Umut Aslan

• Marmara University

Purpose: To analyze the micro-gap changes between hybrid abutment crowns made of two materials and three internal taper connection implants each having different connection designs before and after thermodynamic loading. Materials and methods: A total of 30 implants; ten each of Straumann Bone Level Implant-RC [STR]; GC AADVA Implant [AAD] and A...

A detailed assessment should be made of the patient’s medical anamnesis. Systemic and local complications should be evaluated. Medical anamnesis is followed by dental anamnesis. Some questions are used to learn about the dental history of the patient. The patient should be informed about the treatment initially after doing necessary planning by rev...

Bar-retained tooth and implant-supported restorations are the most popular type of prosthetic treatment, and their relevance has increased due to advances in implantology. A bar attachment—as compared to a stud attachment such as a Locator, O-Ring, Ball, or Magnet—provides greater prosthesis stability (ideal for a patient with a flat or atrophied r...

Objective: To evaluate the shear bond strength (SBS) of yttrium-stabilized tetragonal zirconia polycrystals bonded to titanium alloys via different surface treatment methods using four different cements. Methods: Eighty titanium and monolithic zirconia discs were prepared with computer-aided design/manufacturing (CAD/CAM) technology. All titanium d...

Objective: Novel strength-gradient monolithic zirconia is a developed material recently introduced to the market and its mechanical properties should be investigated in vitro. The aim of the study is to compare the wear rates of three different CAD/CAM materials with a chewing simulator after one year of dynamic loading. Methods: 7x7x3 mm discs wer...

Objective: The aim of this in vitro study is to evaluate the micro-gap changes in three dimensions after thermodynamic loading between hybrid abutment crowns made of different materials and implants with internal conical connection. Methods: A total of 10 morse cone connection implants (Straumann Bone Level Implant, Institut Straumann AG, Basel, Sw...

Objective: With the widespread use of CAD/CAM (computer aided design and manufacture) systems in dentistry, many restorative materials have been produced. In our study, we aimed to evaluate the change in optical properties of newly developed translucent monolithic zirconia (TMZ) (Cercon HT Dentsply, Sirona, USA), zirconia-reinforced lithium silicat...

Objectives: To evaluate the survival rate, failure, and clinical quality of all ceramic Onlay restorations retrospectively. Methods: Restorations placed during the period September 2010 - April 2021 at Marmara University Dentistry Faculty Department of Prosthodontics were included. Patients with parafunctional habits were excluded from the study. I...

Background: Bone reduction and shelf preparation is a common procedure to establish a new alveolar plane before implant surgery, which might effect the primary stability. Aim: Primary stability was questioned in terms of bone reduction and shelf preparation. The suitability of immediate loading was compared between the implants placed on crests,...

Purpose: To evaluate the 5-year results of the clinical and radiographic outcomes of three types of early loaded implants. Materials and methods: Seventy-five implants were placed in the posterior mandible or maxilla in 30 patients. Three types of implants (Straumann SLActive, Astra OsseoSpeed, and Thommen Implant System) were used. Definitive r...

Background: This study aimed to demonstrate that the material of the occlusal splint can be chosen according to the needs of individual patients and contribute to the knowledge of the wear rate of these materials. Methods: In this study, four occlusal splint materials (Sr Ivocap Heat Cured, Valplast, SR Ivocap Elastomer and Eclipse) and three an...

Background: This study aimed to demonstrate that the material of the occlusal splint can be chosen according to the needs of individual patients and contribute to the knowledge of the wear rate of these materials. Methods: In this study four occlusal splints materials (Sr Ivocap Heat Cured, Valplast, SR Ivocap Elastomer and Eclipse were selected. A...

Background: Over the last years, different intraoral scanning systems for direct digitalization have been introduced to the dental market. However, the accuracy of these scanners is variable, and little information is available. The aim of this in vivo study was to compare the accuracy of two intraoral scanning systems and the difference between up...

Background:Preparation depth of laminate veneers are essential in retention and structural integrity of restorations. The aim of this study was to evaluate the difference between a trained professional prosthodontist (PP) and a postgraduate prosthodontics student (PPS) in the preparation depth of laminate veneers by scanning the tooth with a 3D sca...

Objective: Over the last decades, techniques and materials have evolved with the improvement in digital technology. Computer-aided impressions have been transforming the dental implant field with these developments. The aim of this in vivo study was to compare the accuracy and time efficiency between two intraoral scanning systems in single tooth i...

Purpose: To report on the 10-year clinical treatment outcomes for a strictly applied clinical protocol for pressable lithium disilicate glass-ceramic laminate veneers (LDLVs) placed by two experienced dentists. Materials and methods: A 10-year follow-up assessment of 364 LDLVs placed in 41 patients was undertaken with the clinical criteria color...

Objective: To evaluate the clinical performance of hybrid ceramic inlay-onlay restorations over a 2-year period. Clinical considerations: A total of 30 lithium disilicate glass ceramic (LDC; control group) and 30 hybrid ceramic (HC; test group) inlay/onlay restorations were performed in 14 patients. Clinical evaluations were performed after 1 we...

Objective: To evaluate the clinical performance and the marginal adaptation of inlay/ onlay restorations made of lithium of a new lithium disilicate strengthened, lithium alumino-silicate glass-ceramic (LAS) material compared with a conventional lithium-disilicate glass-ceramic (LDS) and new-generation polymer-based CAD/CAM resin composite (CS) ma...

Objective: The purpose of this study was to compare volumetric dimensional accuracy and stability of polyvinylsiloxane, polyether and new formulated polyvinylsiloxanether impression materials by using micro-computed tomography.Methods: A total of 42 impressions were made of stainless steel metal dyes. Polyvinylsiloxane, Polyether and Polyvinylsilox...

Objectives: To evaluate the long-term clinical performance and survival rate of pressable lithium-disilicate glass-ceramic veneers (LDSVs). Materials and methods: A total of 413 LDSVs were bonded to anterior and posterior teeth by three experienced clinicians between 1998 and 2012. The LDSVs were examined for color/ esthetic match of the glass-c...

The aim of this study was to evaluate clinical and radiologic results up to 3 years in patients treated with early loading of anterior implants supporting single-tooth all-ceramic restorations. Twenty-four patients were treated with 29 screw-type implants in the anterior maxilla. The implants were evaluated by clinical and radiographic parameters....

While making an impression in an edentulous jaw, the most important problem is the degree of mobility of the soft tissues. This situation changes due to the thickness and hardness of the tissues, the amount of the loading, and the anatomical location. Since supporting areas display some changes while making an impression and the tissue response wil...

The purpose of this study was to evaluate the marginal adaptation and fracture load of ceramic laminate veneers on teeth with different preparation depths. A total of 75 extracted intact human maxillary central incisors were prepared with three different preparation depths (P) and assigned to the following five groups (n = 15): P1 (0.3-mm depth of...

The final try-in stage provides testing of the denture for the dentist and the patient and correction of the teeth arrangement. In this phase, the lack of doing changes and a sufficient review can cause an increase in the problems that will emerge after the delivery of the dentures, and even it may be necessary to remake the dentures. Try-in of a c...

The aim of fabricating a duplicate denture is to transfer the contour of the old dentures to the new dentures, so that the neuromuscular coordination of the patient is preserved. Thus, acceptable esthetic and function can be achieved without changing the patient’s adaptation to the new dentures. In this chapter, indications, duplication techniques...

Temporomandibular eklem (TME), morfolojik olarak kişi­den kişiye değişkenlik gösteren bir eklemdir. ‘Temporo­mandibular düzensizlik’ (TMD) terimi çiğneme kasları, temporomandibular eklem ve temporomandibular ekleme komşu dokuların çoğunlukla ağrılı, fizyolojik ve fonksiyon bozukluklarını ifade eder. Yeni tekniklerin bulunması ve özellikle bilgisaya...

Invention of new techniques and improvement of especially computer systems were provided better assessment of TMJ anatomy and functions. Pathophysiology of TMD was better understood with images associated clinical findings. Understanding of TMD's improvements were caused emergence of new treatment approaches. TMJ imaging techniques can be arranged...