bluuebunny/crossref_metadata_2025 huggingface dataset:
The Diversity of the Field of Social Enterprises – The Case of the Czech Republic
Authors: Hrůzová Lucie
Published: February 2024

Social enterprises have been experiencing a worldwide boom in the last decades. The mix of aspects of the nonprofit and for-profit world that is essential to social enterprises creates a unique space for them to address the targeted social issues. However, their broad concept embraces a range of organizations that can fulfil diverse roles and operate in different fields. The Czech Republic is one of the countries where social enterprises have only recently started to develop. Moreover, there is still a lack of knowledge of what the field of Czech social enterprises encompasses. The aim of this article is, therefore, to shed light on the current state of the field. The description of the current social enterprise environment supplemented by the data of Czech social enterprises collected through the various databases will be put in the context to the findings of the relevant foreign literature and compared.
Mengembangkan Kognitif Anak Usia 4-5 Tahun dengan Permainan Gerbong Angka
Authors: Ahmad Fachrurrazi  , Rizka Dwi Kurniawati
Published: March 2024

Number carriage game which is a simple math learning activity that is easy to play and can solve or find the sum of the results provided by the educator. The purpose of this study is to describe the results of cognitive development in totaling to group A PAUD KIA-KIRA Sedati Sidoarjo. The data analysis technique uses 3 stages, namely data reduction; data presentation; and conclusions or verification. Then triagulation and validity are carried out. The group studied was Group A (ages 4-5 years) totaling 14 students. Data was collected from the results of observation sheets and field notes.The results showed that the cognitive development of group A PAUD KIA-KIRA in adding up with the numbers carriage game at the stage of development as expected (BSH) but on the indicator symbol of numbers at the stage began to develop (MB). Factors that support the implementation of the number car play activities, namely students who are enthusiastic to play even though there are some who are not familiar with numbers and homeroom teacher support is always helpful while the inhibiting factor is the cognitive ability to read the symbols of student numbers is still lacking, because the media at school is lacking inadequate as well as the lack of creativities educator makes educational props tools (APE).
Determinant and Impact of Left Ventricular Hypertrophy (LVH) in Chronic Renal Failure (CRF) Patients
Authors:   Nephrology Department, CHU- Kara, University of Kara, Togo, Yawo Amekoudi Eyram Makafui Yoan , Akomola Sabi Kossi ,   Nephrology and Hemodialysis Department, CHU-Sylvanus Olympio, University of Lomé, Togo, Bakai Abalo Mario ,   Cardiology Department: CHU Kara, University of Kara, Togo
Published: February 2024

Left ventricular hypertrophy is the most common cardiovascular complication in chronic renal failure. It appears to be associated with excess mortality. Objective: To determine the factors associated with left ventricular hypertrophy (LVH) in patients with chronic kidney disease (CKD), and to describe their influence on renal function. Patients and methods: This was a descriptive and analytical study conducted over 6 years (January 1, 2012 to December 31, 2017) on CKD patients who had an electrocardiogram or cardiac ultrasound. Results: A total of 329 patients were included. LVH was found in 223 patients, a prevalence of 68%. The sex ratio M/F was 2.1. Mean age was 51.05±14.17 years (range 11-95 years). Arterial hypertension predominated (97% of cases), followed by diabetes (26%).Univariate and multivariate analysis showed that LVH was associated with: age ≤51 years (p=0.0037) and with arterial hypertension (p=0.0018) and anemia (p=0.0018). Over a 5-year period, CKD patients with LVH experienced a more rapid decline in renal function than those without LVH (p<0.0001). There was also a higher rate of death in patients with LVH (83%) than in those without (46%) during a 5-year follow-up. Conclusion: LVH is an important factor in the poor prognosis of CKD. This calls for systematic screening and early management by a multidisciplinary team.
Double Intervention in a Patient with Large Patent Ductus Arteriosus (PDA) and Moderate Upper Muscular Ventricular Septal Defect (VSD) with Bidirectional Shunt with Severe Pulmonary Hypertension
Authors:   Congenital and structural Interventionist, Lab Aid Cardiac Hospital, Dhanmondi, Dhaka, Bangladesh, Nahar Fatema Nurun , Das Priyanka ,   Registrar, Pediatric Cardiology, BSH, Bangladesh
Published: February 2024

Patent ductus arteriosus (PDA) and Ventricular septal defect (VSD) are commonly encountered problems and constitute about 40% of all congenital heart lesions. The association of these two conditions in a single patient is not very uncommon. Both these conditions can be treated by placing intracardiac devices. Double interventional closure of Patent Ductus Arteriosus (PDA) and Ventricular Septal Defect (VSD) was performed in a gravely ill infant at her 3 months and 5 months of age respectively, who was suffering from recurrent pneumonia and heart failure since birth. These were lifesaving procedure for that patient which led to writing this report.
Importance of mental health in the sports environment
Authors: Arroyo Del Bosque Rubén , San Martín González Paula , Amatria Jiménez Mario
Published: March 2024

The objectives of this study are focused, firstly, on understanding the levels of cognitive anxiety, self-confidence, and pre- and post-match somatic anxiety. Secondly, to analyse the impact of the match outcome (win-loss) on the mentioned dimensions according to the Home-Away condition. The research involved 70 volleyball players (28 home and 42 away) belonging to cadet categories from different volleyball teams competing in the School Sports Program in the province of Araba, specifically in the city of Vitoria Gasteiz. Participants completed the Competitive State Anxiety Inventory in Sport (CSAI-2) (Martens et al., 1990), consisting of 27 items, adapted and validated in Spanish by Capdevila (1997), and subsequently reviewed and used by other researchers (Arruza et al., 2001; Telletxea, 2008). The results show that somatic anxiety significantly decreased between pre and post-match in the home condition, and there are significant differences between home players and away players in response to a victory outcome. The ability of coaches, monitors, and fitness trainers to understand and address athletes' anxiety states is crucial for optimizing their performance and overall well-being, as well as adherence to physical activity.
Minat Siswa Dalam Pembelajaran Olahraga Bulutangkis di Smp Satu Atap Reteh Kabupaten Iindragiri Hilir
Authors: Hamzah Hamzah
Published: March 2024

Abstrak: Masalah dalam penelitian ini yaitu rendahnya minat siswa dalam mengikuti pembelajaran olahraga bulutangkis, hal ini terlihat masih adanya siswa yang kurang bersemangat dan bahkan sering bermain-main didalm mengikuti pembelajaran bulutangkis. 

Jenis penelitian ini adalah penelitian deskriptif, adapun tempat penelitian ini adalah di SMP Satu Atap Reteh Kabupaten Indragiri Hilir, sedangkan waktu penelitian ini dilakukan pada bulan September. Sampel dalam penelitian ini adalah seluruh siswa Kelas VII di SMP Satu Atap Reteh yang berjumlah 30 orang, dengan teknik penarikan sampel yaitu menggunakan total sampling dimana seluruh populasi dijadikan sebagai sampel penelitian. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah angket dengan skala guutman dengan menggunakan dua alternatif  jawaban yakni Ya (1) dan Tidak (0). Sedangkan teknik analisa data yang digunakan adalah teknik analisis data deskriptif dengan rumus persentase.

Berdasarkan hasil analisis penelitian yang telah dilakukan, maka dapat disimpulkan bahwa Minat Siswa Dalam Pembelajaran Olahraga Bulutangkis Di SMP Satu Atap Reteh Kabupaten Indragiri Hilir, dengan persentase 78% dengan dikategorikan Tinggi, karena terletak pada interval 51% - 100%.
PERAN ORGANIZATIONAL CITIZENSHIP BEHAVIOR DENGAN JOB SATISFACTION STUDI KASUS: PT PERTAMINA LUBRICANTS-PRODUCTION UNIT CILACAP
Authors: Ashari Della Amaylia , Hermawan Iwan , Inayah Inayah
Published: March 2024

Organizational Citizenship Behavior (OCB) menjadi tantangan di dunia kerja saat ini, karena organisasi tentunya akan merasa senang apabila memiliki karyawan yang berperilaku OCB. Organisasi perlu memperhatikan karyawan serta dapat mengelola karyawan agar memiliki karyawan yang unggul tidak dimiliki oleh organisasi lain. Dalam hal ini juga akan menguntungkan bagi organisasi. Permasalahan yang terjadi di organisasi berkaitan dengan etos kerja seperti Â kedisiplinan. Maka dari itu, perlu membangun model OCB yang memberikan dampak Job Satisfaction di tempat kerja. Dalam rangka menyelesaikan permasalahan tersebut organisasi dapat memfasilitasi agar timbulnya etos kerja. Penelitian ini merupakan penelitian kuantitatif, dengan sampel sejumlah 138 responden Tenaga Alih Daya PT Pertamina Lubricants â€“ Production Unit Cilacap. Instrumen analisis regresi linier berganda dan data diolah menggunakan SPSS. Hasil pengujian empiris membuktikan bahwa dimensi OCB meliputi altruism, conscientiousness, courtesy, sportsmanship, dan civic virtue terbukti berpengaruh secara signifikan terhadap job satisfaction. Kontribusi studi ini menggunakan perspektif human capital theory dengan implikasi manajerial yang menekankan pentingnya membangun lingkungan kerja yang adaptif, membangun budaya koletivisme lebih baik dan meningkatkan spiritual di tempat kerja.
PENGARUH CAPITAL ADEQUACY RATIO (CAR), RETURN ON ASSET (ROA), DAN LOAN DEPOSIT RATIO (LDR) TERHADAP HARGA SAHAM PADA PERUSAHAAN PERBANKAN YANG TERDAFTAR DI BURSA EFEK INDONESIA TAHUN 2014-2021
Authors: Astuti Metyka Puji , Rahayu Sri , Suryatama Fajar
Published: March 2024

The share price is largely determined by the supply and demand for shares. This study aims to examine the effect of Capital Adequacy Ratio (CAR) on stock prices in banking companies listed on the Indonesia Stock Exchange in 2014- 2021, test the effect of Return On Assets (ROA), on stock prices in bankingcompanies listed on the Indonesia Stock Exchange For 2014-2021, test the effect of the Loan Deposit Ratio (LDR) on stock prices in banking companies listed on the Indonesia Stock Exchange for 2014-2021, and test the effect of Capital Adequacy Ratio (CAR), Return On Assets (ROA), and Loan Deposits Ratio (LDR) to stock prices in banking companies listed on the Indonesia Stock Exchange in 2014-2021.The analytical tool used in this study is multiple linear regression analysis with a total population of 46 banking companies listed on the Indonesia Stock Exchange. This study used a sample of 18 banking companies listed on the Indonesia Stock Exchange in 2014-2021 with a total of 144 data. The type of research used in this research is associative quantitative. Data processing using the SPSS version 23 program with data testing techniques classic assumption test, correlation test, regression test, coefficient of determination test, partial hypothesis testing (t test) and simultaneous hypothesis testing (F test).The results of the analysis of the Capital Adequacy Ratio (CAR) variable yield tcount (-0.114) > ttable (-1.97705), then H0 is accepted and Ha1 is rejected and the significance value is (0.909 > 0.05). The results of the analysis of the Return On Assets (ROA) variable yield tcount (4.743) > ttable (1.97705), then H0 is rejected and Ha2 is accepted and the significance value is (0.000 <0.05). The results of the analysis of the Loan Deposit Ratio (LDR) variable yield tcount (-0.243) < ttable (- 1.97705), then H0 is accepted and Ha3 is rejected and the significance value is (0.808 > 0.05). Based on the F test, the results of Fcount were 7.557 > Ftable 2.67 with a significance level of 0.000 <0.05, so it was concluded that H0 was rejected and H1 was accepted.Keywords : Stock Price, Capital Adequacy Ratio CAR), Return On Assets (ROA), Loan Deposit Ratio (LDR)
Putting the Associative Actor to the test in Tourism: Comparative Study of two Rural Communes, Asrir in the Province of Guelmim and Tighdouine within the Western High Atlas of Marrakech- Kingdom of Morocco
Authors: Mobchir Wahiba , Idrissi Fadwa Chbani , Ihya Sana Ait , Nasser Malika Ait
Published: February 2024

We seek to justify the importance of the association’s internal and external organization and the territory dynamics in the new development challenges for tourism promotion. The study field is made up of two sites: the Southern Oasis Tourist Association in the rural commune of Asir-Guelmim and six associations in the rural commune of Tighdouine-Province of Tahnaoute-Al Haouz, Marrakech. The qualitative analysis of the comments collected from interviewed actors involving the members of the associations and local institutional actors aims to understand more the aspects of the internal and external management of the targeted associations. Apart from their divergent experiences and territories, this article emphasizes the importance of management carried out by the association.
Catalytic Effects of Biomass-Derived Ash on Loy Yang Brown Coal Gasification
Authors: Kongsomart Boodsakorn , Kannari Naokatsu , Takarada Takayuki
Published: February 2024

In this paper, the catalytic effects of two different biomass-derived ash catalysts, chicken dropping compost ash (CCA) and empty fruit bunch ash (EFBA) on the performance of CO2 gasification of Loy Yang brown coal (LY) char were studied. The CO2 gasification was done at temperatures between 650 to 800 oC. It was found that the reaction rate is strongly dependent on the CO2 gasification temperature and the carbon conversion increases by increasing the CO2 gasification temperature. By using LY mixed with 10 wt% of EFB ash (EFBA), the maximum char conversion of 1.0 with a high gasification rate was obtained when CO2 gasification was carried out at 800oC for 30 min. Finally, the EFBA is more efficient in catalytic activity compared to the CC ash (CCA) under the same conditions.

Keywords : Biomass, Brown coal char, CO2 gasification, Chicken dropping compost, Empty fruit bunch
Thin-Film Composite Nanofiltration Membrane: A Study on the Curing Time and Its Performance Evaluation
Authors: Mah K. H. , Yussof H. W. , Abu Seman M. N. , Mohammad A. W.
Published: February 2024

Xylose is the raw material for xylitol production which can be obtained through hydrolysis of agriculture waste. However, the presence of glucose in hydrolysate interferes in the process. Thin-film composite membrane developed through interfacial polymerization (IP) can be tailored for xylose separation through manipulation preparation conditions. In this study, the impact of curing conditions, specifically curing time was investigated on xylose separation. The thin-film composite (TFC) membrane was formed from IP between triethanolamine (TEOA) and tri-mesoyl chloride (TMC) on polyethersulfone support membrane. Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) spectroscopy and contact angle measurement were performed to investigate the formation of thin-film. Evaluation of membrane performances, namely pure water flux, permeation flux, and xylose separation factor was used to evaluate the TFC membrane cured at a different time (2, 5, 10, 15, and 20 minutes). A decrease in flux was observed when prolonged the curing time for TFC membrane. A minimum of 5 minutes curing time would be needed for the organic solvent to be evaporated from the membrane at 60 oC, but 15 minute curing time would have better xylose separation.

Keyword: Nanofiltration, Interfacial Polymerization, Thin-film Composite, Curing Time
Knowledge of Halitosis Among Dentists and Dental Hygienists.
Authors: Oppliger Nathalie , Roth Barbara , Filippi Andreas
Published: March 2024

Bad breath is a widespread condition that has been increasingly discussed among professionals and in the mass media in the last few years. In nine of ten cases, halitosis originates intraorally; hence it has become an important topic of study in the education and training of dentists and dental hygienists. However, the de facto knowledge of professionals has never been examined until today. 750 dentists and dental hygienists from Switzerland, Germany, and France were personally interviewed. Their knowledge of halitosis was assessed using a specifically designed questionnaire. In general, considerable differences were ascertained between the German-speaking countries and France, dentists and dental hygienists, and women and men. 27.5% of the French participants believed that the underlying cause of halitosis has a non-oral nature, whereas only 8% of the Swiss and German participants believed so (p<0.001). In contrast to dental hygienists, dentists more often considered gastrointestinal factors as a cause of halitosis (p<0.001). Dental hygienists from Switzerland and Germany more frequently reported the use of tongue scrapers as a therapeutic method (97% and 97.3%) than did dentists of the same countries (87.3% and 89.3%). Among the French participants, only 52% mentioned the use of tongue scrapers to treat halitosis. 2.7% of French dental professionals had participated in a continuing education course about halitosis, which is much lower than the rate of attendance in Switzerland and Germany (46%). Additionally, interdisciplinary discrepancies were observed, as 65.3% of the dental hygienists frequented advanced training courses, which was twice as much as dentists. Therefore, there are clear differences between dentists in France and their colleagues from the German-speaking countries, but also between dental hygienists and dentists. Dental hygienists from Switzerland and Germany appear to be far ahead in terms of halitosis knowledge.
Digitale Implantatabformung
Authors: Mahl Dominik , Glenz Fabienne , Marinello Carlo P.
Published: March 2024

Intraoral-Scanner finden immer öfter Anwendung im zahnärztlichen Alltag. Neben der digitalen Abformung von präparierten Zähnen lassen sich damit auch Implantate intraoral scannen. Die vorliegende Arbeit gibt eine Übersicht der verschiedenen Möglichkeiten intraoraler, digitaler Implantatabformungen. Ebenso werden Möglichkeiten und Grenzen des Vorgehens unter Berücksichtigung des aktuellen Wissensstandes beleuchtet.
Respiratory diseases are associated with molar-incisor hypomineralizations
Authors: Kühnisch Jan , Mach Daniela , Thiering Elisabeth , Brockow Inken , Hoffmann Ute , Neumann Claudia , Heinrich-Weltzien Roswitha , Bauer Carl-Peter , Berdel Dietrich , Von Berg Andrea , Koletzko Sybille , Garcia-Godoy Franklin , Hickel Reinhard , Heinrich Joachim , Plus 10 Study Group GINI
Published: March 2024

The objective of our study was to evaluate the association of molar-incisor hypomineralizations (MIHs) with prospectively collected potential causative factors from the first 4 years of life, e.g. respiratory diseases, breastfeeding, maternal smoking and parental education. A total of 692 children (10 years old) from the GINI birth cohort study participated. The dental examination included the registration of enamel hypomineralizations (EHs) according to the EAPD criteria. Children with EH were sub-categorized into those with at least one EH (MIH/1), those with a minimum of one EH on at least one first permanent molar (MIH/2) and those with EH on at least one first permanent molar and a permanent incisor (MIH/3). All relationships between causative factors and caries or MIH were evaluated using simple and multiple logistic regression analyses. EHs were observed in 37.9% (MIH/1), 14.7% (MIH/2) and 9.2% (MIH/3) of all subjects. After adjustment for confounding factors, 10-year-old children with at least one episode of respiratory disease had a significantly higher risk (2.48 times, adjusted OR) for the development of MIH/3. In case of breastfeeding, a non-significant association was observed. None of the tested factors was associated with either MIH/1 or MIH/2. Early respiratory diseases seem to be directly or indirectly related to MIH/3 only. The role of (systemic) medications used for treatment of these diseases needs to be investigated in future studies.
The most common complications after wisdom-tooth removal: part 1: a retrospective study of 1,199 cases in the mandible
Authors: Sigron Guido R. , Pourmand Pièrre P. , Mache Beatrice , Stadlinger Bernd , Locher Michael C.
Published: March 2024

The knowledge of potential complications after surgical removal of third molars and adequate risk assessment is indispensable in oral surgery. The present retrospective study analyzed the influence of different parameters, such as the patient’s age and gender, retention type, and radiological projection (using orthopantomography) of wisdom teeth on the mandibular canal on postoperative complications after the removal of 1,199 wisdom teeth. Overall, 101 (8.4%) complications occurred: 50 cases of alveolar osteitis (4.2%), 12 temporary (1%) and 6 persistent (0.5%) sensation disorders, 15 abscesses (1.25%), 7 dehiscences (0.6%), 5 cases of post-operative bleeding (0.4%), 4 sequestra (0.32%), 1 fistula (0.08%) and 1 hematoma (0.08%). The risk for developing alveolar osteitis was 6% for patients who suffered from a previous pericoronal infection and was higher for female than male patients. Smoking showed no influence on alveolar osteitis. A significant correlation (p < 0.0001) could be shown between the radiological projection of wisdom teeth on the mandibular canal and post-operative sensation disorders. The experience of the surgeon and pre-operative 3-dimensional imaging (cone-beam computed tomography, computed tomography) did not reduce this risk. No correlation was found for patient’s age and gender. In conclusion, the surgical decision to remove wisdom teeth must be made with caution in cases of complete radiological projection of the wisdom tooth on the mandibular canal.
Halitosismanagement für die Zahnarztpraxis
Authors: Seemann Rainer , Da Conceicao Mauricio Duarte , Filippi Andreas , Greenman John , Lenton Patricia , Nachnani Sushma , Quirynen Marc , Roldán Silvia , Schulze Hendrik , Sterer Nir , Tangerman Albert , Winkel Edwin G. , Yaegaki Ken , Rosenberg Mel
Published: March 2024

Klinische Untersuchungen an Halitosispatienten zeigen eindeutig, dass in der deutlichen Mehrzahl der Fälle die Quelle des unangenehmen Geruchs in der Mundhöhle zu finden ist (90%). Entspre­ chend dieser Studien waren die Hauptquellen für intraorale Halitosis Zungenbeläge, Gingivitis/ Parodontitis und die Kombination aus beidem. Daher ist es absolut naheliegend, dass der Zahn­ arzt in der Lage sein sollte, intraorale Halitosis unter üblicherweise vorliegenden Praxisbedin­ gungen erfolgreich zu behandeln. Zahnärzte, die sich für die Diagnose und Behandlung interes­sieren, stehen jedoch vor der Herausforderung, wissenschaftlich fundierte Erkenntnisse und Strategien in die Praxis übertragen zu müssen. Daher werden in der vorliegenden Arbeit die Ergebnisse eines internationalen Konsensus­ Workshops zusammengefasst. Zu diesem Work­ shop trafen sich internationale Halitosisexperten mit dem Ziel, Einigkeit über generelle Richtlinien zu erzielen, wie Patienten mit Mundgeruchs­ beschwerden unter Praxisbedingungen diagnos­tiziert und behandelt werden können.
Sterilisationsergebnisse bei mit Sporen versehenen Streifen
Authors: Morandi Pierre­-Alain , Kesseler Dagmar
Published: March 2024

Das Schweizerische Zentrum für Qualitätskon­ trolle führt externe Qualitätskontrollen für medi­ zinische Laboratorien und biologische Sterili­ sationskontrollen für Autoklaven durch. Im Zeitraum von 2008 bis 2012 haben 209 Zahn­ arztpraxen 4709 Sterilisationen von biologischen Indikatoren – mit Geobacillus stearothermophilus versehene Sporenstreifen – durchgeführt. Der Median der Sterilisationen pro Teilnehmer be­ trug 20. Mit Wasserdampf betriebene Autoklaven erzielten im Vergleich zu Chemiklaven bessere Ergebnisse. Aus der Kontrolle geht hervor, dass die Sporenstreifen in 99 Fällen (2,1%) nicht kor­rekt sterilisiert wurden und dass darüber hinaus 61 Teilnehmende (29,2%) mit einer oder mehre­ren unwirksamen Sterilisation(en) konfrontiert waren. Darüber hinaus konnten wir im genannten Zeitraum keine Verbesserung der Leistungen feststellen.
Central giant-cell granuloma: A case report
Authors: Antonini Linda , Vajtai Istvan , Bornstein Michael M.
Published: March 2024

The central giant-cell granuloma is a tumour-like change in the jawbone of unknown aetiology and morphological similarity to the giant cell tumour of the bone.
Mechanical effects of different Swiss market-leading dentifrices on dentin. Evaluation of cleaning potential, relative dentin abrasion and surface roughening
Authors: Tawakoli Pune N , Sener Beatrice , Attin Thomas
Published: March 2024

In order to estimate the potential of dentifrices to harm exposed dentin, the mechanical properties of 15 dentifrices available in the Swiss market were investigated. A total of 120 bovine dentin samples were irradiated and analyzed for relative dentin abrasion (RDA). To investigate subsequent increases in surface roughness (Ra), dentin specimens (n = 180) were analyzed profilometrically at baseline and after brushing with test slurries. The cleaning efficacy (Ce) was determined using artificially stained tooth specimens (n = 180). The available fluoride content of the dentifrices was measured in respective slurries using an ion-selective electrode. The results of the mechanical analyses were categorized into four or five groups for each parameter. Four potential user groups were defined according to individual problem specifications and user demands. The results were compared to those of an earlier investigation of dentifrices published in 1998. The RDA results exceeded the values declared by the manufacturers and correlated significantly with the results of the Ra measurements. A significant positive correlation of RDA and Ce values was also shown. The measured fluoride content was often below the fluoride, declared by the manufactures. Only a few of the tested dentifrices qualified as suitable for all potential user groups. Major differences were observed between the mechanical properties found in the present study compared to those found in 1998. These changes in the properties of dentifrices during the past decade should be considered with respect to providing adequate recommendations for individual user demands.
TABOTAMP® en chirurgie orale et maxillo-faciale – propriétés, indications et contre-indications
Authors: Yildirim Vedat , Lübbers Heinz-Theo , Yildirim Ayhan
Published: March 2024

TABOTAMP® de Johnson & Johnson Medical Ltd est admis depuis 1950 dans le domaine médical et a également trouvé sa place en chirurgie buccale et maxillo-faciale.
Überzählige Zähne im Ober- und Unterkiefer – eine interdisziplinäre Herausforderung
Authors: Mossaz Jessica , Suter Valerie G. A. , Katsaros Christos , Bornstein Michael M.
Published: March 2024

Überzählige Zähne bilden sich zusätzlich zur normalen Dentition und stellen für Kinderzahnmediziner, Kieferorthopäden und auch Oralchirurgen ein klinisches Problem dar – daher sind interdisziplinäre Lösungsansätze gefragt. In einer zweiteiligen Übersichtsarbeit sollen alle aktuellen Aspekte von der Klassifikation über mögliche Komplikationen bis hin zur Diagnostik und Therapie aufgezeigt und diskutiert werden. Überzählige Zähne können in der primären oder permanenten Dentition auftreten. Basierend auf der Lage unterscheidet man bei überzähligen Zähnen zwischen Mesiodens, einem zusätzlichen seitlichen Schneidezahn, Eckzahn, Prämolar, Paramolar und Distomolar. Bei überzähligen Zähnen werden zudem vier morphologische Typen unterschieden: konisch, tuberkulär (höckerförmig), überzählige Zähne mit identischer Zahnform und Odontom. Überzählige Zähne können lange Zeit asymptomatisch bleiben und werden daher nicht selten erst zufällig diagnostiziert. Es werden aber auch eine Vielzahl an möglichen klinischen Komplikationen wie Zahndurchbruchstörungen, Lageverschiebungen/Rotationen sowie Wurzelresorptionen an benachbarten Zähnen und auch Zystenbildung in der Literatur beschrieben. Eine Wurzelresorption an Nachbarzähnen wird in bis zu 22,8% der Fälle im entsprechenden Röntgenbild beobachtet.
Early Childhood Caries and Caries Experience in Permanent Dentition. A 15-year Cohort Study
Authors: Jordan A Rainer , Becker Natascha , Jöhren Hans-Peter , Zimmer Stefan
Published: March 2024

In Germany, caries of young people has been declining since the late 1980s, while the prevalence of early childhood caries has remained steady. Data from a number of regional studies suggest a current prevalence between 10% and 15%. However, there is a dearth of longitudinal observational study data on the risk of caries in the permanent teeth of persons who as children had to undergo comprehensive treatment for caries under intubation general anesthesia. The aim of this study was to compare caries experience in the permanent teeth of patients who had to undergo surgical treatment under general anesthesia as a result of non-compliance with caries treatment in early childhood with the experience of patients who did not develop caries at a young age. Analysis of the data revealed that severe caries experience during early childhood resulted in a more severe caries experience during adulthood (difference: 14.8 DMFS; p = 0.001). This increase in caries experience applied to both untreated and treated carious surfaces, and was also apparent in relation to tooth extractions. When compared with persons whose first teeth had been caries-free, patients with severe childhood caries experience tended to show poorer dental hygiene in relation to smooth (p < 0.06) and interproximal (p < 0.04) surfaces. Patients who had been non-compliant as young children were not found to suffer from dental anxiety as young adults. Patients in the treatment and control groups differed with regard to dental health. Aside from being statistically relevant, these differences also have implications for clinical dental practice.
La coronectomie
Authors: Wolf Daniel , Renton Tara
Published: March 2024

L’avulsion des dents de sagesse est l’intervention chirurgicale la plus fréquente réalisée au cabinet dentaire. Lorsque l’OPT met en évidence une relation anatomique très proche entre les racines et le canal mandibulaire, il faut s’attendre à une augmentation de l’incidence des lésions du nerf alvéolaire inférieur lors de l’extraction. Ces lésions nerveuses et les troubles sensoriels associés sont le plus souvent transitoires, mais dans de rares cas, ils peuvent être permanents. Cela peut avoir de graves conséquences sur le bien-être des personnes concernées. Le patient peut avoir des difficultés à se raser ou à parler (troubles de l’élocution), et en plus de ces problèmes concernant les activités de la vie quotidienne, des problèmes psychologiques peuvent également survenir, avec parfois même des douleurs neuropathiques dans la zone d’innervation. La coronectomie des dents de sagesse de la mâchoire inférieure a été décrite il y a plus de 25 ans. Il s’agit d’une technique chirurgicale permettant de minimiser les risques de lésions nerveuses lors d’une relation de proximité étroite entre les racines des dents de sagesse (ou d’autres molaires) mandibulaires et le nerf alvéolaire inférieur – c’est-à- dire lorsque l’avulsion complète de la dent entraînerait vraisemblablement une lésion de ce nerf. Cette technique a été largement documentée dans des études contrôlées et randomisées. Dans ce travail, la coronectomie est présentée sur la base d’une étude de cas et la littérature récente consacrée à cette problématique est discutée.
Medikamentöse Therapie des oralen Lichen ruber planus
Authors: Schenkel Jan S. , Lübbers Heinz-Theo , Rostetter Claudio , Metzler Philipp
Published: March 2024

Mit einer Prävalenz um 2% präsentiert sich der orale Lichen mit grosser Wahrscheinlichkeit in der Praxis. Diese Publikation soll Hilfe beim medi- kamentösen Management bieten. Der orale Lichen ruber planus (OLP) ist mit einer Prävalenz um 2% eine häufige Mundschleimhauterkrankung. Die Krankheit kann isoliert im Munde auftreten, aber auch andere Schleimhäute und die Haut betreffen.
Risk indicators of early childhood caries (ECC) in children with high treatment needs
Authors: Kraljevic Iris , Filippi Cornelia , Filippi Andreas
Published: March 2024

Early childhood caries (ECC) represents a major health and economic problem worldwide. Its consequences such as early pain experience may affect the immediate and long-term quality of life of the child. In very young and uncooperative children the therapy of ECC is often viable only under general anesthesia. After treatment these affected children have a higher risk for future caries either soon thereafter, or later in life. The aim of the present study was to determine risk indicators and their correlation among children with high caries prevalence and high treatment needs, in order to facilitate the development of targeted prophylaxis programs that would reduce future occurrences of ECC or at least positively influence the outcome. For this purpose, between 2010 and 2014 the parents of these children (n=82) were interviewed in the University Childrens Hospital in Basel (UKBB) prior to the children's treatment under general anesthesia. The standardized questionnaire included questions regarding the age of the child, the mother's country of origin, the oral hygiene, and the drinking habits of the child. The analysis shows that the high mean dmft/ dmfs values (dmft: 9.49 and dmfs: 26.35) correlated significantly with the geographic origin of the mother (p<0.05), the beginning of tooth brushing (p<0.05), lack of supervised tooth brushing (p<0.01), and nighttime consumption of sugar-sweetened beverages (p<0.05). In contrast, the duration of breastfeeding and prolonged use of a baby bottle (about 2.5 years) did not have a clear impact on high caries prevalence.
Amoxicillin mit Clavulansäure – Standardantibiotikum im allgemeinzahnärztlichen Alltag
Authors: Rostetter Claudio , Schenkel Jan , Rücker Martin , Lübbers Heinz-Theo
Published: March 2024

Unter Berücksichtigung der aktuellsten Forschungsergebnisse und Guidelines gibt dieser Artikel eine Übersicht zur korrekten Verordnung von Amoxicillin mit Clavulansäure im allgemeinzahnärztlichen Alltag. Obwohl Clindamycin nicht Mittel der Wahl ist, wird dieses Antibiotikum in über 50% der Fälle in der Zahnarztpraxis als erste Wahl verordnet (Schussl et al. 2014). Aktuelle prospektive Studien zeigen eine niedrige Resistenzquote für Amoxicillin mit Clavulansäure (z.B. Augmentin®), im Gegensatz zu einer zehnfach höheren Rate bei Clindamycin. Letzteres stellt daher lediglich ein alternatives Antibiotikum bei Penicillinallergie dar. Bis zu 10% der Patienten geben an, allergisch auf Penicillin zu reagieren, nach allergologischer Diagnostik verbleiben jedoch nur noch 15–25% dieser Patienten mit einer tatsächlichen Allergie (Hallig 2014). Angesichts dieser Zahlen überrascht die hohe Anzahl an Verordnungen von Clindamycin in der zahnärztlichen Praxis und kann nicht rational begründet werden. Mittel der ersten Wahlbeiakuten Infektionen ist 1g Amoxicillin mit Clavulansäure alle zwölf Stunden (Bax 2007). Amoxicillin mit Clavulansäure hat im Vergleich zu Clindamycin eine bessere Knochen- und Pulpa-Penetration (Schussl et al. 2014), führt seltener zu Diarrhö und muss nur zweimal täglich eingenommen werden.
Anti-erosive effect of a self-assembling peptide gel
Authors: Attin Thomas , Becker Klaus , Wiedemeier Daniel B , Schmidlin Patrick R , Wegehaupt Florian J
Published: March 2024

This study analyzed the anti-erosive effect of a self-assembling peptide fibre gel. One hundred and twelve bovine enamel samples were ground flat and subjected to a three times de- and re-mineralization cycle: erosion (5 min, HCl, pH 2.6) alternated with storage in artificial saliva under agitation. Then, samples were covered with different anti-erosive compounds (2 min): Duraphat toothpaste (DT), Elmex Erosion Protection Toothpaste (EET) or Elmex Gelée (EG) – all mixed with saliva (1:3) –, Elmex Erosion Protection Mouthwash (EEM), Curodont Protect (CP; self-assembling peptide gel) or MI Paste Plus (MIP). Untreated, water stored samples served as control. In experiment 1, half of the samples of each group were continuously superfused with HCl (pH 2.6, 60 μl/min, 8 min). In experiment 2, the second half of samples were subjected to eight cycles, each consisting of application of the respective anti-erosive compound followed by an erosion (60 s, HCl, pH 2.6), followed by remineralization in artificial saliva (45 min). Enamel loss was profilometrically determined. In experiment 1, EEM and EET performed significantly better compared to all other compounds. Substance loss of all other compounds did not differ significantly from control. In experiment 2, significantly better performance was achieved by EEM and EET. EG showed significantly lower protection than the control. All other applied compounds yielded no significant difference compared to control. Under the chosen conditions, the self-assembling peptide-containing compound showed no anti-erosive effect.
Änderungen beim zahnärztlichen Röntgen per 1.1.2018
Authors: Dagassan-Berndt Dorothea , Lübbers Heinz-Theo
Published: March 2024

Auf den 1. Januar 2018 ist in der Schweiz eine neue Rechtsordnung für den Bereich des Strahlenschutzes in Kraft getreten. Vieles wird klarer, einiges einfacher, manches auch auf­ wendiger. Das Bundesamt für Gesundheit (BAG) hat mit dem Schreiben vom 18. Oktober 2017 die Schweizer Zahnärztinnen und Zahn­ärzte informiert. Als Fachgesellschaft für dentomaxillofaziale Radiologie möchten wir ergänzend Stellung nehmen und praxistauglich aufzeigen, welche Regeln ab 2018 für das zahnärztliche Röntgen (medizinische Exposition im Niedrigdosis­bereich) zu beachten sind.
Prise en charge des patients sous agents antiplaquettaires au cabinet dentaire
Authors: Yildirim Ayhan , Lübbers Heinz-Theo , Yildirim Ali
Published: March 2024

Les thrombocytes circulent dans le sang et interagissent avec d’autres facteurs pour provoquer la coagulation du sang après une blessure. Ce processus bloque la plaie en empêchant le sang de s’écouler et limite la perte de sang. Les inhibiteurs de l’agrégation thrombocytaire empêchent l’agglutination des plaquettes sanguines. Cette agrégation est considérée comme indésirable en présence de certaines conditions préexistantes, lorsqu’il faut empêcher, par exemple, la croissance de caillots sanguins. De plus en plus de patients âgés se présentent chez leur médecin- dentiste, après une hospitalisation, sous traitement par inhibiteur de l’agrégation plaquettaire nouvellement prescrit. L’utilisation de ces médicaments devrait donc être connue.
Das Zygoma-Implantat in unserer täglichen Praxis
Authors: Pineau Mallouel , Nicot Romain , Lauwers Ludovic , Ferri Joël , Raoul Gwénaël
Published: March 2024

Der Einfluss von Prothesen und Implantaten auf die Lebensqualität, verbunden mit der Zahn- gesundheit des Patienten, kann dem Zahnarzt bei der Erbringung der bestmöglichen Dienstleistungen Orientierungshilfen geben. Das Zygoma- Implantat (ZI) ist eine partielle oder vollständige Alternative zu den sogenannten herkömmlichen Techniken (die auf eine Augmentation des Knochenvolumens abzielen) bei zahnloser atrophier- ter Maxilla. Ziel dieser Studie war es, zu unter- suchen, welchen Einfluss eine Versorgung mit festen ZI auf die Lebensqualität der Patienten hat. Diese Studie zeigte den Zufriedenheitsgrad einer Fallserie von neun Patienten, die mit einem ZI behandelt wurden, anhand ihrer Scores im Fragebogen Oral Health Impact Profile OHIP-14 bei prätherapeutischer und posttherapeutischer Befragung. Der Einfluss des ZI auf die Lebensqualität wird im Vergleich zur Referenzliteratur diskutiert. Der durchschnittliche prätherapeutische OHIP- Score lag bei 29,1. Der durchschnittliche post- therapeutische OHIP-Score lag bei 5,8. Die gefühlte Lebensqualität der Patienten war sehr zufriedenstellend. In Übereinstimmung mit der Literatur war eine prothetische Versorgung mit einem ZI sowohl unter funktionalen als auch unter ästhetischen Aspekten befriedigend. Diese Option aus dem Therapieangebot für atrophierte zahnlose Maxilla wird in unserer alltäglichen Praxis immer interessanter.
Versorgung frakturierter Oberkiefer-Frontzähne beim jungen Patienten mit Cerec-Komposit-Teilveneers
Authors: Di Rocco Domenico
Published: March 2024

Die Behandlung von Kindern mit einer Aufmerksamkeitsdefizit-Hyperaktivitätsstörung ADS/ ADHS ist oft nicht einfach. Müssen Frontzähne nach einem Trauma versorgt werden oder stehen grössere Arbeiten an, stossen Patient und Be- handler schnell an ihre Grenzen. Im vorliegenden Fall wurde mithilfe des Cerec- und Komposit-Teilveneers versucht, die Behandlung in zwei, für den Patienten relativ kurze, Behandlungsphasen zu gliedern. Unterbrochen wurden die zwei Behandlungseinheiten durch eine längere Konstruktions- und Schleifphase. Die Komposit-Teilveneers wiesen eine akzeptable Ästhetik auf. Der Patient und die Eltern empfanden die drei- phasige Cerec-Behandlung als sehr angenehm und stressfreier als sonstige Behandlungen und waren mit den Restaurationen hochzufrieden. Eine Langzeitprognose kann zum jetzigen Zeitpunkt nicht gemacht werden, dazu fehlen die klinischen Studien.
L’érythème exsudatif multiforme (ou érythème polymorphe)
Authors: Schriber Martina , Suter Valerie G. A.
Published: March 2024

L’érythème exsudatif multiforme (EEM) ou érythème polymorphe (EP) est une inflammation de la peau et/ou des muqueuses (forme mineure ou majeure), d’apparition soudaine. Typiquement, elle atteint de jeunes adultes de sexe masculin et en bonne santé. Tout d’abord, et parfois exclusivement, les lèvres sont affectées. Les muqueuses de la joue, de la gencive et de la langue peuvent également être atteintes. Plus rarement, les lésions intraorales se situent également sur le palais dur et mou et le plancher buccal. Les patients rapportent des douleurs intenses en mangeant, à la déglutition et en parlant. En général, le tableau clinique est suffisamment caractéristique pour poser le diagnostic et l’examen histopathologique n’est pas nécessaire.
Myoarthropathische Beschwerden als Manifestation einer frühen Neuroborreliose
Authors: Burkhard John Patrik Matthias , Lädrach Kurt , Iizuka Tateyuki , Gerber Stefan
Published: March 2024

Die Lyme-Borreliose ist eine weit verbreitete, klinisch sich pleomorph manifestierende Erkrankung mit wenigen Verweisen in die zahnärztliche Literatur. Borreliose-assoziierte orofaziale Schmerzen stellen bei der Vielfältigkeit an Differenzialdiagnosen eine besondere Herausforderung an den Behandler und an den Patienten dar. Der vorliegende Fallbericht zeigt die Wichtigkeit einer fundierten und strukturierten Anamnese und Diagnostik bei ‒ in der täglichen Praxis häufig anzutreffender ‒ orofazialer Schmerzsymptomatik, um schwere Krankheitsverläufe früh zu erkennen und im Bedarfsfall interdisziplinär zu therapieren.
Extraoral anatomy in CBCT – a literature review. Part 3: Retromaxillary region
Authors: Von Arx Thomas , Lozanoff Scott , Bornstein Michael M.
Published: March 2024

In this review about extraoral anatomy as depicted by cone beam computed tomography, the retromaxillary region is discussed. A medium-sized (6 x 6 cm) or large (≥ 8 x 8 cm) field of view of the maxilla will inevitably depict the retromaxillary region that can be considered a «transition» zone between the viscerocranium and the neurocranium. Major structures of the region include the sphenoid bone and the pterygopalatine fossae. The sphenoid bone is a single but complex bone located between the maxilla and the brain. It is composed of a central body, bilateral greater and lesser wings, and pterygoid processes. Important neurovascular structures pass through the sphenoid bone: the optic nerve and the ophthalmic artery via the optic canal, the maxillary nerve via the foramen rotundum, and the pterygoid nerve via the Vidian canal. The central body of the sphenoid bone also contains the highly variable sphenoid sinus that is the most posteriorly located paranasal sinus. The bilateral pterygopalatine fossae behind the maxillary sinuses contain several important neurovascular structures that supply the maxilla and the midface.
Extraoral anatomy in CBCT – a literature review. Part 4: Pharyngocervical region
Authors: Von Arx Thomas , Lozanoff Scott , M. Bornstein Michael
Published: March 2024

This review about extraoral anatomy depicted in cone beam computed tomography describes the pharyngocervical region.
Vergleich der Reinigungseffizienz zwischen Interdentalbürsten und Sticks
Authors: Votta Ivana , Hofer Deborah , Gartenmann Stefanie , Schmidlin Patrick R.
Published: March 2024

Studien bezüglich Interdentalraumreinigung haben einen Vorteil von Interdentalbürsten (IDB) gegen­ über anderen Zahnzwischenraumpflegemitteln gezeigt. Als Alternative werden häufig Sticks (STK) aus Gummi empfohlen, da sie als benutzerfreund­lich, schonend, aber trotzdem effektiv gelten. Diese Studie hatte zum Ziel, die Reinigungseffizienz mit der gleichen Anwendungskraft zwischen IDB und STK zu vergleichen und in den klinischen Kontext zu stellen. Es wurden Bürsten mit verschiedenen Geometrien und Durchmessern getestet. Dabei wurden jeweils zwei konische STK zweier Hersteller der Grössen «XS/S» (0,7–2,6 mm) und «L» (0,9–3,4 mm) un­tersucht. Bei den IDB wurden eine konische, zwei zylindrische und eine taillierte Bürste zwischen 1,9 und 4,0 mm untersucht. Ein geometrisches Modell mit parallelwandigen Metallblöcken wurde verwen­det. Die Bürsten wurden mit jeweils einem und fünf Reinigungszyklen getestet. Die Reinigungseffizienz wurde planimetrisch ermittelt. Die maximale Reini­gungseffizienz bei den IDB betrug bei 1 mm Abstand nach einem und fünf Putzzyklen 45% respektive 95%. Bei den Sticks lag die Reinigungsleistung ent­ sprechend bei 30% respektive 67%. Im Abstand von 2 mm lag die maximale Reinigungsleistung bei einem respektive fünf Putzzyklen 50% und 87% bei den IDB, aber jeweils nur 10% bei den STK. Un­ ter Berücksichtigung der Limitationen dieser Studie zeigten die IDB insgesamt eine bessere Reinigungs­effizienz mit der gleichen Anwendungskraft im Ver­gleich zu STK. Als Schlussfolgerung kann festgehal­ten werden, dass STK gegebenenfalls bei schmalen Interdentalräumen eingesetzt werden können.
Ausgeprägter Tonsillenstein in einer Krypte der linken Tonsilla palatina
Authors: Bornstein Michael M. , Wai Kan Yeung Andy , Sleiter Roberto
Published: March 2024

Tonsillolithen (Tonsillen- oder Mandelsteine) sind ektopische Kalzifikationen, die in den Krypten der Tonsilla palatina (Gaumenmandel), der Tonsilla lingualis (Zungenmadel) und auch der Tonsilla pharyngealis (Rachenmandel) entstehen können. Die genaue Ätiologie und Pathogenese, die zur Bildung dieser Mandelsteine führt, ist bis heute nicht bekannt.
Der braune Tumor bei unbehandeltem Hyperparathyreoidismus
Authors: Gerber Fabienne A. , Rupp Niels J. , Döbelin Quirin , Stadlinger Bernd , Valdec Silvio
Published: March 2024

Der braune Tumor (Osteitis fibrosa cystica) ist eine seltene, nicht neoplastische, expansiv wachsende, riesenzellhaltige Läsion. Ein Hyperparathyreoidismus (Nebenschilddrüsenüberfunktion [HPT]) führt in 2 bis 3 Prozent der Fälle zur Entwicklung eines braunen Tumors. Dieser kann sich in jedem Teil des Skeletts manifestieren.