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Articles 31 - 60 of 91
Full-Text Articles in Dentistry
Effect Of Air-Abrasion Preparation On Shear Bond Strength Of Orthodontic Brackets To Enamel Surface, Elliott Katz
Effect Of Air-Abrasion Preparation On Shear Bond Strength Of Orthodontic Brackets To Enamel Surface, Elliott Katz
Student Theses, Dissertations and Capstones
Introduction: An optimal orthodontic bonding system must minimize damage to the enamel during conditioning, have enough bond strength to prevent bracket de-bonding during treatment, and allow bracket removal at treatment completion, such that minimal damage is inflicted to the tooth.1 Pumice followed by acid etching has been the standard for many years; however, Groman Inc. (Margate, FL, USA) has stated that using their air-abrasion product will result in a tripling of bond strength. This method claims a three-fold increase in bond strength compared to traditional acid etching techniques by substituting air-abrasion using the EtchMaster® (Groman Inc., Margate, FL) 50 μm …
Comparing The Efficacy Of Scalpel, Electrosurgical, And Laser Gingivectomies For The Management Of Gingival Enlargement Following Orthodontic Therapy, Mehdi Garashi
Student Theses, Dissertations and Capstones
Introduction: Gingival enlargement can occur during orthodontic therapy and often may not subside following removal of the orthodontic appliances. It may lead to esthetic concerns, as well as potential reservoirs for bacteria and hinder oral hygiene efforts. Treatment has included nonsurgical debridement alone or in combination with gingival resection using laser, electrosurgery, or conventional scalpel. Objectives: To compare the clinical effectiveness of three resective techniques in the management of gingival enlargement following orthodontic therapy with regards to: Gingival margin position (GMP), probing depths (PDs), bleeding scores, plaque index (PI), gingival index (GI) and patient postoperative discomfort. Materials and Methods: 17 …
Effect Of Tooth Angulation, Archwire Material And Vibration On Resistance To Sliding In Conventional Twin Brackets, Liliam Hernandez
Effect Of Tooth Angulation, Archwire Material And Vibration On Resistance To Sliding In Conventional Twin Brackets, Liliam Hernandez
Student Theses, Dissertations and Capstones
Objective: The purpose of this study was to evaluate the effect of bracket angulation, archwire material, and vibration on the resistance to sliding of orthodontic brackets to slide along an archwire. Background: In Orthodontics, resistance to sliding generated at the wire-bracket interface has a bearing on the force transmitted to the teeth. Resistance to tooth movement in orthodontics can occur in one of two ways. One, is when a practitioner closes a space at an extraction site and the brackets slide along the archwire. The other is when teeth tip, and the angulation between the bracket and archwire produces binding …
Florida Orthodontists' Willingness To Provide A Human Papillomavirus Educational Intervention, Marc Edward Weber
Florida Orthodontists' Willingness To Provide A Human Papillomavirus Educational Intervention, Marc Edward Weber
Student Theses, Dissertations and Capstones
Introduction: Human Papillomavirus (HPV) is the most common sexually transmitted infection with an estimated fourteen million new cases each year in the United States alone. HPV infections generally resolve with little or no incident, but persistent infections can lead to more serious sequelae such as oral and cervical cancers. The Centers for Disease Control and Prevention recommends that all 11-12 year olds receive the HPV vaccine; yet, the prevalence of HPV vaccination in the U.S. population is far below the prevalence of routine childhood vaccinations. Clearly, there is a public health imperative to increase the HPV vaccination rate among American …
Depth Of Cure Of Resin Composites: Effect Of Incremental Layering Versus Bulk Placement And Effect Of Curing Light Type, Najat Aldossarry
Depth Of Cure Of Resin Composites: Effect Of Incremental Layering Versus Bulk Placement And Effect Of Curing Light Type, Najat Aldossarry
Student Theses, Dissertations and Capstones
Background: The introduction of resin composite was a revolution in dentistry and it has shown a high level of success as a direct restorative material. Appropriate techniques and light curing units are essential for optimal clinical outcomes. Objective: To assess depth of cure of two bulk-fill composites and one nanofill resin composite, when photopolymerized with two different curing light units (CLU), placed with an incremental layering versus bulk-fill technique. Material and methods: Two Bulk-fill resin composites (Surefil SDR® Flow and Tetric EvoCeram®) and a conventional nanofill (FiltekTM Supreme Ultra) were used to prepare 90 cylindrical specimens. Specimens (n=5/group) were made …
Effect Of Curcumin And Bromelian On Osteogenesis Of Gingiva Derived Stem Cells, Selin Avman
Effect Of Curcumin And Bromelian On Osteogenesis Of Gingiva Derived Stem Cells, Selin Avman
Student Theses, Dissertations and Capstones
Background: Mesenchymal stem cells (MSCs) are attractive cell sources for tissue engineering application because of their ability to proliferate and differentiate into mesenchymal tissues. MSCs derived from human gingiva are readily accessible and highly proliferative with the ability to differentiate into an osteogenic lineage, making them ideal sources for tissue regeneration of craniofacial defects. While dexamethasone is a traditional inducer of osteogenic differentiation, studies have shown that its prolonged presence in culture medium may have toxic effects on osteoblasts. Many antioxidants play a vital role in promoting osteogenic differentiation and offer a potential alternative to dexamethasone. It has been demonstrated …
Comparison Of Micro-Osteoperforation And Low Level Laser Therapy (Lllt) On Accelerated Tooth Movement – An Animal Study, Abelardo Daya Attie
Comparison Of Micro-Osteoperforation And Low Level Laser Therapy (Lllt) On Accelerated Tooth Movement – An Animal Study, Abelardo Daya Attie
Student Theses, Dissertations and Capstones
Introduction: Demand for orthodontic treatment is increasing amongst patients of all ages, including adults. Typically, a comprehensive orthodontic treatment requires two to three years of active tooth movement, which may not seem desirable for adults. Orthodontic appliances can impede proper oral hygiene and increase the risk of white spot lesions and caries. Other sequel of lengthy orthodontic treatment includes external apical root resorption, increased plaque index, increased level of dental caries and subsequent gingivitis, root resorption, gingival inflammation, and bone loss. Reduction of treatment time may reduce the risk of the undesirable sequel and increase the acceptance rate of orthodontic …
A Study Of The Relationship Between Mandibular Second Molar Impaction And Class Ii Malocclusions, Michael Wiernicki
A Study Of The Relationship Between Mandibular Second Molar Impaction And Class Ii Malocclusions, Michael Wiernicki
Student Theses, Dissertations and Capstones
Introduction: Detection of impacted teeth by the orthodontist is imperative for diagnosis and treatment planning. A tooth is impacted when it has arrested eruption due to the presence of a clinically or radiographically visible physical barrier in the path of eruption. The most commonly impacted teeth are third molars, followed by maxillary canines and mandibular second premolars. When referring to mandibular second molar (MM2) impaction, prevalence ranges from as low as 0.06-0.65%1-5, to as high as 1.36% and 1.8%. Numerous studies have identified etiologic risk factors for MM2 impaction, such as mesial crown angulation, dental crowding, morphological tooth anomalies, and …
Comparison Of Cutting Efficiency Of Different Rotary Instruments, On Two Different Ceramic Materials Using Electric And Air-Turbine Dental Hand-Pieces, Salam Hetou
Student Theses, Dissertations and Capstones
Objective. This study compared the cutting efficiency of different diamond rotary cutting instruments on twoceramic materials when used with an electric handpiece versus an air-turbine handpiece. The amount of surface roughness exhibited by an electric hand-piece was also evaluated in comparison with an air-turbine hand-piece, when used to cut through ceramic restorative materials in a simulated crown removal procedure. Materials and Methods.One-hundred and sixty ceramic specimens were fabricated from lithium disilicate (IPS e.max Press, Ivoclar Vivadent, Amherst, NY) and zirconium oxide (ZirCAD, Ivoclar Vivadent, Amherst, NY) with standardized dimensions (5mm x 2mm x 20mm). Samples were divided into eight groups …
Effect Of Prophylactic Pastes On Surface Roughness And Gloss Of Esthetic Dental Restorative Materials, Thani Alsharari
Effect Of Prophylactic Pastes On Surface Roughness And Gloss Of Esthetic Dental Restorative Materials, Thani Alsharari
Student Theses, Dissertations and Capstones
Objective: To evaluate the average surface roughness (Ra) and gloss (GU) of four different commonly used ceramics, four resin composites and human enamel after application of four different types of prophylactic pastes. Material and methods: A total of two hundred and forty specimens, composed of four types of ceramics and four types of resin composites were prepared to test the hypothesis. Twenty specimens were assigned to the first two ceramic groups: Lithium disilicate (LiSi2), and Feldspathic ceramic (FP). The third ceramic group, Zirconia (Zi) included one-hundred and twenty specimens divided into two groups of sixty specimens each (IPS e.max ZirCAD …
Tooth Size Comparison Between Citizens Of The Chickasaw Nation And Caucasians, Tyler Chance Devaughan
Tooth Size Comparison Between Citizens Of The Chickasaw Nation And Caucasians, Tyler Chance Devaughan
Student Theses, Dissertations and Capstones
Objective The goal of this study is to establish normative tooth crown size (mesio-distal width) data for the Chickasaw Nation and demonstrate how it relates to Caucasian standards. Background: Tooth size ratios represent a diagnostic tool that allow for a prediction of treatment outcomes. A proper relationship of the total mesio-distal width of the maxillary dentition to the mesio- distal width of the mandibular dentition will favor an ideal post treatment occlusion. If a patient has a significant tooth size discrepancy between the dental arches, alignment of the teeth into this ideal occlusion may not be possible. Patients commonly receive …
Characteristics Associated With Successful Dental Treatment In Children With Autism Spectrum Disorder, Noah Turk
Student Theses, Dissertations and Capstones
Background. ASD is a neurodevelopmental disability, responsible for social, communicative and behavioral deficits. The prevalence of children diagnosed with ASD in the United States has more than doubled in the past two decades, from 1 in 150 to 1 in 68. Children diagnosed with ASD have a very high occurrence of certain comorbidities, such as developmental delay, intellectual disability and speech delay. Unmet dental needs remain high among children with special health care needs (SHCN), with 78% reporting the need for dental care within the last 12 months. Recent studies have focused on barriers to care for these patients; the …
Bmp2 Enhances Osteogenesis Of Gingival Stem Cells In Peptide Hydrogel, Annapurna Bondalapati
Bmp2 Enhances Osteogenesis Of Gingival Stem Cells In Peptide Hydrogel, Annapurna Bondalapati
Student Theses, Dissertations and Capstones
Purpose: The aim of the study was to investigate effect of the growth factor, Bone Morphogenetic Protein 2 (BMP2), on the differentiation of Human gingiva derived stem cells (HGMSCs) in a self-assembled three-dimensional (3D) peptide hydrogel. The study has two parts; part 1 comprised of optimizing the dose of BMP2 and Part II was investigating the effective delivery method of BMP2 in enhancing the osteogenic differentiation of HGMSCs Methods: Human gingiva derived mesenchymal stem cells (HGMSCs) cultured in the peptide hydrogel (3-D cultures) were treated with 50, 100 and 200 ng/ml BMP2. The cells in the osteogenic differentiation of HGMSCs …
Investigating Lip Protrusion Aesthetics By Comparing The Facial Profile View With An Oblique View, Barak Jones
Investigating Lip Protrusion Aesthetics By Comparing The Facial Profile View With An Oblique View, Barak Jones
Student Theses, Dissertations and Capstones
Introduction: Orthodontists strive to enhance facial esthetics. Notable orthodontists including Holdaway, Ricketts, Merrifield and more each made contributions to help diagnose facial disharmonies and improve treatment outcomes. Numerous studies have evaluated the face from two perspectives, frontal and profile. Orthodontic treatment can significantly transform a facial profile. Orthodontic literature has time and again compared photos, line drawings and silhouettes in order to define a harmonious profile. Some have concluded that a more protrusive lip profile than what had been outlined traditionally is now preferred. However, while this debate continues, in this dynamic world the profile perspective is not the most …
Evaluation Of Microshear Bond Strength Of Light-Cured Composite For Cementation Of Ceramic Veneer, Khalid Motlaq
Evaluation Of Microshear Bond Strength Of Light-Cured Composite For Cementation Of Ceramic Veneer, Khalid Motlaq
Student Theses, Dissertations and Capstones
Brief background and goal/ research question: Ceramic restorations were introduced as indirect restorative materials that combine high esthetics with superior mechanical properties. However, an important requirement for successful function of these restorations is adequate adhesion between the restoration material and tooth structure. The use of CAD/CAM restorations is steadily increasing, proper function and longevity of these restorations depends on good adhesion to the underlying substrate as well as operator technique. Preheated composite has been recommended by some clinicians and investigators for the adhesive luting of porcelain laminate veneers based on its good marginal adaptation and perceived superior mechanical durability when …
Indirect Bonding Of Orthodontic Brackets: A Comparison Of Positional Accuracy Between Software Vs. Stone Model Driven Techniques, Francesca Scilla Smith
Indirect Bonding Of Orthodontic Brackets: A Comparison Of Positional Accuracy Between Software Vs. Stone Model Driven Techniques, Francesca Scilla Smith
Student Theses, Dissertations and Capstones
Background: Many orthodontic clinicians consider indirect bonding of orthodontic brackets as a method of achieving greater accuracy and effectiveness in orthodontic treatment. Currently, few features of our world have escaped the influence of technology. The indirect system of orthodontic bonding offers an example of technology’s power through a computer-driven system that enables customized bracket placement that optimizes esthetics, accuracy, precision and efficiency. The purpose of this study was to compare the positional accuracy and reliability between traditional and computer-generated indirect bonding techniques. Methods: A total of 210 brackets (STEP metal brackets with slot size .022x.028) were placed using a four …
Effect Of Water Immersion On The Resistance To Sliding Of Coated Orthodontic Archwires, Jun Sik Kim
Effect Of Water Immersion On The Resistance To Sliding Of Coated Orthodontic Archwires, Jun Sik Kim
Student Theses, Dissertations and Capstones
Objectives: The objective of this in vitro study is to compare the resistance to sliding (RS) of coated and uncoated orthodontic archwires in ceramic brackets at various water-immersion times and bracket angulations. Background: Tooth-colored orthodontic systems have been developed to meet the patient’s esthetic needs. Ceramic brackets and polymer-coated archwires have been shown to demonstrate higher RS than metal brackets and archwires in dry conditions. However, there is no study to address the RS of coated archwires depending on water-immersion times as in the oral cavity. Therefore, it is necessary to examine RS of coated archwires sliding in ceramic brackets …
The Effect Of Grinding And Polishing Of Zirconia Surfaces On Surface Roughness, Gloss And Antagonist Wear, Manar Mohammed Alzahrani
The Effect Of Grinding And Polishing Of Zirconia Surfaces On Surface Roughness, Gloss And Antagonist Wear, Manar Mohammed Alzahrani
Student Theses, Dissertations and Capstones
Objective. This study was conducted to evaluate the surface roughness and gloss of yttrium-stabilized tetragonal zirconia after grinding and/or polishing of the surfaces and to investigate the effects of grinding and/or polishing on wear rate of zirconia and its composite antagonist. Background. Many clinicians are extremely concern about delivering zirconia restorations after proper glazing procedure, but in some cases, chair-side modification of the occlusal surfaces is required after cementation in order to obtain proper occlusion, which produces rough surfaces. Loss of the original zirconia gloss and wear of opposing dentition or restorations are some of the drawbacks of rough surfaces. …
Florida Orthodontist Participation As Medicaid Providers, Lisa Brooks
Florida Orthodontist Participation As Medicaid Providers, Lisa Brooks
Student Theses, Dissertations and Capstones
Low-income families are usually unable to afford the cost of orthodontic treatment. The Medicaid program exists to assist these families’ access to medical and dental care, including orthodontics in children and adolescents with severe malocclusions. There exists a contrast between need and care-received, which is a product of several general factors. This study will examine the factors involved with orthodontist participation. Previous studies have indicated that low reimbursement rates and excessive paperwork are among the reasons that providers choose not to participate in Medicaid. New studies have identified factors that were accurately able to predict if a dentist is a …
Effect Of Ceramic Thickness On The Final Color Of Veneer Restorations, Zainab M. Alsadah
Effect Of Ceramic Thickness On The Final Color Of Veneer Restorations, Zainab M. Alsadah
Student Theses, Dissertations and Capstones
Background: The integration of ceramic veneer thickness and substrate color are very challenging factors that dentists and lab technicians should control to achieve a good color match. The reproduction of a natural and homogenous color can be laborious when laminate veneers of 0.4 to 1.2 mm thick are cemented over a dark underlying substrate. Objective: The purpose of this in vitro study was to investigate the association of different ceramic veneer thicknesses cemented on different tooth substrate colors and its influence on final color match of ceramic veneers. Material and methods: Ninety slices IPS e-max CAD (Ivoclar Vivadent, Amherst, NY, …
Anatomical Study Of The Greater Palatine Artery: Clinical Implications For Palatal Graft Procedures, Nina Marie Karin Cunningham
Anatomical Study Of The Greater Palatine Artery: Clinical Implications For Palatal Graft Procedures, Nina Marie Karin Cunningham
Student Theses, Dissertations and Capstones
Introduction: The palate is a well-established donor site for obtaining graft tissue in periodontal plastic surgery procedures. However, proximity to the adjacent teeth on the lateral aspect and the greater palatine neurovascular bundle (GPB) on the medial aspect limit the amount of graft tissue that can be obtained from the palate. Previous studies have been concerned with the location of the greater palatine foramen as well as the greater palatine artery (GPA) and have established guidelines on how to estimate the distance between the teeth and the GPB. Traditionally, clinicians follow these guidelines and choose to avoid removing graft tissue …
A Comparative Evaluation Of Endodontic Irrigation Methods For Removal Of The Smear Layer, Ramzi Walid Alhashimi
A Comparative Evaluation Of Endodontic Irrigation Methods For Removal Of The Smear Layer, Ramzi Walid Alhashimi
Student Theses, Dissertations and Capstones
The purpose of this in vitro study is to compare the effect of various irrigation systems on smear layer removal in curved root canals. Root canal irrigation plays an important role in the debridement and disinfection of the root canal system. It has been well documented that the flushing component of the irrigants is as important as the tissue dissolving capability. Therefore, the efficacy of the irrigant might also be influenced by the method by which it is introduced. Fifty-one recently extracted molar teeth with root curvatures of more than 30° were selected according to Schneider's method. The teeth were …
Comparison Of Resistance To Sliding Between Brackets And Archwires Utilizing Various Ligature Materials, Jagdesh Dudani
Comparison Of Resistance To Sliding Between Brackets And Archwires Utilizing Various Ligature Materials, Jagdesh Dudani
Student Theses, Dissertations and Capstones
Objectives: The purpose of this study was to investigate the association between ligature material and frictional force created during orthodontic cuspid retraction. Maximum static and mean kinetic frictional resistance between conventional metallic orthodontic appliances and esthetic orthodontic appliances will be compared as well. Background: The use of ceramic brackets in conjunction with coated archwires and ligatures as an alternative to conventional stainless steel appliances has increased in response to the demand for more esthetic orthodontic appliances. Esthetic appliances are associated with increased frictional forces and therefore thought to slow the orthodontic treatment. Knowledge of frictional forces generated within various orthodontic …
Accuracy And Consistency Of Preformed Orthodontic Arch Wires And The Effect Of Energy Drinks, Caroline Albea
Accuracy And Consistency Of Preformed Orthodontic Arch Wires And The Effect Of Energy Drinks, Caroline Albea
Student Theses, Dissertations and Capstones
Introduction: Selection of the proper arch wire requires a thorough knowledge and understanding of the mechanical properties of wires as well as the system being used. Even with careful selection, orthodontists may experience different results due to the inaccuracy of the stated wire dimensions. Previous studies by Melling et al. have shown nickel titanium, stainless steel, and chrome-cobalt arch wires to be thinner than their marketed values.1 However, the literature is lacking information regarding (1) accuracy of the currently available orthodontic arch wires and (2) the consistency of the arch wire size. Orthodontic wires are also exposed to various chemical …
Evaluating Conventional And Digital Impressions Of Single Unit Restorations, And Conventional Vs. Digital Impressions From The Laboratory Technicians’ Perspective, Tagreed Alohali
Student Theses, Dissertations and Capstones
Objectives: To Evaluate the quality of Digital Impressions and Conventional Impressions sent to commercial dental labs and to compare Conventional impressions vs. Digital impressions from the Laboratory Technicians’ Perspective. Background: The literature lacks studies that evaluate the quality of final impressions of indirect restorations, particularly in the USA, additionally there is a direct relation between impressions accuracy and produced restoration quality, which makes it impossible to produce high quality restoration from poor impression. Methods: 259 PVS impressions were evaluated for their quality by a calibrated examiner using a specific evaluation form. Type of tray, arch and required restoration were recorded. …
Tooth Borne Anchorage: A Comparative Analysis, Shane Hodson
Tooth Borne Anchorage: A Comparative Analysis, Shane Hodson
Student Theses, Dissertations and Capstones
Objective: The purpose of this study was to compare two anchorage modalities. Differential mass and differential moments were compared for their anchorage effectiveness in the sagittal and vertical dimensions. Class I patients with maximum anchorage requirements and treated with four first premolar extractions were selected. Background: Due to a severe combination of crowding, incisor proclination and protrusion, and procumbency of the lips, certain patients require extractions and maximum anchorage in orthodontic treatment.8 Two tooth borne anchorage modalities, differential mass and differential moments, have been shown to be able to achieve maximum anchorage requirements.5, 7 Methods: The available digital records of …
An In-Vitro Comparison Of Bond Quality Using A Novel Flash-Free Adhesive System With Metal Brackets, Joseph Kevin Ryan
An In-Vitro Comparison Of Bond Quality Using A Novel Flash-Free Adhesive System With Metal Brackets, Joseph Kevin Ryan
Student Theses, Dissertations and Capstones
Introduction: 3M Unitek (2724 Peck Rd, Monrovia, CA 91016) has recently released a new adhesive system labeled APCTM Flash-Free (APCTM FF) that pledges to eliminate flash removal from the orthodontic bracket bonding process. The company states that the bond strength of this new system is comparable to other adhesive systems such as APCTM PLUS. The purpose of this study was to evaluate the bond quality of APCTM FF by measuring excess adhesive, shear bond strength (SBS), microleakage penetration and adhesive remnant index (ARI) compared to APCTM PLUS. Methods: Eighty brackets were bonded on freshly extracted bovine permanent mandibular incisors as …
Clinical, Microbiological And Radiographic Comparison Of Two Treatment Strategies Of Peri-Implantitis, Genevieve Payne
Clinical, Microbiological And Radiographic Comparison Of Two Treatment Strategies Of Peri-Implantitis, Genevieve Payne
Student Theses, Dissertations and Capstones
Dental implants have revolutionized the world of dentistry since their discovery by Branemark (5). Millions of dental implants are being placed in the United States every year. Dental implants are the best option for many people to replace missing teeth in a predictable fashion. In spite of the high success and survival rates of dental implants, complications and failures can occur. Peri-implantitis generates an inflammatory response that involves both soft tissue inflammation and progressive loss of supporting bone beyond biologic remodelling (AAP consensus paper 2013 (2)). A recent meta-analysis by Decks in 2016 (13) reported the prevalence of peri-implantitis to …
Effect Of Ph And Recharge Protocol On Fluoride Release From Orthodontic Band Adhesives, Erica Kader
Effect Of Ph And Recharge Protocol On Fluoride Release From Orthodontic Band Adhesives, Erica Kader
Student Theses, Dissertations and Capstones
Objective: This study evaluated the release of fluoride from orthodontic band adhesives before and after exposure to fluoride varnish (FV), MI Paste (MIP), MI Paste Plus (MIPP), or no application, in neutral and acidic solutions. Background: White spot lesions (WSLs) occur in 73% of orthodontic patients. WSLs occur as a result of plaque accumulation, which leads to increased acidity of the oral cavity and subsequent enamel demineralization. Topical fluoride is frequently used as therapy for WSLs, in the form of toothpaste, mouth-rinse and varnish. In an effort to reduce demineralization around fixed appliances, fluoride-releasing adhesives have been employed, including glass …
Comparison Of The Microgap Between Titanium And Modified Zirconia Abutments After Cyclic Loading: A Pilot Study, Serafeim Kallithrakas
Comparison Of The Microgap Between Titanium And Modified Zirconia Abutments After Cyclic Loading: A Pilot Study, Serafeim Kallithrakas
Student Theses, Dissertations and Capstones
Comparison of the microgap between titanium and modified zirconia abutments after cyclic loading: A pilot study Purpose: Dental implants have been a common treatment modality for the replacement of missing teeth. Dental abutment is the implant component that connects the implant fixture to the restoration. Many studies have evaluated the mechanical properties and biological behavior of titanium and zirconia abutments. Recently, a modified zirconia abutment, consisting of a titanium insert in the interface with the implant fixture, was developed. The purpose of this study is to compare the microgap between CAD/CAM titanium abutments and CAD/CAM modified zirconia abutments after cyclic …