Combined soft lithographic transfer-printing and patterning method of highly fluorinated polymers as a facile surface treatment protocol

2017 ◽  
Vol 134 (32) ◽  
pp. 45184 ◽  
Author(s):  
Da-Hyeok Lee ◽  
Seok-Heon Jung ◽  
O Jun Kwon ◽  
Myoung-Soo Kim ◽  
Jin-Seok Park ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Treatment Protocol ◽  
Transfer Printing ◽  
Fluorinated Polymers

Surface treatment-assisted switchable transfer printing on polydimethylsiloxane films

2016 ◽  
Vol 4 (16) ◽  
pp. 3467-3476 ◽  
Author(s):  
Juanjuan Wang ◽  
Jixun Xie ◽  
Chuanyong Zong ◽  
Xue Han ◽  
Haipeng Ji ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Surface Oxidation ◽  
Transfer Printing ◽  
Pdms Stamp ◽  
Polydimethylsiloxane Films

Switchable transfer printing with different “soft/hard” combinations of the PDMS stamp and substrate assisted by surface oxidation.

scholarly journals Effect of several repair techniques on the bond strength between composite resin and degraded Y-TZP ceramic

2018 ◽  
Vol 21 (4) ◽  
pp. 377
Author(s):  
Vinícius Felipe Wandscher ◽  
Luana Brondani ◽  
Gabriel Kalil Rocha Pereira ◽  
Renata Marques De Melo
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Treatment Protocol ◽  
Acrylic Resin ◽  
Silica Coating ◽  
Cohesive Fracture ◽  
Hydrothermal Degradation

<p><strong>Objective:</strong> To evaluate the bond strength of different repair treatments for composite resin to aged Y-TZP ceramics.  <strong>Material and Methods:</strong> Zirconia blocks were cut into smaller specimens, sintered according to manufacturer’s recommendations (final dimensions of 4×4×3 mm), and randomly allocated into nine groups (n=15) according to the surface treatment and presence/absence of aging of the substrate (subjected to low-temperature degradation - LTD), as follows: without LTD (Control: without treatment; TBS: tribochemical silica coating + silane + adhesive); with LTD (Control-LTD: without treatment; TBS-LTD: TBS with hydrothermal degradation; MoS-LTD: Monobond S + adhesive; MoP-LTD: Monobond Plus + adhesive; MZP-LTD: Metal/Zirconia Primer + adhesive; USB-LTD: Single Bond Universal; AP-LTD: Alloy primer + adhesive). LTD was simulated in an autoclave (134 °C, 2 bar, 5 h). The ceramic blocks were embedded in PVC cylinders with a self-curing acrylic resin; each surface treatment protocol was performed; a composite resin cylinder (Æ: 3.25 mm and height: 3 mm) was then build-up using split metallic matrices. All the specimens were aged (thermocycling + storage in water for 90 days) and subjected to the shear bond strength test using a universal testing machine (1 mm/min). The failure mode was classified into four types: adhesive, composite resin cohesive fracture, ceramic cohesive fracture, and mixed. The bond strength values were subjected to Mann–Whitney test. <strong>Results:</strong> Only air-abraded samples (TBS and TBS–LTD) survived thermocycling. More than 80% of the samples of the other groups presented pre-test failures. TBS groups presented higher values of bond strength (3.94) compared to TBS-LTD (0.96). The predominant type of failure for the surviving samples were adhesive. <strong>Conclusion:</strong> Air particle abrasion is mandatory to improve the bond strength of the Y-TZP substrate; an aged substrate presents an even more unfavorable scenario for adhesion.</p><p><strong>Keywords</strong></p><p> Dental prosthesis repair; Hydrothermal degradation; Zirconia; Shear bond strength; Sandblasting.</p><p> </p>

Conservative Implant Removal for the Analysis of the Cause, Removal Torque, and Surface Treatment of Failed Nonmobile Dental Implants

2016 ◽  
Vol 42 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Eduardo Anitua ◽  
Alia Murias-Freijo ◽  
Mohammad Hamdan Alkhraisat
Keyword(s):  
Surface Treatment ◽  
Soft Tissues ◽  
Treatment Protocol ◽  
Primary Stability ◽  
Postoperative Recovery ◽  
Implant Surface ◽  
Removal Torque ◽  
Advanced Stages ◽  
Lower Torque ◽  
Plasma Sprayed

This study was performed to study the effect of implant surface treatment on the cause and removal torque of failed nonmobile implants. Implant explantation was achieved by the application of countertorque at the implant–bone interface. The explantation socket was examined carefully and curetted to remove any granulation tissue. Immediate implant placement was accomplished when primary stability could be achieved. Eighty-one patients were treated according to the described treatment protocol for the explantation of 158 nonmobile implants in the maxilla and the mandible. The patient's mean age was 62 ± 11 years. The main cause of implant explantation was peri-implantitis (131 implants; 82.9%) followed by malpositioning of the implants (22 implants; 13.9%). The explantation of 139 implants at 146 ± 5 Ncm was performed without the need for trephine bur. However, the use of trephine burs to cut into the first 3 to 4 mm was necessary in 19 explantations, and the removal torque was 161 ± 13 Ncm. All titanium plasma-sprayed implants were removed due to peri-implantitis at a significantly lower torque when compared to acid-etched, particle-blasted, and oxidized implants. The postoperative recovery of the patients was uneventful and the conservation of the available hard and soft tissues was successfully achieved. The protocol followed in this study could constitute a real alternative to other traumatic technique for the removal of failed implants and advanced stages of peri-implantitis. The type of implant surface treatment could influence the value of removal torque and the occurrence of peri-implantitis.

scholarly journals Effect of Surface Treatments on the Flexural Strength of HeatPressed Zirconia Reinforced Lithium Silicate Ceramic and HeatPressed Lithium Disilicate Ceramic

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Adnan Hakim
Keyword(s):  
Flexural Strength ◽  
Surface Treatment ◽  
Testing Machine ◽  
Treatment Protocol ◽  
Lithium Disilicate ◽  
Ceramic Materials ◽  
Surface Treatments ◽  
Untreated Group ◽  
Lithium Silicate ◽  
Effect Of Surface

Objective: To compare the flexural strength of heat-pressed zirconia-reinforced lithium silicate (Celta Press) with that of heatpressed lithium disilicate (IPS e.max Press) and to evaluate the effect of surface treatments. Materials and Methods: Sixty-four specimens, with dimensions of 14.5 x 12.5 mm and 1.5 mm thickness, were fabricated using the lost-wax heat press technique and were divided into two groups: Group 1, Celta Press and Group 2, IPS e.max Press. Each group had four subgroups according to the surface treatment protocols: No treatment (A); Polished (B); Glazed (C), and Polished and Glazed (D). The specimens’ flexural strength was calculated by a universal testing machine in MPa. Results: IPS e.max Group D, showed the greatest flexural strength (374.22 ± 87.35MPa), while Celtra Press Group C, had the lowest flexural value (164.10 ± 51.97MPa). A two-way ANOVA indicated that IPS e.max exhibited statistically significantly greater flexural strength than Celtra Press. Tukey’s HSD test revealed that the polished and glazed group displayed greater flexural strength than the untreated group. Conclusion: IPS e.max Press showed greater flexural strength than Celtra Press among all groups. The combination of a polished and glazed surface produced greater flexural strength than the untreated group. Clinical Significance: With newer dental ceramic materials constantly emerging, there is a need to evaluate their mechanical properties and provide clinical recommendations. The aim of this in vitro study is to compare the flexural strength of two highly esthetic ceramic materials, Celtra Press and IPS e.max Press, and to offer some guidelines regarding their surface treatment protocol.

Two-Year Follow-Up of Self-Etching Ceramic Primer as Surface Treatment for Feldspathic Veneers: A Clinical Case Review

2021 ◽  
Author(s):  
AR Nascimento ◽  
MB Mantovani ◽  
LCdO Mendonça ◽  
J Vesselovcz ◽  
RR Pacheco ◽  
...  
Keyword(s):  
Case Report ◽  
Surface Treatment ◽  
Hydrofluoric Acid ◽  
Clinical Case ◽  
Clinical Performance ◽  
Treatment Protocol ◽  
Glass Ceramics ◽  
Case Review ◽  
Carious Lesions

SUMMARY The two-step approach of applying hydrofluoric acid followed by silane is deemed the goldstandard surface treatment protocol before bonding to glass ceramics. Given hydrofluoric acid is a toxic conditioning agent and with the intention to simplify this step, the dental company Ivoclar Vivadent (Schaan, Lietchtenstein) released a self-etching ceramic primer, Monobond Etch & Prime in 2015, claiming that hydrofluoric acid and silane application would no longer be required prior to luting glass ceramics. Therefore, this clinical case report and retrospective analysis describes the replacement of unsatisfactory anterior veneers due to clinical failures for new feldspathic glass ceramic veneers, using the aforementioned self-etching ceramic primer. After two years, feldspathic glass ceramics presented satisfying clinical performance with absence of debonding, tooth sensitivity, recurrent carious lesions, or marginal infiltration.

Treatment Fidelity Procedures for an Aphasia Intervention Within a Randomized Controlled Trial: Design, Feasibility, and Results

2020 ◽  
Vol 29 (1S) ◽  
pp. 412-424
Author(s):  
Elissa L. Conlon ◽  
Emily J. Braun ◽  
Edna M. Babbitt ◽  
Leora R. Cherney
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Treatment Protocol ◽  
Treatment Fidelity ◽  
Protocol Adherence ◽  
Study Condition ◽  
Randomized Controlled ◽  
Aphasia Therapy ◽  
Percent Accuracy ◽  
Over Time

Purpose This study reports on the treatment fidelity procedures implemented during a 5-year randomized controlled trial comparing intensive and distributed comprehensive aphasia therapy. Specifically, the results of 1 treatment, verb network strengthening treatment (VNeST), are examined. Method Eight participants were recruited for each of 7 consecutive cohorts for a total of 56 participants. Participants completed 60 hr of aphasia therapy, including 15 hr of VNeST. Two experienced speech-language pathologists delivered the treatment. To promote treatment fidelity, the study team developed a detailed manual of procedures and fidelity checklists, completed role plays to standardize treatment administration, and video-recorded all treatment sessions for review. To assess protocol adherence during treatment delivery, trained research assistants not involved in the treatment reviewed video recordings of a subset of randomly selected VNeST treatment sessions and completed the fidelity checklists. This process was completed for 32 participants representing 2 early cohorts and 2 later cohorts, which allowed for measurement of protocol adherence over time. Percent accuracy of protocol adherence was calculated across clinicians, cohorts, and study condition (intensive vs. distributed therapy). Results The fidelity procedures were sufficient to promote and verify a high level of adherence to the treatment protocol across clinicians, cohorts, and study condition. Conclusion Treatment fidelity strategies and monitoring are feasible when incorporated into the study design. Treatment fidelity monitoring should be completed at regular intervals during the course of a study to ensure that high levels of protocol adherence are maintained over time and across conditions.

Maximizing Outcomes in Group Treatment of Aphasia: Lessons Learned From a Community-Based Center

2014 ◽  
Vol 24 (3) ◽  
pp. 100-105 ◽  
Author(s):  
Darlene Williamson
Keyword(s):  
Group Treatment ◽  
Treatment Protocol ◽  
Lessons Learned ◽  
Group Program ◽  
Community Based ◽  
Multiple Treatment ◽  
Use Of Technology ◽  
Communication Impairments ◽  
Treatment Settings

Given the potential of long term intervention to positively influence speech/language and psychosocial domains, a treatment protocol was developed at the Stroke Comeback Center which addresses communication impairments arising from chronic aphasia. This article presents the details of this program including the group purposes and principles, the use of technology in groups, and the applicability of a group program across multiple treatment settings.

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