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Bishti S, Homa M, Wolfart S, Tuna T. Pull-Off Forces on Implant-Supported Single Restorations by Sticky Food: An In Vitro Study. Clin Oral Implants Res 2024. [PMID: 39206743 DOI: 10.1111/clr.14355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 07/15/2024] [Accepted: 08/14/2024] [Indexed: 09/04/2024]
Abstract
OBJECTIVE To investigate the pull-off forces on implant-supported restorations caused by sticky food, to understand how much retention force cemented restorations must have to withstand chewing forces without unintentional retention loss. The influence of food type, restoration design, and surface treatment were investigated. MATERIAL AND METHODS Monolithic implant-supported CAD/CAM zirconia crowns were fabricated and divided into groups according to their design: no (NC), flat (FC) and high cusps (HC) and subdivided according to surface roughness: rough (r) and smooth (s) (n = 10/group). NC represented the control group. The crowns were fixed in a universal testing machine opposite to each other. Four sticky foods (caramel, fruit jelly, candy strips and licorice) and a resin crown remover were tested. These were heated (36.4°C), placed between the crowns and compressed, then tensile strength tests were performed. The maximum pull-off force was recorded (Newton [N]). Statistical analysis was performed using 3-way ANOVA. RESULTS The highest mean pull-off force among food samples was with caramel_HC_r (12.09 ± 1.26 N), whereas the lowest was with licorice_FC_s (3.21 ± 0.15 N). For the resin crown remover, a mean pull-off force of 55.41 ± 3.87 N was measured in the HC_r group. Both food type and crown design showed a significant influence on pull-off force (p < 0.001), whereas no significant effect was reported with different surface roughnesses (p = 0.344). CONCLUSION This study reported pull-off forces of up to 20 N between all-ceramic restorations caused by sticky food. The clinical implication of these findings is that a cemented implant-restoration must have a minimum retention force of 20 N to withstand unintentional displacement during function.
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Affiliation(s)
- Shaza Bishti
- Department of Prosthodontics and Biomaterials, RWTH Aachen University, Aachen, Germany
| | - Martin Homa
- Department of Prosthodontics and Biomaterials, RWTH Aachen University, Aachen, Germany
| | - Stefan Wolfart
- Department of Prosthodontics and Biomaterials, RWTH Aachen University, Aachen, Germany
| | - Taskin Tuna
- Department of Prosthodontics and Biomaterials, RWTH Aachen University, Aachen, Germany
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Maubach C, Rudolph H, Happe A, Luthardt RG, Kuhn K, Blender SM. Influence of the Composition of Provisional Luting Materials on the Bond Strength of Temporary Single-Tooth Crowns on Titanium Abutments. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4239. [PMID: 39274629 PMCID: PMC11396488 DOI: 10.3390/ma17174239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/11/2024] [Accepted: 08/12/2024] [Indexed: 09/16/2024]
Abstract
In addition to zinc oxide-based cements, resin-based materials are also available for temporary cementation. The aim of this in vitro study was to determine the influence of the different material compositions on temporary bonds. In nine test series (n = 30), temporary bis-acrylate single-tooth crowns were bonded onto prefabricated titanium abutments with nine different temporary luting materials. After simulating an initial (24 h, distilled water, 37 °C), a short-term (7 days, distilled water, 37 °C) and a long-term provisional restoration period (12h, distilled water, 37 °C; thermocycling: 5000 cycles) in subgroups (n = 10), the bond strength was examined using a combined tensile-shear test. Statistical analysis was performed by univariate analysis of variance or a non-parametric Kruskal-Wallis test, followed by post hoc tests. Of the three resin-based materials, two showed significantly higher bond strength values compared to all other materials (p < 0.001), regardless of the storage procedure. The resin-based materials were followed by eugenol-free and eugenol-containing zinc oxide materials. Significant intragroup differences were observed between the composite-based materials after all storage periods. This was only observed for some of the zinc oxide-based materials. The results show that under in vitro conditions, not only the composition of the temporary luting materials but also the different storage conditions have a significant influence on temporary bonds.
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Affiliation(s)
- Christina Maubach
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
| | - Heike Rudolph
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
| | - Arndt Happe
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
- Private Practice, 48143 Münster, Germany
| | - Ralph G Luthardt
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
| | - Katharina Kuhn
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
| | - Sarah M Blender
- Center of Dentistry, Department of Prosthetic Dentistry, Ulm University Hospital, 89081 Ulm, Germany
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Hendi A, Falahchai M, Sigaroodi SH, Asli HN. Comparison of marginal leakage and retentive strength of implant-supported milled zirconia and cobalt-chromium copings cemented with different temporary cements. Dent Res J (Isfahan) 2023; 20:117. [PMID: 38169570 PMCID: PMC10758385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 09/24/2023] [Accepted: 10/14/2023] [Indexed: 01/05/2024] Open
Abstract
Background Few studies assessed the effect of coping material (particularly milled metal copings) on the retentive strength of cements and reported contradictory results. Thus, this study aims to assess the marginal leakage and retentive strength of implant-supported milled zirconia and cobalt-chromium (Co-Cr) copings cemented with different temporary cements. Materials and Methods In this in vitro study, Zirconia and Co-Cr copings were fabricated on 100 straight titanium abutments. Each group of copings was divided into five subgroups (n = 10) for the use of different cements: permanent zinc-phosphate (ZP) cement, temporary zinc oxide eugenol cement (temp bond [TB]), calcium hydroxide-based temporary cement (Dycal [DC]), polymer-based eugenol-free acrylic-urethane temporary cement (Dentotemp [DT]), and methacrylate-based temporary cement (Implantlink [IL]). The retentive strength and marginal leakage of restorations were assessed. Data were analyzed by one-way ANOVA, Tukey, and Fisher's exact tests (α = 0.05). Results In the Co-Cr group, the retentive strength values (in Newtons) were as follows: ZP (411.40 ± 5.19) >DC (248.80 ± 5.01) >IL (200.10 ± 5.06) >DT (157.90 ± 5.19) >TB (98.50 ± 6.88). This order was as follows in the zirconia group: ZP (388.70 ± 5.35) >DC (226.60 ± 5.08) >IL (179.00 ± 3.71) >DT (136.00 ± 4.88) >TB (78.60 ± 3.50). All pairwise comparisons were statistically significant (P < 0.001). The difference in marginal leakage was not significant among the groups (P = 0.480). Conclusion The type of coping material and cement type significantly affected retentive strength, but not marginal leakage, of implant restorations. Milled Co-Cr copings showed higher retentive strength than zirconia copings, and ZP cement followed by DC yielded the highest retention.
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Affiliation(s)
- Amirreza Hendi
- Department of Prosthodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | - Mehran Falahchai
- Department of Prosthodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Hamid Neshandar Asli
- Department of Prosthodontics, Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran
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Mehta S, Kesari A, Tomar M, Sharma U, Sagar P, Nakum P, Rao K. An Evaluation of the Effectiveness of Various Luting Cements on the Retention of Implant-Supported Metal Crowns. Cureus 2023; 15:e41691. [PMID: 37575823 PMCID: PMC10413795 DOI: 10.7759/cureus.41691] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2023] [Indexed: 08/15/2023] Open
Abstract
Background and objective Cement-retained prostheses have replaced screw-retained prostheses as the preferred restoration in recent years in order to overcome the latter's limitations. In this study, four different luting cements were compared to evaluate their efficacy on the retention of cement-based metal crowns to implant abutments. Materials and methods In the right and left first molar regions, four implant analogs (Internal Hex, Adin Dental Implant Systems Ltd., Tel-Aviv, Israel) were screwed into epoxy resin casts (Araldite CY 230-1 IN, India) that were positioned perpendicular to the cast's plane. Four metal copings were created and cemented. Group A: polycarboxylate cement (DUR) (DurelonTM, 3M Espe, St. Paul, MN); Group B: PANAVIA™ F 2.0 dual-cure resin cement (Kuraray America, Inc., New York, NY); Group C: resin-modified glass ionomer (3M™ RelyX™ Luting, 3M Espe); and Group D: non-eugenol temporary resin cement (Kerr-Temp, KaVo Kerr, Brea, CA) were used to cement crowns. To check the retention capacity, samples were put through a pull-out test on an Instron universal testing machine (TSI‑Tecsol, Bengaluru, India) with a crosshead speed of 0.5 mm/min. Each coping's de-cementing load was noted, and average values for every sample were computed and statistically analyzed. Results The findings demonstrated that non-eugenol temporary resin implant cement has the lowest retention value at 138.256 N, followed by resin-modified glass ionomer cement at 342.063 N, polycarboxylate luting cement at 531.362 N, and resin cement at 674.065 N. The average difference in retentive strength across all four groups was statistically very significant (p=0.001). Conclusion Based on our findings, non-eugenol temporary resin implant cement enables simple retrievability of the prosthesis in the event of a future failure and is appropriate for implant restorations with cement retention. Also, cements made of polycarboxylate and resin have the highest retention values.
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Affiliation(s)
- Surbhi Mehta
- Prosthodontics and Crown & Bridge, Inderprastha Dental College & Hospital, Ghaziabad, IND
| | - Anubhav Kesari
- Prosthodontics and Crown & Bridge, Subharti Dental College, Meerut, IND
| | - Mohit Tomar
- Prosthodontics and Crown & Bridge, Inderprastha Dental College & Hospital, Ghaziabad, IND
| | - Urvashi Sharma
- Prosthodontics and Crown & Bridge, Smile Carve Dental Clinic, Jaipur, IND
| | - Preeti Sagar
- Prosthodontics and Crown & Bridge, Homi Bhabha Cancer Hospital & Research Center-Muzaffarpur (A Unit of Tata Memorial Hospital, Mumbai), Muzaffarpur, IND
| | - Pooja Nakum
- Oral Surgery, Goenka Research Institute of Dental Science, Gandhinagar, IND
| | - Kumuda Rao
- Oral Medicine and Radiology, AB Shetty Memorial Institute of Dental Sciences - Nitte (Deemed to be University), Mangalore, IND
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Dehno SMS, Giti R, Kalantari MH, Mohammadi F. The effects of provisional resin cements on the color and retentive strength of all-ceramic restorations cemented on customized zirconia abutments. PLoS One 2022; 17:e0262582. [PMID: 35041706 PMCID: PMC8765607 DOI: 10.1371/journal.pone.0262582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/30/2021] [Indexed: 11/21/2022] Open
Abstract
This study aimed to evaluate the effects of two types of provisional resin cements on the color and retentive strength of two different all-ceramic restorations cemented onto customized zirconia abutments. Forty-two crowns were made of monolithic zirconia and lithium disilicate ceramics (n = 21 per group) and cemented on customized zirconia abutments by using two provisional resin cements of TempBond Clear and Implantlink Semi, and TempBond serving as the control (n = 7 per cement subgroup). The specimens’ color was measured before and after cementation and after thermocycling. The color difference was calculated by using CIEDE2000 formula (ΔE00). The tensile force was applied to assess the retentive strength. Kruskal-Wallis, Dunn’s post-hoc, and Mann-Whitney non-parametric tests were used to compare ΔE00(1) and ΔE00(2) and two-way ANOVA followed by one-way ANOVA and Tukey’s HSD post hoc test and T-test were used to compare retentive strength between subgroups. In the lithium disilicate group, ΔE00 of the control subgroup (TempBond) was significantly higher than that of Implantlink Semi cements subgroup (P = 0.001). But, in the monolithic zirconia group, ΔE00 of the control subgroup (TempBond) was significantly higher than that of Implantlink Semi (P = 0.020) and TempBond Clear cements (P = 0.007). In the monolithic zirconia group, the control subgroup (TempBond) was significantly more retentive than TempBond Clear (P = 0.003) and Implantlink Semi cement (P = 0.001). However, in the lithium disilicate group, Implantlink Semi cement was significantly more retentive than TempBond Clear (P = 0.019) and TempBond (control) (P = 0.001). The final color of both restorations was significantly affected by the provisional resin cement type. The retentive strength was influenced by both the type of cement and ceramic.
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Affiliation(s)
- Seyede Mina Salehi Dehno
- Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Rashin Giti
- Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
- * E-mail:
| | - Mohammad Hassan Kalantari
- Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
| | - Farhad Mohammadi
- Department of Pharmaceutics, School of Pharmacy, Shahid Sadoughi University of Medical Sciences and Health Care Services, Yazd, Iran
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Müller L, Rauch A, Reissmann DR, Schierz O. Impact of cement type and abutment height on pull-off force of zirconia reinforced lithium silicate crowns on titanium implant stock abutments: an in vitro study. BMC Oral Health 2021; 21:592. [PMID: 34798850 PMCID: PMC8603517 DOI: 10.1186/s12903-021-01958-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 11/05/2021] [Indexed: 12/04/2022] Open
Abstract
Background Pull-off forces of cement-retained zirconia reinforced lithium silicate (ZLS) in implant-supported single crowns on stock titanium abutments with respect to abutment height and implant cement were evaluated and compared. Methods Pull-off force of ZLS crowns on stock titanium abutments was evaluated concerning dental cement and abutment height. A total sample size of 64 stock abutments with heights of 3 mm (n = 32) and 5 mm (n = 32) was used. The ZLS crowns were cemented with four different types of cement (one temporary, two semi-permanent, and one permanent). After cementation, water storage, and thermocycling each sample was subjected to a pull-off test using a universal testing machine.
Results The temporary cement showed the least pull-off force regardless of abutment height (3/5 mm: means 6 N/23 N), followed by the semi-permanent methacrylate-infiltrated zinc oxide cement (28 N/55 N), the semi-permanent methacrylate-based cement (103 N/163 N), and the permanent resin composite cement (238 N/820 N). Results of all types of cement differed statistically significantly from each other (p ≤ .012). The type of implant cement has an impact on the pull-off force of ZLS crowns and titanium abutments. Conclusions Permanent cements present higher retention than semi-permanent ones, and temporary cements present the lowest values. The abutment height had a subordinate impact.
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Affiliation(s)
| | - Angelika Rauch
- Department of Prosthodontics and Materials Science, University of Leipzig, Liebigstrasse 12, 04107, Leipzig, Germany
| | - Daniel R Reissmann
- Department of Prosthetic Dentistry, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Oliver Schierz
- Department of Prosthodontics and Materials Science, University of Leipzig, Liebigstrasse 12, 04107, Leipzig, Germany.
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Dähne F, Meißner H, Böning K, Arnold C, Gutwald R, Prause E. Retention of different temporary cements tested on zirconia crowns and titanium abutments in vitro. Int J Implant Dent 2021; 7:62. [PMID: 34282495 PMCID: PMC8289925 DOI: 10.1186/s40729-021-00349-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/22/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose The aim of the present study was to examine the retention force of monolithic zirconia copings cemented with various temporary cements on implant abutments in vitro. Methods Sixty exercise implants with pre-screwed implant abutments were embedded in resin. Subsequently, 60 CAD/CAM manufactured zirconia copings were divided into three main groups [Harvard Implant Semi-permanent (HAV), implantlink semi Forte (IMP), Temp Bond NE (TBNE)]. The zirconia copings were cemented on the implant abutments and loaded with 35 N. Specimens were stored in distilled water (37 °C) for 24 h. Half of the test specimens of each group were subjected to a thermocycling (TC) process. Retention force was measured in a universal testing machine. Using magnifying glasses, the fracture mode was determined. Statistical analysis was performed applying the Kruskal-Wallis test, the post hoc test according to Dunn-Bonferroni and a chi-square test of independence. Results Without TC, IMP showed the highest retention of the three temporary luting agents (100.5 ± 39.14 N). The measured retention forces of IMP were higher than those of HAV (45.78 ± 15.66 N) and TBNE (61.16 ± 20.19 N). After TC, retention was reduced. IMP showed the greatest retentive strength (21.69 ± 13.61 N, three fail outs). HAV and TBNE showed pull-off forces of similar magnitude (17.38 ± 12.77 N and 16.97 ± 12.36 N, two fail outs). The fracture mode analysis showed different results regarding the tested cements before and after TC (facture type before/after TC): IMP (III+II/III), HAV (I/II) and TBNE (III/III). There were clear differences of the fracture modes regarding the examination before and after TC. Conclusions Within the limits of this study, IMP showed the highest pull-off forces under the chosen test conditions. All three temporary luting agents showed lower retention forces after TC. Retention values in the individual cement classes were very heterogeneous. Easy cement removal in the crown lumen favours the dominance of adhesive cement fractures on the abutment and adhesive/cohesive cement fractures on the abutment with HAV appears advantageous in case of recementation of the superstructure.
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Affiliation(s)
- Felix Dähne
- Department of Oral and Plastic Maxillofacial Surgery, University Hospital Halle, Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06120, Halle, Germany
| | - Heike Meißner
- Department of Prosthodontics, Carl Gustav Carus Faculty of Medicine, University of Technology, Fetscherstrasse 74, 01307, Dresden, Germany
| | - Klaus Böning
- Department of Prosthodontics, Carl Gustav Carus Faculty of Medicine, University of Technology, Fetscherstrasse 74, 01307, Dresden, Germany
| | - Christin Arnold
- Department of Prosthodontics, School of Dental Medicine, Martin-Luther-University, Magdeburger Str. 16, 06112, Halle, Germany
| | - Ralf Gutwald
- Faculty of Medicine/Dentistry, Danube Private University (DPU), Steiner Landstraße 124, 3500, Krems-Stein, Austria
| | - Elisabeth Prause
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, University Charité Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
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Dudley J. Restoration of converging implants: Restorative complexity to facilitate retrievability. J Indian Prosthodont Soc 2020; 20:436-442. [PMID: 33487973 PMCID: PMC7814683 DOI: 10.4103/jips.jips_258_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/29/2020] [Accepted: 09/25/2020] [Indexed: 12/03/2022] Open
Abstract
Implant treatment should be restoratively driven, however at times, ideal implant positioning may be sacrificed for surgical convenience at the expense of restorative complexity. A prosthesis incorporating a novel design was constructed to restore two converging implants placed in close proximity utilizing standard implant impression componentry and simple clinical stages. As the use of angulated screw channel technology was not possible, a customized cast “rest” abutment and overlying telescopic crown was fabricated that facilitated access for oral hygiene and retrievability as required. The complexity of the case design was transferred to the laboratory phases of construction. The case presented a satisfactory clinical outcome for an initially challenging implant presentation and reinforced the need to work closely with the laboratory technician.
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Affiliation(s)
- James Dudley
- Department of Prosthodontics, Adelaide Dental School, The University of Adelaide, Adelaide, Australia
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