Prosthodontics and Prosthodontology Commons^™

Care And Maintenance Of Dental Restorations, Ibeth Erazo

Publications and Research

Contributing to the longevity of the restoration by minimizing the effects of surface corrosion, maintaining the esthetic appearance and the smooth surface characterization, and contributing to gingival health by lessening the potential for plaque retention are the principal reasons for taking care of dental restorations. However, during oral hygiene routine procedures and prevention treatments, these desired effects are not always achieved. In many cases, the restorative materials are not identified in a patient’s record leading to damage during oral hygiene performance by dental professionals. Therefore, it is important to be able to recognize the different restorative materials and employ the …

Stress Analysis Comparing Effect Of Two Different Cad-Cam Implant Superstructure Materials (In-Vitro Study), Noura Turky Saad, Essam Osman, Ahmed M. Abdelhamid, Mohamed Shokry, Ehab A. Farghaly

BAU Journal - Creative Sustainable Development

Purpose: This study was conducted to evaluate the micro-strain around dental implant using two different CAD/CAM crown fabricated materials through strain gauge analysis. Materials and Methods: Five dental implants were fixed in a 5 previously drilled solid rigid polyurethane test blocks in the edentulous area with neighboring abutments mesial and distal printed out using special 3D Dental printer, Cyanoacrylate adhesive was then used to fix the printed-out part on to the polyurethane test blocks, creating the bounded saddle replicas. Ten CAD/CAM screw retained crowns were fabricated; five Enamic crowns from vita enamic blocks, and five zirconia crowns from presintered katana …

The Effect Of Artificial Aging And Surface Treatments On Microtensile Bond Strength Of Resin Cement To Hybrid Ceramics, Engy I. Hassan Shohdy, Shereen A. Nossair, Amina M. Hamdy

Future Dental Journal

Purpose: To assess the effect of aging and various surface treatments on the microtensile bond strength of resin cement to two hybrid esthetic materials. Materials and Methods: Zirconia-reinforced lithium silicate (Celtra Duo, Dentsply Sirona, United States) and hybrid resin nanoceramic (Cerasmart TM, GC Corporation, Japan) blocks were cut into plates of 3 mm thickness. Each ceramic material was surface treated either with hydrofluoric acid etching and silane or with sandblasting and silane. A dual-cured adhesive resin cement (Panavia TM V5, Kuraray, U.S.A.) was utilized to bond the composite resin plates to the surface treated ceramic plates. The ceramic-composite resin blocks …

Nanomaterials And Nanorobotics In Dentistry: A Review, Yelda Kasimoglu, Derya Tabakcilar, Zeynep A. Guclu, Seiko Yamamoto-Nemoto, Elif B. Tuna, Bugra Ozen, Tamer Tuzuner, Gökhan Ince

Journal of Dentistry Indonesia

Nanotechnology is a branch of science focusing on the manipulation of materials measured on the nanoscale (size = 1–100 nm). Recent advances in the field of nanodentistry have resulted in the development of alternative treatment plans for common dental problems, bringing about a paradigm shift in dentistry. Nanorobots, also known as “nanites” or “nanomachines,” are theoretical microscopic devices that may be used for the diagnosis and treatment of oral health problems. This paper aims to discuss the latest innovations in the field of nanodentistry.

Oral Rehabilitation Of A Patient With Congenital Erythropoietic Porphyria: A Rare Case Report, Raif Alan, Hakkı Çelebi, Fahriye Kilinc, Recep Dursun

Journal of Dentistry Indonesia

Congenital erythropoietic porphyria (CEP) is an extremely rare disorder involved in chronic porphyrias. One of the recommended evaluations to determine disease severity and needs of a person with CEP is dental assessment. Objective: To present a case of CEP and its oral rehabilitation. Case Report: A 32-year-old female patient was admitted to the clinic with hyperkeratinization, skin fragility, fissures, and wounds in her perioral region and hands. Intraoral gingival bleeding, mucogingival stress, and missing teeth were recorded. After medical consultation, phase I and II periodontal therapies were performed. The patient expressed satisfaction of the results of the procedures in terms …

Effect Of Nanofiller Coating And Loading On Facial Elastomer Physical Properties, Rahmi K. Aulia

Theses & Dissertations

Current materials used for facial prostheses are far from being desirable, and improved properties with “skin-like” feel are needed. This study evaluates property changes induced by sequential additions of uncoated and hydrophobic-coated nano-SiO₂ to polydimethylsiloxane (PDMS) and compares them with those measured for conventional submicron SiO₂-filled materials. Each filler type was sequentially added to vinyl-terminated PDMS at 0%, 0.5%, 5%, 10%, and 15% by weight. Tensile, tear, Durometer hardness, translucency and viscoelastic properties were evaluated, with hardness and translucency also evaluated following 3000 hours of outdoor weathering. Results demonstrated that 15% coated nano-SiO₂-filled PDMS materials …

Cad/Cam Milling Versus Rapid Prototyping Surgical Guide Techniques In Dental Implant Placement, Fardos N. Rizk Prof., Marwa Sabet Prof., Hebatallah Mohammed, Adham Elghamry

Dentistry

No abstract provided.

Efficacy Of Stem Cell Allograft In Maxillary Sinus Bone Regeneration: A Randomized Controlled Clinical And Blinded Histomorphometric Study, Josh Whitt, Mohanad Al-Sabbagh, Dolph R. Dawson Iii, Ehab Shehata, Moly Housley-Smith, Alejandro G. Villasante Tezanos, Ahmad Kutkut

Oral Health Practice Faculty Publications

Purpose: This study aimed to evaluate the quality and quantity of newly generated bone in the maxillary sinus grafted with stem cell-based allograft material.

Methods: This study was a single site, prospective, blinded, randomized, and controlled clinical trial. Eleven subjects with 18 edentulous posterior maxillary sites requiring sinus augmentation for delayed implant placement using a lateral window approach were enrolled. At the time of sinus augmentation, test sinus was grafted with stem cell-based allograft (Osteocel Plus; NuVasive Therapeutics), while the control sinus was grafted with conventional cortico-cancellous allograft (alloOss; ACE Surgical). Cone beam computer tomography (CBCT) scan was taken before …

Replacing A Single Tooth: Single Implant Vs. Three Unit Bridge, Ibeth Erazo, Aneeza Hussain

Publications and Research

There are more than two options for restoring a single tooth but our research includes a three-unit bridge and a single-tooth implant as the main options. In this paper, we discuss the advantages and disadvantages of these methods and the factors that must be considered when choosing between them for the replacement of a single tooth. Although in some cases a three-unit bridge is the most appropriate choice, implants have the advantage of allowing preservation of the integrity of sound teeth adjacent to the edentulous area. Many factors must be considered when choosing between a three-unit bridge and an implant …

Preheating-Temperature Affects Nanoleakage And Degree Of Conversion Of Dual-Cured Adhesive/Resin-Composite, Sara Adel Botros, Farid Sabry El-Askary, Zainab Diaa Soliman, Dalia Ibrahim El-Korashy

Dentistry

No abstract provided.

Current Status Of Magnetic Resonance On Saliva For Oral And Dental Health Early Diagnosis, Anastasia Katsavochristou, Dimitrios Koumoulis

Oral Health Practice Faculty Publications

Magnetic resonance spectroscopy of biomolecules has recently gained attention for clinical diagnosis. Its combination with saliva collection and analysis can promote early disease detection and monitoring, by identifying biomarkers of specific underlying pathology or disease as detected in saliva. With this novel, non-invasive technique, certain salivary biomarkers have been linked to dental and periodontal tissues pathology, as well as to specific head and neck cancer malignancies. At present, diagnostic biomarkers are still in need for further identification (e.g., diagnosis and monitoring of Sjögren’s syndrome), and nuclear magnetic resonance spectroscopy has been found to be a promising technique to compliment the …

Effect Of Different Surface Treatments On The Shear Bond Strength Between Lithium Disilicate Glass-Ceramic And Resin Cement, Siripan Simasetha

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: The study aimed to evaluate the shear bond strength (SBS) of lithium disilicate glass-ceramic and resin cement using different surface treatments. Methods: Lithium disilicate blocks (Vintage LD Press ®) were prepared, etched with 4.5 % hydrofluoric acid, and randomly divided into seven groups (n=10), depending on the surface treatments: 1) no surface treatment (control), 2) Silane Primer (KS), 3) Signum® Ceramic Bond I (SGI), 4) Signum® Ceramic Bond II (SGI/SGII), 5) experimental silane (EXP), 6) experimental-silane/Signum® Ceramic Bond II (EXP/SGII), and 7) Experimental/Adper™ Scotchbond Multi-purpose Adhesive (EXP/ADP). The specimens were cemented to resin composite blocks with resin cement and …

Effect Of Surface Treatment And Storage Time On Immediate Repair Bond Strength Durability Of Methacrylate- And Ormocer-Based Bulk Fill Resin Composites., Sara Adel Botros

Dentistry

The aim of this study was to evaluate the effect of surface treatment and storage time on immediate repair bond durability of methacrylate- and ormocer-based bulk fill composites. In total, 265 discs were divided into 32 groups (n = 8/group) according to: (1) Material: X-tra fil and Admira Fusion X-tra; (2) Surface treatment: oxygen inhibition; matrix; Futurabond M+; Silane/Futurabond M+; Admira Bond; Silane/Admira Bond; ceramic repair system; and Silane/Cimara bond; and (3) Storage time: 24 h and 6 months. Each disc received three micro-cylinders from the same material. Specimens were subjected to micro-shear bond strength testing either at 24 h …

Radiographic Bone Changes Surrounding Implants Of Different Attachment Systems., Sara Fikry El Shafei Dr, Fardos N Rizk Prof

Dentistry

This study was conducted to compare the effect of GPS attachment, OT Equator attachment and Ball and Socket attachment on crestal bone around implants in implant retained mandibular overdenture cases. Materials and Methods: Following two stage surgical protocol eighteen completely edentulous patients received two implants placed bilaterally in the canine region (36 implants) to retain mandibular overdentures. Inclusion Criteria: Patients were all healthy men, non-smokers, Following Misch rules of bone classification patients with bone density ranging from 850-1250 HU (D2) and bone height and width more than 10 mm and 5 mm respectively. Four months following the surgery patients were …

Comparative Study Of Two Fifferent Telescopic Crown Materials Retaining Lower Partial Overdenture, Fardos N. Rizk Prof., Ayman Hany Amin Dr., Gehan Fikry Prof., Amr Ismail Dr.

Dentistry

Background and Objective: This study was conducted to measure the difference between Chrome Cobalt telescopic crowns and Poly ether ether ketone (PEEK) telescopic crowns retaining implant retained partial overdenture.

Materials and Methods: This is a comparitive study that included fourteen lower kennedy class I partially edendulous patients. All patients received posterior implant in the second molar area in each side. The patients were divided into 2 groups, the first group received chrome cobalt telescopic crown and the second group received poly ether ketone telescopic crowns over the implants. Partial overdenture was constructed for all the patients in the two groups. …

Global Interest For Health Professions Education: A Geographic And Temporal Analyses Through Web Search Differences From 2010-2019, Junhel Dalanon, Yoshizo Matsuka

Internet Journal of Allied Health Sciences and Practice

Purpose: The purpose of this study was to analyze the spatio-temporal differences in web search trends for dental degrees (DD), medical degrees (MD), and nursing degrees (ND) across 197 countries from 2010 to 2019. Method: A search string was used to initiate a search query using Google Trends. The parameters used were DD, MD, and ND as search terms; worldwide as Location; 2010 to 2019 as time range; health education & medical training as category; and web search as database. Data were downloaded and analyzed. Results: Via one-way ANOVA and post hoc Dunnett test, the searches for DD were found …

Comparative Study Of Tensile Bond Strength Between Resin Cements And Hybrid Materials, Chakriya Donpinprai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose: To compare tensile bond strength among the hybrid materials (VITA ENAMIC®, SHOFU Block HC, Katana AVENCIA and Experimental material) using two primers (Universal ceramic primer and RelyX ceramic primer) and two resin cements (Super-Bond C&B and RelyXTM U200). Methods: Twenty blocks of 4×4×1 mm3 were prepared from each material type. In VITA ENAMIC® group, specimens were conditioned with 5% Hydrofluoric acid and primer. In SHOFU Block HC and Katana AVENCIA groups, specimens were treated with 50µm alumina and primer. In experimental material, specimens were etched with 65% Phosphoric acid. Ten specimens were randomly assigned to each group for different …

Gene Expression And Immunohistochemistry Analysis Of Xenograft And Allograft In Maxillary Sinus Floor Augmentation, Isaya Kungvarnchaikul

Chulalongkorn University Theses and Dissertations (Chula ETD)

Quality of bone is an important factor contributing to the success of dental implants. The bone height in maxillary posterior area sometimes is not enough and might pose risks for placing dental implants. Maxillary sinus augmentation with bone substitutes is used for filling and correcting bony defects. This study aims to determine the differences in gene expressions of TNF-alpha, RUNX2, COL1A1, ALP between xenograft (Bio-Oss®) and allograft (SureOss®). Patients who needed two-stage maxillary sinus floor augmentation were included (n=13). Patient who had dental implant at posterior maxilla without bone substitutes was also used in immunohistochemistry analysis (IHC) (n=1). Bone samples …

Effect Of Deep Margin Elevation With Resin Composite And Resin-Modified Glass Ionomer On Marginal Sealing Of Cad/Cam Ceramic Inlays: An In Vitro Study, Jaraswan Vichitgomen

Chulalongkorn University Theses and Dissertations (Chula ETD)

Purpose. To evaluate the marginal sealing ability of different restorative materials used in deep margin elevation (DME) on zirconia-reinforced lithium silicate CAD/CAM ceramic restoration. Methods. A total of 30 Class II cavities were prepared in freshly extracted human molars with the proximal gingival margin located 1 mm below the cemento-enamel junction (CEJ). All specimens were randomly assigned to one of three groups (n=10): control group, resin composite group (FiltekTM Z350 XT), and resin-modified glass ionomer group (VitremerTM Tricure). In group 1, control group, no DME was performed. The inlay margin of the control group was placed directly onto dentin. In …

The Effect Of Laser Power On Mechanical And Physical Properties Of Ti-6al-4v Eli Fabricated By Selective Laser Melting, Pajaree Termrungruanglert

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to examine the differences in mechanical and physical properties of Ti-6Al-4V extra low interstitial (ELI) fabricated by selective laser melting (SLM) between different laser power. The Ti-6Al-4V ELI alloy samples were printed in dumbbell shape by SLM machine (Trumpf/TruPrint 1000, Germany) with 3 laser powers (75, 100 and 125 W), 8 samples for each group. And the other parameters (spot size 30 µm, scanning speed 600 mm/s, layer thickness 30 µm) were kept constantly. All samples were performed under tensile test with universal testing machine. Moreover, The microhardness test was performed. All data were statistically analyzed with …

Influence Of Demineralized Dentin On Marginal Seal Using Primerless Wet Bonding Technique: In-Vivo Study, Thanyarat Lerttriphob

Chulalongkorn University Theses and Dissertations (Chula ETD)

The purpose of this study was to compare microleakage distance between Class V restorations and tooth interface when using either 4-META-MMA/TBB or MMA/TBB resin adhesives by using 1 % ferric chloride in 1% citric acid (1-1) for conditioning periods of 10s (1-1-10s) 30s (1-1-30s) and 60s (1-1-60s) for in-vivo study. Material and methods: A total of 60 Class V box cavities were divided into 6 groups of 10 specimens (n= 10) on the caries-free, vital, and hopeless periodontally-compromised teeth, scheduled for extraction. A Class V cavity (3mm × 3mm × 1.5mm) was prepared on the buccal or lingual surface located …

Effect Of Ultrasonic Treatment On The Transverse Strength Of Relined Denture Base With Autopolymerizing Acrylic Hard Reline Material, Tithiporn Arunwichit

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study evaluated the effect of ultrasonic treatment and surface treatments on transverse strength of denture bases which relined with auto-polymerizing acrylic resin. The study groups, ninety heat-polymerized acrylic resins (64×10×2 mm) were divided by three surface treatments: no surface treatment (N), applied MMA for 180 seconds (MM), applied MF-MA for 15 seconds (MF). They were relined with auto-polymerized acrylic resin to create 64×10×3.3 mm specimens. Then, they were divided further by ultrasonic which were no ultrasonic (X), ultrasonic in water (W), ultrasonic in 30% ethanol (E). As a result, all test groups were classified as NX, NW, NE, MMX, …

Exploring The Use Of Pulsed Erbium Lasers To Retrieve A Zirconia Crown From A Zirconia Implant Abutment, Ahmed Elkharashi

Theses and Dissertations

Removal of zirconia crowns, commonly used as cement-retained implant fixed restorations, can be challenging. Conventional methods of crown removal are time consuming and often leave irreparable damage to the crown, which can be costly to patients and practitioners. This research explored the use of two different types of pulsed erbium lasers, erbium-doped yttrium aluminum garnet laser (Er:YAG) and erbium, chromium-doped yttrium, scandium, gallium and garnet (Er,Cr:YSGG), as non-invasive tools to retrieve cemented zirconia crowns from zirconia implant abutments. Times needed to remove the crowns were recorded and analyzed using ANOVA (��=0.05). No statistical differences between the debond times of each …

Three Dimensional Biometric Guide In Determining Maxillary Tooth Position And Arch Form, Tawfiq Omar Farouq

Student Works (2020-2029)

In complete denture fabrication, when pre-extraction records are lacking, determining the denture teeth positions to where the natural predecessors occupied is essential yet challenging. Although several biometric guides were suggested to position teeth for dentures, none is providing three-dimensional (3D) positions of teeth that can be used in the recently developed computer designed digital dentures. The aim of this study was to develop new biometric guides to determine the original 3D positions of the maxillary teeth and dental arch form individualised for each given dentate or edentulous maxillary cast based on selected intraoral landmarks. The objectives were to investigate the …

Accuracy Of Blx And Blt Guided Implants In The Edentulous Maxilla: An In Vivo Study, Benjamin Andrew Kordusky

Graduate Theses, Dissertations, and Problem Reports (ETD)

Objectives: To determine the accuracy of dental implants placed using a dual scan CBCT protocol with a SLA 3D printed mucosa supported surgical guide using a flapless surgical approach with regard to sleeve position, type of implant, and regional location in the maxillary arch.

Methods: Nine patients received 4 dental implants utilizing a fully guided, flapless approach with a mucosa supported SLA surgical guide with 3 fixation pins. Implants were immediately loaded using an attachment placed in an existing Maxillary complete denture. Accuracy of implant positions were evaluated by the Treatment Evaluation module of coDiagnostiX (DentalWings, Montreal, Canada). Statistical analysis …

The Visual And Spectrophotometric Effect Of External Bleaching On Omnichroma Resin Composite And Natural Teeth, Michael Brian Evans

Graduate Theses, Dissertations, and Problem Reports (ETD)

Objective: To determine the visual and spectrophotometric effect external tooth bleaching has on natural tooth structure and OMNiCHROMA composite at various number of treatments. Variables were compared to determine if there is a detectable difference between the composite and the tooth before and after bleaching.

Methods: Preparation and restoration of 25 previously extracted teeth was completed. OMNiCHROMA composite was used. Each tooth was measured visually with a VITA shade guide and a colorimeter. Measurements were recorded before bleaching, after 5 and 10 treatments. Statistical analysis was completed and ΔE values between the composite and tooth were compared between the 3 …