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Madiwal V, Rajwade J. Silver-deposited titanium as a prophylactic 'nano coat' for peri-implantitis. NANOSCALE ADVANCES 2024; 6:2113-2128. [PMID: 38633042 PMCID: PMC11019494 DOI: 10.1039/d3na00898c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/06/2024] [Indexed: 04/19/2024]
Abstract
Dental implant failures caused by bacterial infections are a significant concern for dental implantologists. We modified the titanium surface by depositing silver (Ti-Ag) using direct current (DC) sputtering and confirmed the formation of a 'nano coat' by X-ray photoelectron spectroscopy (XPS), surface profilometry and energy dispersive spectroscopy (EDS). Scanning electron microscopy (SEM) and atomic force microscopy (AFM) revealed the deposition of a uniform nano Ag thin film. A gradual increase in thickness was observed, and the film thickness (530 nm) at 5 min deposition time (Ti-Ag5) resulted in a reduction of the water contact angle (WCA, 15%) and an increase in surface energy (SFE, 22%) in comparison to the uncoated Ti surface. Using inductively coupled plasma-atomic emission spectroscopy (ICP-AES), the slow, steady release of Ag from the coating was observed over 21 days. The Ti-Ag5 surface exhibited excellent antibacterial activity against Streptococcus oralis, Streptococcus sanguinis, Aggregatibacter actinomycetemcomitans, and Porphyromonas gingivalis, which belonged to the yellow, purple, and red complexes, representing specific periodontal pathogens. Furthermore, we observed excellent cytocompatibility of Ag-deposited Ti towards MG-63 osteoblasts with no inhibitory effect on their proliferative potential. Quantitation of alkaline phosphatase (ALP) activity, mineralization efficiency, and osteogenesis-related gene expression of MG-63 cells over 21 days was suggestive of rapid osseointegration. Overall, the 'nano coat' of Ag on Ti is indeed a prophylactic against peri-implantitis, ensuring increased implant success.
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Affiliation(s)
- Vaibhav Madiwal
- Nanobioscience Group, Agharkar Research Institute G. G. Agarkar Road Pune 411004 India +91-020-025325131
- Savitribai Phule Pune University Homi Bhabha Road Pune 411007 India
| | - Jyutika Rajwade
- Nanobioscience Group, Agharkar Research Institute G. G. Agarkar Road Pune 411004 India +91-020-025325131
- Savitribai Phule Pune University Homi Bhabha Road Pune 411007 India
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Rauch A, Heinzmann W, Rosentritt M, Hahnel S, Schmidt MB, Fuchs F, Koenig A. Aging and Fracture Resistance of Implant-Supported Molar Crowns with a CAD/CAM Resin Composite Veneer Structure. J Clin Med 2023; 12:5997. [PMID: 37762937 PMCID: PMC10532374 DOI: 10.3390/jcm12185997] [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: 08/21/2023] [Revised: 09/10/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Chipping of implant-supported molar crowns (iSCs) is a frequently reported complication. This study aimed to investigate the in-vitro aging and fracture resistance of iSCs with a CAD/CAM resin composite veneer structure fabricated with the Rapid Layer Technology (RLT) approach. Eight iSCs per group were fabricated by using two different CAD/CAM resin composites (Shofu Block HC: SH; Grandio blocs: GB) for veneer structures, and zirconia (ZrO2), polyetheretherketone (PEEK), and cobalt-chromium (CoCr; control) as framework materials. The surfaces to be bonded were sandblasted, cleaned in an ultrasonic bath, and a coupling agent was applied. A self-adhesive resin luting composite was used to adhesively lute the veneer structures to the frameworks. The crowns were semi-permanently cemented to the abutments. After storage in deionized water, iSCs were loaded in a chewing simulator (TCML, 10,000 thermal cycles 5 °C to 55 °C for 20 s, 1.2 million, loading force 50 N). Four ZrO2 and one CoCr crown did not survive the TCML. The fracture force was determined after 24 h storage in deionized water and yielded values of ≥974 N. Lowest fracture forces were yielded in the PEEK-SH group in comparison to CoCr or ZrO2 groups (p ≤ 0.031). For identical framework materials, no significant influence of the veneering material was observed. All PEEK-GB frameworks fractured, and chipping occurred for ZrO2-SH and all CoCr frameworks. PEEK-SH and ZrO2-GB presented both chipping and framework fractures. Within the limitations of this in-vitro study, the RLT with a CAD/CAM resin composite veneer structure might be a promising approach to veneer iSCs. Yet, the choice of the CAD/CAM resin composite and of the framework material determine the fracture resistance.
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Affiliation(s)
- Angelika Rauch
- Department of Dental Prosthetics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.R.); (S.H.); (M.B.S.)
| | - Wendy Heinzmann
- Zahnärzte im Leipziger Westen, Karl-Heine-Straße 26, 04229 Leipzig, Germany;
| | - Martin Rosentritt
- Department of Dental Prosthetics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.R.); (S.H.); (M.B.S.)
| | - Sebastian Hahnel
- Department of Dental Prosthetics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.R.); (S.H.); (M.B.S.)
| | - Michael Benno Schmidt
- Department of Dental Prosthetics, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany; (M.R.); (S.H.); (M.B.S.)
| | - Florian Fuchs
- Department of Prosthetic Dentistry and Dental Materials Science, Leipzig University, Liebigstr. 10-12, Haus 1, 04103 Leipzig, Germany; (F.F.); (A.K.)
| | - Andreas Koenig
- Department of Prosthetic Dentistry and Dental Materials Science, Leipzig University, Liebigstr. 10-12, Haus 1, 04103 Leipzig, Germany; (F.F.); (A.K.)
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Cheng Y, Xiao C, Zhu Y, Chen Q, Zhang L, Zhang Y, Gao M, Li X, Zhou Y, Song G, Zhang T, Pei R. Three-year observations on the effect of different cusp inclinations on the restoration of short maxillary first molar implants: A randomized controlled trial. Front Physiol 2023; 13:992800. [PMID: 36685182 PMCID: PMC9845769 DOI: 10.3389/fphys.2022.992800] [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] [Received: 07/13/2022] [Accepted: 10/11/2022] [Indexed: 01/06/2023] Open
Abstract
Objective: To investigate the effect of different cusp inclination on short implant prosthesis of maxillary first molar after 3 years of weight-bearing in biology and mechanics. Methods: The clinical patients were randomly selected from the database and divided into four groups A, B, C, and D according to the cusp inclination of the maxillary first molar short implant restoration (4.8 mm × 8 mm, Dentium). 20 cases in each group. The cusp inclination was 10 degrees-15 degrees, 15 degrees-20 degrees, 20 degrees-25 degrees, 25 degrees-30 degrees. After 3 years of weight-bearing, cone beam computed tomography (CBCT) and Florida probe were used to measure and observe the height of alveolar bone (H), periodontal probing depth (PD) and modified sulcus bleeding index (MBI). Visual analogue scale (VAS) was used to evaluate the overall satisfaction of patients, and the mechanical complications of each group within 3 years of implant weight-bearing were counted. Results: The H and PD of group D were 1.09 ± 0.23 and 2.19 ± 0.11 respectively, which were significantly higher than those of group A, B and C (p < 0.05). There was no significant difference in MBI between groups A-D (p > 0.05). The VAS scores of group B and group C were 88.36 ± 5.12 and 88.70 ± 4.52 respectively, which were higher than those of group A and group D (p < 0.05). The incidence of food impaction, porcelain collapse and abutment loosening in group D were 40.0%, 25.0% and 15.0% respectively, which were higher than those in group B and C (p < 0.05). Conclusion: The risk of biological and mechanical complications increases after long-term weight-bearing of maxillary first molar short implant prostheses with high cusp inclination. The cusp inclination of short implant prostheses should be designed as low as 25 degrees.
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Affiliation(s)
- Yuye Cheng
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Cong Xiao
- Department of Orthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yu Zhu
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Qiuyan Chen
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Longbo Zhang
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yanshu Zhang
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Meiqin Gao
- Department of Orthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xinpei Li
- Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yan Zhou
- Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Guiqiang Song
- Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Tiecheng Zhang
- Department of Anesthesiology, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China
| | - Runsheng Pei
- Department of Prosthodontics, Nantong Stomatological Hospital, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, Jiangsu, China,*Correspondence: Runsheng Pei,
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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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