Prosthodontics and Prosthodontology Commons^™

Analysis Of Periapical Biopsies Submitted For Histopathological Evaluation: A Retrospective Study, Abdullah I. Alqaied

Master's Theses

Apical periodontitis is the most common pathological process in the periapical region. Disciplined clinical and radiographic evaluations and appropriate diagnostic tests can detect lesions related to apical periodontitis. Aside from this, lesions mimicking pulp-related pathology but unrelated to pulpal infection and necrosis are occasionally discovered in the periapical region. The objective of this study was two-fold: (1) to determine the prevalence of diverse periapically located pathological entities, and (2) to apply that information to evaluate the rationale for routine submission of surgically obtained tissue for histological examination and diagnosis. Methods: A 5-year retrospective analysis of pathology reports from the UCONN …

Effect Of Two Different Implant Structures On Stresses Induced Within The Surrounding Bone Using Three Dimensional Finite Element Analysis, Fardos N. Rizk

Dentistry

objective: The purpose of this study is to compare the stresses induced within the bone surrounding the Trabecular Metal Dental Implant (Zimmer Dental Inc., Carlsbad, CA, USA) in comparison to the stresses induced within the bone surrounding its predicate Tapered Screw Vent Implant (Zimmer Dental Inc., Carlsbad, CA, USA) using three dimensional finite element analysis. materials and methds: The current finite element analysis simulated a clinical situation where an edentulous mandible was restored with an entirely implant supported cantilever bar overdenture retained by five implants placed parallel to each other in the interforaminal region opposed by a complete denture. Two …

Comparative Study Of Ot Equator Profile Attachment Versus Gps Attachment In Implant Retained Mandibular Overdenture Cases, Fardos N. Rizk

Dentistry

Aim: This study was carried out to evaluate whether OT Equator Profi le attachment or GPS attachment is less destructive to crestal bone around implants and to bone in distal aspect of the ridge in implant retained mandibular overdenture cases. Materials and Methods: Following two stage surgical protocol twelve completely edentulous patients received two implants placed bilaterally in the canine region (24 implants) to retain mandibular overdentures. Four months following the surgery patients were randomly divided into two equal groups; Group-I received OT Equator Profi le attachment while Group-II received GPS attachment upon which mandibular overdentures were retained. Once patients …

Radiodensitometric Evaluation Of The Effect Of Low Energy Laser Irradiation With And Without Anioxidant Therapy On Immediately Loaded Implant Supported Overdenture, Fardos N. Rizk, Mouchira Salah Eldin Prof.

Dentistry

objective: The purpose of this study is to compare the bone height and density around immediately loaded implants placed in the canine area supporting a mandibular overdenture in four different groups. The first group received low level laser therapy and antioxidants. The second group received antioxidants only. The third group received low level laser therapy only. The fourth group (control group) received no therapy. materials and methods: Following one stage surgical protocol twenty four implants were inserted bilaterally in the canine region to support mandibular overdentures for twelve completely edentulous patients in the form of two implants per patient. Patients …

In Vivo Measurement Of Color Relationships Between The Maxillary Central Incisor And Canine As A Function Of Age, Marie E. Falcone

Master's Theses

Abstract

Introduction

It has long been taught that the basic shade (hue) of the patient can be taken from the canine (i.e. that tooth thought to have the highest chroma of a particular hue) and then that hue can be applied to other anterior teeth but at a lower chroma. However, this concept does not appear to derive from published measurements or observations. This study documented the color relationship between in vivo maxillary central incisors and canines to examine: (1) whether they share the same hue, but have different chromas (as commonly taught); and, (2) whether color differences (∆E values) …

Hyperbaric Oxygen Therapy For Promoting Osseointegration Around Dental Implants In Heavy Smokers, Fardos N. Rizk, Nasser Shaheen

Dentistry

Objective: The purpose of this study is to evaluate the effect of hyperbaric oxygen (HBO) therapy on osseointegration of implants supporting mandibular overdenture in heavy smokers. Materials and Methods: Following two stage surgical protocol twelve completely edentulous male heavy smokers received implants placed bilaterally in the canine region to support mandibular overdenture. On the second day after the surgery patients were divided randomly into two equal groups. Patients of group I were placed on a protocol of five consecutive sessions of HBO therapy, while patients of group II received no therapy and served as control. Four months following the surgery …

Eccentric Interchangeability Of The Semi‑Adjustable Articulator: A Pilot Study, Mark James Hopkins

Theses and Dissertations (ETD)

Background: Dental articulation is a method of approximating the patient's mandibular motion in order to allow for analysis of dental relations and fabrication of appliances. The most prevalent method used in teaching institutions is the semi-adjustable articulator. Several of these instruments claim interchangeability without loss of clinical accuracy and studies have supported this claim. No studies to date have assessed the interchangeability of the articulators in any relation other than hinge axis closure. Assessment of the accuracy of interchangeability of calibrated articulators will inform the profession of this parameter of articulation and allow for informed decisions on whether or not …

Evaluating Dimensional Accuracy And Reliability Of "Stitched" Small Field Of View (Ssfov) Cone Beam Computed Tomography (Cbct) Datasets For Use In Proprietary Dental Implant Guided Surgery Software, Nicholas Luke Egbert

Theses and Dissertations (ETD)

Background: Recently a "stitched" small field of view (SSFOV) cone beam computed tomography (CBCT) extraoral imaging system (Kodak 9000D, Carestream Health Inc, Kodak Dental Systems, Marne‑la‑Vallee, France) has been released. The benefits of the 3D stitching module of stitched SFOV CBCT may include: broader range of applications, affordability, flexibility, safety optimizing radiation dose and improved workflow. With the reduced effective dose of radiation and cost to both the patient and clinician, this superior imaging modality becomes more accessible to the community, potentially elevating the standard of care. Currently, stitched data sets are restricted to diagnostic data gathering only. To date, …

Tomographic Assessment Of Different Attachment Sizes In Implant Supported Overdenture, Fardos N. Rizk, Marwa Sabet, Wael Amer

Dentistry

objective: This research was carried to evaluate which ball size mounted on bar splinting two implants supporting overdenture is more favorable regarding bone height and density. material &methods: Two implants(Tut Dental Implant System,ECDI Cairo, Egypt) splinted by bar (OT bar Multiuse attachments,Cas,RHEIN 83, ITALY) carrying two balls (OT Cap attachments, Cas, RHEIN 83 Italy) were inserted in n=10/gp. Patients were divided into two groups according to the size of the balls used which were either micro1.8mm or macro 2.5mm (control group). For all patients overdentures were constructed & conventional tomograms were taken. Crestal bone height & density around the implants …

The Effect Of Two Different Implant Systems On Bony Changes In Mandibular Implant Supported Overdenture, Fardos N. Rizk, Eatmad Elrekaby, Azza Farahat

Dentistry

objective: This study was conducted to evaluate the bone changes that may occur around Legacy I implants and NanoTite Tapered implants supporting mandibular overdentures utilizing cone beam computed tomography (CBCT). materials and methods: Fourteen completely edentulous male patients were randomly divided into two equal groups. Group I: Each patient received two Legacy I implants. Group II: Each patient received two NanoTite Tapered Implants. All implants were inserted bilaterally in the mandibular canine region. For all patients conventional complete dentures were constructed before implants placement. After complete osseointegration of implants, dome shaped healing collars were screwed to the implants upon which …

A Comparative Evaluation Of Locator Versus Ball And Socket Attachment In Implant Retained Mandibular Overdenture Cases Using Cbct, Fardos N. Rizk, Marwa Sabet Prof., Amany Elhadary, Wael Amer

Dentistry

No abstract provided.

Different Treatment Modalities In Free End Saddle Cases, Fardos N. Rizk

Dentistry

No abstract provided.

Clinical And Mechanical Evaluation Of A New All-Ceramic Restorative Material Turkon-Cera™., Bandar Mohammed Abdullah Al-Makramani

Student Works (2010-2019)

The mechanical properties and clinical performance of Turkom-Cera system were evaluated in this study. The mechanical properties evaluated were; flexural strength, microhardness, shear bond strength, fracture resistance and marginal integrity. The biaxial flexural strength and hardness of Turkom-Cera compared to two other allceramic systems (In-Ceram and Vitadur-N) were investigated. The Turkom-Cera exhibited significantly higher flexural strength (506.8 MPa) than In-Ceram (347.4 MPa) and Vitadur-N (128.7 MPa) ceramic materials. However, In-Ceram core has significantly higher hardness (1116.2 VHN) than Turkom-Cera (1002.1 VHN) and Vitadur-N (812.8 VHN) all-ceramic materials. In order to find the optimal choice of luting cement and surface treatment …

Clinical And Mechanical Evaluation Of A New All-Ceramic Restorative Material Turkom-Cera., Bandar Mohammed Abdullah Al-Makramani

Student Works (2010-2019)

The mechanical properties and clinical performance of Turkom-Cera system were evaluated in this study. The mechanical properties evaluated were; flexural strength, microhardness, shear bond strength, fracture resistance and marginal integrity. The biaxial flexural strength and hardness of Turkom-Cera compared to two other allceramic systems (In-Ceram and Vitadur-N) were investigated. The Turkom-Cera exhibited significantly higher flexural strength (506.8 MPa) than In-Ceram (347.4 MPa) and Vitadur-N (128.7 MPa) ceramic materials. However, In-Ceram core has significantly higher hardness (1116.2 VHN) than Turkom-Cera (1002.1 VHN) and Vitadur-N (812.8 VHN) all-ceramic materials. In order to find the optimal choice of luting cement and surface treatment …

Neural Crest Contributions To Dental Pulp Stem/Progenitor Cells And Craniofacial Structures: Alveolar Processes, Tongue And Temporomandibular Joint, Vinay Jain

Theses and Dissertations (ETD)

Background: The cranial neural crest, a transient embryonic structure in vertebrates, is crucial to craniofacial and dental development. Populations of multipotent stem cells have been identified in various dental tissues including dental pulp. Hence, identification of multipotent cells of neural crest lineage within dental pulp and delineation of neural crest contributions to various craniofacial tissues may be a step towards utilizing the potential of neural crest progenitor cells for therapeutic applications.

Objective: The overall purpose of the study was to identify a population of dental pulp stem/progenitor cells of neural crest lineage and demonstrate their neural differential potential and to …

Immediate Tooth Replacement With Subepithelial Connective Tissue Graft Using Platform Switching Implants, Seunghwan Chung

Loma Linda University Electronic Theses, Dissertations & Projects

This case series evaluated the facial gingival stability following immediate tooth replacement in conjunction with subepithelial connective tissue graft in the esthetic zone. Implant success rate and peri-implant tissue response were also reported.

Ten patients (6 males, 4 females), with a mean age of 52.1 (range = 22.7 to 67.1) years, underwent immediate implant placement and provisionalization with SCTG and were evaluated clinically and radiographically at pre-surgery (T0), immediately after immediate tooth replacement and SCTG (T1), 3-months (T2), 6-months (T3), and 12-months (T4) after surgery. Data was analyzed using the Wilcoxon Signed-Ranks Test and Friedman Test at the significance level …