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Joshi S, Shah P, Gandhage D, Mopagar V, Malge RK, Pendyala G. Comparative Evaluation of Fracture Resistance of Carbon Fiber Posts and Glass Fiber Posts in Permanent Anterior Teeth: An In Vitro Study. Cureus 2024; 16:e60647. [PMID: 38903272 PMCID: PMC11187463 DOI: 10.7759/cureus.60647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2024] [Indexed: 06/22/2024] Open
Abstract
Introduction Dental caries and traumatic injuries often lead to tooth loss in adolescents and adults, necessitating endodontic treatment and subsequent restoration. Restoring such teeth presents a challenge due to varying degrees of substance loss. After endodontic treatment, the choice of an appropriate post is crucial for long-term stability. While metal posts are sturdy, they lack aesthetics and may cause root fractures. Fiber posts, such as carbon and glass fiber, offer improved aesthetics and mechanical properties, but their comparative performance warrants investigation. Materials and methods A total of 30 extracted anterior single-rooted teeth were divided into two groups to receive either carbon fiber or glass fiber posts. After endodontic treatment and post-space preparation, the posts were cemented using a dual polymerizing adhesive resin composite. Fracture resistance was assessed using a universal testing machine. Results The mean fracture resistance of the carbon fiber post group was recorded at 271.2 N, whereas the glass fiber post group exhibited a significantly higher mean fracture resistance of 416.133 N. This difference in fracture resistance between the two groups was found to be statistically significant (p < 0.05). Conclusion Glass fiber post systems demonstrated superior fracture resistance compared to carbon fiber post systems in anterior single-rooted teeth. These findings support the clinical preference for glass fiber posts in restoring endodontically treated anterior teeth, offering both mechanical reliability and aesthetic advantages. However, further research, including long-term clinical trials, is warranted to validate these findings and assess the overall clinical performance and longevity of fiber post systems in real-world settings.
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Affiliation(s)
- Saurabh Joshi
- Department of Pediatric Dentistry, Rural Dental College, Pravara Institute of Medical Sciences, Loni, IND
| | - Pratima Shah
- Department of Pediatric Dentistry, Rural Dental College, Pravara Institute of Medical Sciences, Loni, IND
| | - Dhananjay Gandhage
- Department of Prosthodontics, Crown and Bridge, and Implantology, Dr. D. Y. Patil Dental College & Hospital, Dr. D. Y. Patil Vidyapeeth, Pune, IND
| | - Viddyasagar Mopagar
- Department of Pedodontics and Preventive Dentistry, Rural Dental College, Pravara Institute of Medical Sciences, Loni, IND
| | - Rajesh Krishna Malge
- Department of Pedodontics and Preventive Dentistry, ESIC (Employee's State Insurance Corporation) Dental College, Kalaburagi, IND
| | - Gowri Pendyala
- Department of Periodontics, Rural Dental College, Pravara Institute of Medical Sciences, Loni, IND
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Karunakaran J, Thangaraj DN, Mathew S, Kumaravadivel K, Thangavel B. Effect of Various Surface Treatments on the Push-Out Bond Strength of Fiber Posts to Root Dentin. Cureus 2023; 15:e51323. [PMID: 38288172 PMCID: PMC10823890 DOI: 10.7759/cureus.51323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2023] [Indexed: 01/31/2024] Open
Abstract
Background This study aimed to evaluate the effect of various surface treatments on the push-out bond strength of fiber posts to root dentin. Methodology A total of 96 single-rooted premolars were decoronated and obturated and post spaces were prepared for 9 mm. The canals were irrigated with 17% ethylenediaminetetraacetic acid followed by distilled water. The samples were divided into the two following groups based on the type of fiber posts used: Group I - glass fiber post (Reforpost size 1) and Group II: quartz fiber post (Quartzix Added Posts number 1). Further, each group was divided into four subgroups based on the surface treatments (A: no treatment (control); B: silanization; C: 4% titanium tetrafluoride (four minutes) followed by silanization; D: sandblasting followed by silanization). After surface treatments, posts were cemented using self-adhesive resin cement (RelyX U200). Three 2 mm thick slices were obtained and push-out tests were done. Failure modes were analyzed under a stereomicroscope. The surface morphology of the posts was analyzed with a scanning electron microscope. Data were analyzed using a one-way analysis of variance. Results Treating the posts with airborne particle abrasion (sandblasting) followed by silanization showed the highest bond strength. The coronal level of the root showed the highest bond strength compared to the middle and apical levels. Adhesive failures between the resin cement and dentin were found to be the highest. Conclusions Sandblasting followed by silanization produced the highest bond strength. The coronal level of the root showed the highest bond strength. Adhesive failures were the highest followed by mixed failures.
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Affiliation(s)
- Janani Karunakaran
- Conservative Dentistry and Endodontics, Chettinad Dental College and Research Institute, Chennai, IND
| | - Deepa N Thangaraj
- Conservative Dentistry and Endodontics, KSR Institute of Dental Science and Research, Tiruchengode, IND
| | - Sebeena Mathew
- Conservative Dentistry and Endodontics, KSR Institute of Dental Science and Research, Tiruchengode, IND
| | - Karthick Kumaravadivel
- Conservative Dentistry and Endodontics, KSR Institute of Dental Science and Research, Tiruchengode, IND
| | - Boopathi Thangavel
- Conservative Dentistry and Endodontics, KSR Institute of Dental Science and Research, Tiruchengode, IND
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Deng Z, Huang Z, Ping L, Hu W, Yie KHR, Liu C, Zhang H, Liu J. The combined treatment of fiber post and root canal by the Er:YAG laser enhances the bond strength of composite reconstruction. Lasers Med Sci 2023; 38:146. [PMID: 37353598 DOI: 10.1007/s10103-023-03800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 06/02/2023] [Indexed: 06/25/2023]
Abstract
Fiber post bonding failure remains an issue during crown restoration procedures. This experiment examines the bonding effect of combined Er:YAG laser treatment on both root canal and fiber post. Sixty extracted mandibular first premolars were randomly selected and divided into 6 groups (n = 10 per group): G1 (control group): root canal with 2.5% NaClO treatment, no treatment of fiber post; G2: root canal with 2.5% NaClO treatment and fiber post with airborne-particle abrasion; G3: root canal with Er:YAG laser treatment and fiber post with airborne-particle abrasion; G4: root canal with Er:YAG laser treatment, no treatment of fiber post; G5: root canal with 2.5% NaClO treatment, fiber post with Er:YAG laser irradiation; G6: combined Er:YAG laser irradiation of both root canal and fiber post. An Er:YAG laser with a wavelength of 2940 nm was used to treat the fiber post (4.5 W, 450 mJ, 10 Hz for 60 s at 100-μs pulse duration with 100% water cooling) and the root canal (1.5 W, 150 mJ, 10 Hz for 60 s at 100-μs pulse duration with 100% water cooling). When the root canal was treated with the laser, the fiber tip was inserted into the root canal to make a spiral reciprocating motion. Bond strength was analyzed by a micro push-out test. Data were analyzed using both the Tukey test and two-way ANOVA (α = 0.05). Failure modes were observed and counted through a stereo microscope. The root canal and fiber post surface analysis was performed using SEM. The bond strength of G3 and G6 were significantly enhanced compared to those of the other groups (p < 0.05). The SEM analysis showed that the smear layers of groups with root canals subjected to Er:YAG laser irradiation were significantly reduced compared to those of the control group (G1). In groups with fiber posts treated with Er:YAG laser irradiation, the surfaces of the fiber posts exhibited greater surface roughness and a certain degree of epoxy matrix removal. Through the combined Er:YAG laser irradiation of both root canal and fiber post, the bond strength between them was significantly enhanced, which was superior to the individual treatment of either fiber posts or root canal.
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Affiliation(s)
- Zhennan Deng
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China
| | - Zhuo Huang
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China
| | - Linchao Ping
- Department of Stomatology, Jiaxing Hospital of T.C.M, Jiaxing, 314000, China
| | - Wenjia Hu
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China
| | - Kendrick Hii Ru Yie
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China
| | - Chongxing Liu
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China
| | - Hualin Zhang
- College of Stomatology, Ningxia Medical University, 804#, Shengli South Street, Xingqing District, Yinchuan City, 750004, Ningxia Province, China.
- General Hospital of Ningxia Medical University, Yinchuan, 750004, China.
| | - Jinsong Liu
- School and Hospital of Stomatology, Wenzhou Medical University, 268#, Xueyuan West Road, Lucheng District, , Wenzhou City, 325027, Zhejiang Province, China.
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Alshabib A, Abid Althaqafi K, AlMoharib HS, Mirah M, AlFawaz YF, Algamaiah H. Dental Fiber-Post Systems: An In-Depth Review of Their Evolution, Current Practice and Future Directions. Bioengineering (Basel) 2023; 10:bioengineering10050551. [PMID: 37237621 DOI: 10.3390/bioengineering10050551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
The field of dental medicine is constantly evolving and advancing toward minimally invasive techniques. Several studies have demonstrated that bonding to the tooth structure, particularly enamel, yields the most predictable results. In some instances, however, significant tooth loss, pulpal necrosis, or irreversible pulpitis may limit the options available to the restorative dentist. In these cases, placement of a post and core followed by a crown is the preferred treatment option, provided all requirements are met. This literature review provides an overview of the historical development of dental FRC post systems as well as a comprehensive examination of the currently available posts and their bonding requirements. In addition, it offers valuable insights for dental professionals seeking to understand the current state of the field and the prospects of dental FRC post systems.
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Affiliation(s)
- Abdulrahman Alshabib
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Khaled Abid Althaqafi
- Department of Restorative Dental Department, College of Dentistry, University of Umm Al Qura, Makkah 24211, Saudi Arabia
| | - Hani S AlMoharib
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Mahir Mirah
- Department of Restorative Dental Science, Dental College, and Hospital, Taibah University, Madinah 42353, Saudi Arabia
| | - Yasser F AlFawaz
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Hamad Algamaiah
- Department of Restorative Dental Science, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
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Oishi S, Komada W, Tsukahara R, Yoshimatsu S, Kondo D, Omori S, Nozaki K, Miura H, Fueki K. A composite resin core with a new zirconia tube reduces the surface strain at the cervical area of a mandibular molar: A model tooth study. J Prosthodont Res 2023; 67:70-76. [PMID: 35249930 DOI: 10.2186/jpr.jpr_d_21_00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
PURPOSE This study aimed to evaluate the surface strain at the cervical area of endodontically treated molars with a large pulp chamber restored using a composite resin core with three different types of core build-up systems. METHODS Reproduction models of human mandibular molars with prepared post spaces were used in this study. Roots duplicated with a composite resin were used as the experimental teeth. Three types of core build-up systems were used: composite resin core(RC), composite resin core with fiber posts (FC), and composite resin core with a prefabricated zirconia tube (ZC). Each group comprised eight specimens. Crowns made of yttria partially stabilized zirconia were cemented with dual-cure resin cement. Four strain gauges were attached to the surfaces of each specimen: the cervical area of the root and crown, on the buccal and lingual sides. The surface strain at each cervical area was measured using a static loading test and statistically analyzed. RESULTS In the case of static loading to the buccal cusp inner slope, ZC showed a significantly lower strain than RC in the crown on the buccal side and in the root and FC in the root. In the central fossa, ZC showed a significantly lower strain than FC in the root on the lingual side. CONCLUSIONS The prefabricated zirconia tube reduced the surface strain at the cervical area of the buccal/lingual root in molars; however, the effect was small in the cervical area of the crown.
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Affiliation(s)
- Shinya Oishi
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Wataru Komada
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ruri Tsukahara
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shu Yoshimatsu
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Daiki Kondo
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Satoshi Omori
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kosuke Nozaki
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hiroyuki Miura
- Department of Fixed Prosthodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kenji Fueki
- Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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Hesham M, Hashem A, Hamza F. Effect of Different Surface Treatments of Glass Fiber Posts on their Surface Roughness and Flexure Properties. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.6843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
AIM: This study aimed to assess the effect of different surface treatments on the surface roughness and flexure properties of glass fiber posts “GFPs.”
MATERIALS AND METHODS: A total of 40 GFPs were divided into four groups (n = 10): GC – no surface treatment (control), GSB – sandblasted, GHF – hydrofluoric acid etched, and GL – Er: YAG laser irradiated. Surface roughness was detected using surface profilometer and the 3-points bending flexural test measured flexural strength and elastic modulus.
RESULTS: GSB showed the highest mean roughness followed by GHF, then GL, while GC had lowest roughness mean value. The 3 points bending test results were calculated and recorded, GSB exhibited the highest flexure stress (MPa) compared to GHF and GL. Modulus of elasticity (GPa) showed significant differences between the tested groups, GSB showed the highest modulus of elasticity compared to GHF and GL, while GC showed insignificant differences with all tested groups.
CONCLUSION: Different surface treatments postulated in this study showed alternations of GFPs surfaces without jeopardizing the mechanical properties of GFPs.
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Effect of Glass Fiber Post Surface Treatment on Bond Strength of a Self-Adhesive Resin Cement: An "In Vitro" Study. Int J Dent 2021; 2021:8856657. [PMID: 34475956 PMCID: PMC8407984 DOI: 10.1155/2021/8856657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 08/11/2021] [Indexed: 11/18/2022] Open
Abstract
Objective This study evaluated the influence of different mechanical and chemical surface treatments alone and combined with silane on the bond strength (BS) of glass fiber posts (GFPs) using self-adhesive resin cement. Methods Eighty-four single-rooted bovine teeth (six groups, n = 14) were submitted to BS analysis after GFP cementation. The treatments applied in the studied groups were no surface treatment (control), silane (S), 24% hydrogen peroxide (PER), 24% hydrogen peroxide and silane (PER + SIL), blasting with 50 μm aluminum oxide particles (BLAST), and blasting with 50 μm aluminum oxide particles and silane (BLAST + SIL). Results BS differed significantly among groups (p < 0.001). It was higher in the SIL (10.5 ± 3.5 MPa), BLAST + SIL (11.5 ± 3.2 MPa), and PER + SIL (11.6 ± 4.6 MPa) groups than in the control (6.5 ± 2.9 MPa), BLAST (8.6 ± 4.0 MPa), and PER (7.1 ± 2.8 MPa) groups, with no significant difference among groups receiving silanization. Cement post adhesive failure was more common in the SIL, BLAST, and PER + SIL groups, and cement-dentin adhesive failure was more common in the control, BLAST + SIL, and PER groups. Conclusion These results show that silane application alone increases BS.
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Alshahrani A, Albaqami M, Naji Z, Al-Khunein Y, Alsubaie K, Alqahtani A, Al-Thobity AM. Impact of different surface treatment methods on bond strength between fiber post and composite core material. Saudi Dent J 2021; 33:334-341. [PMID: 34434036 PMCID: PMC8376674 DOI: 10.1016/j.sdentj.2020.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/11/2020] [Accepted: 03/11/2020] [Indexed: 12/03/2022] Open
Abstract
PURPOSE To assess the impact of different surface treatments on the push-out bond strength between fiber post and a composite resin core material. MATERIAL AND METHODS Seventy-two glass-fiber posts were randomly assigned into six groups according to the method of surface treatment: Control (no treatment), silane, sandblasting, hydrofluoric acid, hydrogen peroxide, and hydrogen peroxide with sandblasting. Two posts from each group were inspected under a scanning electron microscope to assess the surface modifications and 10 posts were employed for the push-out test. Each post was placed vertically in the middle of a cylindrical putty matrix and a dual-cure composite resin material was applied for core build-up. Two discs of each specimen were cut using a low-speed diamond saw (total 120 discs). The push-out test was executed using a universal testing machine at a crosshead speed of 0.5 mm/min. Statistical analysis was performed using one-way ANOVA and Tukey's test (p ≤ 0.05). The mode of failure of each disc was evaluated under SEM. RESULTS The sandblasting and hydrofluoric acid groups presented significantly higher bond strength than control and hydrogen peroxide groups. The hydrogen peroxide groups exhibited significantly the lowest bond strength of all groups. There was no significant difference between the control and silane groups. All groups showed predominantly adhesive failure except the hydrogen peroxide with sandblasting, where the cohesive failure of the post was predominant. CONCLUSIONS Sandblasting and hydrofluoric acid surface treatments demonstrated superior results to silane and hydrogen peroxide. The combined method of hydrogen peroxide and sandblasting could weaken the fiber post and lead to clinical fractures.
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Affiliation(s)
- Abdullah Alshahrani
- Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Muthyib Albaqami
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Zeyad Naji
- College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | | | - Khalid Alsubaie
- King Abdulaziz Dental Center, National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Abdulaziz Alqahtani
- Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad M. Al-Thobity
- Substitutive Dental Sciences Department, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Imai D, Mine A, Ezaki R, Nakatani H, Matsumoto M, Hagino R, Yumitate M, Yamanaka A, Ban S, Miura J, Van Meerbeek B, Higashi M, Yatani H. Does the bonding effectiveness of a fiber post/resin composite benefit from mechanical or chemical treatment? Seven methods for saliva-contaminated surfaces. J Prosthodont Res 2021; 66:288-295. [PMID: 34349083 DOI: 10.2186/jpr.jpr_d_21_00015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE This study examined four cleaning methods and three chemical treatments for artificial saliva-contaminated fiber posts in terms of bonding durability to resin composite core materials. METHODS Non-contaminated fiber posts (Tokuyama FR Post, Tokuyama Dental) and those contaminated (GC Fiber Post, GC) with artificial saliva (Saliveht Aerosol, Teijin Pharma) were used. Washing and drying (WD), alcohol cleaning (AlC), H3PO4 etching (P/WD), alumina blasting (B/D) for decontamination and silanization (Clearfil Ceramic Primer Plus, Kuraray Noritake Dental, Si), resin priming (HC Primer, Shofu, MMA), and bonding resin application (Clearfil Universal Bond Quick, Kuraray Noritake Dental, BR) for chemical treatment were performed. The treated fiber post was planted inside a cylindrical tube and filled with resin composite (DC Core Automix ONE, Kuraray Noritake Dental). The specimen was sectioned, and a push-out test was performed after 24 h, 1 month, and 3 months. The fracture surface was observed using a scanning electron microscope (SEM). RESULTS Adhesion between the non-contaminated fiber post and resin composite did not improve by silanization and decreased by alumina blasting. SEM observations revealed a fractured glass fiber by alumina blasting. Saliva contamination decreased the bond strength between the fiber post and resin composite; however, recovery was achieved by WD, Alc, P/WD, and B/D. Compared to Si, BR (P = 0.009) was effective in restraining the long-term durability of bonding, whereas MMA (P = 0.99) was not. CONCLUSIONS The application of bonding resin after alcohol cleaning is the most convenient and effective clinical procedure for fiber post surface treatment.
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Affiliation(s)
- Dai Imai
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Ryoma Ezaki
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Hayaki Nakatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine, Hokkaido.,BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven), Leuven
| | - Ryosuke Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Azusa Yamanaka
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Jiro Miura
- Division for Interdisciplinary Dentistry, Osaka University Dental Hospital, Osaka
| | - Bart Van Meerbeek
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven), Leuven
| | - Mami Higashi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
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Kırmalı Ö, Sekmen T, Karaarslan A. Push-out bond strength of various surface treatments on fiber post to root canal dentine using different irrigation techniques. Microsc Res Tech 2021; 84:2024-2033. [PMID: 33749061 DOI: 10.1002/jemt.23758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/13/2021] [Accepted: 03/09/2021] [Indexed: 11/11/2022]
Abstract
To compare the efficacy of different surface treatments (fiber post) with laser activated irrigation (LAI) technique (various root canal solutions) on root canal dentine in terms of push-out bond strength (PBS) in a fiber post. In this study, 200 premolars were assigned into groups according to various irrigation techniques: 2.5% sodium hypochlorite (NaOCl), 17% ethylene diamine tetra acetic acid (EDTA), and 17% EDTA + LAI. In addition, the fiber posts were separated into five groups, (n = 30) according to the surface pretreatment performed: sandblasting, hydrofluoric acid (HF), Erbium, Chromium:Yttrium Scandium-Gallium-Garnet (Er,Cr:YSGG) laser, Neodymium-Doped Yttrium Aluminum Garnet (Nd,YAG) laser and as untreated surface. The posts were cemented using dual-cure resin cement and subjected to a PBS test. Data were analyzed by one way-ANOVA, Tukey, and Tamhane T2 tests. The PBS values were increased in all parts of the tooth in the EDTA and EDTA + LAI treated groups and in groups treated with Er,Cr:YSGG laser fiber posts. In groups in which EDTA and EDTA + LAI were applied, it was observed that dentinal tubules were open according to the distribution and number of dentinal tubule configurations. The improvement of the PBS between fiber post/resin cement/root dentine was observed via the use of fiber post surface treatments with different irrigation techniques.
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Affiliation(s)
- Ömer Kırmalı
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | | | - Ayşegül Karaarslan
- Department of Restorative Dentistry, Faculty of Dentistry, Erzincan Binali Yıldırım University, Erzincan, Turkey
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11
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Davoudi A, Shadmehr E, Savoj M, Akhavan-Khaleghi M, Tabesh M, Zakizade M, Ebadian B. Laser Treatment of Fiber Post and Final Push-Out Bond Strength: A Systematic Review and Meta-Analysis. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2020; 39:321-333. [PMID: 33275497 DOI: 10.1089/photob.2020.4809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Purpose: This review article tries to answer this question: "What are the effects of laser surface treatment of fiber posts (FPs), compared with other surface roughening methods, on bond strength of cemented FPs?" Methods: Search was carried out in six electronic databases by focusing on defined key words. Related titles and abstracts, up to March 2019, were collected, read, and selected for quality assessments. A total of 2408 articles were included in the study at the initial stage of the searching phase. Results: Finally, seven studies were recognized to be reliable to be reviewed and meta data analysis in the study. All the studies were in vitro with a total of 340 samples. None of the Er:YAG (-0.27, 95% CI: -2.29 to 1.76; p = 0.79) and Er,Cr:YSGG (-0.04, 95% CI: -1.43 to 1.35; p = 0.95) treated samples showed any significant overall mean differences in final push-out bond strength (PBS) compared with the control groups. Conclusions: Laser pretreatment of FP surfaces might not be effective in providing high PBS. FP surface are susceptible to damage of high-level laser irradiation and might show decreased bond strength.
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Affiliation(s)
- Amin Davoudi
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elham Shadmehr
- Department of Endodontics, School of Dentistry, UCSF Preventive & Restorative Dental Science, San Francisco, California, USA
| | - Melika Savoj
- Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrdad Akhavan-Khaleghi
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahtab Tabesh
- Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrnaz Zakizade
- Department of Orthodontics, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behnaz Ebadian
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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12
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Kırmalı Ö, Akçakuş Battal T, Turker N, Dündar A. Mechanical properties of glass-fibre-reinforced composite posts after laser irradiation with different energy densities. AUST ENDOD J 2020; 47:34-42. [PMID: 33002287 DOI: 10.1111/aej.12443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/03/2020] [Accepted: 09/02/2020] [Indexed: 11/26/2022]
Abstract
The aim of the present study was to evaluate the effect of the surface treatments on flexural strengths and flexural modulus of glass-fibre-reinforced composite (GFRC) posts. Sixty-three posts were randomly divided into 9 groups (n = 7), and various surface treatments were performed. The control group was left untreated. Other groups were treated with 9% hydrofluoric acid, sandblasting with 120 µm Al2 O3 particles and Er,Cr:YSGG laser irradiation with different powers (1 W, 2 W, 3 W, 4 W, 5 W and 6 W). The samples were subjected to 3-point bending test, and data were calculated. Statistical analysis was performed. The flexural strengths of fibre posts treated with sandblasting, hydrofluoric acid, 1 W and 2 W laser were statistically similar with control group (P > 0.01). However, the flexural strength of fibre posts treated with 3 W, 4 W, 5 W and 6 W laser was statistically lower than control group (P < 0.01). High laser irradiations cause melting on the post surface and breaks in fibrils.
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Affiliation(s)
- Ömer Kırmalı
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Tuba Akçakuş Battal
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Nurullah Turker
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Ayşe Dündar
- Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
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13
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Elsubeihi ES, Aljafarawi T, Elsubeihi HE. State of the Art Contemporary Prefabricated Fiber-Reinforced Posts. Open Dent J 2020. [DOI: 10.2174/1874210602014010313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background:
There is an increased interest in investigating and use of prefabricated fiber-reinforced posts by scientists and clinicians in the restoration of endodontically treated teeth.
Objective:
The objective of this narrative review was to summarize the composition of contemporary prefabricated fiber-reinforced posts and elucidate its effect on the different properties of these posts.
Methods:
PubMed/Medline, Scopus, and Google Scholar were searched from January 1990 to December 2019 for English Language articles describing the composition and properties of prefabricated fiber-reinforced posts. First, the search strategy was established for Medline / PubMed using the following terms ((Fiber post[All Fields] OR (fiber reinforced post[All Fields] AND composition[All Fields] AND (“matrix”[MeSH Terms] OR (“fiber”[All Fields] AND “properties”[All Fields] AND “epoxy”[All Fields]) OR “dimethacrylate”[All Fields]) AND NOT (CAD CAM[All Fields])). The search strategy was then adapted for Scopus and Google Scholar databases to identify eligible studies.
Results:
The current state of the art of prefabricated fiber-reinforced posts revealed a myriad of products with different formulations which are reflected on the mechanical and handling characteristics of the different posts available in the market. More recent research and development efforts attempted to address issues related to the improved transmission of polymerization light through the post to the most apical end of the restoration inside the root canal. Others focused on the development of new matrix materials for fiber-reinforced posts.
Conclusion:
A review of the literature revealed that currently available prefabricated fiber-reinforced posts consist of a heterogeneous group of materials which can have a significant effect on the behavior of posts. Understanding different formulations will help clinicians in scrutinizing the vast literature available on prefabricated fiber-reinforced posts. This, in turn, will help them make an informed decision when selecting materials for the restoration of endodontically treated teeth.
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14
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Effects of Surface Treatments of Glass Fiber-Reinforced Post on Bond Strength to Root Dentine: A Systematic Review. MATERIALS 2020; 13:ma13081967. [PMID: 32340106 PMCID: PMC7215824 DOI: 10.3390/ma13081967] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 11/30/2022]
Abstract
The objective of this systematic review was to determine the influence of surface treatment of glass fiber posts on bond strength to dentine. Laboratory studies were searched in MEDLINE, PubMed, Embase, PubMed Central, Scopus, and Web of Science search engine. All authors interdependently screened all identified articles for eligibility. The included studies were assessed for bias. Because of the considerable heterogeneity of the studies, a meta-analysis was not possible. Twelve articles were found eligible and included in the review. An assessment of the risk of bias in the included studies provided a result that classified the studies as low, medium, and high risk of bias. The available evidence indicated that the coronal region of the root canal bonded better to the glass fiber post than apical regions. Phosphoric acid, hydrogen peroxide, and silane application enhance post’s retentiveness. In light of the current evidence, surface treatment strategies increase the bond strength of glass fiber post to dentine. However, recommendations for standardized testing methods and reporting of future clinical studies are required to maintain clinically relevant information and to understand the effects of various surface treatment of glass fiber post and their bond strength with dentine walls of the root canal.
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15
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Davoudi A, Mosharraf R, Akhavan A, Zarei F, Pourarz S, Iravani S. Effect of laser irradiation on push-out bond strength of dental fiber posts to composite resin core buildups: A systematic review and meta-analysis. Photodiagnosis Photodyn Ther 2019; 27:184-192. [PMID: 31163283 DOI: 10.1016/j.pdpdt.2019.05.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/29/2019] [Accepted: 05/31/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The bonding of fiber posts (FPs) to composite resin core buildups is a challenge due to limited penetration of resin to the polymeric matrix of FPs. This review article tries to answer this question: "What are the effects of laser surface treatment of FPs, compared to other surface roughening methods, on push-out bond strength (PBS) of FPs bonded to composite resin core buildups?" METHODS Searches were run in seven electronic databases with a focus on proper key words. Related titles and abstracts, up to February 2019, were screened, selected, read and subjected to quality assessments. RESULTS After the initial search, a total of 2635 articles were included in the study. Finally, 6 studies were reliable enough in methodology to be included. All the studies were in vitro with a total of 359 samples. Er:YAG (-0.05, 95% CI: -2.96 to 2.86; P = 0.97) and Er,Cr:YSGG (0.84, 95% CI: -0.12 to 1.81; P = 0.08) treated samples showed no significant overall mean differences in final PBS compared to the control groups. Moreover, pretreatment with Er,Cr:YSGG laser and sandblasting with 50 μm alumina showed an overall mean difference of -0.42 for PBS (95% CI: -1.23 to 0.39) with no significant differences. CONCLUSIONS Laser irradiation of FPs seems to provide no significant increase in PBS values of FPs bonded to composite resin core buildups. Effects of surface treatment of FPs with laser irradiation and sandblasting with 50 μm alumina might be similar in increasing the final PBS, either.
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Affiliation(s)
- Amin Davoudi
- Department of Prosthodontics, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ramin Mosharraf
- Dental Materials Research Center, Department of Prosthodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Ali Akhavan
- Dental Materials Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fardin Zarei
- Department of Periodontics, Dental School, Gilan University of Medical Sciences, Gilan, Iran
| | - Sobhan Pourarz
- Department of Oral and Maxillofacial Surgery, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shiva Iravani
- Department of Endodontics, School of Dentistry, Shahrekord University of Medical Sciences, Shahrekord, Iran
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16
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Maroulakos G, Wanserski MW, Wanserski MM, Schuler EJ, Egan CP, Thompson GA. Effect of airborne-particle abrasion on 3-dimensional surface roughness and characteristic failure load of fiber-reinforced posts. J Prosthet Dent 2019; 121:461-469. [DOI: 10.1016/j.prosdent.2018.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 07/24/2018] [Accepted: 07/24/2018] [Indexed: 10/27/2022]
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17
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Carvajal Trujillo EA. Irrigación del conducto radicular y tratamiento de superficie de pernos de fibra, previo a la cementación: revisión de tema. ACTA ODONTOLÓGICA COLOMBIANA 2019. [DOI: 10.15446/aoc.v9n1.76673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción: el tratamiento endodóntico es muy solicitado para preservar las piezas dentales, así como la utilización de pernos de fibra cuando el remanente coronario no es el adecuado para recibir una prótesis coronaria, permitiendo de esta manera reconstruir el muñón dental para la posterior colocación de la restauración definitiva. Objetivo: identificar tanto el tratamiento de superficie de pernos de fibra como el irrigante radicular idóneos para conseguir una cementación adecuada; así como conocer cuál es el tratamiento de superficie que produce menos desintegración de las fibras del perno de fibra. Materiales y métodos: se incluyeron 47 artículos publicados en inglés, durante los últimos 20 años, teniendo en cuenta que los mismos se obtuvieron hasta octubre del 2018. Conclusiones: previa la cementación de pernos sean estos de fibra o de cuarzo es indispensable realizar tratamiento de superficie para así mejorar la adhesión, estos pueden ser químicos o físicos, los que ofrecen mejor resultado sin alterar de manera significativa la estructura del mismo es el enarenado con partículas de diamante sintéticas de 1-3 µm seguido de silanización y dentro de los químicos H2O2 al 10% por 1 min seguido de silano. Para obtener mejores resultados se debe accionar el silano a una temperatura de 80°C. En cuanto a protocolos de irrigación depende del sistema de cementación que se vaya a emplear EDTA 18% + Hipoclorito de sodio al 5,25% o EDTA 18% + clorhexidina al 2% cuando se va emplear un cemento autoadhesivoy NaOCl al 11% cuando se utilice el acondicionamiento ácido de lavado y secado.
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18
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Posritong S, Hong JM, Eleniste PP, McIntyre PW, Wu JL, Himes ER, Patel V, Kacena MA, Bruzzaniti A. Pyk2 deficiency potentiates osteoblast differentiation and mineralizing activity in response to estrogen or raloxifene. Mol Cell Endocrinol 2018; 474:35-47. [PMID: 29428397 PMCID: PMC6057828 DOI: 10.1016/j.mce.2018.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 02/07/2023]
Abstract
Bone remodeling is controlled by the actions of bone-degrading osteoclasts and bone-forming osteoblasts (OBs). Aging and loss of estrogen after menopause affects bone mass and quality. Estrogen therapy, including selective estrogen receptor modulators (SERMs), can prevent bone loss and increase bone mineral density in post-menopausal women. Although investigations of the effects of estrogen on osteoclast activity are well advanced, the mechanism of action of estrogen on OBs is still unclear. The proline-rich tyrosine kinase 2 (Pyk2) is important for bone formation and female mice lacking Pyk2 (Pyk2-KO) exhibit elevated bone mass, increased bone formation rate and reduced osteoclast activity. Therefore, in the current study, we examined the role of estrogen signaling on the mechanism of action of Pyk2 in OBs. As expected, Pyk2-KO OBs showed significantly higher proliferation, matrix formation, and mineralization than WT OBs. In addition we found that Pyk2-KO OBs cultured in the presence of either 17β-estradiol (E2) or raloxifene, a SERM used for the treatment of post-menopausal osteoporosis, showed a further robust increase in alkaline phosphatase (ALP) activity and mineralization. We examined the possible mechanism of action and found that Pyk2 deletion promotes the proteasome-mediated degradation of estrogen receptor α (ERα), but not estrogen receptor β (ERβ). As a consequence, E2 signaling via ERβ was enhanced in Pyk2-KO OBs. In addition, we found that Pyk2 deletion and E2 stimulation had an additive effect on ERK phosphorylation, which is known to stimulate cell differentiation and survival. Our findings suggest that in the absence of Pyk2, estrogen exerts an osteogenic effect on OBs through altered ERα and ERβ signaling. Thus, targeting Pyk2, in combination with estrogen or raloxifene, may be a novel strategy for the prevention and/or treatment of bone loss diseases.
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Affiliation(s)
- Sumana Posritong
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Jung Min Hong
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Pierre P Eleniste
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Patrick W McIntyre
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Jennifer L Wu
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Evan R Himes
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
| | - Vruti Patel
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
| | - Melissa A Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
| | - Angela Bruzzaniti
- Department of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, IN, 46202, USA.
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19
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Al-Qahtani AS, AlZain SA, AlHamdan EM, Tulbah HI, Al Alsheikh HM, Naseem M, Vohra F. A comparative evaluation of the effect of phototherapy of fiber post on its bond strength to dental composite. Photodiagnosis Photodyn Ther 2018; 24:228-231. [PMID: 30172074 DOI: 10.1016/j.pdpdt.2018.08.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 08/20/2018] [Accepted: 08/27/2018] [Indexed: 10/28/2022]
Abstract
The aim of the study was to evaluate the effect of diode laser as a phototherapy on surface treatment of fiber post and its bond strength to resin core build-up material. In this in-vitro study fifty fiber post of 1 mm tip-diameter and 20 mm length were used. The posts were mounted and randomly divided into 5 groups (n = 10) according to different surface treatment methods i.e. Group 1: Control, Group 2: Application of 37% Phosphoric Acid, Group 3: Treated with 40% H2O2, Group 4: Sandblasted with 50 μm aluminium oxide particles and Group 5: treated with diode laser. In all specimens including control, a cylinder of resin composite around the fiber post was made. All Specimens were mounted in a universal testing machine. Push-out test was performed and bond strengths were calculated. Using analysis of variance (ANOVA) and post hoc Tukey multiple comparisons test, means of push out bond strength were compared among the study groups. The highest bond strength was shown among Sandblasted [50 μm, Aluminium Oxide (Al2O3)] group [139.86] and the lowest push-out bond strength was observed in Control specimens [75.73]. The bond strength values of fiber post treated with Diode laser [100.81] and 40% H2O2 [105.64] were comparable.
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Affiliation(s)
- Amal Saeed Al-Qahtani
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
| | - Sahar Asaad AlZain
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
| | - Eman Mohammed AlHamdan
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
| | - Huda Ismail Tulbah
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
| | - Hana Mohammed Al Alsheikh
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
| | | | - Fahim Vohra
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O.Box- 60169, Riyadh 11545, Saudi Arabia.
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20
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Song CH, Choi JW, Jeon YC, Jeong CM, Lee SH, Kang ES, Yun MJ, Huh JB. Comparison of the Microtensile Bond Strength of a Polyetherketoneketone (PEKK) Tooth Post Cemented with Various Surface Treatments and Various Resin Cements. MATERIALS 2018; 11:ma11060916. [PMID: 29844270 PMCID: PMC6025344 DOI: 10.3390/ma11060916] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 11/16/2022]
Abstract
The aim of this in-vitro research was to evaluate the microtensile bond strength in the newly introduced PEKK tooth post with various surface treatments and resin cements. A fiberglass tooth post was included in order to compare it with PEKK as a possible post material. The microtensile bond strengths of the fiberglass post (FRC Postec Plus) and the PEKK post (Pekkton®) were tested using three kinds of self-adhesive resin cements (G-CEM LinkAce, Multilink Speed, and RelyX U200) and one self-etching resin cement (PANAVIA F2.0). The surface treatments of the fiberglass posts were processed according to the manufacturer’s recommendations (F1, application of 37% phosphoric acid etching gel and silanization). For the PEKK post groups, various surface treatments were performed like no surface treatment (P1), sandblasting (P2), silica-coating and silanization (P3), and sandblasting with a composite primer (P4). In the surface treatment, PEKK posts with silica coating and silane treatment (P3) showed a significantly higher microtensile bond strength (mean MPa: 18.09, p < 0.05). The highest microtensile bond strength was shown when the PEKK posts were treated with a silica coating and silane treatment and cemented with RelyX U200 (mean MPa: 22.22). The PEKK posts with surface treatments of silica-coating and silanization or sandblasting displayed superior microtensile bond strengths (mean MPa: 18.09 and 16.25, respectively) compared to the conventional fiberglass posts (mean MPa: 14.93, p < 0.05).
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Affiliation(s)
- Chan-Hong Song
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - Jae-Won Choi
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - Young-Chan Jeon
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - Chang-Mo Jeong
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - So-Hyoun Lee
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - Eun-Sook Kang
- Department of Prosthodontics, In-Je University Haeundae Paik Hospital, Busan 48108, Korea.
| | - Mi-Jung Yun
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
| | - Jung-Bo Huh
- Department of Prosthodontics, Dental Research Institute, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan 50612, Korea.
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21
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Mechanical properties and superficial characterization of a milled CAD-CAM glass fiber post. J Mech Behav Biomed Mater 2018; 82:187-192. [PMID: 29609139 DOI: 10.1016/j.jmbbm.2018.03.035] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 03/26/2018] [Indexed: 11/23/2022]
Abstract
Computer-aided design and computer-aided manufacturing (CAD-CAM) technology may be used to produce custom intraradicular posts, but studies are lacking. The purpose of this in vitro study was to evaluate the flexural properties (strength and modulus), failure mode, superficial morphology, and roughness of two CAD-CAM glass fiber posts (milled at different angulations) compared with a commercially available prefabricated glass fiber post. Three groups were tested (n = 10): PF (control group)- prefabricated glass fiber post; C-Cd-diagonally milled post; and C-Cv-vertically milled post. A 3-dimensional virtual image was obtained from a prefabricated post, which guided the posterior milling of posts from a glass fiber disk (Trilor Blanks; Bioloren). Surface roughness and morphology were evaluated using confocal laser microscopy. Flexural strength and modulus were evaluated with the 3-point bend test. Data were submitted to one-way analysis of variance followed by the Student-Newman-Keuls post hoc test (α = 0.05). The fractured surfaces were evaluated with scanning electron microscopy. The superficial roughness was highest for PF and similar for the experimental groups. Morphological analysis shows different sizes and directions of the glass fibers along the post. The flexural strength was highest for PF (900.1 ± 30.4 > C-Cd - 357.2 ± 30.7 > C-Cv 101.8 ± 4.3 MPa) as was the flexural modulus (PF 19.3 ± 2.0 GPa > C-Cv 10.1 ± 1.9 GPa > C-Cd 7.8 ± 1.3 GPa). A CAD-CAM milled post seems a promising development, but processing requires optimizing, as the prefabricated post still shows better mechanical properties and superficial characteristics.
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22
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Oliveira LV, Maia TS, Zancopé K, Menezes MDS, Soares CJ, Moura CCG. Can intra-radicular cleaning protocols increase the retention of fiberglass posts? A systematic review. Braz Oral Res 2018; 32:e16. [PMID: 29561949 DOI: 10.1590/1807-3107bor-2018.vol32.0016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/30/2018] [Indexed: 11/22/2022] Open
Abstract
The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts (FGPs). Currently, there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation. This systematic review involved "in vitro" studies to investigate if cleaning methods of the root canal after post-space preparation can increase the retention of FGPs evaluated by the push-out test. Searches were carried out in PubMed (MEDLINE) and Scopus databases up to July2017. English language studies published from 2007 to July 2017 were selected. 475 studies were found, and 9 were included in this review. Information from the 9 studies were collected regarding the number of samples, storage method after extraction, root canal preparation, method of post-space preparation, endodontic sealer, resin cement, cleaning methods after post-space and presence of irrigant activation. Five studies presented the best results for the association of sodium hypochlorite (NaOCl) and ethylenediamine tetra-acetic acid (EDTA), while in the other 4 studies, the solutions that showed improved retention of FGPs were photon-induced photoacoustic streaming (PIPS), Qmix, Sikko and EDTA. The results showed heterogeneity in all comparisons due to a high variety of information about cleaning methods, different concentrations, application time, type of adhesive system and resin cements used. In conclusion, this review suggests that the use of NaOCl/EDTA results in the retention of FGPs and may thus be recommended as a post-space cleaning method influencing the luting procedure.
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Affiliation(s)
- Lilian Vieira Oliveira
- Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Endodontics, Uberlândia, MG, Brazil
| | - Thais Souza Maia
- Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Operative Dentistry and Dental Materials, Uberlândia, MG, Brazil
| | - Karla Zancopé
- Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Occlusion, Fixed Prostheses, and Dental Materials, Uberlândia, MG, Brazil
| | - Murilo de Souza Menezes
- Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Operative Dentistry and Dental Materials, Uberlândia, MG, Brazil
| | - Carlos José Soares
- Universidade Federal de Uberlândia - UFU, School of Dentistry, Department of Operative Dentistry and Dental Materials, Uberlândia, MG, Brazil
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23
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Hashemikamangar SS, Hasanitabatabaee M, Kalantari S, Gholampourdehaky M, Ranjbaromrani L, Ebrahimi H. Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er,Cr:YSGG Laser and Thermocycling. J Lasers Med Sci 2018; 9:36-42. [PMID: 29399310 DOI: 10.15171/jlms.2018.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: This study aimed to determine the bond strength of fiber post to composite core following surface treatment with Er,Cr:YSGG laser at different powers and sandblasting with and without thermocycling. Methods: In this experimental study, 30 fiber posts (Glassix, Nordin, Switzerland) were randomly divided into 5 groups of sandblasting, no treatment and laser irradiation at 1, 1.5 and 2 W powers. Following composite filling and mounting, 1-mm thick sections were made for pushout bond strength testing. Half of the samples in each group were subjected to thermocycling (n=15). Two-way analysis of variance (ANOVA) was used to analyze the bond strength values. Pairwise comparisons were made using Tukey test (P<0.05). Results: Effect of treatment method on push-out bond strength of fiber post to composite core was significant (P=0.017), while thermocycling had no significant effect on bond strength (P=0.964). Pairwise comparison of surface treatment methods revealed no significant difference in groups with and without thermocycling (P>0.05), but Er,Cr:YSGG laser irradiation with 1 W power yielded significantly higher bond strength than the control group (P=0.01). Conclusion: Irradiation of Er,Cr:YSGG laser at 1 W power increased the bond strength of fiber post to composite core. Thermocycling slightly decreased the bond strength at the fiber postcore interface.
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Affiliation(s)
| | | | - Saman Kalantari
- Operative Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrzad Gholampourdehaky
- Internal Medicine and Endocrinology, Medical Faculty, Aja University of Medical Sciences, Tehran, Iran
| | - Ladan Ranjbaromrani
- Operative Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Hooman Ebrahimi
- Laser Research Center, School of Dentistry, Tehran University Of Medical Sciences, International Campus, Tehran, Iran
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Gupta P, Sharma A, Pathak VK, Mankeliya S, Bhardwaj S, Dhanare P. Intricate Estimation and Assessment of Surface Conditioning of Posts to improve Interfacial Adhesion in Post-core Restorations: An in vitro Study. J Contemp Dent Pract 2017; 18:1177-1180. [PMID: 29208794 DOI: 10.5005/jp-journals-10024-2195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Post and core restorations are routinely used for restoring grossly decayed tooth structures. Various chemical agents are known to affect the interfacial adhesions between the post and the core. Hence, we planned the present study to evaluate the effect of various post-surface treatments on the interfacial strength between the posts and composite materials that are used for building up the core portion. MATERIALS AND METHODS The present study included assessment of the effect of surface conditioning of posts on the interfacial adhesion in post-core restorations. A total of 80 clear post-tapers were included and were divided broadly into four study groups based on the type of chemical testing protocols used. Various chemical treatments included alkaline potassium permanganate, hydrogen peroxide, and phosphoric acid. The fourth group was the control group. The composite core material was used for building up the core. Testing of the tensile load was done on a universal testing machine. All the results were analyzed by the Statistical Package for the Social Sciences (SPSS) software. RESULTS The highest bond strength was observed in the study group treated with alkaline potassium permanganate, while the lowest was observed in the control group followed by the hydrogen peroxide group. While comparing the mean bond strength in between various study groups, significant results were obtained. CONCLUSION Chemical treatment protocol significantly alters the mean bond strength of the post and core restoration. CLINICAL SIGNIFICANCE Potassium permanganate significantly increases the bond strength between the fiber post and core restoration.
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Affiliation(s)
- Priyanka Gupta
- Department of Conservative Dentistry and Endodontics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India, Phone: +917898201826, e-mail:
| | - Amil Sharma
- Department of Conservative Dentistry and Endodontics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India
| | - Vivek K Pathak
- Department of Conservative Dentistry and Endodontics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India
| | - Saurabh Mankeliya
- Department of Conservative Dentistry and Endodontics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India
| | - Shivanshu Bhardwaj
- Department of Conservative Dentistry and Endodontics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India
| | - Poorvasha Dhanare
- Department of Orthodontics and Dentofacial Orthopedics Maharana Pratap College of Dentistry & Research Centre Gwalior, Madhya Pradesh, India
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Barcelos LM, Bicalho AA, Veríssimo C, Rodrigues MP, Soares CJ. Stress Distribution, Tooth Remaining Strain, and Fracture Resistance of Endodontically Treated Molars Restored Without or With One or Two Fiberglass Posts And Direct Composite Resin. Oper Dent 2017; 42:646-657. [DOI: 10.2341/16-224-l] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
ABSTRACT
Objectives:
To evaluate the effects of direct composite resin without a post or with one or two fiberglass posts on the restoration of severely compromised endodontically treated molars.
Methods and Materials:
Forty-five molars with 2 mm of “remaining tooth structure” were divided into three groups: Wfgp, restored with Filtek Z350XT without a fiberglass post; 1fgp, restored with Z350XT with one fiberglass post in the distal root canal; and 2fgp, restored with Z350XT with two fiberglass posts, one in the distal root canal and the other in the mesial-buccal root canal. The teeth were load cycled. Tooth remaining strain was measured using strain gauges (n=10) at two moments: TrSt-100 N, during 100 N occlusal loading, and TrSt-Fr, at fracture load. Fracture resistance was calculated, and fracture mode was classified. The elastic modulus and Vickers hardness were calculated using dynamic indentation (n=5). Stress distribution was analyzed by three-dimensional finite element analysis.
Results:
The use of two fiberglass posts resulted in lower fracture resistance than was noted in the groups with one fiberglass post and without fiberglass posts. The lingual surface of the remaining tooth had higher strain values than the buccal surface, regardless of the restorative technique and moment of evaluation. The absence of a fiberglass post resulted in significantly higher strain values and more irreparable fracture modes than were noted in the other groups. The use of one fiberglass post had a better strain/fracture resistance ratio. Stresses were concentrated in the occlusal portion of the post and in the furcation region. The presence of one fiberglass post resulted in better stress distribution in the entire distal root dentin, reducing stress on the critical areas.
Conclusions:
The use of one fiberglass post for restoring molars with direct composite resin resulted in higher fracture resistance than did the use of two fiberglass posts; it also resulted in better tooth remaining strain and stress distribution and more reparable fracture modes than were seen in the group without a fiberglass post.
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Affiliation(s)
- LM Barcelos
- Luciana Mendes Barcelos, Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Minas Gerais, Brazil
| | - AA Bicalho
- Aline Aredes Bicalho, Technical Health School, Federal University of Uberlândia, Minas Gerais, Brazil
| | - C Veríssimo
- Crisnicaw Veríssimo, School of Dentistry, University of Uberaba, Uberaba, Minas Gerais, Brazil
| | - MP Rodrigues
- Monise de Paula Rodrigues, Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Minas Gerais, Brazil
| | - CJ Soares
- Carlos Jose Soares, Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Minas Gerais, Brazil
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Xie H, Ji Y, Tian Q, Wang X, Zhang N, Zhang Y, Xu J, Wang N, Yan J. Autogenous bone particle/titanium fiber composites for bone regeneration in a rabbit radius critical-size defect model. Connect Tissue Res 2017; 58:553-561. [PMID: 28095112 DOI: 10.1080/03008207.2017.1281259] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE To explore the effects of autogenous bone particle/titanium fiber composites on repairing segmental bone defects in rabbits. MATERIALS AND METHODS A model of bilateral radial bone defect was established in 36 New Zealand white rabbits which were randomly divided into 3 groups according to filling materials used for bilaterally defect treatment: in group C, 9 animal bone defect areas were prepared into simple bilateral radius bone defect (empty sham) as the control group; 27 rabbits were used in groups ABP and ABP-Ti. In group ABP, left defects were simply implanted with autogenous bone particles; meanwhile, group ABP-Ti animals had right defects implanted with autogenous bone particle/titanium fiber composites. Animals were sacrificed at 4, 8, and 12 weeks, respectively, after operation. RESULTS Micro-CT showed that group C could not complete bone regeneration. Bone volume to tissue volume values in group ABP-Ti were better than group ABP. From histology and histomorphometry Groups ABP and ABP-Ti achieved bone repair, the bone formation of group ABP-Ti was better. The mechanical strength of group ABP-Ti was superior to that of other groups. CONCLUSIONS These results confirmed the effectiveness of autologous bone particle/titanium fiber composites for promoting bone regeneration and mechanical strength.
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Affiliation(s)
- Huanxin Xie
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
| | - Ye Ji
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
| | - Qi Tian
- b Department of Stomatology, Zhaochunyu Dental Clinic , Harbin , China
| | - Xintao Wang
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
| | - Nan Zhang
- c Department of Orthopaedic Surgery, the Second Affiliated Hospital of Qiqihar Medical College , Qiqihar , China
| | - Yicai Zhang
- d Department of Orthopaedic Surgery, Harbin the First Hospital , Harbin , China
| | - Jun Xu
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
| | - Nanxiang Wang
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
| | - Jinglong Yan
- a Department of Orthopaedic Surgery , the Second Affiliated Hospital of Harbin Medical University , Harbin , China
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Kırmalı Ö, Üstün Ö, Kapdan A, Kuştarcı A. Evaluation of Various Pretreatments to Fiber Post on the Push-out Bond Strength of Root Canal Dentin. J Endod 2017; 43:1180-1185. [DOI: 10.1016/j.joen.2017.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 10/19/2022]
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Aksornmuang J, Chuenarrom C, Chittithaworn N. Effects of various etching protocols on the flexural properties and surface topography of fiber-reinforced composite dental posts. Dent Mater J 2017; 36:614-621. [PMID: 28566672 DOI: 10.4012/dmj.2016-290] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to evaluate the flexural properties and surface topography of fiber posts surface-treated with various etching protocols. Seventy each of three types of fiber posts: RelyX Fiber Post, Tenax Fiber Trans, and D.T. Light-Post Illusion X-Ro, were randomly divided into 7 groups: no surface treatment, surface treated with hydrofluoric acid (HF) 4.5% for 60 s, HF 4.5% for 120 s, HF 9.6% for 15 s, HF 9.6% for 60 s, HF 9.6% for 120 s, and treated with H2O2 24% for 10 min. The specimens were then subjected to a three-point bending test. Surface topographies of the posts were observed using a SEM. The results indicate that fiber post surface pretreatments had no adverse effects on the flexural properties. However, the fiber posts treated with high HF concentrations or long etching times seemed to have more surface irregularities.
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Affiliation(s)
- Juthatip Aksornmuang
- Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University
| | - Chanya Chuenarrom
- Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University
| | - Natjira Chittithaworn
- Department of Prosthetic Dentistry, Faculty of Dentistry, Prince of Songkla University
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Park JS, Lee JS, Park JW, Chung WG, Choi EH, Lee Y. Comparison of push-out bond strength of fiber-reinforced composite resin posts according to cement thickness. J Prosthet Dent 2017; 118:372-378. [PMID: 28222875 DOI: 10.1016/j.prosdent.2016.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/03/2016] [Accepted: 11/03/2016] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM Post space size and cement thickness can differ because of variations in root canal morphology, such as an oval shape, and because the entire canal space cannot be included in the post space preparation. As a result, increased cement thickness around the post may affect the bond strength between the post and the dentin. PURPOSE The purpose of this in vitro study was to evaluate the push-out bond strength of fiber-reinforced composite resin posts to root dentin with cement layers of varying thickness. MATERIAL AND METHODS Thirty human premolars were endodontically treated and restored with fiber-reinforced composite resin posts. Post space was prepared using a drill with a 1.5-mm diameter and diameters of 1.25 mm (small [S] group), 1.375 mm (medium [M] group), and 1.5 mm (large [L] group) were cemented. The specimens were sectioned horizontally into 1-mm-thick slices, and the push-out bond strengths of the apical and coronal fragments were evaluated. Bond strength was compared using analysis of variance and 2-sample t tests (α=.05). RESULTS No significant differences were found in the debonding force and push-out bond strength among fiber-reinforced composite posts of different sizes (P>.05). The mean debonding force and standard deviation of the posts were 25.05 ±9.52 N for the S group, 28.17 ±11.38 N for the M group, and 33.78 ±12.47 N for the L group. The corresponding push-out bond strength values were 3.11 ±1.54 MPa, 3.39 ±1.4 MPa, and 4.15 ±1.75 MPa. The differences in debonding force between the apical (26.43 ±10.72 N) and coronal (31.57 ±12.03 N) areas were not significant (P>.05). However, the differences in push-out bond strength between the apical (4.27 ±1.73 MPa) and coronal areas (2.83 ±1.08 MPa) were significant (P<.05). CONCLUSIONS The widening of post spaces and, consequently, the increased cement thickness do not significantly affect the bond strength of fiber-reinforced composite resin posts to root dentin.
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Affiliation(s)
- Jun-Seong Park
- Resident, Department of Conservative Dentistry, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - Jeong-Sub Lee
- Assistant Professor, Department of Orthodontics, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - Jeong-Won Park
- Professor, Department of Conservative Dentistry, Gangnam Severance Hospital, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Won-Gyun Chung
- Professor, Department of Conservative Dentistry, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - Eun-Hee Choi
- Research Professor, Institute of Lifestyle Medicine, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - Yoon Lee
- Associate Professor, Department of Conservative Dentistry, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea.
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Barbosa Siqueira C, Spadini de Faria N, Raucci-Neto W, Colucci V, Alves Gomes E. Evaluation of Mechanical Properties of Glass Fiber Posts Subjected to Laser Surface Treatments. Photomed Laser Surg 2016; 34:460-466. [PMID: 27564314 DOI: 10.1089/pho.2016.4144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the influence of laser irradiation on flexural strength, elastic modulus, and surface roughness and morphology of glass fiber posts (GFPs). BACKGROUND DATA Laser treatment of GFPs has been introduced to improve its adhesion properties. MATERIALS AND METHODS A total of 40 GFPs were divided into 4 groups according to the irradiation protocol: GC-no irradiation, GYAG-irradiation with erbium:yttrium-aluminum-garnet [Er:YAG], GCR-irradiation with erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG), and GDI-irradiation with diode laser. The GFP roughness and morphology were evaluated through laser confocal microscopy before and after surface treatment. Three-point bending flexural test measured flexural strength and elastic modulus. Data about elastic modulus and flexural strength were subjected to one-way ANOVA and Bonferroni test (p < 0.05). The effect of roughness was evaluated using the linear mixed effects model and Bonferroni test (p < 0.05). RESULTS Laser treatment changed surface roughness in the groups GCR (p = 0.000) and GDI (p = 0.007). The mean flexural strength in GYAG (995.22 MPa) was similar to that in GC (980.48 MPa) (p = 1.000) but different from that in GCR (746.83 MPa) and that in GDI (691.34 MPa) (p = 0.000). No difference was found between the groups GCR and GDI (p = 0.86). For elastic modulus: GYAG (24.47 GPa) was similar to GC (25.92 GPa) (p = 1.000) but different from GCR (19.88 GPa) (p = 0.002) and GDI (17.20 GPa) (p = 0.000). CONCLUSIONS The different types of lasers, especially Er,Cr:YSGG and 980 ηm diode, influenced the mechanical properties of GFPs.
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Affiliation(s)
| | | | - Walter Raucci-Neto
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
| | - Vivian Colucci
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
| | - Erica Alves Gomes
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
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Daneshkazemi A, Davari A, Askari N, Kaveh M. Effect of different fiber post surface treatments on microtensile bond strength to composite resin. J Prosthet Dent 2016; 116:896-901. [PMID: 27475918 DOI: 10.1016/j.prosdent.2016.03.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 03/29/2016] [Accepted: 03/29/2016] [Indexed: 10/21/2022]
Abstract
STATEMENT OF PROBLEM The interface of fiber post and composite resin is a site of potential failure of adhesion. Improving this interface adhesion through different pretreatments of the fiber post surface has been suggested, but the results are controversial. PURPOSE The purpose of this in vitro study was to evaluate the effect on the bond strength to composite resin of pretreating glass fiber post surfaces with hydrogen peroxide, phosphoric acid, and a silane coupling agent. MATERIAL AND METHODS Glass fiber posts were treated for 1 or 5 minutes with 30% hydrogen peroxide or 35% phosphoric acid. Treated posts were divided into silanization and no silanization groups. Control groups included no treatment or treatment with silanization alone (total of 10 groups; n=14). Composite resin was bonded to the fiber posts, and the specimens were cut into beams with the fiber post in the middle and the composite resin at both sides. The beams were attached to a mechanical testing device, and microtensile bond strength was evaluated. Fracture modes were assessed using stereomicroscopy. Statistical analysis was done with 3- and 2-way ANOVA (α=.05). Additional specimens were evaluated with a scanning electron microscope (SEM) to evaluate the effect of treatments on the characteristics of fiber post surfaces. RESULTS The highest bond strength values were found in the group treated with phosphoric acid for 5 minutes with silanization, followed by the group treated with silanization alone. ANOVA showed a statistically significant effect for silanization (P<.05), but no statistically significant effect for surface treatment. SEM evaluation revealed cracked and dislodged superficial fibers in all groups, with no obvious difference in fiber exposure among the groups. CONCLUSIONS The silane coupling agent had a significant effect on the bond strength of the tested glass fiber posts to composite resin, whereas 30% hydrogen peroxide or 35% phosphoric acid did not.
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Affiliation(s)
- Alireza Daneshkazemi
- Associate Professor, Department of Operative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Abdolrahim Davari
- Professor, Department of Operative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Navid Askari
- Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Maedeh Kaveh
- Graduate student, Department of Operative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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Kaval ME, Akin H, Guneri P. Radiopacity of Esthetic Post Materials: Evaluation with Digital Analysis Technique. J Prosthodont 2015; 26:455-459. [PMID: 26513716 DOI: 10.1111/jopr.12386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2015] [Indexed: 01/22/2023] Open
Abstract
PURPOSE To evaluate the radiopacity of five post materials using a digital image analysis method. MATERIALS AND METHODS Twelve specimens from each post type (two zirconia and three fiber based) of 2 mm in thickness were obtained using a diamond blade mounted on a cutting machine, and digital radiographs were taken along with aluminum step-wedge and dentin discs under standard exposure conditions. The mean gray-values of specimens were measured using a computer graphics program. Data were analyzed using one-way ANOVA followed by Holm-Sidak multicomparison test (p = 0.05). RESULTS The highest radiopacity was observed in custom zirconia (5.842 millimeters of equivalent Al [mmAl]), and the lowest value was detected with FRC-Postec (Ivoclar Vivadent) (1.716 mmAl). Significant differences were revealed between the radiopacity values among all groups (p < 0.05), except the Zr post materials (p = 0.56). CONCLUSIONS All tested post materials had higher radiopacity than dentin. Further studies will be required to clarify optimum radiopacity properties of the post materials to provide a precise clinical observation.
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Affiliation(s)
- Mehmet Emin Kaval
- Department of Endodontology, School of Dentistry, Ege University, Izmir, Turkey
| | - Hakan Akin
- Faculty of Dentistry, Department of Prosthodontics, Cumhuriyet University, Sivas, Turkey
| | - Pelin Guneri
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Ege University, Izmir, Turkey
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Moraes AP, Sarkis-Onofre R, Moraes RR, Cenci MS, Soares CJ, Pereira-Cenci T. Can Silanization Increase the Retention of Glass-fiber posts? A Systematic Review and Meta-analysis of In Vitro Studies. Oper Dent 2015; 40:567-80. [PMID: 26151460 DOI: 10.2341/14-330-o] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The role of silanes in the bonding of resin luting agents to glass-fiber posts (GFPs) is a controversial topic, and the question still remains whether post silanization is able to improve the retention of GFPs luted into root canals. Thus, this study was designed to determine whether evidence exists to justify silanization of GFPs before cementation to increase their retention into root canals. In vitro studies that evaluated the retention of GFPs cemented into root canals or artificial substrates and that used silane coupling agents for pretreatment of the post were selected. Searches were carried out in PubMed and Scopus databases with no publication year or language limits. The last search was carried out in August 2014. Two distinct data analyses were carried out: 1) control group (no post pretreatment) vs silane only and 2) post pretreatment + silane vs silane only. Pooled-effect estimates were obtained by comparing the difference between each bond strength mean value and were expressed as the weighted mean difference between groups (p≤0.05). A total of 178 articles were found, and 23 were included in the review. The results were affected by the substrate into which the GFPs were luted (teeth or artificial devices). The analysis between control group and silane only for studies that used artificial devices favored the use of silane (p<0.0001), but considering studies that used teeth as substrate, no significant difference was observed (p=0.35). The analysis between silane only and pretreatment + silane did not show a significant difference between groups when artificial devices were used (p=0.71), whereas the analysis favored the use of post pretreatment + silane over silane (p<0.00001) only when the GFPs were luted into teeth. In conclusion, this review indicates that silanization improves the retention of GFPs luted into root canals provided that selective surface pretreatments are applied to the post before silanization.
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Akin GE, Kaval ME, Turk T, Akin H. Surface Roughness and Bond Strength of Zirconia Posts to a Resin Cement After Various Surface Pretreatments. Photomed Laser Surg 2015; 33:246-51. [DOI: 10.1089/pho.2014.3861] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Gulsah E. Akin
- Department of Restorative Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey
| | - Mehmet Emin Kaval
- Department of Endodontics, Faculty of Dentistry, Ege University, İzmir, Turkey
| | - Tugba Turk
- Department of Endodontics, Faculty of Dentistry, Ege University, İzmir, Turkey
| | - Hakan Akin
- Department of Prosthodontics, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey
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Aksornmuang J, Nakajima M, Tagami J. Effect of viscosity of dual-cure luting resin composite core materials on bond strength to fiber posts with various surface treatments. J Dent Sci 2014. [DOI: 10.1016/j.jds.2014.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Effect of surface treatments on the flexural properties and adhesion of glass fiber-reinforced composite post to self-adhesive luting agent and radicular dentin. Odontology 2014; 104:60-7. [DOI: 10.1007/s10266-014-0184-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 10/16/2014] [Indexed: 10/24/2022]
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Akin GE, Akin H, Sipahi C, Piskin B, Kirmali O. Evaluation of surface roughness and bond strength of quartz fiber posts after various pre-treatments. Acta Odontol Scand 2014; 72:1010-6. [PMID: 25139129 DOI: 10.3109/00016357.2014.939710] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Debonding at the post-adhesive interface is a major problem for quartz fiber posts. The objective of this study was to evaluate surface roughness and bond strength of quartz fiber posts after various surface treatments. MATERIALS AND METHODS Sixty-six quartz fiber posts were randomly divided into six experimental groups (n = 11) including group C, untreated (control); group SB, sandblasted; group SC, silica coated; group HF, hydrofluoric acid-etched; group N, Nd:YAG laser irradiated; group E, Er:YAG laser irradiated. Surface roughness of the posts was measured before and after pre-treatment. They were then bonded to resin cement and tensile bond strength was determined in a universal testing machine. Furthermore, two-way ANOVA and post hoc comparison tests (α = 0.05) were performed on all data. RESULTS The highest mean force value was observed in group SB and followed by group E. Tukey's HSD test showed that there was no statistical difference between group SB and group E (p = 0.673). The highest mean roughness value was observed in group SB and a significant difference was found between group SB and all other groups (p < 0.001). This study reveals that sandblasting and Er:YAG laser irradiation provided a significant increase in bond strength between quartz fiber posts and resin cement. CONCLUSIONS Sandblasting or Er:YAG laser-irradiation of the surface of the quartz fiber post before cementation is recommended for increasing retention.
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Sipahi C, Piskin B, Akin GE, Bektas OO, Akin H. Adhesion between glass fiber posts and resin cement: evaluation of bond strength after various pre-treatments. Acta Odontol Scand 2014; 72:509-15. [PMID: 24432787 DOI: 10.3109/00016357.2013.875586] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To evaluate surface roughness and bond strength of glass fiber posts to a resin cement after various surface treatments. MATERIALS AND METHODS Sixty individually formed glass fiber posts with a diameter of 1.5 mm and a length of 20 mm were used for this study. They were randomly assigned to six groups of pre-treatment (n = 10/group): Group C, untreated (control); Group SB, sandblasted; Group SC, silica coated; Group HF, hydrofluoric acid-etched; Group N, Nd:YAG laser irradiated; Group E, Er:YAG laser irradiated. Surface roughness of the posts was measured before and after pre-treatment. The posts were then bonded to resin cement and tensile bond strengths were determined in a universal testing machine. For statistical analysis, two-way ANOVA and post-hoc comparison tests (α = 0.05) were performed. RESULTS The highest bond strength value was observed in group HF, followed by group SC. There was a statistically significant difference in bond strength between group C and groups HF, SC and E (p < 0.001, p = 0.002 and p = 0.041, respectively). Posts of group SB and group N showed the highest surface roughness. CONCLUSIONS The findings of the present study reveal that hydrofluoric acid-etching, silica coating and Er:YAG laser irradiation provided a significant increase in bond strength between glass fiber posts and resin cement.
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Affiliation(s)
- Cumhur Sipahi
- Department of Prosthodontics, Gulhane Military Medical Academy , Ankara , Turkey
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Kurtulmus-Yilmaz S, Cengiz E, Ozan O, Ramoglu S, Yilmaz HG. The Effect of Er,Cr:YSGG Laser Application on the Micropush-Out Bond Strength of Fiber Posts to Resin Core Material. Photomed Laser Surg 2014; 32:574-81. [DOI: 10.1089/pho.2014.3780] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Esra Cengiz
- Department of Restorative Dentistry, Faculty of Dentistry, Near East University, Mersin, Turkey
| | - Oguz Ozan
- Department of Prosthodontics, Faculty of Dentistry, Near East University, Mersin, Turkey
| | - Serhat Ramoglu
- Department of Prosthodontics, Faculty of Dentistry, Near East University, Mersin, Turkey
| | - Hasan Guney Yilmaz
- Department of Periodontology, Faculty of Dentistry, Near East University, Mersin, Turkey
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Lamichhane A, Xu C, Zhang FQ. Dental fiber-post resin base material: a review. J Adv Prosthodont 2014; 6:60-5. [PMID: 24605208 PMCID: PMC3942529 DOI: 10.4047/jap.2014.6.1.60] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 12/30/2013] [Accepted: 01/13/2014] [Indexed: 11/08/2022] Open
Abstract
Teeth that have short clinical crown, which are not alone enough to support the definitive restoration can be best treated using the post and core system. The advantages of fiber post over conventional metallic post materials have led to its wide acceptance. In addition to that the combination of aesthetic and mechanical benefits of fiber post has provided it with a rise in the field of dentistry. Also the results obtained from some clinical trials have encouraged the clinicians to use the fiber posts confidently. Fiber posts are manufactured from pre-stretched fibers impregnated within a resin matrix. The fibers could that be of carbon, glass/silica, and quartz, whereas Epoxy and bis-GMA are the most widely used resin bases. But recently studies are also found to be going on for polyimide as possible material for the fiber post resin base as a substitute for the conventional materials.
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Affiliation(s)
- Aashwini Lamichhane
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. ; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Chun Xu
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. ; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Fu-Qiang Zhang
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. ; Shanghai Key Laboratory of Stomatology, Shanghai, China
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Liu C, Liu H, Qian YT, Zhu S, Zhao SQ. The influence of four dual-cure resin cements and surface treatment selection to bond strength of fiber post. Int J Oral Sci 2013; 6:56-60. [PMID: 24177170 PMCID: PMC3967305 DOI: 10.1038/ijos.2013.83] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Accepted: 08/13/2013] [Indexed: 11/27/2022] Open
Abstract
In this study, we evaluate the influence of post surface pre-treatments on the bond strength of four different cements to glass fiber posts. Eighty extracted human maxillary central incisors and canines were endodontically treated and standardized post spaces were prepared. Four post pre-treatments were tested: (i) no pre-treatment (NS, control), (ii) sandblasting (SA), (iii) silanization (SI) and (iv) sandblasting followed by silanization (SS). Per pre-treatment, four dual-cure resin cements were used for luting posts: DMG LUXACORE Smartmix Dual, Multilink Automix, RelyX Unicem and Panavia F2.0. All the specimens were subjected to micro push-out test. Two-way analysis of variance and Tukey post hoc tests were performed (α=0.05) to analyze the data. Bond strength was significantly affected by the type of resin cement, and bond strengths of RelyX Unicem and Panavia F2.0 to the fiber posts were significantly higher than the other cement groups. Sandblasting significantly increased the bond strength of DMG group to the fiber posts.
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Affiliation(s)
- Chang Liu
- College and Hospital of Stomatology, Jilin University, Changchun, China
| | - Hong Liu
- College and Hospital of Stomatology, Jilin University, Changchun, China
| | - Yue-Tong Qian
- Clinical Medical College, Jilin University, Changchun, China
| | - Song Zhu
- College and Hospital of Stomatology, Jilin University, Changchun, China
| | - Su-Qian Zhao
- College and Hospital of Stomatology, Jilin University, Changchun, China
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Effect of components and surface treatments of fiber-reinforced composite posts on bond strength to composite resin. J Mech Behav Biomed Mater 2013; 26:23-33. [PMID: 23800844 DOI: 10.1016/j.jmbbm.2013.05.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 05/14/2013] [Accepted: 05/19/2013] [Indexed: 11/22/2022]
Abstract
The aim of this study was to clarify the effect of the components and surface treatments of fiber-reinforced composite (FRC) posts on the durable bonding to core build-up resin evaluated using the pull-out and microtensile tests. Four types of experimental FRC posts, combinations of two types of matrix resins (polymethyl methacrylate and urethane dimethacrylate) and two types of fiberglass (E-glass and zirconia-containing glass) were examined. The FRC posts were subjected to one of three surface treatments (cleaned with ethanol, dichloromethane, or sandblasting). The bond strength between the FRC posts and core build-up resin were measured using the pull-out and microtensile tests before and after thermal cycling. The bond strengths obtained by each test before and after thermal cycling were statistically analyzed by three-way ANOVA and Tukey's multiple comparisons test (p<0.05). The bond strengths except for UDMA by the pull-out test decreased after thermal cycling. Regardless the test method and thermal cycling, matrix resins, the surface treatment and their interaction were statistically significant, but fiberglass did not. Dichloromethane treatment was effective for the PMMA-based FRC posts by the pull-out test, but not by the microtensile test. Sandblasting was effective for both PMMA- and UDMA-based FRC posts, regardless of the test method. The bond strengths were influenced by the matrix resin of the FRC post and the surface treatment. The bond strengths of the pull-out test showed a similar tendency of those of the microtensile test, but the value obtained by these test were different.
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Mosharraf R, Ranjbarian P. Effects of post surface conditioning before silanization on bond strength between fiber post and resin cement. J Adv Prosthodont 2013; 5:126-32. [PMID: 23755337 PMCID: PMC3675284 DOI: 10.4047/jap.2013.5.2.126] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 05/03/2013] [Accepted: 05/08/2013] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Post surface conditioning is necessary to expose the glass fibers to enable bonding between fiber post and resin cement. The purpose of the present study was to evaluate the effect of different surface conditioning on tensile bond strength (TBS) of a glass fiber reinforced post to resin cement. MATERIALS AND METHODS In this in vitro study, 40 extracted single canal central incisors were endodontically treated and post spaces were prepared. The teeth were divided into four groups according to the methods of post surface treatment (n=10): 1) Silanization after etching with 20% H2O2, 2) Silanization after airborne-particle abrasion, 3) Silanization, and 4) No conditioning (Control). Adhesive resin cement (Panavia F 2.0) was used for cementation of the fiber posts to the root canal dentin. Three slices of 3 mm thick were obtained from each root. A universal testing machine was used with a cross-head speed of 1 mm/minute for performing the push-out tests. Two-way ANOVA and Tukey post hoc tests were used for analyzing data (α=0.05). RESULTS It is revealed that different surface treatments and root dentin regions had significant effects on TBS, but the interaction between surface treatments and root canal regions had no significant effect on TBS. There was significant difference among H2O2 + Silane Group and other three groups. CONCLUSION There were significant differences among the mean TBS values of different surface treatments. Application of hydrogen peroxide before silanization increased the bond strength between resin cements and fiber posts. The mean TBS mean values was significantly greater in the coronal region of root canal than the middle and apical thirds.
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Affiliation(s)
- Ramin Mosharraf
- Dental Materials Research Center and Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Khamverdi Z, Zahra K, Talebian R, Reza T. Effect of ascorbic acid, ethanol and acetone on adhesion between the treated fiber posts and composite resin cores. J Adv Prosthodont 2012; 4:187-91. [PMID: 23236569 PMCID: PMC3517955 DOI: 10.4047/jap.2012.4.4.187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 07/26/2012] [Accepted: 08/06/2012] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The aim of the present study was to assess the effect of ascorbic acid, ethanol and acetone on microtensile bond strength between fiber posts pre-treated with hydrogen peroxide and composite resin cores. MATERIALS AND METHODS Twenty four fiber posts were pre-treated with 24% hydrogen peroxide and divided into 4 groups as follows: G1: no treatment, as control group; G2: treatment with 10% ascorbic acid solution for 5 minutes; G3: treatment with 70% ethanol solution for 5 minutes; and G4: treatment with 70% acetone solution for 5 minutes. Each fiber post was surrounded by a cylinder-shaped polyglass matrix which was subsequently filled with composite resin. Two sections from each sample were selected for microtensile test at a crosshead with speed of 0.5 mm/min. Statistical analyses were performed using one-way ANOVA and a post hoc Tukey HSD test. Fractured surfaces were observed under a stereomicroscope at ×20 magnification. The fractured surfaces of the specimens were observed and evaluated under a SEM. RESULTS MEANS OF MICROTENSILE BOND STRENGTH VALUES (MPA) AND STANDARD DEVIATIONS IN THE GROUPS WERE AS FOLLOWS: G1: 9.70±0.81; G2: 12.62±1.80; G3: 16.60±1.93; and G4: 21.24±1.95. G4 and G1 had the highest and the lowest bond strength values, respectively. A greater bond strength value was seen in G3 compared to G2. There were significant differences between all the groups (P<.001). All the failures were of the adhesive mode. CONCLUSION Application of antioxidant agents may increase microtensile bond strength between fiber posts treated with hydrogen peroxide and composite cores. Acetone increased bond strength more than ascorbic acid and ethanol.
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Affiliation(s)
- Zahra Khamverdi
- Member of Dental Research Center, Department of Operative Dentistry, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran
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Kulunk S, Kulunk T, Yenisey M. Effects of different surface pre-treatments on the bond strength of adhesive resin cement to quartz fiber post. Acta Odontol Scand 2012; 70:547-54. [PMID: 22070563 DOI: 10.3109/00016357.2011.629623] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of mechanical and chemical surface treatment methods on the bond strength of resin cement to fiber post. MATERIALS AND METHODS The roots of 36 maxillary central incisor teeth were mounted in auto polymerized acrylic resin blocks (10 × 15 mm) and the root canals were enlarged with the drills of post system (2.1 mm width, 12 mm length). Thirty-six fiber posts were randomly assigned to one of the following surface conditioning methods: silane coupling agent, methylene chloride etching, 24% hydrogen peroxide etching, air abrasion with 50 µm Al(2)O(3), 1-3 µm synthetic diamond particles and silica coating with 30 µm SiO(x). Fiber posts were cemented to the root canals with adhesive resin cement (Panavia F 2.0). Three slices of 1.5 mm thick were obtained from each root. Push-out tests were performed with a universal testing machine. The data were analyzed with one-way analysis of variance (ANOVA) and Tukey HSD tests (α = 0.05). The effect of the surface treatments were examined under a scanning electron microscope (SEM) and surface roughness were evaluated with a profilometer. RESULTS Surface pre-treatment methods affected the bond strength (p < 0.05). The highest bond strengths were obtained by air abrasion with synthetic diamond particles, the lowest bond strength were obtained by etching with methylene chloride (p < 0.05). CONCLUSION Mechanical surface pre-treatment methods showed higher bond strength values than chemical methods. Synthetic diamond particles may be an alternative method to increase resin cement bonding on the quartz fiber post surfaces.
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Affiliation(s)
- Safak Kulunk
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
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Stewardson D, Shortall A, Marquis P. The Bond of Different Post Materials to a Resin Composite Cement and a Resin Composite Core Material. Oper Dent 2012; 37:E1-12. [DOI: 10.2341/11-409-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Purpose
To investigate the bond of endodontic post materials, with and without grit blasting, to a resin composite cement and a core material using push-out bond strength tests.
Materials and Methods
Fiber-reinforced composite (FRC) posts containing carbon (C) or glass (A) fiber and a steel (S) post were cemented into cylinders of polymerized restorative composite without surface treatment (as controls) and after grit blasting for 8, 16, and 32 seconds. Additional steel post samples were sputter-coated with gold before cementation to prevent chemical interaction with the cement. Cylindrical composite cores were bonded to other samples. After sectioning into discs, bond strengths were determined using push-out testing. Profilometry and electron microscopy were used to assess the effect of grit blasting on surface topography.
Results
Mean (standard deviation) bond strength values (MPa) for untreated posts to resin cement were 8.41 (2.80) for C, 9.61(1.88) for A, and 19.90 (3.61) for S. Prolonged grit blasting increased bond strength for FRC posts but produced only a minimal increase for S. After 32 seconds, mean values were 20.65 (4.91) for C, 20.41 (2.93) for A, and 22.97 (2.87) for S. Gold-coated steel samples produced the lowest bond strength value, 7.84 (1.40). Mean bond strengths for untreated posts bonded to composite cores were 6.19 (0.95) for C, 13.22 (1.61) for A, and 8.82 (1.18) for S, and after 32 seconds of grit blasting the values were 17.30 (2.02) for C, 26.47 (3.09) for A, and 20.61 (2.67) for S. FRC materials recorded higher roughness values before and after grit blasting than S. With prolonged grit blasting, roughness increased for A and C, but not for S.
Conclusions
There was no evidence of significant bonding to untreated FRC posts, but significant bonding occurred between untreated steel posts and the resin cement. Increases in the roughness of FRC samples were material dependent and roughening significantly increased bond strength values (p<0.05). Surface roughening of the tested FRC posts is required for effective bonding.
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Affiliation(s)
- D Stewardson
- Dominic Stewardson, PhD, BDS, University of Birmingham, College of Medical and Dental Sciences, School of Dentistry, Birmingham, United Kingdom
| | - A Shortall
- Adrian Shortall, DDS, BDS, FDS RCPS, FFD RCSI, University of Birmingham, College of Medical and Dental Sciences, School of Dentistry, Birmingham, United Kingdom
| | - P Marquis
- Peter Marquis, PhD, BSc, FIM, University of Birmingham, College of Medical and Dental Sciences, School of Dentistry, Birmingham, United Kingdom
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Mosharraf R, Baghaei Yazdi N. Comparative evaluation of effects of different surface treatment methods on bond strength between fiber post and composite core. J Adv Prosthodont 2012; 4:103-8. [PMID: 22737316 PMCID: PMC3381201 DOI: 10.4047/jap.2012.4.2.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Debonding of a composite resin core of the fiber post often occurs at the interface between these two materials. The aim of this study was to evaluate the effects of different surface treatment methods on bond strength between fiber posts and composite core. MATERIALS AND METHODS Sixty-four fiber posts were picked in two groups (Hetco and Exacto). Each group was further divided into four subgroups using different surface treatments: 1) silanization; 2) sandblasting; 3) Treatment with 24% H2O2, and 4) no treatment (control group). A cylindrical plexiglass matrix was placed around the post and filled with the core resin composite. Specimens were stored in 5000 thermal cycles between 5℃ and 55℃. Tensile bond strength (TBS) test and evaluation using stereomicroscope were performed on the specimen and the data were analyzed using two-way ANOVA, Post Hoc Scheffe tests and Fisher's Exact Test (α=.05). RESULTS There was a significant difference between the effect of different surface treatments on TBS (P<.001) but different brands of post (P=.743) and interaction between the brand of post and surface treatment (P=.922) had no significant effect on TBS. Both silanization and sandblasting improved the bonding strength of fiber posts to composite resin core, but there were not any significant differences between these groups and control group. CONCLUSION There was not any significant difference between two brands of fiber posts that had been used in this study. Although silanization and sandblasting can improve the TBS, there was not any significant differences between surface treatments used.
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Affiliation(s)
- Ramin Mosharraf
- Department of Prosthodontics and Dental Material Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Factors affecting the cement–post interface. Dent Mater 2012; 28:287-97. [DOI: 10.1016/j.dental.2011.11.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 10/09/2011] [Accepted: 11/01/2011] [Indexed: 11/18/2022]
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Braga NMA, Souza-Gabriel AE, Messias DCF, Rached-Junior FJA, Oliveira CF, Silva RG, Silva-Sousa YTC. Flexural properties, morphology and bond strength of fiber-reinforced posts: influence of post pretreatment. Braz Dent J 2012; 23:679-85. [DOI: 10.1590/s0103-64402012000600009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 12/04/2012] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to assess the influence of surface pretreatments of fiber-reinforced posts on flexural strength (FS), modulus of elasticity (ME) and morphology of these posts, as well as the bond strength (BS) between posts and core material. Fifty-two fiber posts (smooth and serrated) were assigned to 4 groups (n=13): no treatment (control), 10% hydrogen peroxide (HP) for 10 min (HP-10), 24% HP for 1 min (HP-24) and airborne-particle abrasion (Al2O3). To evaluate FS and ME, a 3-point bending test was performed. Three posts of each group were examined by scanning electron microscopy. Composite resin was used as the core build-up and samples were sectioned to obtain microtensile sticks. Data were analyzed by ANOVA and Tukey's test (α=0.05). For FS, significant differences were observed between posts type and surface pretreatment (p<0.05), with the highest means for the smooth posts. Al2O3 provided higher FS than HP-24. Al2O3 promoted higher ME than HP-24 and control. SEM images revealed partial dissolution of the resin matrix in all treated groups. The smooth posts had higher BS and FS than serrated posts (p<0.05). Mechanical properties of the glass fiber posts and the bond strength between posts and composite material were not altered by the surface treatments, except for airborne-particle abrasion that increased the post elastic modulus.
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Poskus LT, Sgura R, Paragó FEM, Silva EM, Guimarães JGA. Influence of post pattern and resin cement curing mode on the retention of glass fibre posts. Int Endod J 2010; 43:306-11. [DOI: 10.1111/j.1365-2591.2009.01681.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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