Dentistry Commons^™

Differences In Utilization Of Dental Procedures By Children Enrolled In Wisconsin Medicaid And Delta Dental Insurance Plans, Pradeep Bhagavatula, Qun Xiang, Aniko Szabo, Fredrick Eichmiller, Christopher Okunseri

School of Dentistry Faculty Research and Publications

Background

Few studies have directly compared dental procedures provided in public and private insurance plans for enrollees living in dental health professional shortage areas (DHPSAs). We examined the rates for the different types of dental procedures received by 0–18-year-old children living in DHPSAs and non-DHPSAs who were enrolled in Medicaid and those enrolled under Delta Dental of Wisconsin (DDW) for years 2002 to 2008.

Methods

Medicaid and DDW dental claims data for 2002 to 2008 was analyzed. Enrollees were divided into DDW-DHPSA and non-DHPSA and Medicaid-DHPSA and non-DHPSA groups. Descriptive and multivariable analyses using over-dispersed Poisson regression were performed to …

Short Implants Had Lower Survival Rates In Posterior Jaws Compared To Standard Implants, Gary L. Stafford

School of Dentistry Faculty Research and Publications

Data sources

PubMed/Medline, Embase and Cochrane Library databases supplemented by searches of the journals; Clinical Implant Dentistry and Related Research, Clinical Oral Implants Research, International Journal of Oral and Maxillofacial Implants, International Journal of Oral and Maxillofacial Surgery, Journal of Clinical Periodontology, Journal of Dentistry, Journal of Oral and Maxillofacial Surgery, Journal of Oral Implantology, Journal of Oral Rehabilitation, Journal of Periodontology, Periodontology 2000.

Study selection

Randomised controlled trials (RCTs) and prospective studies with at least ten patients, published in the last ten years that compared short and standard implants and published in English were considered.

Data extraction and …

Development Of Plga-Coated Β-Tcp Scaffolds Containing Vegf For Bone Tissue Engineering, Arash Khojasteh, Farahnaz Fahimipour, Mohamadreza Baghaban Eslaminejad, Mohammad Jafarian, Shahrbanoo Jahangir, Farshid Bastami, Mohammadreza Tahriri, Akbar Karkhaneh, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Bone tissue engineering is sought to apply strategies for bone defects healing without limitations and short-comings of using either bone autografts or allografts and xenografts. The aim of this study was to fabricate a thin layer poly(lactic-co-glycolic) acid (PLGA) coated beta-tricalcium phosphate (β-TCP) scaffold with sustained release of vascular endothelial growth factor (VEGF). PLGA coating increased compressive strength of the β-TCP scaffolds significantly. For in vitro evaluations, canine mesenchymal stem cells (cMSCs) and canine endothelial progenitor cells (cEPCs) were isolated and characterized. Cell proliferation and attachment were demonstrated and the rate of cells proliferation on the VEGF released scaffold was …

Recent Advancements In Regenerative Dentistry: A Review, Pouya Amrollahi, Brinda Shah, Amir Seifi, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Although human mouth benefits from remarkable mechanical properties, it is very susceptible to traumatic damages, exposure to microbial attacks, and congenital maladies. Since the human dentition plays a crucial role in mastication, phonation and esthetics, finding promising and more efficient strategies to reestablish its functionality in the event of disruption has been important. Dating back to antiquity, conventional dentistry has been offering evacuation, restoration, and replacement of the diseased dental tissue. However, due to the limited ability and short lifespan of traditional restorative solutions, scientists have taken advantage of current advancements in medicine to create better solutions for the oral …

Efficacy Of The Biomaterials 3 Wt%-Nanostrontium-Hydroxyapatite-Enhanced Calcium Phosphate Cement (Nanosr-Cpc) And Nanosr-Cpc-Incorporated Simvastatin-Loaded Poly(Lactic-Co-Glycolic-Acid) Microspheres In Osteogenesis Improvement, Reza Masaeli, Tahereh S. Jafarzadeh Kashi, Rassoul Dinarvand, Vahid Rakhshan, Hossein Shahoon, Behzad Hooshmand, Fatemeh Mashhadi Abbas, Majid Raz, Alireza Rajabnejad, Hossein Eslami, Kimia Khoshroo, Mohammadreza Tahriri, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Aims

The purpose of this multi-phase explorative in vivo animal/surgical and in vitro multi-test experimental study was to (1) create a 3 wt%-nanostrontium hydroxyapatite-enhanced calcium phosphate cement (Sr-HA/CPC) for increasing bone formation and (2) creating a simvastatin-loaded poly(lactic-co-glycolic acid) (SIM-loaded PLGA) microspheres plus CPC composite (SIM-loaded PLGA + nanostrontium-CPC). The third goal was the extensive assessment of multiple in vitro and in vivo characteristics of the above experimental explorative products in vitro and in vivo (animal and surgical studies).

Methods and results pertaining to Sr-HA/CPC

Physical and chemical properties of the prepared Sr-HA/CPC were evaluated. MTT assay and …

Lubricin In Synovial Fluid Of Mild And Severe Temporomandibular Joint Internal Derangements, Rosalia Leonardi, Rosario E. Perrotta, Luis Eduardo Almeida, Carla Loreto, Giuseppe Musumeci

School of Dentistry Faculty Research and Publications

Background: To understand the molecular basis of temporomandibular joint (TMJ) pathologies, we aimed to investigate the lubricin levels in the TMJ synovial fluid (SF) of patients with mild to severe internal derangements (IDs). Material and Methods: A total, 34 joints were the study group. Only patients, with a Wilkes stage of III, IV and V were included, in this sample. Control group consisted of SF from eight joints, from patients undergoing to orthognatic surgery. Concentrations of lubricin in the SF from both samples were measured using ELISA system. Results: The mean lubricin concentration was 7.029 ± 0.21 µg/mL in stage …

Color Change Of Commercial Resin Composited With Different Photoinitiators, Feng Gao

Master's Theses (2009 -)

Camphorquinone (CQ) is the most commonly used photoinitiator in light-cured dental resin composites. However CQ is associated with a yellowing effect, which has led manufacturers to add alternative initiators into resin composites to reduce the amount of CQ used. The color change upon polymerization by light and aging in artificial saliva and room air of 8 commercial traditional or bulk-fill resin composites with or without additional photoinitiator(s) beside CQ was studied. The three traditional resin composites with CQ and additional photoinitiator(s) tested were Tetric EvoCeram (Ivoclar Vivadent), AELITE LS Posterior (Bisco), and Vit-l-escence (Ultradent). The two bulk-fill resin composites with …

Effects Of Oral Contraceptives On The Prevalence Of Alveolar Osteitis After Mandibular Third Molar Surgery: A Retrospective Study, Luis Eduardo Almeida, Sean Pierce, K. Klar, K. Sherman

School of Dentistry Faculty Research and Publications

The objective of this study was to investigate the influence of oral contraceptives on the incidence rate of alveolar osteitis (AO) following the surgical extraction of both impacted mandibular third molars. This retrospective study reviewed the clinical records of patients who presented to the oral surgery clinic of a university school of dentistry for the extraction of impacted mandibular third molars. Using a database search, all patients were categorized by sex, age, occurrence of AO, and whether the females were taking oral contraceptives at the time of surgery. The patient was considered positive for AO if either one or both …

Edge Chipping Resistance And Flexural Strength Of Polymer Infiltrated Ceramic Network And Resin Nanoceramic Restorative Materials, Renos Argyrou, Geoffrey A. Thompson, Seok-Hwan Cho, David W. Berzins

School of Dentistry Faculty Research and Publications

Statement of problem

Two novel restorative materials, a polymer infiltrated ceramic network (PICN) and a resin nanoceramic (RNC), for computer-assisted design and computer-assisted manufacturing (CAD-CAM) applications have recently become commercially available. Little independent evidence regarding their mechanical properties exists to facilitate material selection.

Purpose

The purpose of this in vitro study was to measure the edge chipping resistance and flexural strength of the PICN and RNC materials and compare them with 2 commonly used feldspathic ceramic (FC) and leucite reinforced glass-ceramic (LRGC) CAD-CAM materials that share the same clinical indications.

Material and methods

PICN, RNC, FC, and LRGC material specimens …

Accuracy And Precision Of Occlusal Contacts Of Stereolithographic Casts Mounted By Digital Interocclusal Registrations, Jason T. Krahenbuhl, Seok-Hwan Cho, Jon Patrick Irelan, Naveen K. Bansal

Mathematics, Statistics and Computer Science Faculty Research and Publications

Statement of problem

Little peer-reviewed information is available regarding the accuracy and precision of the occlusal contact reproduction of digitally mounted stereolithographic casts.

Purpose

The purpose of this in vitro study was to evaluate the accuracy and precision of occlusal contacts among stereolithographic casts mounted by digital occlusal registrations.

Material and methods

Four complete anatomic dentoforms were arbitrarily mounted on a semi-adjustable articulator in maximal intercuspal position and served as the 4 different simulated patients (SP). A total of 60 digital impressions and digital interocclusal registrations were made with a digital intraoral scanner to fabricate 15 sets of mounted stereolithographic …

Mechanical Properties Of Natural Chitosan/Hydroxyapatite/Magnetite Nanocomposites For Tissue Engineering Applications, Fatemeh Heidari, Mehdi Razavi, Mohammad E. Bahrololoom, Reza Bazargan-Lari, Daryoosh Vashaee, Hari Kotturi, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Chitosan (CS), hydroxyapatite (HA), and magnetite (Fe₃O₄) have been broadly employed for bone treatment applications. Having a hybrid biomaterial composed of the aforementioned constituents not only accumulates the useful characteristics of each component, but also provides outstanding composite properties. In the present research, mechanical properties of pure CS, CS/HA, CS/HA/magnetite, and CS/magnetite were evaluated by the measurements of bending strength, elastic modulus, compressive strength and hardness values. Moreover, the morphology of the bending fracture surfaces were characterized using a scanning electron microscope (SEM) and an image analyzer. Studies were also conducted to examine the biological response …

Dental Applications Of Natural-Origin Polymers In Hard And Soft Tissue Engineering, Hossein E. Jazayeri, Mina D. Fahmy, Mehdi Razavi, Brett E. Stein, Aatif Nowman, Radi Masri, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Clinical advances in the treatment of dentoalveolar defects continue to evolve with the introduction of new innovations in regenerative medicine and tissue bioengineering. Recent developments in tissue engineering are aimed at safely and effectively regenerating a damaged or necrotic area by replenishing its cells and increasing surrounding gene expression. Various techniques have successfully given rise to porous scaffolds being used by clinicians to treat the defect and initiate the repair process. Tissue reconstruction using bioengineered scaffolds is advantageous over traditional autografting, since it prevents the instigation of pain and donor site morbidity while ultimately creating both the environment and machinery …

Thermal Properties Of Copper Nickel-Titanium Orthodontic Archwires, Joshua Gilbert

Master's Theses (2009 -)

Introduction: Copper Nickel-Titanium (CuNiTi) is a relatively new composition of Nickel-Titanium (NiTi) archwires that was originally patented in 1991 as part of the Ormco line of wires. The patent has now recently expired and many other orthodontic companies are making their own CuNiTi wires. Advertisement claims have focused on the laboratory benefits of adding Copper (Cu) to the NiTi, however few independent laboratory testings have been conducted on these new wires to verify claims. The purpose of this study was to conduct thermal analysis of CuNiTi for all currently available wires in two Austenite Finish (Af) variants and two commonly …

Mechanical Properties Of Copper-Nickel-Titanium Archwires, Margaret Amelia Rosen

Master's Theses (2009 -)

Introduction: The initial phase of orthodontic therapy relies on flexible wires, usually composed of a nickel-titanium alloy, to apply a substantially constant load during tooth movement. Copper has been added to nickel-titanium archwires, resulting in an alloy with potential clinical advantages such as a lower stress hysteresis. Many orthodontic companies claim that their copper-nickel-titanium manufacturing process allows for the production of more consistent transition temperatures in the wires, allowing the orthodontist to customize treatment to various patients based on the force level needed. There are currently many manufacturers of these wires, creating a wide range of copper-nickel-titanium archwires from which …

The Effect Of Orthodontic Appliances On The Evaluation Of The Professionalism And Esthetics Of An Adult Employee, Laura Hanson Vaccariello

Master's Theses (2009 -)

This study explored the influence of fixed and removable orthodontic appliances on participants’ ratings of the job performance, intelligence, and attractiveness of an adult female. Ninety-four adult subjects were recruited from the Graduate School of Management at Marquette University. Each subject received an identical employee performance review with an attached photograph of a female employee. The smile of the photo was manipulated to represent one of four conditions: no orthodontic appliance, a metal orthodontic appliance, a ceramic orthodontic appliance, or a clear aligner. Subjects then rated the employee on three continuous Likert scales. Ratings of job performance, intelligence, and attractiveness …

The Effects Of Mechanical Vibration On Human Chondrocytes In Vitro, Bradley J. Gauthier

Master's Theses (2009 -)

Introduction: Inflammation is the biological basis of temporomandibular joint disorders (TMD), when severe it can lead to osteoarthritis. One of the physical therapies used to manage this condition is mechanical vibration, as has been used in medicine for many years as a non-pharmacological therapy. Recently an FDA approved dental device called AcceleDent has been introduced to increase the rate of tooth movement and decrease pain. As the device-generated vibration transmits to the TMJ, it is important for us to investigate whether mechanical vibration influences TMJ on its biologic basis – chondrocytes under normal and inflammatory conditions. Materials and Methods: Human …

The Effect Of Mechanical Vibration On Human Pdl Cell Differentiation And Response To Inflammation, Megan Desroches

Master's Theses (2009 -)

Low magnitude mechanical vibration is a therapeutic adjunct being investigated to alter bone remodeling and inflammation in areas such as osteoporosis, bone fracture healing, and muscle soreness after exercise. In orthodontics a device named AcceleDent has been marketed that claims to increase the rate of tooth movement and decrease pain. However evidence for these claims is lacking. In this study we looked at two potential cellular mechanisms for these claims: periodontal ligament (PDL) cell differentiation and inflammation under an orthodontic model of strain (IL-1β). Increased PDL cell differentiation into osteogenic cells could be an avenue of increasing orthodontic tooth movement. …

Evaluation Of An Oral Health Education Session For Early Head Start Home Visitors, Kevin Glatt, Christopher Okunseri, Diane Flanagan, Pippa Simpson, Yumei Cao, Earnestine Willis

School of Dentistry Faculty Research and Publications

Objectives

Home visiting programs promote the education and health of Early Head Start (EHS) children and pregnant women. However, EHS's oral health component is unevenly implemented. We conducted an educational intervention to improve oral health knowledge and motivational interviewing techniques among Wisconsin EHS home visitors.

Methods

A questionnaire assessing oral health-related knowledge and confidence was administered to home visitors before and after an educational session. Changes between pre/post-responses were analyzed with McNemar's test and Wilcoxon Signed Rank test.

Results

After the intervention there were increases in both knowledge and confidence related to oral health communication. Knowledge increases were observed in …

Wearing Complete Dental Prostheses - Effects On Perioral Morphology, Gregor F. Raschke, Philipp Eberl, Geoffrey A. Thompson, Arndt Guentsch, Andre Peisker, Stefan Schultze-Mosgau, Marta Gomez-Dammeier, Gabriel Djedovic, Ulrich M. Rieger, Florian Beuer

School of Dentistry Faculty Research and Publications

Background: To adequately perform rehabilitation of edentulous patients by a complete removable dental prosthesis (CRDP) is from basic interest to dentists to understand the morphologic changes caused by re-establishment of a physiologic jaw relationship. Anthropometric analyses of standardized frontal view and profile photographs may help elucidate such changes. Material and Methods: Photographs of 31 edentulous patients were compared in relaxed lip closure and after insertion of a CRDP in stable occlusion. 2232 anthropometric distances were raised. Eighteen anthropometric indices reflecting the perioral morphology and its integration in the vertical facial harmony were investigated. Results: The intercanthal – mouth width index …

Longterm Quality Of Life After Oncologic Surgery And Microvascular Free Flap Reconstruction In Patients With Oral Squamous Cell Carcinoma, Andre Peisker, Gregor F. Raschke, Arndt Guentsch, Korosh Roshanghias, Francy Eichmann, Stefan Schultze-Mosgau

School of Dentistry Faculty Research and Publications

Background: Quality of life (QoL) has become increasingly important in cancer treatment. It refers to the patient’s perception of the effects of the disease and therapy, and their impact on daily functioning and general feeling of well being. Material and Methods: In this prospective study, a total of 100 patients treated at our institution, completed the European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 questionnaire and the specific EORTC QLQ-H&N35 module. The questionnaires were distributed to the patients between 12 and 60 months postoperatively. Results: Global QoL score was 58.3 and mean score for functioning scale was 76.7. …

Comparison Of The Transformation Temperatures Of Heat-Activated Nickel-Titanium Orthodontic Archwires By Two Different Techniques, Noor Aminah Obaisi, Maria Therese S. Galang-Boquieren, Carla A. Evans, Tzong Guang Peter Tsay, Grace Viana, David W. Berzins, Spiro Megremis

School of Dentistry Faculty Research and Publications

Objectives

The purpose of this study was to investigate the suitability of the Bend and Free Recovery (BFR) method as a standard test method to determine the transformation temperatures of heat-activated Ni-Ti orthodontic archwires. This was done by determining the transformation temperatures of two brands of heat-activated Ni-Ti orthodontic archwires using the both the BFR method and the standard method of Differential Scanning Calorimetry (DSC). The values obtained from the two methods were compared with each other and to the manufacturer-listed values.

Methods

Forty heat-activated Ni-Ti archwires from both Rocky Mountain Orthodontics (RMO) and Opal Orthodontics (Opal) were tested using …

Mentors And Role Models: Two Approaches For Inspiration, Gary L. Stafford

School of Dentistry Faculty Research and Publications

No abstract provided.

Microfluidic Manipulation Of Core/Shell Nanoparticles For Oral Delivery Of Chemotherapeutics: A New Treatment Approach For Colorectal Cancer, Mohammad Mahdi Hasani-Sadrabadi, Shahrouz Taranejoo, Erfan Dashtimoghadam, Ghasem Bahlakeh, Fatemeh Sadat Majedi, Jules John Vandesarl, Mohsen Janmaleki, Fatemeh Sharifi, Arnaud Bertsch, Kerry Hourigan, Lobat Tayebi, Phillippe Renaud, Karl I. Jacob

School of Dentistry Faculty Research and Publications

A microfluidics approach to synthesize core–shell nanocarriers with high pH tunability is described. The sacrificial shell protects the core layer with the drugs and prevents their release in the severe pH conditions of the gastrointestinal tract, while allowing for drug release in the proximity of a tumor. The proposed nanoparticulate drug-delivery system is designed for the oral administration of cancer therapeutics.

Three-Dimensional Bioprinting Materials With Potential Application In Preprosthetic Surgery, Mina D. Fahmy, Hossein E. Jazayeri, Mehdi Razavi, Radi Masri, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Current methods in handling maxillofacial defects are not robust and are highly dependent on the surgeon’s skills and the inherent potential in the patients’ bodies for regenerating lost tissues. Employing custom-designed 3D printed scaffolds that securely and effectively reconstruct the defects by using tissue engineering and regenerative medicine techniques can revolutionize preprosthetic surgeries. Various polymers, ceramics, natural and synthetic bioplastics, proteins, biomolecules, living cells, and growth factors as well as their hybrid structures can be used in 3D printing of scaffolds, which are still under development by scientists. These scaffolds not only are beneficial due to their patient-specific design, but …

Removable Partial Dentures Vs Overdentures In Children With Ectodermal Dysplasia: Two Case Reports, Georgios Maroulakos, Ioli I. Artopoulou, Matina V. Angelopoulou, Dimitris Emmanouil

School of Dentistry Faculty Research and Publications

Ectodermal dysplasia (ED) represents a disorder group characterised by abnormal development of the ectodermal derivatives. Removable partial dentures (RPD), complete dentures (CD) or overdentures (OD) are most often the treatment of choice for young affected patients. Prosthetic intervention is of utmost importance in the management of ED patients, as it resolves problems associated with functional, aesthetic, and psychological issues, and improves a patient’s quality of life. However, few studies present the principles and guidelines that can assist in the decision-making process of the most appropriate removable prosthesis. The purpose of this study was to suggest a simple treatment decision-making algorithm …

Acrylic Resin Guide For Locating The Abutment Screw Access Channel Of Cement-Retained Implant Prostheses, Ayman Ahmed, Georgios Maroulakos, Jorge Garaicoa

School of Dentistry Faculty Research and Publications

Abutment screw loosening represents a common and challenging technical complication of cement-retained implant prostheses. This article describes the fabrication of a simple and accurate poly(methyl methacrylate) guide for identifying the location and angulation of the abutment screw access channel of a cement-retained implant prosthesis with a loosened abutment screw.

Outcomes Of Primary Endodontic Therapy Provided By Endodontic Specialists Compared With Other Providers, Jacob Burry, Sheila E. Stover, Fredrick Eichmiller, Pradeep Bhagavatula

School of Dentistry Faculty Research and Publications

Introduction

The objective of this study was to compare the outcomes of initial nonsurgical root canal therapy for different tooth types provided by both endodontists and other providers.

Methods

By using an insurance company database, 487,476 initial nonsurgical root canal therapy procedures were followed from the time of treatment to the presence of an untoward event indicated by Current Dental Terminology codes for retreatment, apical surgery, or extraction. Population demographics were computed for provider type and tooth location. Kaplan-Meier survival estimates were calculated for 1, 5, and 10 years. Hazard ratios for provider type and tooth location were calculated by …

Is Cell Viability Always Directly Related To Corrosion Resistance Of Stainless Steels?, E. Salahinejad, M. Ghaffari, Daryoosh Vashaee, Lobat Tayebi

School of Dentistry Faculty Research and Publications

It has been frequently reported that cell viability on stainless steels is improved by increasing their corrosion resistance. The question that arises is whether human cell viability is always directly related to corrosion resistance in these biostable alloys. In this work, the microstructure and in vitro corrosion behavior of a new class of medical-grade stainless steels were correlated with adult human mesenchymal stem cell viability. The samples were produced by a powder metallurgy route, consisting of mechanical alloying and liquid-phase sintering with a sintering aid of a eutectic Mn–Si alloy at 1050 °C for 30 and 60 min, leading to …

Evaluation Of Die Trim Morphology Made By Cad/Cam Technology, Pratiksha Agrawal

Master's Theses (2009 -)

Purpose: The purpose of this vitro study was to evaluate the accuracy of the morphology of digitally trimmed dies in comparison with the subgingival contour of a prepared tooth to be restored with a single crown. Materials and Methods: 20 human extracted teeth, 10 incisors and 10 molars were disinfected, mounted on dentoforms. The teeth were prepared for a single all ceramic restoration. Digital impressions of the preparations were made using the 3M Lava COS. With the data, the SLA models were fabricated with removable dies. The prepared tooth and the corresponding dies were then compared with the Rhino software. …

Mitigating Distortion Of Light-Polymerized Composite Trial Bases, Jon Patrick Irelan

Master's Theses (2009 -)

Triad Visible Light Cure (VLC) Denture Base Material, a light-polymerizing resin material, is commonly used by clinicians to make trial bases during the fabrication of dentures and in planning the prosthetic and surgical rehabilitation of edentulous patients. A well-known drawback to this material, however, is its tendency to distort during the light-polymerization process. This distortion tends to occur most often towards the posterior aspect of the palate, and can negatively impact the bases ability to be retained through suction to the edentulous arch. The purpose of this study was to evaluate whether an experimental polymerization protocol can mitigate distortion during …