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 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 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 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.

Evaluation of the Effect of Different Ferrule Designs on the Fracture Resistance of Endodontically Treated Maxillary Central Incisors Incorporating Fiber Posts, Composite Cores and Crown Restorations

2007 ◽  
Vol 8 (7) ◽  
pp. 62-69 ◽  
Author(s):  
Emre Ozel ◽  
Idil Dikbas ◽  
Jale Tanalp ◽  
Temel Koksal ◽  
Mustafa Ersoy
Keyword(s):  
Fracture Resistance ◽  
Quartz Fiber ◽  
Group 4 ◽  
Fiber Posts ◽  
Significant Difference ◽  
Group 6 ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

Abstract Aim The purpose of this study was to evaluate the fracture resistance of endodontically treated maxillary central incisors restored with quartz fiber posts, composite cores, and crowns when different types of ferrule designs were incorporated. Methods and Materials Sixty maxillary incisors were divided into six groups: Group 1 (control): teeth with root canal treatments having a full crown prosthesis; Group 2: teeth with a 2 mm circumferential ferrule; Group 3: teeth with a 2 mm ferrule only in the vestibular region; Group 4: teeth with a 2 mm ferrule only in the palatal region; Group 5: teeth with a 2 mm ferrule in the vestibular and palatal region, having cavities in both proximal areas; and Group 6: teeth with no ferrule. The teeth in the experimental groups were restored with quartz fiber posts-composite cores and full metallic crowns. All experimental teeth were subjected to an increasing compressive force with a crosshead speed of 1 mm/min, until fracture occurred. Results The median fracture values of groups were as follows: Group 1: 574.4 N, Group 2: 472.4 N, Group 3: 474.3 N, Group 4: 480.7 N, Group 5: 463.1 N, and Group 6: 297.9 N. A statistically significant difference was found between Group 1 and Group 6 (p< 0.01). Conclusion It was concluded different ferrule designs did not have any influence on the fracture resistance of teeth with fiber posts. The results of this study indicate fiber posts can safely be used for their reinforcing properties. Furthermore, there is no significant change in the resistance of teeth with fiber posts regardless of which ferrule design is incorporated. The property of these types of posts is an additional advantage in clinical practice. Citation Dikbas I, Tanalp J, Ozel E, Koksal T, Ersoy M. Evaluation of the Effect of Different Ferrule Designs on the Fracture Resistance of Endodontically Treated Maxillary Central Incisors Incorporating Fiber Posts, Composite Cores and Crown Restorations. J Contemp Dent Pract 2007 November; (8)7:062-069.

scholarly journals Fracture Resistance of Composite Veneers with Different Preparation Designs

2016 ◽  
Vol 20 (2) ◽  
pp. 99-103
Author(s):  
Katerina Zlatanovska ◽  
Ljuben Guguvcevski ◽  
Risto Popovski ◽  
Cena Dimova ◽  
Ana Minovska ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
In Vitro Study ◽  
Fracture Load ◽  
Group 3 ◽  
The Mean ◽  
Group 2 ◽  
Preparation Design ◽  
Frequent Localization ◽  
Group 1

Summary Background: The aim of this in vitro study was to examine the fracture load of composite veneers using three different preparation designs. Material and methods: Fifteen extracted, intact, human maxillary central incisors were selected. Teeth were divided into three groups with different preparation design: 1) feather preparation, 2) bevel preparation, and 3) incisal overlap- palatal chamfer. Teeth were restored with composite veneers, and the specimens were loaded to failure. The localization of the fracture was recorded as incisal, gingival or combined. Results: Composite veneers with incisal overlap - palatal chamfer showed higher fracture resistance compared to feather preparation and bevel preparation. The mean (SD) fracture loads were: Group 1: 100.6±8.0 N, Group 2: 107.4±6.8 N, and Group 3: 122.0±8.8 N. The most common mode of failure was debonding for veneers with feather preparation and fracture when incisal edge is reduced. The most frequent localization of fracture was incisal. Conclusion: The type of preparation has a significant effect on fracture load for composite veneers. This study indicates that using an incisal overlap- palatal chamfer preparation design significantly increases the fracture resistance compared to feather and bevel preparation designs.

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 Effect of Er,Cr:YSGG Laser Irradiation with Radial Firing Tips onCandida albicansin Experimentally Infected Root Canals

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Leman Ozkan ◽  
Serap Cetiner ◽  
Tamer Sanlidag
Keyword(s):  
Morphological Changes ◽  
Irradiation Effect ◽  
Treatment Protocols ◽  
Root Canals ◽  
Group 4 ◽  
Infected Root ◽  
Significant Difference ◽  
Group 3 ◽  
Group 5 ◽  
Group 2

Aim. To compare the disinfection effect of Er,Cr:YSGG laser using radial firing tips with NaOCI in root canals infected withC. albicansand to evaluate the irradiation effect on the dentinal surfaces.Material and Methods. In total seventy-six mandibular premolar teeth were used. In order to standardize the incubation and sterilization procedure, eight teeth were used. Sixty-eight of the root canals were incubated withC. albicanssuspension for 72 hours. The specimens were divided into 5 experimental groups. Two groups were constituted as Group 1 was irradiated with 1.5 W laser (n=8) and group 2, which was irradiated with 2 W laser (n=8). Two more groups were formed as Group 3 (2 W laser (n=25) and Group 4 NaOCI (5%) (n=25). Group 5 (n=2) did not receive any treatment. Mann-WhitneyUand Kruskal-WallisHtests were used to compare the different laser output powers. Wilcoxon Signed Ranks Test was used in order to compare theCandidacfu/ml levels according to treatment protocols (P<0.05).Results. Both 1.5 W and 2 W laser resulted in a major reduction ofC. albicanswithout a significant difference. The comparison of the dentin surfaces irradiated with Er,Cr:YSGG laser at two power settings resulted in similar morphological changes. However, NaOCI was found to be more effective in reduction ofC. albicansthan 2 W laser application.Conclusion. According to the results of the present study, the Er,Cr:YSGG laser with radial firing tips presented less antifungal effects onC. albicansin root canals of infected teeth than NaOCl solution.

scholarly journals A comparison of failure rates and canal preparation times between WaveOne Gold and One Curve file systems with and without glide path preparation in simulated canals

2021 ◽  
Vol 76 (5) ◽  
pp. 279-283
Author(s):  
Maheshan Pillay ◽  
Martin Vorster ◽  
Peet J van der Vyver
Keyword(s):  
Failure Rate ◽  
Fracture Resistance ◽  
File Systems ◽  
Failure Rates ◽  
Group 4 ◽  
Glide Path ◽  
Group 3 ◽  
Group 2 ◽  
The One ◽  
Group 1

The aim of this study was to compare the failure rate and canal preparation times of the Primary WaveOne Gold file (Dentsply Sirona, Ballaigues, Switzerland) with the One Curve file (Micro Méga, Besançon, France). The influence of glide path preparation on failure rate and final preparation times were also evaluated. Endo training blocks (Dentsply Sirona) with simulated canals were separated into four groups: Group 1: Primary WaveOne Gold with WaveOne Gold Glider; Group 2: Primary WaveOne Gold without glide path; Group 3: One Curve with One G; Group 4: One Curve without glide path. The number of training blocks that were shaped before instrument fracture occurred was recorded. Glide path and final preparation times were also recorded. Where no glide path was prepared, One Curve file prepared a significantly higher number of canals (14.33± 0.58) than the Primary WaveOne Gold (4.6 ± 1.34) before instrument fracture occurred (p<0.001). The One Curve with One G Glide Path file prepared significantly higher number of simulated canals (28±1.41) than the Primary WaveOne Gold with WaveOne Gold Glider (15 ± 1.41) before instrument fracture (p<0.001). Glide path preparation times with WaveOne Gold Glider (4.8s) were significantly faster compared to the One G Glide Path file (7.29s)(p<0 .001). Significantly faster final canal preparation times were achieved in groups where glide path were prepared (p<0.001). One Curve files exhibits a greater fracture resistance than Primary WaveOne Gold files. Glide path preparation increases the longevity of preparation files and results in faster final canal preparation.

scholarly journals Overlays or Ceramic Fragments for Tooth Restoration: An Analysis of Fracture Resistance

2014 ◽  
Vol 15 (1) ◽  
pp. 56-60
Author(s):  
Matheus Coelho Bandéca ◽  
Adriana Santos Malheiros ◽  
Rudys Rodolfo de Jesus Tavarez ◽  
Leily Macedo Firoozmand ◽  
Mônica Barros Silva
Keyword(s):  
Fracture Resistance ◽  
Testing Machine ◽  
Resin Cement ◽  
Posterior Teeth ◽  
Tooth Structure ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Ceramic Restorations ◽  
Group 1

ABSTRACT Purpose The aim of this study was to evaluate the mode of fracture and resistance of partial ceramic restorations of posterior teeth. Materials and methods Thirty healthy upper premolars were selected and divided into three groups (n = 10): Group 1— control, healthy unrestored teeth, group 2—teeth restored with ceramic fragments; and group 3—teeth restored with ceramic overlays. The restorations were manufactured with feldspathic ceramic and cemented with RelyX ARC resin cement. After being stored in distilled water for 7 days, the teeth were subjected to axial compression mechanical testing with a universal testing machine. Force was applied to the long axis of the tooth at a speed of 0.5 mm/min until fracture. The data were analyzed with one-way ANOVA and Tukey's test (5%). The mode of fracture was scored according to the degree of involvement of the tooth structure and the type of restoration. Results A significant difference (p < 0.05) was showed between groups 2 (1155 N) and 3 (846.6 N), but there was no significant difference between group 1 and the other groups (1046 N), More extensive fractures were prevalent in the healthy teeth group (Group 1), which had no occlusal coverage; less severe fractures were found in groups 2 and 3. Conclusion We conclude that teeth restored with ceramic fragments may offer greater resistance to fractures compared to teeth that have overlay restorations. How to cite this article de Jesus Tavarez RR, Firoozmand LM, Silva MB, Malheiros AS, Bandéca MC. Overlays or Ceramic Fragments for Tooth Restoration: An Analysis of Fracture Resistance. J Contemp Dent Pract 2014;15(1):56-60.

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