Mutlu Özcan

University of Zurich | UZH · Faculty of Medicine

The aim of this study was to evaluate the effect of different gloves and clinical environment on the contamination of resin- matrix composites for restorative dentistry. Specimens of nano-hybrid resin-matrix composite (n = 6) were divided in groups regarding the handling with (A) clinical spatula; (B) latex gloves; (C) latex or (D) nitrile gloves w...

Purpose of Review: Advances in zirconia ceramics have expanded their application in dentistry, necessitating faster delivery of zirconia-based restorations. With the introduction of high translucency grades of zirconia ceramics, the rapid sintering strategies that aim to reduce processing times can have a central impact on clinically relevant prope...

Purpose: To investigate the effect of recycling of lithium disilicate (LD), surface treatment and thermocycling (TC) on the bond strength (SBS) to resin cement. Materials and methods: Blocks of LD were made according to the recycling cycle, with 24 blocks for each strategy: Control-conventional sintering; 1R (1 recycling cycle) and 3R (3 recycli...

Purpose of Review: With the introduction of new resin-based composites (RBC) based on their adjusted shade properties, there is a need for an additional classification for such materials. This review discusses and suggests a new classification for the RBCs. Recent Findings: The classification of RBCs depends on different compositions and character...

Purpose of Review: The restorative management of cracked tooth syndrome (CTS) is very complex and depends on the pre-restorative diagnosis and decisions. This review discusses the strategies for restoring teeth with CTS and suggests a related clinical decision tree. Recent Findings: CTS is the incomplete fracture of the natural tooth crown. Prepar...

Introduction: The aim of this systematic review was to assess the literature reporting on the failure rates, survival rates and complication rates and patient reported outcome measures (PROMs) of anterior full (FC) or partial (PC) coverage single tooth restorations after a mean observation period of at least 3 years. Methods: Systematic search w...

Objectives The aim of this systematic review and meta-analysis is to assess the comparative clinical success and survival of intracoronal indirect restorations using gold, lithium disilicate, leucite, and indirect composite materials. Material and methods This systematic review and meta-analysis were conducted following the Cochrane Handbook for S...

Objectives The objective of this investigation was to compare the clinical performances of nanohybrid and low-shrinkage bioactive resin composites. Materials and methods Totally, 35 pairs of restorations performed with either low-shrinkage bioactive Giomer (Beautifil II LS, Shofu Inc.) or nanohybrid (Clearfil Majesty Posterior) resin composites in...

Purpose of Review This narrative review aimed to offer evidence on 3-unit all-ceramic posterior inlay-retained prostheses (IRFDPs) with an emphasis on material choice and design principles. Clinical trials and in vitro studies were identified using an electronic search in PubMed database. Overall, 16 in vitro publications and 8 clinical trials were...

Purpose: The objective of this study was to determine the influence of different preparation designs on the fracture strength, failure type, repairability, formation of polymerization-induced cracks, and tooth deformation of structurally compromised molars restored with lithium disilicate inlays and overlays in combination with Immediate Dentin Se...

Objectives: Lithium disilicate (LDS) based glass ceramics are indispensable materials in the field of prosthetic dentistry due to their strength and excellent esthetics. Recently, novel fully crystallized LDS for the milling process have been introduced to the market, requiring only chairside polishing before delivery. Since limited data is availab...

Purpose The main aim of this study was to perform an integrative review on the effects of Erbium lasers irradiation on bacteria eradication and smear layer removal from dentin surfaces of tooth root canals. Method AbibliographicsearchwasperformedonPubMedusingthefollowingsearchterms:“ultrasonic”AND“Er:YAG”OR “Er,Cr:YSGG” AND “laser” AND “bacteria” O...

Objectives: This clinical trial evaluated the clinical behaviour of 3D printed posterior resin composite fixed dental prosthesis restorations. Materials and Methods: Between 10.10.2020 - 05.08.2022, forty-nine patients aged between 19 and 60 years old (33 females, 16 males) received 68 3D printed resin composite 3-unit posterior fixed dental prosth...

Statement of problem Polydopamine (PD) adsorbs on all kinds of surfaces by forming strong covalent bonds, and develops cohesive strength through self-polymerization, resulting on thin strong adhesive films. Thus, PD coating could be promising to improve the adhesion to the inert Polyetherketoneketone (PEKK). Purpose To analyze different protocols...

Objectives: To correlate CAD/CAM composite-dentin micro-tensile bond strength (µTBS) with film thickness (FT), Vicker`s hardness (HV) and ultimate-tensile strength (UTS) of photo- and dual-polymerized luting resins. Methods: For µTBS, human molars (N=30) were randomly divided into 6-groups according to: 1: Lutingresins [Bifix QM “BF” (dual-polymeri...

The objective of this work was to measure the tooth root canals’ diameter, remnant dentin thickness, endodontic post to dentin distance, and resin-matrix cement layer after three types of root canal shaping. Thirty extracted human premolars were endodontically treated and groups of specimens were divided according to the cementation with two differ...

To assess the clinical periodontal status of abutment teeth in regards of different design components of distal-extension removable partial dentures. Subjects (N=100) with acrylic or cobalt-chromium distal-extension removable partial dentures were enrolled and their periodontal parameters plaque and gingival indices [PI, GI], probing depths [PD], c...

Aim: To evaluate the influence of resin cement on the color stability of lithium disilicate and zirconia restorations immersed in coffee after aging. Materials and methods: Eighty maxillary premolars were classified into eight groups (n = 10) based on restorative material type (lithium disilicate or zirconia), resin cement type (G-CEM LinkForce;...

Indirect restorations made of resin composite materials are increasingly used yet there is no consensus in the literature on how different luting strategies influence the bond strength. The aim of this was to study the influence of luting strategy and aging on the adhesion of indirect restorations on dentin. Bovine incisors (N = 120) received conic...

Statement of problem: One of the major challenges in restorative dentistry is to provide optimal esthetics in a minimally invasive way. The optimization of dental esthetics and function is directly related to the position and alignment of the anterior teeth, but whether prerestorative clear aligner therapy will enhance esthetics and minimize resto...

Surface modification of yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) using lasers for adhesion enhancement with resin-matrix cement has been increasingly explored. However, Y-TZP is chemically inert and non-reactive, demanding surface modification using alternative approaches to enhance its bond strength to resin-matrix cements. The m...

Purpose: With an increase in patients’ aesthetic demands and advancements in dental technologies, tooth-colored materials have grown in popularity. This study aimed to statistically analyze the scientific output of zirconia. Methods: Articles published between 1980 and 2021 were downloaded from the Web of Science database and analyzed using various...

Objective The purpose of this study was to perform an integrative review on laser texturing the inner surface of lithium disilicate-reinforced glass ceramic or zirconia to increase their bond strength to resin-matrix cements. Materials and method A bibliographic review was performed on PubMed using the following search terms: “zirconia” OR “lithiu...

Statement of problem: Mastication forces in different regions affect the survival of multiunit posterior restorations. The fracture strength of 3-unit posterior monolithic zirconia fixed partial dentures (FPDs) and their fracture patterns require investigation. Purpose: The purpose of this in vitro study was to evaluate and compare the fracture...

The long-term success of ceramic laminate veneers (CLVs) is influenced by the marginal and internal fit of the restorations. However, studies comparing the fit of CLVs using different intraoral scanners or the indirect digitization technique are lacking. The purpose of this study was therefore to assess the marginal and internal fit of CAD/CAM-mill...

Purpose: This study aimed to assess the layer thickness and microstructure of traditional resin-matrix cements and flowable resin-matrix composites at dentin and enamel to composite onlay interfaces after cementation on low loading magnitude. Materials and methods: Twenty teeth were prepared and conditioned with an adhesive system for restoratio...

Objectives: The objective is to evaluate the long-term clinical survival and performance of direct and indirect resin composite restorations replacing cusps in vital upper premolars. Methods: Between 2001 and 2007, 176 upper premolars in 157 patients were restored with 92 direct and 84 indirect resin composite restorations as part of an RCT. Inc...

The current study investigated the effect of boric acid (H3BO3) nanosized powder on the optical properties of a Computer-Aided Design and Computer-Aided Manufacturing (CAD-CAM) polymer infiltrated ceramic material. Specimens (n = 60), (15 × 8 × 1.5 mm 3) were fabricated from a polymer infiltrated ceramic network (PINC) (Vita Enamic, Vita Zahnfabrik...

This study investigated the marginal and internal fit and retention of crowns fabricated using four different castable pattern production methods, namely plastic burn out coping, CAD-CAM milled, CAD-CAM additive, and conventional. This study consisted of five groups including two different brands of burn out coping groups (Burn out -Straumann (Burn...

In dentistry, clinicians mainly use dual-cured or light-cured resin-matrix cements to achieve a proper polymerization of the organic matrix leading to enhanced physical properties of the cement. However, several parameters can affect the polymerization of resin-matrix cements. The main aim of the present study was to perform a scoping review on the...

In order to reduce the loosening of dental implants, surface modification with hydroxyapatite (HA) coating has shown promising results. Therefore, in this present study, the sol-gel technique has been employed to form a tantalum and strontium ion-doped hybrid HA layer coating onto the titanium (Ti)-alloy substrate. In this study, the surface modifi...

The aim of this study was to compare bond strength resin composites to porcelain laminate veneers in the indirect repair method to composite resins used in the direct repair method for cases of porcelain veneer fracture of zirconia-based fixed dental prostheses. In the study, the groups were formed with different percentages of areas to be repaired...

Purpose: To evaluate the effect of finish line design (chamfer and feather-edge) and ceramic type on the internal and marginal fit of fixed partial dentures on abutment teeth. Materials and methods: Two typodont mandibular casts, missing right first premolar tooth, received tooth preparation on canine and second premolar abutments (one cast with...

The objective of this work was to measure the tooth root canals’ diameter, remnant dentin thickness, and the endodontic post-to-dentin distance after three types of root canal preparation. Thirty extracted human premolars were endodontically treated and groups of specimens were divided according to the cementation with two different endodontic post...

Purpose To measure the wear at the implant interface between the Grade 4 titanium (Ti) of the implant and frameworks fabricated using two additively manufactured alloys (Ti alloy and cobalt–chromium [Co–Cr]) pre‐ and post‐artificial aging. Material and methods Three‐unit frameworks supported by two implants were additively manufactured (Atlantis;...

Objectives: The aim of this study was to compare the shear bond strength of relined CAD-CAM complete removable dental prosthesis (CRDP) resins with conventional heat-polymerized polymethylmethacrylate (PMMA) resin. Methods: A total of 96 resin specimens in identical dimensions of 10 mm × 10 mm × 11 mm were fabricated for four study groups [#1- Conv...

Aim: The aim of this study was to compare the load bearing capacity of monolithic or bilayered single crowns with zirconia or polyetherketoneketone frameworks designed and fabricated using computer-aided design/computer-aided manufacturing (CAD/CAM) systems. Materials and methods: Cr-Co -based metal dies (N=60) were duplicated from an extracted...

Objectives The aim of this retrospective clinical study was to determine the survival of extensive direct resin composite restorations after amalgam replacement on vital molars and premolars after a mean observation period of 15 years. Methods Between January 2007 and September 2013, a total of 117 extensive cusp replacing direct resin composite r...

Purpose To investigate wear properties, translucency, colour, and fracture resistance of restorations milled from fully crystalized and partially crystallized lithium disilicate CAD/CAM ceramic blocks. Methods Thirty rectangular-shaped specimens were sectioned from two types of Lithium disilicate CAD/CAM blocks: LiSiCAD (n=20) and EmaxCAD (n=10)....

Objectives To evaluate and compare fracture resistance, translucency, and color reproducibility, as well as the effect of aging on the fracture load and color stability of novel monolithic CAD/CAM ceramics. Materials and methods One hundred crowns of uniform thickness were milled from five ceramic blocks ( n = 20): partially crystallized lithium d...

This study evaluated the clinical performance of low-shrinkage bioactive resin composite compared with a conventional nanohybrid resin composite. A total of 35 patients (18 males, 17 females; mean age: 29±9 years old) received, randomly, 35 pairs of fillings restored with either low-shrinkage bioactive material employing Giomer filler technology (B...

The purpose of this study was to perform an integrative review on the effects of cranberry and grape seed extracts concerning the disinfection of root canals maintaining the strength of the remnant tooth tissues’ structure. A bibliographical search was carried out on the PubMed electronic platform using the following key terms: cranberry, grape see...

Objectives: The aim of this randomized clinical trial was to compare selective removal to soft dentin (SRSD) and selective removal to firm dentin (SRFD) in permanent teeth. The primary outcome of the study was to compare the success rates of the two caries removal techniques. The secondary outcome of the study was to investigate whether or not cal...

Statement of problem: Selective laser melting has been increasingly used in the fabrication of metal-ceramic prostheses. The longevity of the prostheses depends on the strength of the metal-ceramic bond, which may differ with the framework manufacturing technique. Purpose: The purpose of this in vitro study was to compare the bond strength of ce...

Objectives Large part of the tooth is required to be removed during crown preparation. A minimally invasive method for preparing single crowns is required to increase the durability of teeth. The aim of this study was to evaluate the clinical performance of two ceramic systems fabricated with minimally invasive vertical preparation. Materials and...

The main aim of this study was to perform an integrative review on the toxic effects of resin-matrix cements and their products in contact with fibroblasts or mesenchymal cells. A bibliographic search was performed on PubMed using the following search terms: “cytotoxicity” AND “fibroblast” OR “epithelial” OR “mesenchymal” AND “polymerization” OR “d...

Purpose: The purpose of this in-vitro study was to investigate the effect of framework design on fracture resistance and failure modes of cantilever inlay-retained fixed partial dentures (IRFDPs) fabricated from two multilayered monolithic zirconia materials. Materials and Methods: Seventy-two natural premolar teeth were prepared as abutments for c...

Autologous bone remains the gold standard bone substitute in clinical practice. Therefore, the microarchitecture of newly developed synthetic bone substitutes, which reflects the spatial distribution of materials in the scaffold, aims to recapitulate the natural bone microarchitecture. However, the natural bone microarchitecture is optimized to obt...

The effects of different heights of ti-base abutments on the color of anterior screw-retained zirconia restorations fabricated using computer-aided design and computer-aided manufacturing (CAD-CAM) technologies may affect the optical clinical outcome. The purpose of this study was to measure and compare the color parameters of zirconia crowns in di...

Purpose: To evaluate the effect of photo-polymerized composites and universal adhesive modes on µ-tensile bond strength (µTBS) of a CAD/CAM composite to dentin. Material and methods: Human molars (N=60) were randomly assigned to 12 groups (n=5 teeth/group) according to the two experimental factors, Factor 1: Luting resin [Bifix QM “BF”, Grandio flo...

Background: The aim of this split-mouth design research was to compare the clinical performance of a glass-ionomer cement system on Class I/II cavities against the clinical performance of bulk-fill resin composite restoration materials. Methods: Thirty-five patients were randomized and enrolled in the study, aged between 10 and 12 years, all of...

Objective: Tooth enamel has opalescence and fluorescence, which should be mimicked by esthetic dental restorations. The purpose of this study was to compare the effects of glazing and polishing on the opalescence and fluorescence of dental ceramics. Materials and methods: Twenty-four discs were fabricated of feldspathic, IPS e.max, zirconia, and...

Statement of problem: Studies on the microhardness of novel additively manufactured polymers compared with well-established low- and high-viscosity composite resins with regard to chemical composition are lacking. Purpose: The purpose of this in vitro study was to evaluate the effect of hydrothermal aging on the microhardness of various conventi...

Purpose of Review Graphene is introduced in dentistry as a material to be used in the fabrication or coating of dental implants due to its biocompatibility, ability to physically interact with biomolecules and very high surface area. This review highlights the current knowledge on the general properties of graphene, potential benefits especially wh...

Purpose: To evaluate the effect of two surface conditioning methods, namely conventional hydrofluoric acid vs self-etching primer, and the application of adhesive on the bond strength of resin cement to CAD/CAM glass-ceramics. Materials and methods: Blocks (N = 96) (12 x 10 x 2.5 mm) were manufactured, 24 for each tested ceramic type: lithium si...

Due to an increase in prevalence of cervical lesions, it is important to use appropriate restorative materials to reduce the incidence of secondary lesions. Owing to having antibacterial properties, cervical composite restorations containing different ratios of Zinc Oxide nanoparticles (ZnO NPs) have been analyzed using the Finite Element method to...

Purpose: To measure the flexural strength and Weibull characteristics of aged and non-aged printed interim dental material fabricated with different layer thickness. Material and methods: Bars (25×2×2 mm) were additively fabricated by using a polymer printer (Asiga Max) and an interim resin (Nexdent C&B MFH). Specimens were fabricated with the s...

Purpose: This pilot study was part of a larger study planned for the future which aimed to compare the clinical success of two different resin cements used in the cementation of CAD/CAM single-retainer monolithic zirconia ceramic resin-bonded fixed dentures (RBFPDs). Methods: Twenty-four RBFPDs were fabricated with monolithic zirconia (Katana™ Z...

Objectives This study evaluated the surface integrity of two types of diamond burs and their effect on the roughness of different CAD/CAM materials. Materials and methods CAD/CAM materials, Vita Mark II (VM), IPS e.max CAD (EM), Celtra Duo (CD), G-Ceram (GC), and Lava Ultimate (LU) blocks were milled with CEREC MCXL. Five pairs of pointed cylinder...

Statement of problem Interim dental restorations can be fabricated from additively manufactured ingots. However, the flexural strength and surface roughness of restorations fabricated by using this technique are unknown. Purpose The purpose of this in vitro study was to assess the influence of the manufacturing method (milling, additive manufactur...

Stress-shielding is caused by a significant mismatch in stiffness between bone tissue and Ti alloy dental implants. Therefore, in this study, a Ti-PEEK composite implant was examined and compared with conventional titanium, to determine the behavior of the host bone. Twelve 3D finite element models were modeled with two conditions of marginal corti...

Purpose The objective of this study was to perform an integrative review on the effect the inorganic fillers on the light transmission through the resin-matrix composites during the light-curing procedure. Method A bibliographic review was performed on PubMed using the following search terms: “fillers” OR “particle” AND “light curing” OR “polymeri...

Objectives To investigate the longevity of direct composites for Class IV restorations and the possible reasons of failure. Methods and Materials The longevity of 168 Class IV restorations in 50 adult patients was evaluated, in terms of modified United States Public Health Service criteria, for 4 years. Restorations were performed using a monochro...

Einleitung und Ziel Der Einsatz monolithischer Vollkeramikkronen hat in den letzten Jahren gegenüber Verblendversorgungen beständig zugenommen. Idealerweise sollte monolithisches Keramikmaterial eine hervorragende ästhetische Qualität und ausreichende Festigkeit aufweisen, um den Kaubelastungen standzuhalten. Glaskeramik bietet eine hervorragende Ä...

Statement of problem Even though polyetheretherketone (PEEK) has become popular for various prosthetic indications, a standard adhesive protocol to bond the PEEK to titanium bases has not been yet established. How the heat-pressing technique performs in this respect is also not clear. Purpose The purpose of this in vitro study was to investigate t...

Acid-etching is one of the most popular processes for the surface treatment of dental implants. In this paper, acid-etching of commercially pure titanium (cpTi) in a 48% H 2 SO 4 solution is investigated. The etching process time (0–8 h) and solution temperature (25–90 °C) are assumed to be the most effective operational conditions to affect the su...

Statement of problem Additive manufacturing procedures for fabricating interim restorations include rinsing postprocessing procedures. However, the impact of different rinsing solutions and times on flexural strength is unknown. Purpose The purpose of this in vitro study was to assess the influence of the rinsing solutions and duration, as well as...

Purpose: To identify the most effective cleaning method for saliva-contaminated zirconia surface before adhesive cementation through a systematic review and meta-analysis. Materials and methods: PubMed, Scopus, and Web of Science databases were searched to select in vitro studies published through October 2021. Studies that did not perform aging...

This clinical study evaluated the survival of monolithic lithium disilicate (ML) (IPS Emax, Ivoclar Vivadent) restorations bonded to complete-arch CAD/CAM made titanium or zirconia frameworks. Between August 2007 and December 2009, 15 patients (7 female, 8 male; mean age: 56.8 years old) received 30 implant-supported screw-retained rehabilitations...

This study evaluated the clinical performance of implant supported, extra-orally cemented, monolithic zirconia crowns after a follow-up to 18 months. Thirty-one patients with 50 posterior dental implants were consecutively selected for this study. A total of 50 crowns were cemented onto titanium abutments extra-orally and then screwed to the implan...

Purpose: To perform a scoping review on the available literature regarding the side effects of sodium lauryl sulfate (SLS) used in toothpastes. Methods: A scoping review was performed according to the PRISMA extension using PubMed. The electronic search was supplemented with a manual search for a complete overview. A customized data collection f...