Dental Technology Research Articles

Poboljšana adhezija akrilnih adheziva sa zubnim tkivom uz dodatak čestica na bazi aluminijum oksida

Composite materials based on acrylate UV-cured polymers (Bis-GMA/TEGDMA) as a matrix and reinforcements that can be selected in order to adjust the properties of the obtained composite are used in the field of dental technology. The role of reinforcement is to adjust the mechanical properties, but also to control the shrinkage during curing. As reinforcement, alumina particles doped with iron oxide (Al2O3 Fe) synthesized using the sol-gel technique were selected. In order to simulate the process of adhesive application in real conditions, in vitro testing technique and adhesion properties of synthesized adhesive were used, where tooth tissue was used as a substrate. Comparison with standard adhesives used in dentistry was used to compare adhesion. The quality of the adhesive joint was evaluated using the microhardness testing method using different loads where it is estimated how the adhesive makes a connection with the substrate. It was shown that the synthesized adhesive showed significantly enhanced adhesion compared to the standard adhesive used in dentistry (836%).

Assessment of Internal Fitness on Resin Crown Fabricated by Digital Light Processing 3D Printer

Background: Recently, three-dimensional (3D) printing has been hailed as a disruptive technology in dentistry. Among 3D printers, a digital light processing (DLP) 3D printer has certain advantages, such as high precision and relatively low cost. Therefore, the latest trend in resin crown manufacturing is the use of DLP 3D printers. However, studies on the internal fitness of such resin crowns are insufficient. The recently introduced 3D evaluation method makes it possible to visually evaluate the error of the desired area. The purpose of this study is to evaluate the internal fitness of resin crowns fabricated a by DLP 3D printer using the 3D evaluation method. Methods: The working model was chosen as the maxillary molar implant model. A total of 20 resin crowns were manufactured by dividing these into two groups. One group was manufactured by subtractive manufacturing system (PMMA), while the other group was manufactured by additive manufacturing system, which uses a DLP 3D printer. Resin crowns data were measured using a 3D evaluation program. Internal fitness was calculated by root mean square (RMS). The RMS was calculated using the Geomagic Verify software, and the mean and standard deviation (SD) were measured. For statistical analysis, IBM SPSS Statistics for Windows ver. 22.0 (IBM Corp., USA) was used. Then, independent t-test was performed between the two groups. Results: The mean±SD of the RMS were 41.51±1.51 and 43.09±2.32 for PMMA and DLP, respectively. There was no statistically significant difference between PMMA and DLP. Conclusion: Evaluation of internal fitness of the resin crown made using a DLP 3D printer and subtractive manufacturing system showed no statistically significant differences, and clinically acceptable results were obtained.

Controversed aspects regarding polymerization in dental technology

Controversed aspects regarding polymerization in dental technology

Patient Perceptions of New Robotic Technologies in Clinical Restorative Dentistry.

Patient perception research has failed to focus on burgeoning technology within the dental field. Specifically, researchers have yet to focus on developing robotic technologies which are being utilized by dentists to help perform certain procedures with added precision and route mapping. The current study attempts to fill the gap created by a lack of intersection between dental technology research, consumer perceptions research, and automation research. The current research takes a two-study approach, with study 1 investigating if gender or price of the procedure affects willingness to undergo a robotic dental procedure. Study 2 further investigates this phenomenon, identifying ten separate types of dental procedures (ranging from minimally invasive to extremely invasive) to further understand consumer perceptions. Results indicate that females are less willing to undergo a robotic dental procedure, and that participants in general are more willing to undergo a procedure if it is half price than if it full price. Willingness is influenced by gender and the type of procedure being performed - participants were less willing to undergo invasive procedures such as gum surgery than noninvasive procedures such as teeth whitening. These results, and their theoretical and practical significance are discussed.

Diş Hekimliği Eğitiminde Beceri Kavramı: 21. Yüzyıl Becerileri

Amaç: Diş hekimliğinde beceri kavramı; akla mesleki becerileri getirir. Oysa ki; mezun diş hekimlerinin sadece klinik beceri kazanmakla kalmayıp, topluma iyi hizmet sunabilmek için - iletişim, düşünme ve problem çözme, takım çalışması gücü, hayat boyu öğrenme ve bilgi yönetimi, girişimcilik, etik, ahlak ve profesyonellik ve liderlik gibi - 21. yüzyıl becerilerine sahip olmaları da gerekir. Hekimlerin etkili uyum becerisine sahip olması durumunda, hasta memnuniyetinin ve tedaviden sağlanan faydanın arttığı; hasta anksiyetesinin ve hasta şikayetlerinin azaldığı bilinmektedir. Diş hekimlerinin tedavi uygulamalarında güncel bilgi ve becerileri yakalamaları, zor tedavi planlamalarını başedebilmeleri, çalışma ortamlarındaki işbirlikçi çalışmaya uyum sağlamaları açısından da uyum becerilerinin önemi büyüktür. Yetkin mezunların yetiştirilmesi için fakültelerin müfredatlarında uyum becerisi eğitimine de yer vermeleri beklenir. Anahtar kelimeler: diş hekimliği eğitimi, beceri eğitimi, 21. yüzyıl becerileri.

Mechanical Test of Aluminum-Zirconium-Silicate Composite Prototype with Filler Volume Variation

Recently, ceramic material has become a main object of scientific interest especially in dental material. The advance of dental materials technology has led to use of zirconia-based ceramics for composite filler. In this study, composite filler has been synthesized from natural zircon sand through geopolymerization method. Composite prototype were made with different filler volume to evaluate mechanical properties including hardness number and diametral tensile strength. Samples divided into two groups with 50 wt% filler volume (group A) and 75 wt% filler volume (group B) which 3 samples for each group. The surface micro hardness of each group tested by Leco M-400-H1 vickers microhardness testing machine and for diametral tensile strength tested using universal testing machine (Lloyd) with crosshead speed of 1,0 ± 0,25 mm/min. The data were analyzed using independent sample t-test. The results showed that the average of hardness number on group A was 13,8 VHN while for group B was 24,1 VHN. The average of diametral tensile strength for group A was 20,461 MPa and 27,689 MPa for group B. Statistical result showed that the value (P<0,05). The conclusion, there is a signifficant difference on the result of hardness test between group A (50 wt% filler volume) and group B (75 wt% filler volume) and also on diametral tensile strength test.

Summer Internship Training for Students in First Year from the Dental Technology Undergraduate Programme – Theoretical and Practical Aspects

Abstract The summer internship was and is a mandatory learning stage for all students of medical specialties in Romania, including students of dental medicine and dental technology programs. Thus, we have made a very interesting study, strictly related to the summer internship for the students from the first year of this specialty, which operates in one of the universities with medical profile in Bucharest.

A Study on the Need for Improvement of Digital Education(CAD/CAM) in Dental Technology Curriculum

A Study on the Need for Improvement of Digital Education(CAD/CAM) in Dental Technology Curriculum

АНАЛИЗ КОМПЛЕКСНЫХ СУДЕБНО-МЕДИЦИНСКИХ ЭКПСЕРТИЗ ПРИ НЕДОСТАТКАХ И НЕБЛАГОПРИЯТНЫХ ИСХОДАХ ЭНДОДОНТИЧЕСКОГО ЛЕЧЕНИЯ ЗУБОВ

Subject. One of the urgent problems of modern health care is to provide quality and effective dental care. The percentage of complications as a result of deficiencies in the provision of dental care, leading to the development of serious pathologies and deteriorating the quality of life of patients is growing every year. High rates of emergence of new technologies in dentistry, new dental materials and equipment do not always allow each practicing dentist to achieve a high professional level of assistance when working with new methods and means of treatment of caries and its complications. In this regard, endodontic care is not provided at the proper level. Goal. A retrospective analysis of medical documentation (comprehensive examinations) was conducted to identify the incidence of medical care deficiencies and adverse outcomes in endodontic dentistry. Methodology. A retrospective analysis of 19 complex forensic examinations was carried out to identify the frequency of deficiencies in medical care and adverse outcomes in endodontic treatment of teeth. Results. It was found that the most common shortcomings in the endodontic treatment of teeth are the lack of x-rays before and after endodontic treatment, removal of filling material for the apex of the tooth, non-compliance with the rules of asepsis and antiseptics in the treatment of patients, unjustified removal of dental pulp. Findings. A retrospective analysis of adverse outcomes in endodontic dentistry according to comprehensive examinations revealed significant deficiencies at the stages of diagnosis and treatment, which led to medical errors and further legal proceedings.

A Study on The Importance of Self-directed Learning on Career-preparation Behavior of Department of Dental Technology Students

A Study on The Importance of Self-directed Learning on Career-preparation Behavior of Department of Dental Technology Students

The effects of factors of major commitment on the decision of academic dropout of the dental technology students of K university

The effects of factors of major commitment on the decision of academic dropout of the dental technology students of K university

Analogical and Digital Workflow in the Design and Preparation of the Emergence Profile of Biologically Oriented Preparation Technique (BOPT) Crowns over Implants in the Working Model.

The Biologically Oriented Preparation Technique (BOPT), developed by Ignacio Loi and published in 2008, is a consolidated concept in the modeling and preservation of pericoronal soft tissues. The present study describes the analogical and digital methods allowing adequate design and preparation of the emergence profile of BOPT crowns in the working model, with a view to comparing the workflow and advantages of each method. At present, not all the digital procedures have been fully optimized to completely replace the traditional analogical methods. Nevertheless, it is only a matter of time until dental digitalization technology totally replaces the analogical clinical methods. The digital workflow for this procedure is quickly implemented and optimized, and represents the most realistic option, with possibilities for further development in the immediate future.

PATTERN OF DEMAND FOR MAKING DENTURES AT DENTAL LABORATORY IN SURABAYA CITY, INDONESIA

Background: Dental laboratory in Surabaya frequently make various kinds of the denture. But surely there is a case that was the most commonly accepted, to adjust to the needs of dental laboratories on the priorities of the work was done, it was necessary to give attention to the case that many common and must be taught to students Dental Technology. Purpose: To find an overview of the number the dentures received by the dental laboratory in Surabaya from 2013 until 2017. Methods: The data used is secondary data from a dental laboratory in Surabaya from 2013 to 2017. Result: A request for flexible and RPDs porcelain, acrylic resin and metal in 5 years obtained tend to be stable in high demand, even ina given year a sharp increase in RPDs flexible and drastic decline on fixed porcelain denture. Instead of facing acrylics, fixed denture tends to stabilize at its lowest during the period. While the acrylic RPDs has increased significantly in the last two years, in contrast to metal frame dentures, which decreased at two years latest. Conclusion: Flexible denture significantly better than with acrylic resin conventional denture on parameters taken in this research. Fixed porcelain denture are mostly made by a dental laboratory when compared with a removable partial denture acrylic resin.

Production of Dental Separating Medium using Tapioca extracted from Manihot esculenta in Enugu, Nigeria

Tapioca is a starch extracted from the root of the cassava plant (Manihot exculenta). Cooks and bakers rely on it for baking and for soup thickener but in dentistry the appropriate mixture in weight and volume of starch, water, glycerin and ethyl alcohol forms separating medium. A separating medium prevents direct contact between the denture based resin and the model surface. This study aimed at production of dental separating medium using tapioca extracted from Manihot exculenta in Enugu, Nigeria. The research was carried out between August and September, 2018 in Enugu, Nigeria. The study adopted a three phased experimental approach using the same procedures but different weight and volume compositions. Structured, pretested Product Evaluation Data Sheet was used to evaluate the product by selected Practicing Dental Technologists in Enugu State, Nigeria. The resultant separating medium from experiment III with the following composition: starch flour 1200g, glycerin 500ml, ethyl alcohol 500ml, colorant 500ml and 4000ml of distilled (hot and cold) water. There was significant agreement among the respondents in the flow ability of the product 8(40%); excellent product effectiveness 8 (40%); smoothness 8 (40%), and color stability of the product 10 (50%). These findings suggests that dental separating medium can be produced locally in Enugu, Nigeria. Therefore, more attention needs to be paid in the production process, which will facilitate easy practice of Dental Technology, and also conserve huge foreign exchange being spent in the importation of separating medium in Nigeria.

A Study of the Effects of Motive, Expectation and Satisfaction upon the Participation Level or the Students of the Advanced Course for Bachelor of Dental Technology

A Study of the Effects of Motive, Expectation and Satisfaction upon the Participation Level or the Students of the Advanced Course for Bachelor of Dental Technology

Influences of Interpersonal Relations Competency of University Students of Dental Technology on Their Smartphone Addiction

Influences of Interpersonal Relations Competency of University Students of Dental Technology on Their Smartphone Addiction

A Study on Some 4-year Dental Technology Students Perceptions of Field Learning Environment(FLE)

A Study on Some 4-year Dental Technology Students Perceptions of Field Learning Environment(FLE)

Virtual diagnostics and guided tooth preparation for the minimally invasive rehabilitation of a patient with extensive tooth wear: A validation of a digital workflow

The recent evolution of digital technologies in dentistry has enabled virtual 3D diagnostic analysis of a dentition before treatment, allowing for virtual, minimally invasive treatment planning. In this report, an extensively worn dentition was 3D virtual analyzed at an increased vertical dimension of occlusion. Virtual waxing (exocad DentalCAD; Exocad) and subsequent analysis of the need for minimally invasive preparations were performed. Areas of each tooth without adequate clearance for the minimal thickness of a definitive restoration (set at 1.5 mm in the software), including the amount of tooth substance to be removed (GOM Inspect; GOM), were visualized in color. A preparation guide was virtually designed according to this diagnostic plan (3-matic; Materialise) and 3D printed (Connex3 Objet260; Stratasys) from resin (VeroMagenta RGD851; Stratasys). The teeth were minimally prepared using the guide, and the amount of preparation was validated by superimposing the scan of the prepared model on the initial scan and comparing it with the diagnostic plan.

Influence of dental prosthetics technology on the dynamics of early predictors of destructive inflammatory process in the periimplant zone

An objective assessment of the morphofunctional characteristics of the state of soft tissues and bone structures adjacent to the dental implant allows to control the dynamics of the processes of osseointegration in the jaw-dental implant system. The aim of the work was to investigate the level of the β-CrossLaps, С-reactive protein (CRP), osteocalcin markers after orthopedic treatment of patients using dental implant supported advanced dental restoration technologies, to perform a biochemical analysis of the oral fluid of patients after restoration using dental implants and new two-part dental implants. In patients of the index group (52 people), the removable prostheses with metal frame and fixing elements or the commercially available dental implant supported removable prostheses were installed. For the patients of the control group (12 people), the commercially available dental implant supported removable prostheses of acrylic plastics were constructed. For all the patients after 6 months the level of β-CrossLaps, CRP, osteocalcin markers in the oral fluid was analysed. In patients of the index group, the average content of β-CrossLaps was 0.0126 ± 0.002 ng/ml, in the control group it was 0.0147 ± 0.002 ng/ml. The average content of the CRP in patients of the index group was 0.358 ± 0.019 mg/l, in patients of the control group it was 0.78 ± 0.01 mg/l. In patients of the index group, the average content of osteocalcin was 1.46 ± 0.25 ng/ml, in the control group it was 1.98 ± 0.31 ng/ml. It has been shown that biochemical markers of the oral fluid can be used to predict complications after the dental implants installation. Restoration with two-part dental implants of modern design is associated with fewer complications.

Analysis on the Importance of Dental Technicians' Basic Vocational Competency elements to Improve the Dental Technology Curriculum

Analysis on the Importance of Dental Technicians' Basic Vocational Competency elements to Improve the Dental Technology Curriculum