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Al-Chalabi ZS, Tuna SH. The effect of thermomechanical aging on the retention of a conometric system in a chewing simulator. J Prosthodont 2023; 32:838-845. [PMID: 36600594 DOI: 10.1111/jopr.13638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 12/16/2022] [Indexed: 01/06/2023] Open
Abstract
PURPOSE To evaluate the retention force of a novel conometric system after thermomechanical aging. In addition, the conometric system's retention force was compared with that of the cemented implant-retained crowns. MATERIALS AND METHODS Two systems to retain implant crowns were tested in this study: a conometric system and a cement-retained system. Forty-eight zirconia crowns were fabricated using computer-aided design and computer-aided manufacturing technology. Twenty-four zirconia crowns were cemented onto conometric caps with resin-modified glass ionomer cement, which were then connected with abutments. These specimens were divided into three groups, and each group was subjected to the pull-out test. A-control group: 12 specimens directly subjected to pull-out test; A-aged group: 12 specimens subjected to thermomechanical aging followed by pull-out test; A-repeat group: After the pull-out, the specimens in the aging group (A-aged) were reconnected, and the pull-out test was repeated once more. The remaining 24 zirconia crowns were cemented on standard abutments with zinc phosphate cement, and two groups were formed. C-control group: 12 specimens directly subjected to the pull-out test; C-aged group: 12 specimens subjected to thermomechanical aging followed by pull-out. Scanning electron microscope (SEM) was used to evaluate the surfaces of caps and abutments. To analyze the data, repeated measures, one-way ANOVA, and Bonferroni tests were used (p < 0.05). RESULTS The mean retention force value of the A-control group was 148.22 ± 16.37 N. The highest mean retention force value was measured in the A-aged group (204.93 ± 51.67 N), and the lowest mean retention force value was seen in the A-repeated group (77.02 ± 21.48 N). Thermomechanical aging had a significant influence (p < 0.05) on both systems. No significant differences in retention force were found between the thermomechanical aged groups of both systems (p > 0.05). SEM analysis revealed that aging had an impact on the surface of the conometric system's caps and abutments. CONCLUSIONS The retention force of the conometric system increased significantly following thermomechanical aging. No crown separation occurred during the thermomechanical aging of the conometric system. There was no significant difference in the retention of the conometric and cemented systems after thermomechanical aging.
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Affiliation(s)
- Zainab S Al-Chalabi
- Department of Prosthodontics, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey
| | - Süleyman H Tuna
- Department of Prosthodontics, Faculty of Dentistry, Dokuz Eylul University, Izmir, Turkey
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Saleh M, Taşar-Faruk S. Comparing the marginal leakage and retention of implant-supported restorations cemented by four different dental cements. Clin Implant Dent Relat Res 2019; 21:1181-1188. [PMID: 31692215 DOI: 10.1111/cid.12850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/12/2019] [Accepted: 09/16/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Despite the wide use of implants in dentistry, there is insufficient information about the ideal cement for retention. PURPOSE To determine the cement bond strength and marginal leakage of crown and partial denture cemented to implant abutments by four different types of cement. MATERIALS AND METHODS Eighty-four direct abutments were divided into eight groups (n = 7). Fifty-six crown and bridge restorations were cemented using zinc phosphate (ZM), temporary cement (TM), resin-modified glass-ionomer cement (GM), and self-adhesive resin cement (RM). After cementation, thermal cycling and incubation in basic fuchsin dye was applied. The maximum load to failure, marginal leakage, and fracture modes were evaluated. RESULTS The mean of retention strength for the bridges (874 N) was higher than the crown samples (705 N) (P = .005). The mean of retention strength for each cement group was ZM = 1298, RM = 1027, GM = 646, and TM = 187 N (P ≤ .0001). Marginal leakage was recorded in majority of the samples; the highest incidence was detected for ZM samples. The cement fracture was mostly adhesive in nature. CONCLUSION Self-adhesive resin and resin-modified glass ionomer cement had better mechanical properties to retain implant supported restorations.
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Affiliation(s)
- Mhammad Saleh
- Department of Prosthodontics, Faculty of Dentistry, Near East University, Nicosia, Turkish Republic of Northern Cyprus
| | - Simge Taşar-Faruk
- Department of Prosthodontics, Faculty of Dentistry, Near East University, Nicosia, Turkish Republic of Northern Cyprus
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The error of tensile strength tests and an approach for improvement. J Mech Behav Biomed Mater 2018; 87:138-142. [DOI: 10.1016/j.jmbbm.2018.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/26/2018] [Accepted: 07/01/2018] [Indexed: 11/20/2022]
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Davoudi A, Rismanchian M. Effects of modifying implant screw access channels on the amount of extruded excess cement and retention of cement-retained implant-supported dental prostheses: A systematic review. J Prosthet Dent 2018; 121:52-58. [PMID: 30006223 DOI: 10.1016/j.prosdent.2018.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 03/02/2018] [Accepted: 03/05/2018] [Indexed: 11/16/2022]
Abstract
STATEMENT OF PROBLEM Cement-retained implant-supported prostheses eliminate screw loosening and enhance esthetics. However, retrievability and the possibility of removing extruded excess cement (EEC) have been problematic. PURPOSE The purpose of this systematic review was to analyze the effects of modifying the screw access channel (SAC) on the amount of EEC and the retention of cement-retained implant-supported prostheses. MATERIAL AND METHODS PubMed, Web of Science, Scopus, and Google Scholar databases were searched with appropriate key words. Related titles and abstracts published up to June 2017 were screened and selected on the basis of defined inclusion criteria. Full texts of all studies were read and subjected to quality assessments. After the initial search, 1521 articles were included in the study. Of these, 11 studies were subjected to critical appraisal, and 10 of them were reliable enough in methodology to be systemically reviewed. RESULTS All the studies were in vitro and described a total of 260 specimens. According to the interpreted results, closed SACs caused lower retention with a higher amount of EEC, whereas open SACs caused the reverse. Also, as the abutment height decreased, retention decreased. CONCLUSIONS Extending the crown's margin into the SAC, leaving the SAC open, and using internal vents in the SAC space are possible methods of modifying the SAC to gain higher retentive values. Also, the use of internal vents in the SAC system and open or partially filled SAC space reduce the amount of EEC.
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Affiliation(s)
- Amin Davoudi
- Postgraduate student, Department of Prosthodontics, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mansour Rismanchian
- Professor, Dental Implants Research Center and Department of Prosthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
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Retention Strength after Compressive Cyclic Loading of Five Luting Agents Used in Implant-Supported Prostheses. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2107027. [PMID: 27822468 PMCID: PMC5086349 DOI: 10.1155/2016/2107027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/22/2016] [Indexed: 11/30/2022]
Abstract
The purpose of this study was to evaluate and compare the retention strength of five cement types commonly used in implant-retained fixed partial dentures, before and after compressive cyclic loading. In five solid abutments screwed to 5 implant analogs, 50 metal Cr-Ni alloy copings were cemented with five luting agents: resin-modified glass ionomer (RmGI), resin composite (RC), glass ionomer (GI), resin urethane-based (RUB), and compomer cement (CC). Two tensile tests were conducted with a universal testing machine, one after the first luting of the copings and the other after 100,000 cycles of 100 N loading at 0.72 Hz. The one way ANOVA test was applied for the statistical analysis using the post hoc Tukey test when required. Before and after applying the compressive load, RmGI and RC cement types showed the greatest retention strength. After compressive loading, RUB cement showed the highest percentage loss of retention (64.45%). GI cement recorded the lowest retention strength (50.35 N) and the resin composite cement recorded the highest (352.02 N). The type of cement influences the retention loss. The clinician should give preference to lower retention strength cement (RUB, CC, and GI) if he envisages any complications and a high retention strength one (RmGI, RC) for a specific clinical situation.
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Alvarez-Arenal A, Gonzalez-Gonzalez I, deLlanos-Lanchares H, Brizuela-Velasco A, Ellacuria-Echebarria J. The selection criteria of temporary or permanent luting agents in implant-supported prostheses: in vitro study. J Adv Prosthodont 2016; 8:144-9. [PMID: 27141259 PMCID: PMC4852267 DOI: 10.4047/jap.2016.8.2.144] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/27/2015] [Accepted: 01/12/2016] [Indexed: 11/17/2022] Open
Abstract
PURPOSE The use of temporary or permanent cements in fixed implant-supported prostheses is under discussion. The objective was to compare the retentiveness of one temporary and two permanent cements after cyclic compressive loading. MATERIALS AND METHODS The working model was five solid abutments screwed to five implant analogs. Thirty Cr-Ni alloy copings were randomized and cemented to the abutments with one temporary (resin urethane-based) or two permanent (resin-modified glass ionomer, resin-composite) cements. The retention strength was measured twice: once after the copings were cemented and again after a compressive cyclic loading of 100 N at 0.72 Hz (100,000 cycles). RESULTS Before loading, the retention strength of resin composite was 75% higher than the resin-modified glass ionomer and 2.5 times higher than resin urethanebased cement. After loading, the retentiveness of the three cements decreased in a non-uniform manner. The greatest percentage of retention loss was shown by the temporary cement and the lowest by the permanent resin composite. However, the two permanent cements consistently show high retention values. CONCLUSION The higher the initial retention of each cement, the lower the percentage of retention loss after compressive cyclic loading. After loading, the resin urethane-based cement was the most favourable cement for retrieving the crowns and resin composite was the most favourable cement to keep them in place.
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Affiliation(s)
- Angel Alvarez-Arenal
- Department of Prosthodontics and Occlusion, School of Dentistry, University of Oviedo, Oviedo, Spain
| | - Ignacio Gonzalez-Gonzalez
- Department of Prosthodontics and Occlusion, School of Dentistry, University of Oviedo, Oviedo, Spain
| | - Hector deLlanos-Lanchares
- Department of Prosthodontics and Occlusion, School of Dentistry, University of Oviedo, Oviedo, Spain
| | - Aritza Brizuela-Velasco
- Department of Oral Stomatology I, Faculty of Medicine and Dentistry, University of Basque Country, Bilbao, Spain
| | - Joseba Ellacuria-Echebarria
- Department of Oral Stomatology I, Faculty of Medicine and Dentistry, University of Basque Country, Bilbao, Spain
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Rani S, Verma M, Gill S, Gupta R. Comparative evaluation of bonding strength of computer aided machined ceramic, pressable ceramic, and milled metal implant abutment copings and effect of surface conditioning on bonding strength: An in vitro study. J Indian Prosthodont Soc 2016; 16:142-7. [PMID: 27141163 PMCID: PMC4837770 DOI: 10.4103/0972-4052.176517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background/Purpose: The aim of this study was to compare the shear bond strength of computer aided design/computer aided machined ceramic (CAD/CAM), pressable ceramic, and milled metal implant copings on abutment and the effect of surface conditioning on bonding strength. Materials and Methods: A total of 90 test samples were fabricated on three titanium abutments. Among 90 test samples, 30 copings were fabricated by CAD/CAM, 30 by pressable, and 30 by milling of titanium metal. These 30 test samples in each group were further subdivided equally for surface treatment. Fifteen out of 30 test samples in each group were surface conditioned with airborne particle abrasion. All the 90 test samples were luted on abutment with glass ionomer cement. Bonding strength was evaluated for all the samples using universal testing machine at a crosshead speed of 5 mm/min. The results obtained were compared and evaluated using one-way ANOVA with post-hoc and unpaired t-test at a significance level of 0.05. Results: The mean difference for CAD/CAM surface conditioned subgroup was 1.28 ± 0.12, for nonconditioned subgroup was 1.20 ± 0.11. The mean difference for pressable surface conditioned subgroup was 1.18 ± 0.04, and for nonconditioned subgroup was 0.75 ± 0.28. The mean difference for milled metal surface conditioned subgroup was 2.57 ± 0.58, and for nonconditioned subgroup was 1.49 ± 0.15. Conclusions: On comparison of bonding strength, milled metal copings had an edge over the other two materials, and surface conditioning increased the bond strength.
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Affiliation(s)
- Sapna Rani
- Department of Prosthodontics, MAIDS, New Delhi, India
| | - Mahesh Verma
- Department of Prosthodontics, MAIDS, New Delhi, India
| | - Shubhra Gill
- Department of Prosthodontics, MAIDS, New Delhi, India
| | - Rekha Gupta
- Department of Prosthodontics, MAIDS, New Delhi, India
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Nematollahi F, Beyabanaki E, Alikhasi M. Cement Selection for Cement-Retained Implant-Supported Prostheses: A Literature Review. J Prosthodont 2015; 25:599-606. [DOI: 10.1111/jopr.12361] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2015] [Indexed: 11/27/2022] Open
Affiliation(s)
- Fatemeh Nematollahi
- Department of Prosthodontics; Islamic Azad University; Dental Branch Tehran Iran
| | - Elaheh Beyabanaki
- Department of Prosthodontics; Faculty of Dentistry; Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Marzieh Alikhasi
- Dental Research Center, Dentistry Research Institute; Tehran University of Medical Sciences
- Department of Prosthodontics, Faculty of Dentistry; Tehran University of Medical Sciences; Tehran Iran
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Reddy SV, Reddy MS, Reddy CR, Pithani P, R SK, Kulkarni G. The influence of implant abutment surface roughness and the type of cement on retention of implant supported crowns. J Clin Diagn Res 2015; 9:ZC05-7. [PMID: 25954694 DOI: 10.7860/jcdr/2015/12060.5621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 02/02/2015] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To provide relative data on the retentive characters of the commonly used cements on different implant abutment surfaces. MATERIALS AND METHODS A total of 20 implant abutments were divided into 2 groups. Ten implants were unaltered and ten were air borne particle abraded with 50μ aluminium oxide. Three luting agents (Tempbond, IRM and ImProv) were used to secure the crowns to abutments. All the crowns were removed from the abutment with an Instron machine at 0.5mm per minute and tensile bond strengths were recorded. Statistical analysis was performed using Anova, Paired t-test and Post-Hoc tests. RESULTS IRM showed the highest mean tensile strength among the three cements when used with treated and untreated implant abutment surfaces. Change in the abutment surface roughness had no effect on the mean tensile bond strength of TempBond and IRM cements, whereas ImProv cement showed reduced tensile strength with sandblasted surface. CONCLUSION When increased retention is required IRM cement with either sandblasted or milled surface could be used and when retrievability is required cements of choice could be either TempBond or ImProv.
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Affiliation(s)
- S Varalakshmi Reddy
- Professor & HOD, Department of Prosthodontics, MNR Dental College & Hospital , Sangareddy, Telangana, India
| | - M Sushender Reddy
- Senior Lecturer, Department of Prosthodontics, SVS Institute of Dental Sciences , Mahabubnagar, Telangana, India
| | - C Rajaneesh Reddy
- Reader, Department of Oral Surgery, KLR Lenora College of Dental Sciences , Rajanagaram, Rajamundry, Andhra Pradesh, India
| | - Padmaja Pithani
- Reader, Department of Prosthodontics, Sri Balaji Dental College , Moinabad,R.R Dist, Telangana, India
| | - Santosh Kumar R
- Reader, Department of Prosthodontics, AME'S Dental College , Raichur, Karnataka, India
| | - Ganesh Kulkarni
- Senior Lecturer, Department of Oral Pathology, Malla Reddy Institute of Dental Sciences , Suraram, Hyderabad, Telangana, India
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Nejatidanesh F, Savabi O, Ebrahimi M, Savabi G. Retentive Strength of Implant-Supported Base Metal Copings Over Short Metal Abutments Using Different Luting Agents and Surface Treatments. IMPLANT DENT 2014; 23:162-7. [DOI: 10.1097/id.0000000000000049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Farahnaz Nejatidanesh
- *Professor, Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran; Biomaterials Research Group, Isfahan University of Technology, Isfahan, Iran. †Professor, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran; Biomaterials Research Group, Isfahan University of Technology, Isfahan, Iran. ‡Assistant Professor, Department of Endodontics, School of Dentistry, Khorasgan Islamic Azad University, Isfahan, Iran. §Dental Student, Dental Students' Research Committee, School of Dentistry, Khorasgan Islamic Azad University, Isfahan, Iran
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Sahu N, Lakshmi N, Azhagarasan NS, Agnihotri Y, Rajan M, Hariharan R. Comparison of the effect of implant abutment surface modifications on retention of implant-supported restoration with a polymer based cement. J Clin Diagn Res 2014; 8:239-42. [PMID: 24596785 DOI: 10.7860/jcdr/2014/7877.3931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 11/30/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND In cement-retained implant-supported restoration it is important to gain adequate retention of definitive restoration as well as retrievability of prosthesis. The surface of the abutment, alloy of the restoration and the type of cement used influences the retention of the restoration. There is a need to analyze the influence of surface modifications of abutments on the retentive capabilities of provisional implant cements. PURPOSE OF STUDY To compare the effect of implant abutment surface modifications on retention of implant-supported restoration cemented with polymer based cement. MATERIALS AND METHOD Thirty solid titanium implant abutments (ADIN), 8mm height, were divided into 3 groups. Ten abutments with retentive grooves (Group I) as supplied by the manufacturer, Ten abutments milled to 20 taper circumferentially (Group II), and Ten abutments milled and air-abraded with 110 μm aluminum oxide (Group III) were used in this study. Ni-Cr coping were casted for each abutment and polymer based cement was used to secure them to the respective abutments. Using a universal testing machine at a crosshead speed of 0.5 cm/minute, tensile bond strength was recorded (N). RESULTS Mean tensile bond strength of Group I, II and III were found to be 408.3, 159.9 and 743.8 Newton respectively. The values were statistically different from each other (p<0.001). CONCLUSION Abutments with milled and sandblasted surface provide the highest retention followed by abutments with retentive grooves and then by abutments with milled surface when cast copings were cemented to implant abutments with polymer based cement. CLINICAL IMPLICATIONS Retention of restoration depends on the surface of the abutment as well as the luting agents used. Incorporation of retentive grooves or particle abrasion can enhance retention especially in situation of short clinical crown.
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Affiliation(s)
- Nabaprakash Sahu
- Assistant Professor, Department of Prosthodontics, HiTech Dental College & Hospital , Bhubaneswar, India
| | - Namratha Lakshmi
- Assistant Professor, Department of Prosthodontics, HiTech Dental College & Hospital , Bhubaneswar, India
| | - N S Azhagarasan
- Professor & Head, Department of Prosthodontics, Ragas dental College & Hospital , Chennai, India
| | - Yoshaskam Agnihotri
- Assistant Professor, Department of Conservative dentistry & Endodontics, HiTech Dental College & Hospital , Bhubaneswar, India
| | - Manoj Rajan
- Professor, Department of Prosthodontics, Ragas dental college & Hospital , Chennai, India
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Pinelli LAP, Fais LMG, Ricci WA, Reis JMSN. In vitro comparisons of casting retention on implant abutments among commercially available and experimental castor oil-containing dental luting agents. J Prosthet Dent 2013; 109:319-24. [PMID: 23684282 DOI: 10.1016/s0022-3913(13)60308-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
STATEMENT OF PROBLEM Although cement-retained implant prostheses are widely used, the quantification of optimal retention remains controversial, and new dental luting agents should be evaluated. PURPOSE The purpose of this study was to compare, in vitro, the casting retention on implant abutments after cementation with 3 commercially available luting agents and an experimental luting agent (castor oil polyurethane, COP) with variable weight percentages (wt%) of calcium carbonate (CaCO3). MATERIAL AND METHODS Seventy-two palladium-silver cast copings were fabricated and divided into 6 groups: Temp Bond interim cement (TB); zinc phosphate cement (ZP); Rely X ARC resin cement (RX); pure COP (COP); COP + 10% wt% CaCO3 filler (COP 10); and COP + 50% wt% CaCO3 filler (COP 50). After cementation, the specimens were stored in distilled water at 37°C for 24 hours and subjected to removal force tests in a universal testing machine (5 kN; 0.5 mm/min). Statistical analyses were performed with the Kruskal-Wallis and Student-Newman-Keuls tests (α=.05). RESULTS The median values of casting retention (N) were as follows: TB=57.20 ±10.4; ZP=343.56 ±50.3; RX=40.07 ±9.7; COP=258.98 ±41.4; COP 10=466.57 ±79.3; and COP 50=209.63 ±31.4. The Kruskal-Wallis test showed significant differences among the groups (P<.01). TB and RX had the lowest mean retention values; COP, COP 10, and COP 50 were equal to ZP, and COP 10 had the highest retention. CONCLUSIONS The casting retention on implant-abutments provided by COP was similar to that of copings cemented with zinc phosphate and may be influenced by the addition of calcium carbonate.
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Affiliation(s)
- Lígia A P Pinelli
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.
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Nejatidanesh F, Savabi O, Ebrahimi M, Savabi G. Retentiveness of implant-supported metal copings using different luting agents. Dent Res J (Isfahan) 2012; 9:13-8. [PMID: 22363357 PMCID: PMC3283971 DOI: 10.4103/1735-3327.92921] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: With regard to potential retrievability of cement-retained implant restorations, the retentive strength of the luting agents is critical. The aim of this study was to evaluate the retention values of implant-supported metal copings using different luting agents. Materials and Methods: Twenty ITI implant analogs and solid abutments of 5.5-mm height were embedded vertically in autopolymerizing acrylic resin blocks. Metal copings with a loop on the occlusal surface were fabricated using base metal alloy (Rexillium III). The copings were luted using eight cements with different retention mechanisms (Panavia F2.0, Fuji Plus, Fleck's, Poly F, Fuji I, Temp Bond, GC-free eugenol, and TempSpan) under static load of 5 kg (n=10). All specimens were incubated at 37°C for 24 hours, conditioned in artificial saliva for 7 days and thermocycled for 5000 cycles (5-55°C). The dislodging force was measured using a universal testing machine at a crosshead speed of 5 mm/min. Statistical analyses were performed using Kruskal-Wallis (α=0.05) and Mann-Whitney tests with Bonferroni correction (α=0.001). Results: Fuji Plus and TempSpan had the highest and the least mean retentive strength, respectively (320.97±161.47, 3.39±2.33). There was no significant difference between Fuji Plus, Fleck's, Ploy F, and Panavia F2.0. These cements were superior to provisional cements and Fuji I (P<0.001) which showed statistically same retentive strength. Conclusion: Within the conditions of this study, the resin modified glass ionomer, zinc phosphate, zinc polycarboxylate, and Panavia F2.0 had statistically the same retentive quality and are recommended for definitive cementation of single implant-supported restorations. The provisional cements and glass ionomer may allow retrievability of these restorations.
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Affiliation(s)
- Farahnaz Nejatidanesh
- Department of Prosthodontics and Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Biomaterials Research Group, Isfahan University of Technology, Isfahan, Iran
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Nejatidanesh F, Savabi O, Shahtoosi M. Retention of implant-supported zirconium oxide ceramic restorations using different luting agents. Clin Oral Implants Res 2011; 24 Suppl A100:20-4. [PMID: 22092303 DOI: 10.1111/j.1600-0501.2011.02358.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2011] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the retention value of implant-supported zirconium oxide ceramic copings using different luting agents. METHOD AND MATERIALS Twenty ITI solid abutments of 5.5 mm height and ITI implant analogs were mounted vertically into autopolymerizing acrylic resin blocks. Ninety zirconium oxide copings (Cercon, Degudent) with a loop on the occlusal portion were made. All samples were airborne particle abraded with 110 μm Al₂O₃ and luted using different types of luting agents: resin cements (Clearfil SA, Panavia F2.0, Fuji Plus), conventional cements (Fleck's, Poly F, Fuji I), and temporary cements (Temp Bond, GC free eugenol, TempSpan) with a load of 5 Kg. (N = 10) All copings were incubated at 37°C for 24 h and conditioned in artificial saliva for 1 week, and thermal cycled for 5000 cycles 5-55°C with a 30-s dwell time. The dislodging force of the copings along the long axis of the implant-abutment complex was recorded using universal testing machine with 5 mm/min crosshead speed. Data were subjected to Kruskal-Wallis (α = 0.05) and Mann-Whitney tests with Bonferroni step down correction (α = 0.001). RESULTS There was significant difference between the mean rank retention values of different luting agents (P < 0.001). The resin cements showed the highest retention (Clearfil SA, 203.49 ± 52.86; Fuji Plus, 190.61 ± 48.00; Panavia F 2.0, 172.16 ± 70.76 N). The conventional cements had more retention than the temporary cements and glass ionomer cement (P < 0.001). CONCLUSION The retention of zircona ceramic restorations, over ITI solid abutments may be influenced by the type of cement. The application of an MDP-containing resin and resin-modified glass ionomer luting agents increase the retentive value of implant-supported zirconium oxide restorations.
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Affiliation(s)
- Farahnaz Nejatidanesh
- Department of Prosthodontics and Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Al Hamad KQ, Al Rashdan BA, Abu-Sitta EH. The effects of height and surface roughness of abutments and the type of cement on bond strength of cement-retained implant restorations. Clin Oral Implants Res 2010; 22:638-44. [DOI: 10.1111/j.1600-0501.2010.02011.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Khaled Q Al Hamad
- Department of Prosthodontics, Faculty of Dentistry, Jordan University of Science & Technology, Irbid, Jordan.
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