Dentistry Commons^™

A Glassy Carbon Electrode Modified With Reduced Graphene Oxide And Gold Nanoparticles For Electrochemical Aptasensing Of Lipopolysaccharides From Escherichia Coli Bacteria, Mehrab Pourmadadi, Javad Shabani Shayeh, Meisam Omidi, Fatemeh Yazdian, Masoud Alebouyeh, Lobat Tayebi

School of Dentistry Faculty Research and Publications

An electrochemical aptasensor is described for the voltammetric determination of lipopolysaccharide (LPS) from Escherichia coli 055:B5. Aptamer chains were immobilized on the surface of a glassy carbon electrode (GCE) via reduced graphene oxide and gold nanoparticles (RGO/AuNPs). Fast Fourier transform infrared, X-ray diffraction and transmission electron microscopy were used to characterize the nanomaterials. Cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy were used to characterize the modified GCE. The results show that the modified electrode has a good selectivity for LPS over other biomolecules. The hexacyanoferrate redox system, typically operated at around 0.3 V (vs. Ag/AgCl) is used as …

Design Of A New 3d‐Printed Joint Plug, Lobat Tayebi, Zhanfeng Cui, Hua Ye

School of Dentistry Faculty Research and Publications

This paper introduces a kit of parts as a novel three‐dimensional (3D)–printed joint plug, in which each of the parts function cooperatively to treat cartilage damage in joints of the human body (e.g., hips, wrists, elbow, knee, and ankle). Three required and one optional parts are involved in this plug. The first part is a 3D‐printed hard scaffold (bone portion) to accommodate bone cells, and the second is a 3D‐printed soft scaffold (cartilage portion) overlying the bone portion to accommodate chondrocytes. The third part of joint plug is a permeable membrane, termed film, to cover the entire plug to provide …

Synthesis And Application Of Ce-Doped Tio2 Nanoparticles Loaded On Activated Carbon For Ultrasound-Assisted Adsorption Of Basic Red 46 Dye, Ebrahim Alipanahpour Dil, Mehrorang Ghaedi, Arash Asfaram, Fatemah Mehrabi, Ali Akbar Bazrafshan, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Ce was doped on TiO₂ nanoparticles (NPs), and this association was loaded on activated carbon (Ce-TiO₂-NPs-AC). The characterization was completed by FE-SEM, TEM, and XRD, and finally these NPs were used for the ultrasonic-assisted adsorption of Basic Red 46 (BR 46) from aqueous solution. An experimental model suggested by the central composite design (CCD)—as a branch of response surface methodology (RSM)—provides insight into the influence of variables, such as BR 46 concentration, pH, adsorbent mass, and sonication time, on BR 46 removal. Experimental results revealed that setting conditions at 25 mg L⁻¹ of BR 46, pH …

Conductive Nanofibrous Chitosan/Pedot:Pss Tissue Engineering Scaffolds, Ali Abedi, Mahdi Hasanzadeh, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Design of a proper scaffold is the first step in fabrication of a tissue engineering product, which should be able to support cellular growth in in vitro conditions. This study focuses on the fabrication and characterization of chitosan (CS) scaffolds containing PEDOT:PSS, a conductive polymer. The scaffold is primarily designed for cardiac tissue engineering, although it can be used for other applications too. Chitosan scaffolds containing 0.3, 0.6 and 1 wt% of PEDOT:PSS are fabricated through electrospinning. The structure and morphology of scaffolds are characterized by scanning electron microscopy (SEM), 3D Laser Measuring Microscopy and Fourier-transform infrared spectroscopy (FTIR). The …

Matrix Metalloproteinases And Temporomandibular Joint Disorder: A Review Of The Literature, Logan Herm, Ardit Haxhia, Flavio Camejo, Lobat Tayebi, Luis Eduardo Almeida

School of Dentistry Faculty Research and Publications

Temporomandibular disorders (TMD) are progressive degenerative disorders that affect the components of the temporomandibular joint (TMJ), characterized by pain and limitations in function. Matrix metalloproteinases (MMP) are enzymes involved in physiological breakdown of tissue that can have a pathological effect from an increase in activity during inflammation. A PubMed search of the current literature (within the past 10 years) was conducted to identify human studies involving matrix metalloproteinases activity in TMJ components of patients with TMD. Two separate searches results in 34 studies, six of which met inclusion criteria. Immunohistochemistry and gene analysis were used to evaluate MMP expression in …

A Graphene Based–Biomimetic Molecularly Imprinted Polyaniline Sensor For Ultrasensitive Detection Of Human Cardiac Troponin T(Ctnt), Meysam Karimi, Mohammad Rabiee, Mohammadreza Tahriri, Reza Salarian, Lobat Tayebi

School of Dentistry Faculty Research and Publications

In the present work, a biomimetic nano-molecularly imprinted polymer (N-MIP) electrode based on a graphene screen-printed electrode was developed for the ultrasensitive detection of cardiac troponin T (cTnT). The biomimetic cavities for targeted sensing for analyte were fabricated by the electropolymerization of conductive co-polymer matrix of aniline and carboxylated aniline on the graphene oxide (GO) electrode, in the presence template protein (cTnT for cardiac troponin T probe) by cyclic voltammetry. The surface characterization of the sensor was performed using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and scanning electron microscopy (SEM). The best biomimetic surface nanotexture was obtained at …

Self-Assembling Of Graphene Oxide On Carbon Quantum Dot Loaded Liposomes, Mohadeseh Hashemi, Javad Mohammadi, Meisam Omidi, Hugh D.C. Smyth, Bharadwaj Muralidharan, Thomas E. Milner, Amir Yadegari, Davoud Ahmadvand, Mohammad Shalbaf, Lobat Tayebi

School of Dentistry Faculty Research and Publications

This paper describes the design of stimuli-sensitive theranostic nanoparticles, composed of reduced graphene oxide (rGO) self-assembled on thermosensitive liposomes encapsulated doxorubicin (DOX) and carbon quantum dot (CQD) (CQD-DOX-rGO-Tlip). The rGO-Tlip particles have been observed to be flower-shaped objects. The thermoresponsive and theranostic potential of CQD-DOX-rGO-Tlips have been studied using differential scanning calorimetry (DSC), ultraviolet visible spectroscopy (UV–Vis), Raman spectroscopy and photoluminescent assays. The chemo-photothermal potential of rGO–Tlip on MD-MB-231 cells during NIR laser irradiation has been examined using MTT assay. Also, the ability of rGO–Tlip to be taken up by MD-MB-231 cells has been studied using confocal microscopy and flowcytometry. …

Gene Therapy In Rheumatoid Arthritis: Strategies To Select Therapeutic Genes, Mahdi Zavvar, Sara Assadiasl, Narjes Soleimanifar, Fatemeh Dadgar Pakdel, Kamal Abdolmohammadi, Yousef Fatahi, Mohsen Abdolmaleki, Hamed Baghdadi, Lobat Tayebi, Mohammad Hossein Nicknam

School of Dentistry Faculty Research and Publications

Significant advances have been achieved in recent years to ameliorate rheumatoid arthritis (RA) in animal models using gene therapy approaches rather than biological treatments. Although biological agents serve as antirheumatic drugs with suppressing proinflammatory cytokine activities, they are usually accompanied by systemic immune suppression resulting from continuous or high systemic dose injections of biological agents. Therefore, gene transfer approaches have opened an interesting perspective to deliver one or multiple genes in a target‐specific or inducible manner for the sustained intra‐articular expression of therapeutic products. Accordingly, many studies have focused on gene transferring methods in animal models by using one of …

Recent Advancements In Aptamer-Bioconjugates: Sharpening Stones For Breast And Prostate Cancers Targeting, Saeid Maghsoudi, Bahareh Taghavi Shahraki, Navid Rabiee, Ronak Afshari, Yousef Fatahi, Rassoul Dinarvand, Sepideh Ahmadi, Mojtaba Bagherzadeh, Mohammad Rabiee, Lobat Tayebi, Mohammadreza Tahriri

School of Dentistry Faculty Research and Publications

Breast and prostate cancers are common types of cancers with various strategies, such as chemotherapy and radiotherapy, for their therapy. Since these methods have undesired side effects and poor target affinity, neoteric strategies—known as aptamer-based smart drug delivery systems (SDDSs)—have been developed in recent years to overcome the obstacles of current treatment, and investigated for a clinical trial. The high affinity and versatility of aptamers for binding to the corresponding targets make them highly noticeable agents in the drug delivery domains. In addition to their exceptional benefits, aptamers are able to overcome tumor resistance because of their high selectivity and …

Billed And Paid Amounts For Preventive Procedures In Dental Medicaid, K. Wagner, Aniko Szabo, Elaye Okunseri, Christopher Okunseri

School of Dentistry Faculty Research and Publications

Objective:

To examine trends and variations in billed and paid amounts for preventive dental procedures by race/ethnicity, age, and sex in Wisconsin dental Medicaid.

Methods:

We analyzed data from the 2001 to 2013 Wisconsin Medicaid claims database for preventive dental procedures for children and adults. Billed and paid amounts for preventive dental procedures were aggregated over a visit and adjusted for inflation based on the Medical Care Consumer Price Index produced by the Bureau of Labor Statistics for 2013. Quantile regression was used to examine the trends over time and the effect of patient demographics.

Result:

At the 50th and …

Effect Of Biomimetic Mineralization On Enamel And Dentin: A Raman And Edx Analysis, Arndt Guentsch, Mina D. Fahmy, Contanze Wehrle, Sandor Nitzsche, Jürgen Popp, David C. Watts, Stefan Kranz, Christoph Krafft, Bernd W. Sigusch

School of Dentistry Faculty Research and Publications

Objective

To investigate the effect of an experimental biomimetic mineralization kit (BIMIN) on the chemical composition and crystallinity of caries-free enamel and dentin samples in vitro.

Methods

Enamel and dentin samples from 20 human teeth (10 for enamel; 10 for dentin) were divided into a control group without treatment and test samples with BIMIN treatment. Quantitative analysis of tissue penetration of fluoride, phosphate, and calcium was performed using energy-dispersive X-ray spectroscopy (EDX). Mineralization depth was measured by Raman spectroscopy probing the symmetric valence vibration near 960 cm⁻¹ as a marker for crystallinity. EDX data was statistically analyzed using …

Temperature And Ph-Responsive Nano-Hydrogel Drug Delivery System Based On Lysine-Modified Poly (Vinylcaprolactam), Fatemeh Farjadian, Somayeh Rezaeifard, Mahsa Naeimi, Sahar Ghasemi, Soliman Mohammadi-Samani, Mark E. Welland, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Background: Smart materials capable of responding to external stimuli are noteworthy candidates in designing drug delivery systems. In many of the recent research, temperature and pH have been recognized as the main stimulating factors in designing systems for anti-cancer drugs delivery systems.

Purpose: In this study, thermo and pH-responsive character of a nano-carrier drug delivery platform based on lysine modified poly (vinylcaprolactam) hydrogel conjugated with doxorubicin was assessed.

Methods: Poly (vinylcaprolactam) cross-linked with poly (ethyleneglycol) diacrylate was prepared via RAFT polymerization, and the prepared structure was linked with lysine through ring-opening. The anti-cancer drug doxorubicin, was linked to lysine moiety …

Effect Of Finish Line Design And Metal Alloy On The Marginal And Internal Gaps Of Selective Laser Melting Printed Copings, Adel Al Maaz, Geoffrey A. Thompson, Carl Drago, Hongseok An, David W. Berzins

School of Dentistry Faculty Research and Publications

Statement of problem

Selective laser melting (SLM) technology has been introduced for printing metal dental restorations from Co-Cr base alloys or Au-Pt high noble alloys. However, information regarding the fit of restorations fabricated by using this technique is limited.

Purpose

The purpose of this in vitro study was to determine the effect of 3 different finish line designs on the marginal and internal gaps of metal copings made from a base (Co-Cr), high noble (Au-Pd-Ag), and noble alloy (Co-Pd) by using the SLM technology.

Material and methods

Three Ivorine right maxillary central incisors were prepared with a chamfer, deep chamfer, …

Effect Of Heat-Treatment Time On Bending Properties Of Cobolt-Chromium Orthodontic Wires, Melanie Hammerbeck

Master's Theses (2009 -)

Different protocols appear in the literature with respect to heat-treating cobalt-chromium orthodontic wires. The objective was to determine the effect of variable heat-treatment time and method on the bending properties of CoCr wires. Two tempers of CoCr ‘Elgiloy’ wires (Rocky Mountain Orthodontics), blue (B) and yellow (Y), were heat-treated for different durations. The groups (n=20/group/temper) included: 1) as-received (control); 2) brush-flame; 3) 480oC for 5sec; 4) 480oC for 10min; 5) 480oC for 2hr; and 6) 480oC for 5hr. Wire segments were tested by a three-point bend test. Stiffness/flexural modulus, percent recovery, and force values at select deflections were statistically compared …

Efficacy Of Invisalign Attachments: A Retrospective Study, Theresa Karras

Master's Theses (2009 -)

Objective: To compare the efficacy of Invisalign’s (Align Technology, Inc., Santa Clara, CA) optimized and conventional attachments on rotational and extrusive tooth movements.Materials and Methods: Initial, predicted, and achieved digital dental models from 100 orthodontic patients were exported from Invisalign’s ClinCheck software as stereolithography (STL) files and subsequently imported into the Slicer CMF program (open source, version 4.7.0) for superimpositions on posterior teeth with no planned movement. Rotational and extrusive measurements for both optimized and conventional attachment types were made on 382 teeth from the superimposition of the initial and predicted models (“predicted movement”) and from the superimposed initial and …

Stimulus-Responsive Polymeric Nanogels As Smart Drug Delivery Systems, Sakineh Hajebi, Navid Rabiee, Mojtaba Bagherzadeh, Sepideh Ahmadi, Mohammad Rabiee, Hossein Roghani-Mamaqani, Mohammadreza Tahriri, Lobat Tayebi, Michael R. Hamblin

School of Dentistry Faculty Research and Publications

Nanogels are three-dimensional nanoscale networks formed by physically or chemically cross-linking polymers. Nanogels have been explored as drug delivery systems due to their advantageous properties, such as biocompatibility, high stability, tunable particle size, drug loading capacity, and possible modification of the surface for active targeting by attaching ligands that recognize cognate receptors on the target cells or tissues. Nanogels can be designed to be stimulus responsive, and react to internal or external stimuli such as pH, temperature, light and redox, thus resulting in the controlled release of loaded drugs. This “smart” targeting ability prevents drug accumulation in non-target tissues and …

Effects Of Dental Composite Resin Monomers On Dental Pulp Cells, Thomas R. Schneider, Roxan Hakami-Tafreshi, Alexandra Tomasino-Perez, Lobat Tayebi, Doug Lobner

School of Dentistry Faculty Research and Publications

Methacrylate monomers found in many dental materials cause toxicity to dental pulp cells but the mechanism of the toxicity is poorly understood. We used cultured human dental pulp cells to test the effects of three commonly used monomers; bisphenol-A-glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA), and triethyleneglycol dimethacrylate (TEGDMA). The order of toxicity was Bis-GMA>UDMA>TEGDMA. The toxicity correlated inversely with cystine uptake, with TEGDMA stimulating uptake and BisGMA and UDMA inhibiting uptake. Bis-GMA and UDMA induced oxidative stress, while TEGDMA did not. Toxicity correlated poorly with glutathione levels, as all compounds decreased cellular glutathione. TEGDMA is less toxic than …

Comparison Of Gingival Retraction Materials Using A New Gingival Sulcus Model, Marco Dederichs, Mina D. Fahmy, Harald Kuepper, Arndt Guentsch

School of Dentistry Faculty Research and Publications

Purpose

To investigate the pressure generated by different retraction materials using a novel gingival sulcus model.

Materials and Methods

A gingival sulcus model was made using a polymer frame filled with silicon. A pressure sensor and a sulcus‐fluid simulation were embedded into the silicon chamber to evaluate the pressure generated by different retraction materials. Six sizes of Ultrapak retraction cords (Ultradent, sizes #000 ‐ 3), 4 retraction pastes (Expazen, Expasyl, Acteon, Access Edge, Traxodent) and 2 retraction gels (Sulcus Blue, Racegel) were analyzed. The mean and median pressure, interquartile range, and standard deviation (SD) of n = 10 repeated measurements …

Bicyclic Peptides: Types, Synthesis And Applications, Shahrzad Ahangarzadeh, Mohammad M. Kanafi, Simzar Hosseinzadeh, Ahad Mokhtarzadeh, Mahmood Barati, Javad Ranjbari, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Bicyclic peptides form one of the most promising platforms for drug development owing to their biocompatibility, similarity and chemical diversity to proteins, and they are considered as a possible practical tool in various therapeutic and diagnostic applications. Bicyclic peptides are known to have the capability of being employed as an effective alternative to complex molecules, such as antibodies, or small molecules. This review provides a summary of the recent progress on the types, synthesis and applications of bicyclic peptides. More specifically, natural and synthetic bicyclic peptides are introduced with their different production methods and relevant applications, including drug targeting, imaging …

Prevalence Of Molar-Incisor Hypomineralization In Milwaukee, Wisconsin, Usa: A Pilot Study, Megan Davenport, Andrew D. Welles, Matina V. Angelopoulou, Cesar D. Gonzalez, Christopher Okunseri, Lori Barbeau, Naveen K. Bansal, Rodney Vergotine, Brian D. Hodgson

School of Dentistry Faculty Research and Publications

Purpose: This pilot study investigated the prevalence of Molar-Incisor Hypomineralization (MIH) in third-grade school children in Milwaukee Wisconsin, USA.

Methods: A convenience sample of third-grade school children in the Milwaukee Public School System (MPS) participated in the study. Calibrated examiners trained on the European Academy of Paediatric Dentistry (EAPD) MIH recommendations examined the children between December 1, 2014 and June 30, 2015. Children were examined at their schools using a flashlight and mirror after receiving consent from parents/caregivers and assent from each child. Findings were recorded onto a standardized form by one of five trained examiners. Summary statistics were calculated, …

An In Vitro Study Of Surface Alterations To Peek And Titanium And Its Effect Upon Human Gingival Fibroblasts, Maryam Gheisarifar

Master's Theses (2009 -)

Objective: Soft tissue attachment to different surfaces plays a pivotal role in long term success of dental implants. The aim of the current study was to evaluate viability and adhestion of human gingival fibroblasts (HGFs) upon specific surface modifications on different implant abutment materials. Material & Methods: A total of 150 specimens in 6 experimental groups were used: titanium alloy (Ti [smooth machined]), titanium laser-modified (TiL), PEEK (P [smooth machined]), PEEK laser-modified (PL), PEEK plasma treated (PP), PEEK laser and Plasma treated (PLP). The surface roughness (Sa), water contact angle (WCA), and X-ray photoelectron spectroscopy (XPS) were measured. Human gingival …

Injectable Gels With Potential Use In Endodontics, Maksim Montatskiy

Master's Theses (2009 -)

Objective: To formulate a thermoreversible hydrogel using methyl-cellulose, carbon dots and inorganic salts to achieve physiologically compatible gelation temperature; to test cytotoxic effects of formulation against dental pulp stem cells.Materials/Methods: A 5% w/v methylcellulose (MC) solution was prepared and equal volumes of NaCl aqueous solution were added to make various sodium chloride salt concentrations and reach the final MC concentration of 2.5%. Samples were analyzed using a shear rheometer to monitor complex shear viscosity as a function of temperature to arrive at onset gelation temperature closest to targeted temperature. Carbon dots were synthesized by thermal method using ammonium citrate …

Evaluation Of Accuracy Of Static Computer-Guided Implant Placement Compared With Partially-Guided Or Free-Hand Placement, Laxmi Sukhtankar

Master's Theses (2009 -)

Purpose: To evaluate precision and trueness of static computer-assisted implant surgery (sCAIS) in comparison with partially-guided and free-hand implant placement in vitro.Materials & Methods: The study was conducted on one hundred mandible replicas obtained from a cone beam computer tomography of a partially edentulous case for implant placement in mandibular right first molar site. First, the fully guided implant placement with different sleeve to bone distances (2mm = H2, 4mm = H4, 6mm= H6) was determined. Second, fully guided implant placement was compared with partially guided, and free implant placement. The achieved implant position was digitized and compared …

The Design And Physical Properties Of An Optimized Chitosan Hydrogel For Potential Use In Endodontics, Hunter Housley

Master's Theses (2009 -)

Introduction: The aim of this study was to synthesize an optimized chitosan/carbon dot hydrogel and measure its effects on the proliferation of dental pulp stem cells. Methods: 1.5% w/v chitosan hydrogel samples were fabricated with 300 mg/ml aqueous β-glycerol phosphate (β-GP) to create an optimized chitosan with a gelation onset temperature below 37°C. Spermidine-functionalized carbon dots (CDs) were added to test groups in concentrations of 25 µg/ml and 50 µg/ml. Complex shear viscosity of the prepared hydrogel samples was evaluated with a Kinexus pro+ shear rheometer (Malvern Panalytical). Samples were evaluated for cellular proliferation with dental pulp stem cells at …

The Influence Of Full Coverage Restorations On Pulp Vitality: A Ten-Year Retrospective Study, Abby Yavorek

Master's Theses (2009 -)

INTRODUCTION: The incidence of pulpal disease after delivery of a full-coverage crown has been previously described as between 2-19%. The objective of this study was to identify and analyze the factors that contribute to the incidence of NS-RCT after the delivery of single-unit full-coverage restorations. MATERIALS AND METHODS: Insurance claims from 88,409 crown placements in the Delta Dental of Wisconsin Insurance database were analyzed from the years 2008 to 2017. The Cox Regression model was used to analyze the effect of the predictor variables on the survival of the tooth. Untoward events were defined as NS-RCT, tooth extraction, retreatment of …

Comparison Of Power Versus Manual Toothbrush In Reducing Gingivitis, Keerthi Kamreddy

Master's Theses (2009 -)

The purpose of the present 4-week, parallel-arm, single-blinded, clinical study is to investigate the efficacy and safety of a new power toothbrush in comparison with a standard flat trim ADA approved manual brush. The primary objective of this study is to evaluate the efficacy of powered toothbrush on gingivitis reduction compared to a manual toothbrush. Secondary objectives of this study are to evaluate the effectiveness of plaque removal.Materials & Methods: The study was a single-blinded parallel arm randomized controlled interventional trial. Forty-six male and female subjects with gingivitis (32 female and 16 males) with a mean age of 26 …

Effect Of Different Implant Abutment Materials On Optical Properties Of Translucent Monolithic Zirconia Crowns, Nisha Patel

Master's Theses (2009 -)

Purpose: The purpose of this study was to evaluate the effect of implant abutment color on the final shade of monolithic translucent zirconia crowns. The null hypothesis was that abutment color or brand of zirconia would have no effect on color of monolithic translucent zirconia crowns.Material and methods: A maxillary right central incisor implant (Nobel Replace Trilobe RP) in a dentoform model was used to mill customized abutments of titanium, gold-anodized titanium, pink-anodized titanium, and zirconium dioxide. An A2 dentin shade polymethyl methacrylate abutment was used as a control. Four types of zirconia systems (BruxZir Anterior; Glidewell Laboratories, LAVA …

Association Of Food Insecurity With Early Childhood Caries, Matina V. Angelopoulou, S. D. Shanti, Cesar Gonzalez, Ashley Love, Jeffrey Chaffin

School of Dentistry Faculty Research and Publications

Objectives

The aim of this study was to examine the association of food insecurity on the prevalence of dental caries in preschool children.

Methods

Eighty-two children, aged 12-71 months old, from the Marquette University School of Dentistry Community South Clinic and their caregivers participated in this cross-sectional study. Following informed consent, parents completed the validated six-item US Department of Agriculture food insecurity questionnaire and questions regarding demographic information and family structure. Upon clinical examination caries was recorded using the decayed, missing, filled teeth (dmft) index based on the International Caries Detection and Assessment System criteria.

Results

The correlation between dmft …

The Effectiveness Of Different Attachment Systems Maxillary And Mandibular Implant Overdentures, Gary L. Stafford

School of Dentistry Faculty Research and Publications

Data sources Cochrane Oral Health's Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), Medline, Embase, the US National Institutes of Health Ongoing Trials Register (ClinicalTrials.gov) and the World Health Organization International Clinical Trials Registry Platform.

Study selection Randomised controlled trials (RCTs), including cross-over trials on maxillary or mandibular implant overdentures with different attachment systems with at least one-year follow-up were considered. There were no restrictions on language or date of publication.

Data extraction and synthesis Data were abstracted by four reviewers with risk of bias being assessed using the Cochrane tool. Data were combined using a fixed effects …

Effect Of Airborne-Particle Abrasion On 3-Dimensional Surface Roughness And Characteristic Failure Load Of Fiber-Reinforced Posts, Georgios Maroulakos, Michael W. Wanserski, Michelle M. Wanserski, Ethan J. Schuler, Colin P. Egan, Geoffrey A. Thompson

School of Dentistry Faculty Research and Publications

Statement of problem

Debonding is the most common complication of fiber-reinforced posts (FRPs). Airborne-particle abrasion (APA) has been suggested to increase resin cement adhesion to the surface of FRPs. However, which abrasion protocol is the most favorable is unclear.

Purpose

The purpose of this in vitro study was to compare the surface roughness and characteristic failure load of three FRP systems following different APA protocols.

Material and methods

A total of 150 posts from 3 manufacturers (glass FRP, quartz FRP, and zirconia-enriched glass FRP) were randomly assigned to different surface treatments (NT: no treatment—control; E0: cleaned with 96% ethanol solution; …