Gold nanoparticles (GNPs) are often used as colloidal carriers in numerous applications owing to their low-cost and size-controlled preparation well straightforward surface functionalization with thiol containing molecules forming self-assembling monolayers (SAM). The quantification of the ligand density such modified GNPs is technically challenging, yet utmost importance for quality control many applications. In this contribution, a new method determination coverage ligands proposed. It...

It was the aim of this 24-mo randomized controlled clinical trial to investigate whether survival a single median implant placed in edentulous mandible retain complete denture is not compromised by immediate loading. Secondary outcomes were differences prosthetic complications between loading principles. Each 158 patients who received an randomly assigned group ( n = 81) or delayed 77). Recall visits performed 1 mo after placement (for only group) and 1, 4, 12, 24 Nine implants failed group,...

Abstract Objectives Conventional dental implants inserted in the molar region of maxilla will reach into sinus maxillaris when alveolar ridge height is limited. When surgery performed without prior augmentation floor, primary stability implant important for successful osseointegration. This study aimed at identifying impact bone quality and quantity implantation site on a simulated bicortical placement. Materials methods In our vitro measurements, mineral density, total thickness overall...

Data evaluation is a crucial step when it comes to the determination of accurate and precise isotope ratios computed from transient signals measured by multi-collector–inductively coupled plasma mass spectrometry (MC-ICPMS) to, for example, laser ablation (LA). In present study, applicability different data strategies (i.e. 'point-by-point', 'integration' 'linear regression slope' method) computation 235U/238U in single particles LA-MC-ICPMS was investigated. The analyzed uranium oxide...

We present the application of nanosecond laser ablation (LA) coupled to a 'Nu Plasma HR' multi collector inductively plasma mass spectrometer (MC-ICP-MS) for direct analysis U isotope ratios in single, 10-20 μm-sized, U-doped glass particles. Method development included studies with respect (1) external correction measured particles, (2) applied carrier gas (i.e. Ar versus He) and (3) accurate determination lower abundant (236)U/(238)U 10(-5)). In addition, data processing procedure was...

The aim of this study was to evaluate a hands-on computer-assisted design/computer-assisted manufacture (CAD/CAM) module in preclinical dental course restorative dentistry. A controlled trial conducted by dividing class 56 third-year students Germany into and control groups; allocation the two groups depended on student schedules. Prior information about CAD/CAM-based restorations provided for all means lectures, preparation exercises, production gypsum casts prepared resin teeth. group (32...

Abstract Aim To evaluate the effects of (a) transcrestal sinus‐floor elevation (TSFE) and (b) residual bone height on long‐term implant survival. Materials Methods Chi‐squared t tests were used for descriptive comparison groups. Kaplan–Meier survival curves corresponding log‐rank to investigate over time. Multivariable Cox regressions performed total population experimental group. Results A 634 patients received 648 implants with TSFE, while 674 without TSFE served as controls. Thirty...

Abstract Purpose The objective of this work was to evaluate the effect prosthetic restoration on survival implants and incidence implant‐related complications. Material methods From a prospectively documented clinical study, 1569 placed in 630 patients (mean age 59.56 years) were evaluated. Selection criteria conventional loading protocol, with at least one follow‐up, minimum observation period 9 months. Implants that failed before excluded. sample included 1345 tissue‐level 104 bone‐level...

Abstract Objectives The purpose of this study was to investigate the adaptation behavior stomatognathic system after immediate loading (24 72 h surgery) two implants supporting mandibular overdentures, assessed on insertion and three months later. hypothesis that overdentures would significantly change masticatory performance muscle activity at both times. Material methods Thirty subjects (nine female, mean age 69.64 ± 11.81 years; 21 male, 68.67 7.41 years) who participated in a randomized...

This retrospective analysis was designed to compare the survival and success of dental implants in solely implant-supported, double crown-retained removable dentures (DCRDs) combined tooth-implant-supported DCRDs, due a lack data on latter.From 2002, patients were consecutively admitted for treatment at Department Prosthodontics, University Heidelberg. Surgical prosthodontic scheduled unscheduled visits recorded standardized documentation forms. Kaplan-Meier used estimate (survival without...

Over the years, there has been a strong consensus in dentistry that at least two implants are required to retain complete mandibular denture. It shown several clinical trials one single median implant can overdenture sufficiently well for up 5 years without failures, when delayed loading was used. However, other have reported conflicting results with part considerable failure rates immediate applied. Therefore it is purpose of current randomized trial test hypothesis midline an will result...

Abstract Purpose The study aims to evaluate survival and incidence of complications for pairs implants placed in the front region edentulous mandibles immediately loaded with either bar or L ocator attachments. Materials Methods Forty‐six patients (mean age 69.4 years at inclusion study; 73.9% male) received two interforaminal area symphysis. D older attachments, allocated randomly, were then attached immediately, both clips a framework fastened denture by dental technician within 72 hours....

To assess the frequency and amount of residual cement after attachment monolithic zirconia crowns to standard individualized ceramic abutments.Twenty patients (mean age 58.9 years at inclusion in study; 30% male) were randomized receive either a or an abutment on bone-level implant. Monolithic single attached abutments by use permanent glass-ionomer cement. Crowns fabricated with occlusal hole enable unscrewing abutment-crown complex. Immediately cementation, superstructures removed both...

To determine implant survival and success of four conventionally but initially asynchronously loaded implants in implant-supported overdentures for the edentulous maxilla, participants with opposing mandibular two-implant overdentures.Twenty-six received region maxillary canines molars. After healing, 24 these (mean age: 68.3 years) were randomly allocated to one two treatment groups, adapted overdenture was attached unsplinted cylindrical attachments. The other matrixes remained unattached...

Prosthetic management of thin alveolar ridges in the edentulous mandibles elderly patients, especially time loading, number implants needed, and patient expectations perception, is a challenge implant dentistry.Survival conventionally immediately loaded 2-piece reduced-diameter interforaminal region mandible supporting locator-analog attachments was evaluated. complications peri-implant hygiene were also studied, expectation subjective evaluation treatment documented.Twenty-five patients...

The aim of this multicenter single mandibular implant study was to compare the clinical outcome an immediately loaded placed in midline edentulous mandible with when closed healing and delayed loading is chosen. Here, patient recruitment period main reasons for exclusion were analyzed.Patient performed at nine German universities. Rather conservative inclusion criteria, including denture satisfaction, status, a psychologic symptom checklist, defined bone height posterior mandible, had be...

To investigate the long-term performance, over a period of up to 11 years, tooth-implant-supported and solely implant-supported double-crown-retained overdentures (DCRDs) for complete restoration jaw.Between 2002 2015, patients were consecutively enrolled in study at Heidelberg University Hospital's Department Prosthodontics. Scheduled unscheduled visits both documented on standardized forms. Kaplan-Meier curves used evaluate survival success DCRDs. Mixed effects Cox regression was identify...