausal Women ◽  
Control Group ◽  
Positive Trend ◽  
C Reactive Protein ◽  
Functional Profile ◽  
Reactive Protein ◽  
Almost All ◽  
Sedentary Women ◽  
Experimental Group

The aim of this study was to compare the effects of a strength training program (STP) using free weights (FW) versus elastic tubing (ET) in 62 premenopausal, sedentary women diagnosed with metabolic syndrome (MS). Participants were randomly assigned to the FW or ET experimental group (EG) or a control group whose members remained sedentary. Members of each EG followed their assigned STP for 12 weeks, and biomarkers (BMs) related to MS and motor function (MF) parameters were evaluated. Both EGs showed a significant reduction in C-reactive protein level and a positive trend in the other BMs. Almost all MF parameters increased significantly in both EGs. No positive changes were found in the CG. These results indicate that the implementation of an STP, with either FW or ET, improves both metabolic health and MF and should be considered part of the basic approach to health care in women.

scholarly journals High Sensitivity C-reactive Protein in Patients with Coronary Artery in-stent Restenosis: A Case-control Study

2021 ◽  
Vol 15 (1) ◽  
pp. 29-37
Author(s):  
Hussein M. Ismail ◽  
Ahmed O. Abaza ◽  
Gamela M. Nasr ◽  
Hesham Hegazy
Keyword(s):  
Coronary Artery ◽  
Case Control Study ◽  
High Sensitivity ◽  
Control Group ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Stent Restenosis ◽  
The Mean ◽  
Serial Measurements ◽  
Control Study

Background: Inflammation plays a pivotal role in the pathogenesis of In-Stent Restenosis (ISR). High sensitivity C-reactive protein (hsCRP) is positively associated with major cardiovascular events. Aim: We aimed to investigate the hsCRP inflammatory response to Percutaneous Coronary Intervention (PCI) in Coronary Artery Disease (CAD) patients with coronary ISR vs. patients without ISR. Methods: This case-control study included 80 CAD patients previously treated with drug-eluting stent (DES) implantation. Patients had Coronary Angiography (CAG) because of chest pain or equivalent symptoms and were subdivided into 2 groups. Group A (n=40) included CAD patients with ISR. Group B (n=40) included age and gender-matched controls with CAD but without ISR. Serum hsCRP levels were obtained before PCI (baseline) and 8, 16, 24 h post-PCI. Results: At baseline (before intervention/CAG), the hsCRP level was increased in the ISR group compared with the No-ISR group (p=0.007). There were 36 (90%) patients in the ISR group who had a high hsCRP (>3 mg/L) compared with 25 (62.5%) patients in the No-ISR group. Also, there was a significant relationship between high hsCRP and the ISR. Patients with ISR had higher frequencies and percentages of elevated CRP than the no-ISR control group. This difference was maintained for all measurements, baseline, after 8, 16, and 24 h (p<0.05). Repeated measures analysis of variance (ANOVA) in the ISR group revealed that mean hsCRP differed significantly between serial measurements (p<0.001). In contrast, in the control group, the mean hsCRP did not differ significantly between the serial measurements (p=0.65). Most of our patients (n=66, 82.5%) had 1-vessel CAD disease, and the left anterior descending (LAD) coronary artery was significantly affected in 46 patients (57.5%). Management of restenosis was accomplished mainly by stenting by DES in 29 patients (72.5%). Conclusion: Patients with ISR had substantially higher pre- and post-PCI hsCRP levels than the no-ISR controls. This difference was maintained up to 24h post-PCI. Conversely, the mean hsCRP did not significantly differ at the follow-up points for the controls without ISR.

scholarly journals Comparison of C-Reactive Protein in Dried Blood Spots and Saliva of Healthy Adolescents

2021 ◽  
Vol 12 ◽  
Author(s):  
Anne-Christine Plank ◽  
Janina Maschke ◽  
Nicolas Rohleder ◽  
Peter A. Fasching ◽  
Matthias W. Beckmann ◽  
...  
Keyword(s):  
Total Sample ◽  
Dried Blood Spots ◽  
Oral Health Status ◽  
C Reactive Protein ◽  
Mean Values ◽  
Blood Spots ◽  
Reactive Protein ◽  
Non Invasive ◽  
The Mean ◽  
One Way Anova

Background/AimDetermining C-reactive protein (CRP) by non-invasive methods is of great interest for research addressing inflammation in young people. However, direct comparisons of such methods applied in children and adolescents are lacking so far. This study aimed to evaluate the association between CRP measured in dried blood spots (DBS CRP) and in saliva (sCRP), two less invasive alternatives to venipuncture, in 12- to 14-year-old adolescents. To evaluate the validity of both measurements in the context of biobehavioral studies, the potential of DBS CRP and sCRP to discriminate between defined BMI subgroups was assessed.Materials and MethodsCRP levels in DBS and saliva collected from 87 healthy adolescents (M = 13.25 years, SD = 0.30, 51.7% females) were determined using high sensitive CRP ELISA for serum and salivary CRP ELISA, respectively. Characteristics and correlation of both measurements were assessed for the total sample and for three subgroups classified by BMI percentile ranges (A: ≤ 25; B: 26–74; C: ≥ 75).ResultsIn the total sample, DBS CRP and sCRP were significantly associated (r = 0.59, p &lt; 0.001). Splitting the sample into BMI-dependent subgroups revealed similarly strong associations of DBS CRP with sCRP for all three groups (A: r = 0.51; B: r = 0.61; C: r = 0.53). However, comparing the mean CRP values per BMI subgroup, one-way ANOVA reported significant differences for DBS CRP, but not for sCRP mean values.ConclusionsThe significant correlation of DBS CRP with sCRP was independent of the investigated BMI range groups, yet BMI-dependent distinction was only provided by DBS CRP mean values. Overall, our results suggest that DBS CRP is likely to reflect systemic inflammation more precisely. Salivary CRP can be alternatively determined in studies with adolescents when conditions require it, given the oral health status is assessed. Considering that DBS CRP and sCRP share only 35% of common variance, further studies should examine their specific validity.

scholarly journals Cytomegalovirus (CMV) and C-Reactive Protein (CRP) and their Association with Atherosclerosis in Patients with End Stage Renal Disease

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
A M Okba ◽  
M A Raafat ◽  
M N Farres ◽  
N A Melek ◽  
M M Doss ◽  
...  
Keyword(s):  
Mean Value ◽  
Control Group ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
The Mean ◽  
Stage Renal Disease ◽  
End Stage ◽  
Serum Crp ◽  
Atherosclerotic Changes ◽  
Esrd Patients

Abstract Background ESRD (end stage renal disease) is associated with an increase in the risk for cardiovascular disease, which can only be partially explained by known classical risk factors. However, chronic inflammation and endothelial dysfunction are key events in the development of atherosclerosis; both are observed in ESRD patients . The significance of C-Reactive Protein (CRP) and inflammation has increased over time, especially in the ESRD population. From being a simple marker, it now shown that CRP has an active participation in pro-atherosclerotic phenomenon including local pro-inflammatory and thrombotic events. Studies in the general population indicate the usefulness of CRP in prognosis and in monitoring response to therapy. Cytomegalovirus (CMV) is an important pathogen in immunocompromised individuals. Patients with ESRD display signs of frequent CMV re-activation, which may be caused by the uraemia-associated defect in cellular immunity. It has been well documented that hemodialysis patients have impaired immune response, which may result in higher prevalence rates of viral infections, including CMV. Infections in these patients may be due to primary infection or, more commonly, by reactivation of latent virus or re-infection with exogenous virus, which may be introduced by blood transfusion or kidney transplant. Infection with CMV is also considered a risk factor for progression of atherosclerotic disease. Methods CRP and CMV IgG level was measured in the blood samples of sixty adult patients diagnosed as ESRD, 30 ESRD patients with atherosclerotic changes(Group I) and 30 ESRD patients without atherosclerotic changes (Group II) and in comparison with 30 control subjects(Group III) (Control Group). Results The mean value of CRP in the control group (6.0 ± 4.2), the mean value in the ESRD patients with atherosclerotic changes group (15.8 ± 5.6) and the mean value in the ESRD patients without atherosclerotic changes group (11.2 ± 3.9),thus the mean values of CRP in ESRD patients groups were significantly higher than that of the control group (P &lt; 0.001) and the mean value of CRP in ESRD with atherosclerotic changes is significantly higher compared to ESRD without atherosclerotic changes group (P &lt; 0.001). Regarding CMV IgG antibodies it was significantly higher in ESRD patients compared to the control group and was also significantly higher in ESRD with atherosclerotic changes compared to ESRD without atherosclerotic changes. Conclusions ESRD are at greater risk of inflammatory reaction against factors originating from graft, fistula, dialysis membrane, infection sites. These reactions are associated with increased levels inflammatory markers such as serum CRP. Serum CRP seems to have a contribution in the development of cardiovascular complications in ESRD patients.CMV seropositivity is also significantly associated with atherosclerotic disease in ESRD patients. Our data suggest that the risk for progressive atherosclerosis is specifically increased in patients with an inflammatory response to CMV and elevated CRP level.

scholarly journals Experimental pleural empyema model in rabbits: Why, how and what are the next steps

2014 ◽  
Vol 71 (5) ◽  
pp. 491-498 ◽  
Author(s):  
Vlado Cvijanovic ◽  
Danilo Vojvodic ◽  
Dragan Djurdjevic ◽  
Milena Jovic ◽  
Vojkan Stanic ◽  
...  
Keyword(s):  
Pleural Fluid ◽  
Ph Value ◽  
Lethal Dose ◽  
Pleural Empyema ◽  
Control Group ◽  
Mean Values ◽  
Experimental Animals ◽  
Fluid Analysis ◽  
The Mean ◽  
Experimental Group

Bacgraund/Aim. The use of new therapeutic methods to prevent development of fibrothorax as the final complication of the human pleural infections requires research with experimental animals. The aim of this study was to standardize the procedures for the establishment of our own experimental model of empyema in rabbits, since it should be able to offer similar conditions found in human pleural infections. Methods. This experiment included 15 chinchilla rabbits, weighing from 2.3 to 2.8 kg. There were 12 rabbits in the experimental group, while 3 rabbits formed the control group. On the first day, we administered 0.4-0.5 mL of turpentine in the right pleural space of the rabbits from the experimental group in order to provoke sterile exudative pleurisy. After 24 h we injected 1 mL of Staphylococcus aureus and 1 mL of Escherichia coli bacteria in the same concentration of 4.5 x 108 bacteria/mL. Thoracocentesis for the pleural fluid analysis was performed 24, 48, 72, and 96 h after bacteria instillation. In these pleural samples we estimated the number of leucocytes and the values of lactate dehydrogenase (LDH), glucose and pH in pleural fluid, as well as the presence of bacteria. We did not protect the animals with antibiotics, and on the day 7 of the experiment they were sacrificed with the lethal dose of barbiturate (iv). The lung from the empyemic side of all experimental animals and the lung of one control animal were histopathologically examined. Results. A total of 4 animals had a small amount of clear pleural fluids or there was no fluid obtained with thoracocentesis 24 and 48 h after the bacteria instillation. after the bacteria instillation. In the remaining 8 rabbits 24 h after bacteria administration the mean values (? SD) of the parameters monitored were as follows: Le 34.75 ? 6.13 x 109/L, LDH 17,000 ? 4,69 U/L, glucose 1.23 ? 0.45 mmol/L, and pH 6.975 ? 0.15. The obtained values met the criteria for the evaluation of effusion as pleural empyema or complex and complicated pleural effusion (LDH > 1000 U/L, glucose < 2.31 mmol/L and pH < 7.20). Bacterial cultures were positive in 5 out of 8 first pleural samples and in only 2 samples after 48 h of bacteria administration. There was a positive correlation between the number of leukocytes and the LDH value (r = 0.071, p < 0.001), and a negative correlation between the number of leukocytes and the glucose level (r = 0.864, p < 0.001), and the leukocytes number and pH of the pleural fluid (r = 0.894, p < 0.001). The mean glucose value increased after 48 h (3.23 ? 0.44 mmol/L), and the pH value rose after 72 h (7.22 ? 0.03) which was beyond the empyema level. Conclusion. The creation of the experimental empyema model is a very delicate work with uncertain success. Its value and importance are crucial for pleural pathology research. With the intention to obtain a more empyemic pleural reaction we created a model with two different human pathogen bacteria. We generated the satisfactory results, but not as good as those contained in some of the reference literature data.

scholarly journals Comparison of Orthodontic Root Resorption of Root-filled and Vital Teeth Using Micro–computed Tomography

2019 ◽  
Vol 90 (1) ◽  
pp. 56-62 ◽  
Author(s):  
Kadir Kolcuoğlu ◽  
Aslihan Zeynep Oz
Keyword(s):  
Computed Tomography ◽  
Tooth Extraction ◽  
Root Resorption ◽  
Cervical Region ◽  
Control Group ◽  
Micro Computed Tomography ◽  
Mean Values ◽  
The Mean ◽  
The Difference ◽  
Experimental Group

ABSTRACT Objective To evaluate the difference in orthodontic root resorption between root-filled and vital teeth. Material and Methods Sixteen individuals who required bilateral premolar tooth extraction due to orthodontic treatment and had a previously root-filled premolar tooth on one side were included in the study. The experimental group consisted of root-filled premolar teeth, and the control group consisted of contralateral vital premolar teeth. A 150-g buccally directed force was applied to these teeth using 0.017 × 0.025-inch TMA cantilever springs. The premolars were extracted 8 weeks after the application of force. Images were obtained using micro–computed tomography. Resorption measurements were obtained using the Image J program. Results The mean values for resorption were 0.08869 mm3 for the root-filled teeth and 0.14077 mm3 for the contralateral teeth, indicating significantly less resorption for the root-filled teeth compared with the contralateral teeth after the application of orthodontic force (P = .003). In both groups, the most resorption was seen on the cervical-buccal and apical-lingual surfaces. The mean resorption value of the cervical region was 0.06305 mm3 in the control group and 0.0291 mm3 in the experimental group, and the difference was statistically significant (P = .002). Conclusions Root-filled teeth showed significantly less orthodontic root resorption than vital teeth.

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