scholarly journals Comparative Evaluation of the Fracture Resistance of Teeth prepared with Rotary System, filled with single Cone Gutta-percha and Laterally Condensed with Zinc Oxide Eugenol and Resin based (AH26) Sealers to that of Resilon

2012 ◽  
Vol 13 (6) ◽  
pp. 773-781 ◽  
Author(s):  
P Manoranjan Reddy ◽  
P Kashi Vishwanathan ◽  
Sabir Muliyar ◽  
Prakash Chavan ◽  
T Praveen Kumar Reddy ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Fracture Resistance ◽  
Control Group ◽  
Root Canals ◽  
Group 4 ◽  
Gutta Percha ◽  
Zinc Oxide Eugenol ◽  
Single Cone ◽  
Group 3 ◽  
Group 2

ABSTRACT Aim and objective To compare the fracture resistance of teeth prepared with rotary system and filled with single cone guttapercha followed by lateral condensation with different sealers like zinc oxide eugenol and resin based (AH26) to that of resilon. Materials and methods A total number of 70 extracted intact human permanent maxillary incisors were selected. All prepared samples were divided into one control group (n = 10) and three experimental groups (n = 20 per group). Group 1 control. This group received no obturation; the root canal opening was sealed with a temporary filling material (Cavit, Premier Dental Products, Plymouth Meeting, PA) Group 2: Gutta-Percha and zinc oxide Eugenol sealer. Group 3: Gutta-Percha and AH26 sealer. (DiaDent, Korea) dipped in AH26 sealer. Group 4: Resilon cones and RealSeal Resin Sealer. Obturation was accomplished using a 0.06 taper size 40 gutta-percha master point. All the root samples were stored in 100% humidity at 37°C for 2 weeks to allow the sealer to set completely. The root samples were then prepared for mechanical testing and the data was recorded and analyzed statistically. Results One-way ANOVA and Post hoc test (Duncan Multiple range test) were employed to determine possible statistical variation among the groups tested in this study. The force for group 2 was significantly greater than that for the control group 1 (no obturation). The force for group 3 was significantly greater than that for group 2. The force for group 4 was significantly greater than that for group 3. All other groupwise comparisons were not significant at 5% level. Group 4 seemed to have the greatest force among the three groups of interest in the study. Conclusion Root canals filled with Resilon increased the in vitro resistance of single canal extracted teeth compared to other experimental groups. The mean fracture resistance value for the experimental groups in ascending order was as follows: Root canals instrumented but not filled, filled with gutta-percha and zinc oxide eugenol sealer, filled with gutta-percha and AH26 sealer and filled with Resilon. Clinical significance Resilon is a promising material for reinforcement of endodontically treated teeth. How to cite this article Vishwanathan PK, Muliyar S, Chavan P, Reddy PM, Reddy TPK, Nilawar S. Comparative Evaluation of the Fracture Resistance of Teeth prepared with Rotary System, filled with single Cone Gutta-percha and Laterally Condensed with Zinc Oxide Eugenol and Resin based (AH26) Sealers to that of Resilon. J Contemp Dent Pract 2012;13(6):773-781.

scholarly journals AN INVITRO COMPARATIVE EVALUATION OF FRACTURE RESISTANCE OF ENDODONTICALLY TREATED TEETH OBTURATED WITH RESILON AND GUTTA-PERCHA

2014 ◽  
Vol 04 (03) ◽  
pp. 075-079
Author(s):  
Kiran Halkai ◽  
Rahul Halkai ◽  
Mithra N. Hegde ◽  
Vijay Kumar ◽  
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
Control Group ◽  
Endodontically Treated Teeth ◽  
Group 4 ◽  
Anterior Teeth ◽  
Ah Plus ◽  
Group 3 ◽  
Group 2

Abstract Aim: To compare and evaluate in-vitro the fracture resistance of endodontically treated teeth obturated with resilon & epiphany sealer and guttapercha using different sealers. Epoxy resin based sealer AH-plus and zinc oxide eugenol based sealer-TubliSeal (EWT). Methodology: sixty four human single rooted maxillary anterior teeth, cleaned stored in 0.9% saline. All the teeth were decoronated to root length 14mm and bucco-lingual diameter of 5-7mm, After access openings teeth were instrumented using K3.06 up to final apical size 30/.06 and randomly allocated into 4 experimental groups (n=16 per group). Group 1(Control group): teeth were instrumented but not obturated, Group 2: Resilon cones and epiphany SE-sealer. Group 3: guttapercha cones and epoxy based sealer AH plus. Group 4: guttapercha and Tubli seal EWT. Coronal seal was done using IRM cement. Each of the specimens were tested for fracture resistance by instron universal testing machine. Results: Higher fracture resistance values were observed for group 2 (Resilon & Epiphany SE sealer) followed by group 3(Guttapercha & AH Plus sealer) and group 4(Guttapercha & TubliSeal EWT) when compared to group1 (control-instrumented but not obturated). Conclusion: filling the root canals with contemporary polymer based root canal obturating system- Resilon increased the in vitro fracture resistance of endodontically treated teeth.

scholarly journals The Effect of Intraradicular Multiple Fiber and Cast Posts on the Fracture Resistance of Endodontically Treated Teeth with Wide Root Canals

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Satheesh B. Haralur ◽  
Maram Awdah Al Ahmari ◽  
Safeyah Abdurrahman AlQarni ◽  
Mashael Khaled Althobati
Keyword(s):  
Fracture Resistance ◽  
Pairwise Comparison ◽  
Fracture Load ◽  
Resin Cement ◽  
Endodontically Treated Teeth ◽  
Cast Metal ◽  
Root Canals ◽  
Group 4 ◽  
Group 3 ◽  
Group 2

Introduction. The endodontically treated teeth (ETT) with thin remaining radicular dentin thickness are predisposed to fracture; hence it requires the diligent selection and the execution of endodontic post treatment. The objective of the study was to evaluate the reinforcing effect of both multiple fiber reinforced composite (FRC) and Ni-Cr cast metal posts at anterior and posterior regions. Material and Methods. Forty recently extracted root canal treated canine and single rooted premolar teeth were used for the study. They were randomly divided into four groups (n=10) as: Group 1, single FRC post; Group 2, multiple FRC posts; Group 3, single Ni-Cr metal post, Group 4, multiple Ni-Cr posts. The posts were cemented with self-adhesive resin cement and subsequently restored with full veneer metal crown. The compressive static load at 1300 for canine and 450 for premolar was applied with the cross-head speed of 0.5mm/minute until the fracture. The obtained data was analyzed using the Kruskal–Wallis and Pairwise comparison tests with SPSS. Results. The results indicate that multiple FRC post restored canine had the maximum fracture load (1843.80±7.13 N), followed by cast multiple posts (1648.99±26.84 N), single fiber post (1623±40.31 N), and cast metal single post (1493±27.33 N). A similar trend was observed in premolar with higher max fracture load with multiple FRC posts at 1920.86±20.61 N and multiple cast metal posts at 1735.43±6.05 N. Conclusion. The restoration of ETT with larger canals by multiple FRC and metal posts provides substantially higher fracture resistance in comparison to wider single post.

scholarly journals In vivo microbiological evaluation of the effect of biomechanical preparation of root canals using different irrigating solutions

2006 ◽  
Vol 14 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Mário Tanomaru Filho ◽  
José Carlos Yamashita ◽  
Mario Roberto Leonardo ◽  
Léa Assed Bezerra da Silva ◽  
Juliane Maria Guerreiro Tanomaru ◽  
...  
Keyword(s):  
Saline Solution ◽  
Antimicrobial Effect ◽  
Control Group ◽  
Periapical Lesions ◽  
Root Canals ◽  
Group 4 ◽  
Number Of Microorganisms ◽  
Group 3 ◽  
Group 2

The aim of this study was to evaluate the antimicrobial effect of biomechanical preparation using different irrigating solutions. Seventy-eight root canals from premolars of four dogs were used. After experimental induction of periapical lesions, the root canals were prepared using the following solutions for irrigation: Group 1) 2.5% sodium hypochlorite (NaOCl); Group 2) 2% chlorhexidine (CHX); Group 3) saline solution and Group 4) control group with no biomechanical preparation. The microbiological evaluation of the root canals was performed by counting the colony forming units (CFUs) using different culture mediums. Two absorbent paper cones were used in each root canal in order to collect the microbiological samples before, and thirty days after the biomechanical preparation. The culture plates were incubated in aerobic, anaerobic and microaerophilic environment. Statistical evaluation was carried out using analysis of variance, Tukey and Student tests. The results demonstrated that there was reduction in the number of microorganisms in the NaOCl and CHX groups (p<0.05). There was greater effectiveness in the chlorhexidine group. The group that used saline solution and the control group presented an increased number of microorganisms. It can be concluded that the use of antimicrobial irrigating solutions during biomechanical preparation promotes the reduction of endodontic microbiota. However, a considerable number of microorganisms were still observed.

scholarly journals Comparative Evaluation of Root Dentin Microhardness after using Different Standard Irrigating Solutions and Stevia Leaf Extract- An In vitro Study

2020 ◽  
Author(s):  
Avani Paresh Shah ◽  
Rushikesh Mahaparale ◽  
TM Mangala ◽  
Adish Anand Saraf ◽  
Sneha Mali ◽  
...  
Keyword(s):  
Normal Saline ◽  
Leaf Extract ◽  
Control Group ◽  
Root Canals ◽  
Extract Solution ◽  
Group 4 ◽  
Root Dentin ◽  
Group 3 ◽  
Group 2

Introduction: Success in endodontic therapy largely depends on mechanical and chemical debridement of the root canals by using instruments and effective irrigating solutions which are not only important for cleaning and disinfecting the root canals, but also, are capable of altering the chemical and structural properties of dentin. As the microhardness test is sensitive to surface changes of tooth structure, it is useful in making a correlation between irrigating solutions and root dentin microhardness. Aim: To evaluate the effect of different standard irrigating solutions at standard concentrations and Stevia leaf extract (2.5%) on the microhardness of root canal dentin. Materials and Methods: This is an in-vitro comparative study where forty intact single rooted teeth were selected and decoronated to get an apico-coronal length of 10 mm and were randomly divided into four groups as per the irrigant used; Group 1 (control): Irrigation with Normal saline, Group 2: Irrigation with 2.5% Sodium Hypochloride (NaOCl) followed by 17% EDTA, Group 3: Irrigation with 2.5% Stevia extract solution, Group 4: Irrigation with SmearClear solution. They were prepared using ProTaper Universal Rotary Files with intermittent irrigation with the respective irrigating solution. The teeth were then embedded in acrylic resin and subjected to Vicker’s Hardness test and the data obtained were analysed using one way ANOVA test. p<0.05 was taken to be statistically significant. Results: At 500 microns, Vickers Hardness Number (VHN) value was less than at 1000 micron, but was not statistically significant, (p>0.05). Between the groups, the control group showed the highest microhardness at 500 and 1000 microns, namely, 51.27±4.36 VHN and 53.60±5.12 VHN, respectively. Group 3 and 4 showed a comparable reduction in microhardness with Group 3 showing slightly better results (47.98±4.34 VHN and 48.89±5.26 VHN, respectively) as compared to Group 4 (47.36±5.50 VHN and 48.62±5.84 VHN, respectively). Group 2 showed the least value (36.60±5.71 VHN and 37.11±5.82 VHN, respectively). Conclusion: Within the limitations of this study, teeth irrigated with normal saline showed least reduction in microhardness followed by irrigation with Stevia leaf extract solution, SmearClear and Hypochlorite followed by EDTA.

scholarly journals Sealing Ability of Novel Hydrophilic Single-Cone Obturation Systems in an Oval Canal: an In-Vitro Glucose Leakage Study

2014 ◽  
Vol 02 (03) ◽  
pp. 125-129
Author(s):  
Vibha Hegde ◽  
Shashank Arora
Keyword(s):  
Root Canal ◽  
Leakage Model ◽  
Group 4 ◽  
Gutta Percha ◽  
Sealing Ability ◽  
Single Cone ◽  
Ah Plus ◽  
Group 3 ◽  
Group 2

Abstract Objective: To compare the sealing ability of three single-cone obturation systems using a glucose leakage model. Materials and Methods: A total of 90 freshly extracted human mandibular incisors with oval canals were selected and their crowns were cut. The root canal of each sample was instrumented using a rotary crown down technique and then divided into four experimental (n = 20 each) and two control groups (n = 5 each). Samples in the experimental groups were filled as follows: Group 1, cold lateral condensation using Gutta-percha/AH Plus; Group 2, single-cone C-Points/Smart-Paste Bio Sealer; Group 3, single cone Bio-Ceramic Impregnated Gutta-Percha/Endo-Sequence Bio-Ceramic Sealer; Group 4, single-cone Resilon/RealSeal SE. After 7 days, the sealing ability of root canal fillings was tested at different time intervals using glucose leakage model. Glucose leakage values were measured using a spectrophotometer and statistically analyzed. Results: The four experimental groups presented significantly different glucose leakage values at all test periods (P < 0.05). At the end of the observation period, the cumulative glucose leakage values of Groups 2 and 3 were significantly lower than those of Groups 1 and 4 (P < 0.05). Conclusion: C-Points/Smart-Paste Bio and Bio-Ceramic Impregnated Gutta-Percha/Endo-Sequence Bio-Ceramic Sealer combinations provided the superior sealing ability over the lateral condensation technique.

scholarly journals Fracture resistance of immature teeth filled with mineral trioxide aggregate, bioaggregate, and biodentine

2016 ◽  
Vol 10 (02) ◽  
pp. 220-224 ◽  
Author(s):  
Emre Bayram ◽  
Huda Melike Bayram
Keyword(s):  
Fracture Resistance ◽  
Mineral Trioxide Aggregate ◽  
Mean Values ◽  
Root Canals ◽  
Immature Teeth ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Post Hoc ◽  
Group 1

ABSTRACT Objective: The purpose of this study was to evaluate fracture resistance of teeth with immature apices treated with coronal placement of mineral trioxide aggregate (MTA), bioaggregate (BA), and Biodentine. Materials and Methods: Forty-one freshly extracted, single-rooted human premolar teeth were used for the study. At first, the root length was standardized to 9 mm. The crown-down technique was used for the preparation of the root canals using the rotary ProTaper system (Dentsply Maillefer, Ballaigues, Switzerland) of F3 (30). Peeso reamer no. 6 was stepped out from the apex to simulate an incompletely formed root. The prepared roots were randomly assigned to one control (n = 5) and three experimental (n = 12) groups, as described below. Group 1: White MTA (Angelus, Londrina, Brazil) was prepared as per the manufacturer's instructions and compacted into the root canal using MAP system (Dentsply Maillefer, Ballaigues, Switzerland) and condensed by pluggers (Angelus, Londrina, Brazil). Group 2: The canals were filled with DiaRoot-BA (DiaDent Group International, Canada). Group 3: Biodentine (Septodont, Saint Maur des Fosses, France) solution was mixed with the capsule powder and condensed using pluggers. Instron was used to determine the maximum horizontal load to fracture the tooth, placing the tip 3 mm incisal to the cementoenamel junction. Mean values of the fracture strength were compared by ANOVA followed by a post hoc test. P < 0.05 was considered statistically significant. Results: No significant difference was observed among the MTA, BA, and biodentine experimental groups. Conclusion: All the three materials tested, may be used as effective strengthening agents for immature teeth.

scholarly journals Antioxidant Effect of MnTE-2-PyP on Lung in Asthma Mice Model

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Lyudmil Terziev ◽  
Violeta Dancheva ◽  
Veneta Shopova ◽  
Galya Stavreva
Keyword(s):  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Control Group ◽  
Mice Model ◽  
Antioxidant Defence ◽  
Group 4 ◽  
Antioxidant Defence System ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Aim. To investigate the effects of MnTE-2-PyP on some markers of antioxidant defence system in asthma mice model.Material and Methods. The animals were divided into four groups: group 1, controls; group 2, injected with ovalbumin, group 3, treated with MnTE-2-PyP, and group 4, treated with ovalbumin and MnTE-2-PyP. The activities of superoxide dismutase, catalase, glutathione peroxidase and nonprotein sulfhydryl groups content (NPSH) were determined in lung homogenate.Results. The activities of superoxide dismutase and catalase in group 2 decreased significantly as compared to control group. The decrease of the same enzymes in group 4 was lower and significant as compared to group 2. Changes in the glutathione peroxidase activity showed a similar dynamics. The NPSH groups content decreased in group 2. In group 4 this decrease was relatively lower as compared to group 2.Conclusions. The application of MnTE-2-PyP mitigated the effects of oxidative stress in asthma mice model.

scholarly journals Effectiveness of medical treatment in overcoming the ureteral double-J stent related symptoms

2012 ◽  
Vol 6 (6) ◽  
pp. 234 ◽  
Author(s):  
Ugur Kuyumcuoglu ◽  
Bilal Eryildirim ◽  
Murat Tuncer ◽  
Gokhan Faydaci ◽  
Fatih Tarhan ◽  
...  
Keyword(s):  
The Body ◽  
Control Group ◽  
Group 4 ◽  
Double J Stent ◽  
Urinary Tract Symptoms ◽  
Stone Treatment ◽  
Group 3 ◽  
Group 5 ◽  
Group 2

Background: We investigated whether the frequency of lower urinary tract symptoms (LUTS) increased in patients in whom double-J stents were applied. We also evaluated several medical therapy protocols to treat symptoms related with ureteral stents.Materials and Methods: A total of 108 patients, in whom unilateral double-j stent was applied during ureteral stone treatment, were included. Before the double-J stent was applied, all patients completed storage components of the “International Prostate Symptom Score” (IPSSs), quality of life components of the IPSS (IPSS-QOL) and “Overactive Bladder Questionnaire” (OABq) forms and scores were calculated. After the procedure, cases were randomized into 5 groups, an antiinflammatory was given to Group 1, spasmolytic to Group 2, anticholinergic to Group 3 and α-blocker to Group 4. No additional drug was given to Group 5 as this control group. During the fourth week of the procedure, IPSSs, IPSS-QOL and OABq forms were again completed and scores were compared with the previous ones.Results: When all the cases were evaluated, the IPSSs, IPSS-QOLand OABq scores of patients in whom the double-J stent was applied were statistically significantly higher the procedure. Compared to the control group, the cases where the double-J stent was applied showed a higher IPSSs, IPSS-QOL and OABq scores and none of the medical therapies could prevent this increase.Interpretation: The frequency of LUTS increased in cases where the ureteral stent was applied and discomfort continued as long as the stent stayed in the body.

scholarly journals Pengaruh Monoklonal Antibodi Bovine Zona Pelusida 3 (bZP3) terhadap Diameter dan Atresia Folikel Ovarium Mencit (Mus musculus)

2018 ◽  
Vol 24 (1) ◽  
pp. 37
Author(s):  
Annisa Trissatharra ◽  
Sri Ratna Dwiningsih ◽  
Ratna Sofaria Munir
Keyword(s):  
Mus Musculus ◽  
Ovarian Follicles ◽  
Observation Time ◽  
Control Group ◽  
Control Group Design ◽  
Treatment Groups ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Objectives: To identify the effect of monoclonal antibody bZP3 at ovarian follicles that undergo atresia and diameter of various ovarian follicles.Materials and Methods: This is a true experimental research with post only control group design. Samples were 36 female mices (Mus musculus) which is divided into 6 groups, there are 3 control groups (group 1, 2, and 3) injected by Phospatase Buffer Saline (PBS) 50µl and 3 treatment groups (group 4, 5, and 6) injected by Mab bZP3 50µl. Group 1 and 4 terminated at 5th day, group 2 and 5 terminated at 10th day, and group 3 and 6 terminated at 20th day. Evaluation of atretic ovarian follicles and diameter of ovarian follicles performed by hematoxylin eosin (HE) and the data processed by parametric statistic.Results: There are no significant in different among groups in the aspect of atretic follicles and diameter of folicles (p>0.05), but descriptively, number of follicles undergo atresia of the follicle primary, secondary, and tertiary treatment group was higher than the control group, except on the 20th day of observation time.Conclusion: administration of Mab bZP3 had no effect to amount of atretic follicles and diameter of folicles during observation time.

scholarly journals Zingerone Ameliorates Hepatotoxicity

2020 ◽  
Vol 11 (1) ◽  
pp. 280-284 ◽  
Author(s):  
Julietpoornamathy J ◽  
Parameswari C.S.
Keyword(s):  
The Body ◽  
Control Group ◽  
Medical Sciences ◽  
Toxic Compounds ◽  
Group 4 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Insight Into ◽  
Group 1

In medical sciences, toxicity is an area wherein extensive studies have been carried to improve the diseases as well as to prevent. So, there is a high requirement for novel and improved alternative therapeutic strategies to manage diseases. The liver is the largest gland in the body, which executes several important mechanisms; it stores minerals and vitamins and releases them in periods of need. The main aim of this study was to give a closer insight into potent non- toxic compounds that is capable of modifying the responses. Animals were divided into five equal groups viz control (Group 1), administered with food and water ad libitum, (Group 2) administered with olive oil, (Group 3) administered with zingerone, (Group 4) administered with concanavalin A, (Group 5) administered with cyclosporine A followed by zingerone. Our results revealed significant changes in liver marker enzymes and liver histology of zingerone treated rats when compared to control rats.  A corollary, zingerone has no toxic effect on hepatocytes and was found to be safe at a dose of 10mg/kg b wt and also ameliorates hepatotoxicity.

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