Dentistry Commons^™

Histomorphometric Analysis Of Maxillary Sinus Grafts: A Randomized Controlled Study, Mina Nishimoto

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this clinical investigation was to evaluate and compare the degree of new bone formation through histomorphometric analysis following maxillary sinus grafts (MSG) using three different bone graft materials. Thirty-one MSG were performed using a lateral window approach for patients who required implant placement in posterior maxilla. Each sinus was randomly selected to receive one of three bone graft materials; Group A: anorganic bovine bone mineral (ABBM) [Bio-Oss®], Group B: anorganic equine bone mineral (AEBM) [Equimatrix®], or Group C: mineralized cancellous bone allograft (MCBA) [OSSIF-i sem™]. A total of 28 bone cores were obtained at a mean time …

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

School of Dentistry Faculty Research and Publications

No abstract provided.

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 …

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 …

A Simplified Technique For Implant-Abutment Level Impression After Soft Tissue Adaptation Around Provisional Restoration, Ahmad Kutkut, Osama Abu-Hammad, Robert Q. Frazer

Oral Health Practice Faculty Publications

Impression techniques for implant restorations can be implant level or abutment level impressions with open tray or closed tray techniques. Conventional implant-abutment level impression techniques are predictable for maximizing esthetic outcomes. Restoration of the implant traditionally requires the use of the metal or plastic impression copings, analogs, and laboratory components. Simplifying the dental implant restoration by reducing armamentarium through incorporating conventional techniques used daily for crowns and bridges will allow more general dentists to restore implants in their practices. The demonstrated technique is useful when modifications to implant abutments are required to correct the angulation of malpositioned implants. This technique …

Ada News - 05/16/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Color Stability, Physical Properties And Antifungal Effects Of Zro2 And Tio2 Nanoparticle Additions To Pigmented Polydimethylsiloxanes, Mazen Alkahtany

Theses & Dissertations

Introduction: Color changes, physical degradation and fungal infections are potential challenges to the longevity of polydimethylsiloxane (PDMS) elastomers. The purpose of this study was to evaluate potential improvements in color change, physical properties and anti fungal properties of PDMS loaded with TiO2 and ZrO2 nanoparticles.

Methods: 1% weight of 40 nm or 200 nm diameter TiO2 or ZrO2 nanoparticles were mixed into PDMS with 2% functional intrinsic yellow pigment and polymerized. Control materials contained 13% weight 200 nm silica. Samples were exposed to either 3000 hours of UVB radiation (200 μW/cm2) or darkness. Color parameters L*a*b* and ΔE*, ultimate tensile …

Ada News - 05/02/2016, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Chhs May 2016 Icymi, Dr. John Bonaguro, Dean, Vashon S. Wells, Editor, Wku College Of Health & Human Services

College of Health & Human Services Publications

No abstract provided.

The Effect Of Ah Plus And Zinc Oxide Eugenol-Based Root Canal Sealers On Preventing Residual Bacteria In Dentinal Tubules From Accessing The Root Canal, Napapas Nidhidvanich, Panida Thanyasrisung, Pavena Chivatxaranukul

Chulalongkorn University Dental Journal

Background/objectives To investigate the ability of two root canal sealers in preventing residual bacteria in dentinal tubules from accessing the main root canal space. Materials and methods Thirty-five sterilized root samples were randomly assigned to 5 groups: Gutta percha+AH Plus sealer (AH Plus, n=10), Gutta percha+Zinc oxide eugenol sealer (ZOE, n=10), Gutta percha without sealer (GP, n=5), Flowable resin composite coating (composite, n=5), and noninfected samples+GP (aseptic control, n=5). All samples, except the aseptic control, were incubated with Enterococcus faecalis for 4 weeks. All canals were chemo-mechanically prepared and obturated according to the assigned groups. After 1 week, the filling …

Screw Retightening Increases The Implantabutment Connection Screw Loosening Resistance Of Two Implant Systems, Sudarat Nubdee, Ticha Kanchanapoomi, Wacharasak Tumrasvin, Trakol Mekayarajjananonth

Chulalongkorn University Dental Journal

Background/Objective To evaluate the effect of three screw-tightening methods on the screw loosening resistance of two dental implant systems. Materials and methods Fifteen Simple Line II dental implants and 15 CU dental implant abutments were screw tightened to their implant fixtures to the manufacturerûs recommended torque using three tightening methods (method 1: tightening the screw one time, method 2: tightening the screw and retightening the screw after 10 min, method 3: tightening the screw, loosening the screw, retightening the screw, and then retightening the screw after 10 min). After a 106-cycle fatigue test, the reverse torque values were measured. The …

Depth Of Cure, Flexural Strength, Microhardness, And Cytotoxicity Of Light Activated Pit And Fissure Resin-Based Sealant Experimental Prototypes, Pasutha Thunyakitpisal, Sirithan Jiemsirilers, Dujreutai Pongkao Kashima, Onusa Saravari, Nonglax Thunyakitpisal, Thitima Rupunt

Chulalongkorn University Dental Journal

Objective To evaluate the light-activated pit and fissure resin-based sealant prototypes (LAS-clear and LAS-opaque) for depth of cure, flexural strength, microhardness, and cytotoxicity compared with commercial light-activated pit and fissure resin-based sealants. Material and methods LAS-clear, LAS-opaque, Delton-clear (DC), Helioseal clear (HC), Helioseal opaque (HO), and Clinpro (CL) were investigated for depth of cure per ISO 6874:2005. Their flexural strength and microhardness were also evaluated. Cytotoxicity was determined using an MTT based colorimetric assay. Statistical analysis was performed using the SPSS program. Results All materials met ISO 6874:2005 requirements. The mean depth of cure of DC, HC, and LAS-clear were …

Pneumatization Of The Sphenoid Sinus On A Panoramic Radiograph, Pipop Sutthiprapaporn, Pornpop Rattana-Arpha

Chulalongkorn University Dental Journal

The paranasal sinuses are composed of a set of structures of the maxillofacial region and its proximity to the oral cavity. The sphenoid sinus is located within the body of the sphenoid bone. However, an excessive pneumatization of this structure may cause difficulties in radiographic diagnosis, particularly with panoramic radiographs. This article describes a case of pneumatization of the sphenoid sinus in the pterygoid process and greater wing of the sphenoid bone, presented on a panoramic radiograph. Cone beam computed tomography in axial and coronal sections was performed to confirm the pneumatization of these structures.

New Dentist News (May 2016), Ada Committee On The New Dentist

New Dentist News

New Dentist News offers timely information on scientific, social, educational, political and economic developments affecting new dentists. This collection is historical and items may not reflect current standards. For up-to-date information contact the ADA. The New Dentist News was alternately titled ADA Lifeline, 1997-June 2001.

Filifactor Alocis, A Newly Appreciated Oral Pathogen, Fails To Induce The Respiratory Burst Response Of Human Neutrophils., Jacob S. Edmisson

College of Arts & Sciences Senior Theses

Almost 50% of adult Americans suffer from periodontitis which is a bacterially induced inflammation of the tissue that surround and support the tooth. The accumulation of neutrophils, a critical cell component of the innate immune system, in the gingival crevice contributes to tissue damage. Filifactor alocis is a newly appreciated pathogen present in oral biofilms at periodontal disease sites. Studying the interactions between neutrophils and F. alocis will provide valuable information for delineating the role of this bacterium in periodontal disease and enhance our understanding of bacterial strategies to evade leukocytes’ antimicrobial mechanisms. The hypothesis that F. alocis modulates human …

Long Term Facial Alveolar Bone Changes Associated With Endosseous Implants In The Anterior Maxilla., Deepika Joshi

Electronic Theses and Dissertations

Aim: To quantify the radiographic presence and thickness of facial alveolar bone (FAB_r) adjacent to implants placed in the anterior maxillary region. Lack of FAB_r may suggest that graft procedures are desirable prior to implant placement. Material and Methods: With IRB approval, a retrospective analysis of cone beam computed tomographic cross-sectional images of sites with at least one implant in the anterior maxillary region was performed. Details regarding type of implant and location were recorded. FAB_r perpendicular to the long axis each implant was measured at seven levels by two observers independently and means and standard …

Influence Of In-Office Oral Hygiene Instructions On The Parental Assessment Of Their Child's Oral Health., Sireesha Kodali

Electronic Theses and Dissertations

Purpose: To identify the relation between oral health education and parental assessment of their child’s dental condition. Methods: Our study population included 33,342 children, from Smile KY! annual screenings from 2002 to 20014. Data collection was through questionnaire forms. Our primary risk factor was “dental health instructions received” (yes/no) and our outcome of interest was “parental assessment of your child’s dental health” (good/fair/poor). We had 13 years of data from 2002 to 2014 and used ‘SAS’ statistical software for data manipulation and recoding. Descriptive statistics, chi-square test of independence, trend analysis and multiple logistic regression modeling were performed on ‘SPSS’ …

Contribution Of Probiotics Streptococcus Salivarius Strains K12 And M18 To Oral Health In Humans: A Review, Turner A. Stowik

Honors Scholar Theses

The overgrowth and disequilibrium of pathogenic microorganism species both native and non-native to the oral cavity can manifest into a variety of different oral diseases, pathologies, and afflictions in humans, including dental caries, gingivitis, pharyngitis, halitosis, and oral candidiasis. Two bacterial strains with clinically-significant probiotic applications in curtailing the pathogenic bacterial growth involved in these conditions are Streptococcus salivarius strain K12 and Streptococcus salivarius strain M18. To summarize the most up-to-date in vitro, in vivo, and clinical research findings, administration of these S. salivarius strains typically in the form of probiotic lozenges results in colonization, reduction in inflammatory measures, …

Advances In Endodontics: Potential Applications In Clinical Practice., Anil Kishen, Ove A. Peters, Matthias Zehnder, Anibal R. Diogenes, Madhu K. Nair

All Dugoni School of Dentistry Faculty Articles

Contemporary endodontics has seen an unprecedented advance in technology and materials. This article aimed to review some of the challenges and advances in the following sections: (1) endodontic imaging, (2) root canal preparation, (3) root canal disinfection, (4) root canal filling, and (4) regenerative endodontic procedures (REPs). Jointly, these advances are aimed at improving the state of the art and science of root canal treatment.