bluuebunny/crossref_metadata_2025_split huggingface dataset:
r-АЛГОРИТМ ДЛЯ НАВЧАННЯ МОДЕЛЕЙ ЛІНІЙНОЇ РЕГРЕСІЇ
Authors: Stetsyuk P.I. , Vakulenko D.V. , Stetsyuk M.Н. 
Published: April 2024

Для знаходження параметрів лінійної регресії за критерієм найменших модулів в степені () з регуляризацією параметрів за критерієм найменших модулів в степені () розроблено Octave-програму ralmpr (r-algorithm for least moduli to the power of p with regularization). Програма дозволяє налаштовувати степені та на пошук параметрів лінійної регресії за правилами ridge-регресії () та lasso-регресії (, ). За її допомогою можна знаходити параметри лінійної регресії, які забезпечуються використанням інших значень степенів . Якщо регуляризація параметрів не враховується, то програма ralmpr дозволяє знаходити найкращі параметри лінійної регресії за методом найменших модулів та за методом найменших квадратів.
Матеріал статті подано в трьох розділах. У розділі 1 наведено опис -алгоритму з адаптивним способом регулювання кроку та Octave-програми ralgb5a, яка його реалізує. У розділі 2 описано оптимізаційну задачу безумовної мінімізації опуклої функції для знаходження параметрів узагальненої лінійної регресії та наведено код програми ralmpr для її розв’язання. У розділі 3 наведено результати обчислювальних експериментів, які демонструють ефективність програми для тисячі невідомих параметрів.
Hemisection and porcelain fused to metal crown splinters on the first molar: A case report
Authors: Styaningrum Yunita , Kuncoro Rebbecca A. , Untara Raphael TE. , Kristanti Yulita 
Published: April 2024

Objective: The aim of this treatment was to preserve the remaining tooth structure and to restore the function of the tooth
Methods: A 37-year-old female patient with a chief complaint of pain in the lower right molar tooth after root canal treated one week ago. Clinical examination revealed a cavity on the disto-occlusal side achieve half the crown of the tooth with a dentin depth. Percussion: (+), palpation: (-), mobility: (-), vitality: (-). Radiograph examination revealed radiolucent area mesial root and ± 1.5mm radiopaque images that are thought to be file fractures in the apical foramen. Vertical radiolucent lines on dental bifurcation were detected vertical bone loss was evident on mesial root of the lower right molar with furcation involvement. Management of the patient is hemi section and Porcelain fused to metal crown splinter.
Results: After one month of hemi section, no pain detected, the gingiva shows good healing, no Intra and extraoral swelling, trismus was absent, and objective examination percussion test was (-) and mobility (-).
Conclusion: Hemi section is a conservative and effective treatment of choice overcome vertical radiolucent lines on dental bifurcation and broken file in the apical foramen.
Relationship of psychological stress with oral health status in commercial sex workers in Makassar City
Authors: Djamaluddin Nursyamsi , Ayub I. Anwar  , Burhanuddin D. Pasiga  , Fuad H. Akbar  , Rasmidar Samad  , Andi M. Farhan  , Anggraini Indang  
Published: April 2024

Background : Depression can have a negative influence on dental health and increase the chance of engaging in high-risk sexual behavior. This study aims to determine the relationship between psychological stress with oral health status in commercial sex workers in Makassar

Methods : This study is an analytic observational study using a cross-sectional design, was conducted in January 2022. The population in this study was 36 commercial sex workers in Makassar City, using total sampling technique. Exclusion criteria consisted of commercial sex workers who experienced cognitive impairment and commercial sex workers who did not complete the questionnaire. Psychological distress status was assessed using the General Health Questions (GHQ), and Depression syndrome using DSM-IV criteria. Oral health status was assessed using OHI-S and DMF-T.

Results : Based on the OHI-S score, the sample had an average value of 5.45 ± 6.70, the DMF-T index, the sample had an average value of 7.76 ± 5.18, the mental health score for psychological pressure had an average of 20.72 ± 8.46 and depressive symptoms had an average of 10.52 ± 6.86.

Discussion : This study found a significant relationship between psychological stress with oral health status in commercial sex workers in Makassar. Sex workers often feel they do not need oral health services and most of the pressure is always on sexually transmitted infections (STIs)

Conclussion : There is a significant relationship between psychological distress and depressive symptoms, with oral health status in commercial sex workers in Makassar City.
Incorrect management of a broken abutment screw
Authors: Boffano Paolo , Ruga Emanuele , Anna M. Agnone  , Vincenzo Rocchetti  
Published: April 2024

Implant abutment screw fracture is an uncommon though challenging complication. A fractured abutment screw should be removed without damaging the threads of the screw channel to reuse the prosthesis.

To retrieve the fractured part without severing the threads, various procedures have been proposed, such as to try to unscrew the fractured part using a strong, straight and pointed probe, or to prepare a small dent into the center of the fractured part using a small round diamond burr or a fissure burr in a counter clockwise motion. Various screw removal kits have been introduced to this aim, but with inconsistent results.

When a physician does not manage to remove the fractured screw in either way, he/she often chooses to either replace the implant, which can be an expensive option, or abandon the implant and cover it with soft tissue, which may lead to compromised function, phonetics, or esthetics. Instead, saving the implant would great benefit patients. To this aim, the conversion of the screw chamber into a dowel space for a dowel-core and crown restoration has been proposed, thanks to the aid of laser-welded titanium for example. Instead, other techniques do not seem to have been commonly accepted.

The aim of the present article is to present the incorrect management of a fractured abutment screw by a classic surtex post.
Fibrin-assisted soft tissue promotion (FASTP) as a simple root coverage technique: A case report
Authors: I-Komang E. Wijaksana  , Shafira K. Supandi  
Published: April 2024

Objective: The objective of this article is to present fibrin-assisted soft tissue promotion (FASTP), a simple root coverage surgical procedure associated with the use of A-PRF as a source of autogenous growth factors that allow the recipient soft tissue to promote the fabrication of new keratinized and attached tissue without a donor site.
Methods: The case of a 20-year-old non-smoker female patient was reported to the Universitas Airlangga Dental Hospital with a chief complaint of tooth hypersensitivity to cold stimuli at the posterior right maxilla and mandibular. A 1–1,5 mm gingival recession was found on the buccal aspect of 14, 15, 44, and 46. A final diagnosis of clinically healthy gingiva on reduced periodontium in a non-periodontitis patient was made. The treatment plan included dental health education with a focus on brushing methods and scaling procedures that were performed as non-surgical therapy. A FASTP procedure was planned for root coverage treatment on the buccal aspect of 14, 15, 44, and 46.
Results: A 1-year evaluation was done and showed complete root coverage with an acceptable gingival phenotype.
Conclusion: FASTP is a simple root coverage surgical technique without the need to harvest tissue from a donor site, thereby decreasing procedure-related morbidity. Case selection plays an important role in proper surgical technique consideration.
Infection control and willingness to treat patients with infectious disease; Study of dental students in Aceh, Indonesia
Authors: Yuli F. Ossa  , Yuniardini S. Wimardhani  , Indriasti I. Wardhany  
Published: April 2024

Objective: This study aims to assess dental students’ preparedness for infection control, and willingness to treat patients with or potentially transmit diseases.
Material and Methods: The cross-sectional study was conducted on 121 dental students from the Faculty of Dentistry Universitas Syiah Kuala in 2019. The questionnaire used in previous study in 2017 and consisted of demographic data, preparedness for infection control, and willingness to treat patients with infectious diseases.
Results: There were 121 dental students, the majority are female with one year experience of clinical experience. For infection control preparedness, majority of respondents already do personal protective equipment (64.5%), sterilize instrument before use (74.4%), but for the willingness respondents prefer not to treat patient with transmitted diseases such ad patients with tuberculosis (19.8%), people living with HIV/AIDS (19.8%), Hepatitis C (11.6) and also patient who potentially transmit infection such as sex workers (19.0%) , injecting drug users (19.8%) and LGBT (14%). prefer not to treat patients who potentially transmit infection. Result of the Spearman correlation test, showing infection control has no such correlation with willingness (r <0.15) .
Conclusion: The practice of applying universal precautions has been carried out by respondents, but the levels of students’ willingness to treat patient with infectious disease still very low. It’s necessary to carry out continuing education regarding safety training, so that it can enable dental student to work safely and no longer discriminate against patients.
Areca nut cultivators from Tamil Nadu: Is the nut their friend or foe – A questionnaire study
Authors: Vasanthi Vinoth  , Kavitha Sanjeev  , Ramesh Kumar A.  , Rajkumar Krishnan  , Bose Divya  , K Gnanambigai  
Published: April 2024

Objective: The present study was done to evaluate the awareness of people involved in cultivation of areca nut from Tamil Nadu on various oral and systemic health effects of chewing areca nut.
Material and Methods: A cross-sectional study was conducted among areca nut cultivators from various districts of Tamil Nadu. People involved in the cultivation of areca nut were included in the study. 500 individuals participated in the study. They were instructed to complete a pre-tested questionnaire with 25 questions.
Results: 58% of the participants were males and 42% were females. Dryness of the mouth from decreased production of saliva due to areca chewing was known to 57% of the study participants. 39% of the participants were aware of addiction. Oral cancer from areca nut chewing in various forms with/without tobacco was also known to 51% of them. 86% of them were prepared to quit the habit and 92% of them admitted that government has banned the sale of commercial pan masala products.
Conclusion: The study evaluated the awareness of oral and systemic effects of chewing areca nut among people involved in cultivation of areca nut from rural parts of Tamil Nadu. Appropriate regulatory measures are critical for educating people from a variety of occupational and socioeconomic backgrounds in both rural and urban areas.
Detecting children's dental caries risk through finger-digit ratio
Authors: Syakriani Syahrir  , Andi S. Permatasari  , Aini I. Baiduri  , Syamsiah Syam  , Yayah Inayah  
Published: April 2024

Objective: This research aimed to determine whether fingerprints could be used to predict the risk of tooth decay.
Material and Methods: A total of 157 children aged 6 to 12, were included in the study. Their 2D:4D digit ratio was measured using digital calipers. Additionally, intraoral examinations were conducted to assess their caries status using the DMF-T index.
Results: a significant correlation between the digit ratio and the probability of dental caries in children aged 6-12 years at SD Inpres Panaikang. The statistical output shows a positive association between lower digit ratio values and an elevated risk of dental caries. The significance value of the analysis is 0.044, which is below the standard threshold of 0.05.
Conclusion: There is a relationship between the digit ratio (2D: 4D) and the risk of dental caries. Hence, the digit ratio (2D: 4D) can be used to predict the occurrence of caries.
Antimicrobial activity of chitosan nanoparticles loaded with 0.7% tetracycline against porphyromonas gingivalis
Authors: Amalia Martina , Irma Ervina  , Silvia  , Erdi E. Nasution  
Published: April 2024

Objectives: Nanoparticle technology has also come to the fore as a viable drug delivery strategy, providing opportunities for controlled release, protecting the active ingredient from enzymatic or environmental degradation, and local retention. Porphyromonas gingivalis is a Gram-negative obligate anaerobe rod involved in the etiology of periodontal disease. Tetracycline has been widely used as an adjuvant in periodontal therapy due to its antibacterial efficacy of these drugs.
Material and Methods: Samples of this study were the pure culture of P. gingivalis (ATCC 33 277) in Mueller Hinton Agar (MHA). The ionic gelation method made a Chitosan nanoparticle loaded with 0.7% tetracycline. Chitosan nanoparticles loaded with 0.7% tetracycline were directly transferred to the microbiology laboratory to maintain the stability of the material. Mueller Hinton Agar media inoculated with bacteria had holes to input chitosan nanoparticles loaded with 0.7% tetracycline. After repeating these operations four times, the incubator was incubated at 37 ° C for 48 hours. Calipers were used to observe and measure the diameter of the bright zone (clear zone) formed around the hole.
Results: The result shows the potent antimicrobial effectiveness of chitosan nanoparticles loaded with 0,7% tetracycline with an inhibitory zone of 32.8 mm in vitro.
Conclusion: This research has shown a potent antimicrobial activity of chitosan nanoparticles loaded with 0,7% tetracycline against P. gingivalis in vitro.
Awake surgery in neurooncology. Part 2. Functional intraoperative mapping
Authors: Dmitriev A. Yu. , Sinkin M. V. , Skalnaya A. A. , Solodov A. A. , Dashyan V. G. 
Published: April 2024

Awake surgery is usually used to save patient’s speech. Various tests are applied for this purpose, whish selection depends on tumor location. In multilingual patients verbal centers usually have different position. Location of each of them is necessary to keep patient’s communication capabilities after operation.To study vision, tests with presentations of color points or pictures on the screen divided on 4 parts are used. Such testing allows to estimate vision and speech simultaneously.Mapping of motor area in awake patients allows to evaluate this function more comprehensively including motion planning, proprioceptive control and balance. Stimulation of sensory area in awake patients gives opportunity to differ various types of sensitivity.Mapping and keeping of cognitive functions, memory, attention and ability of calculation increases chance to save professional skills and quality of life after operation.
Ophthalmic segment internal carotid artery aneurysms endovascular treatment
Authors: Bobinov V. V. , Goroshchenko S.  A. , Kolomin E. G. , Rozhchenko L.  V. , Samochernykh K.  A. , Petrov A.  E. 
Published: April 2024

Aim. To estimate the nearest and distant angiographic results of endovascular occlusion of aneurysms of the internal carotid artery ophthalmic segment using non‑reconstructive treatment methods.Materials and methods. The results of endovascular treatment of 75 patients with aneurysms of the ophthalmic segment of the internal carotid artery admitted to the Neurosurgical Department No. 3 of the V. L. Polenov Russian Research Neurosurgical Institute, from January 1, 2013 to December 31, 2016 were analyzed.Results. Of 75 aneurysms, 52 (69.3 %) were radically occluded from the blood flow (Type A) and 23 (30.7 %) were sub‑totally (Type B). When isolated occlusion with detachable coils was used, radical result was achieved in 13 (59.1 %) out of 22 cases, subtotal occlusion – in 9 (40.9 %). During balloon‑assisted occlusion 39 (73.6 %) out of 53 aneurysms were shut off from the blood flow totally, 14 (26.4 %) – sub‑totally. Partial aneurysm occlusion (Type C) was not achieved in any of the observations. Recurrence was observed in 3 (30 %) out of 10 cases on control angiography after isolated occlusion with detached spirals, and 2 (20 %) required repeated surgical intervention. From 38 aneurysms operated on using balloon‑assistence, 9 (23,7 %) recurred on control angiography, 6 of them (15,8 %) required repeated surgical intervention.Conclusion. Nonconstructive surgical interventions for occlusion of aneurysms of the internal carotid artery ophthalmic segment are still urgent and effective method of treatment of patients in acute period of aneurysm rupture combined with somatic status; however, they are inferior to reconstructive surgeries concerning radica lity in the long‑term period.
Venous thromboembolism in patients with isolated moderate to severe traumatic brain injury
Authors: Khripun A. I. , Pryamikov A. D. , Asratyan S. A. , Belkov M. A. , Mironkov A. B. , Suryakhin V.  S. , Esipov P.  S. , Krasnikov A.  L. , Churkin A. A. 
Published: April 2024

Background. Traumatic brain injury (TBI) remains a big problem of modern neurosurgery, accompanied by high rates of disability and lethality. Venous thromboembolism (VTE) including venous thrombosis and pulmonary embolism (PE) plays a significant role in the structure of mortality in this pathology. Regimens and schemes of pharmacological prevention of VTE in TBI as well as corresponding preventative measures are not yet determined completely.Aim. To identify the frequency of VTE in patients with isolated moderate and severe TBI, and to evaluate the results of prevention and treatment of these complications in patients of this category.Materials and methods. Over a 3‑year period (from 2020 to 2023) 73 patients with isolated moderate and severe TBI (51 men and 22 women, mean age 61.0 ± 13.0 years) were treated in the V. M. Buyanov City Clinical Hospital. Of these, 31 patients received only conservative therapy, and 42 patients underwent surgery (craniotomy with hematoma removal, closed external hematoma drainage, and installation of intracranial pressure sensor). Ultrasound examination of the lower limb veins was performed at patient admission, then every 7 days until discharge from the hospital. Pharmacological prevention of VTE using low molecular weight heparin in non‑surgical patients was started after 1–2 days if computed tomography of the brain 24 h after admission showed no negative hematoma dynamics. Surgical patients were prescribed preventive medications 24 h after surgery if computed tomography confirmed intracranial hemostasis.Results. Venous thrombosis was detected in 22 (30.1 %) of 73 patients. PE complicated the underlying disease in 1 (1.4 %) case and was non‑fatal. There was no fatal PE in the study group. An increase of the initial intracranial hematoma volume occurred in 3 (4.1 %) patients, in 2 (2.8 %) patients the recurrence of hemorrhage occurred before the beginning of heparin administration, and in 1 (1.4 %) case against the background of therapeutic doses of anticoagulants prescribed for venous thrombosis. In the majority of cases (82.0 %; 18 of 22 patients) thromboses were localized in deep veins of the lower leg and were asymptomatic. Intrahospital mortality was 23.3 % (17 patients), all lethal outcomes were due to the course of traumatic brain disease.Conclusion. VTE is a frequent complication of TBI with intracranial hemorrhage. Regular ultrasound diagnostics makes it possible to diagnose asymptomatic distal venous thrombosis in a timely manner and to prescribe therapeutic doses of low molecular weight heparin in time which in turn allows to avoid fatal PE. Currently, there are no clear domestic recommendations for the prevention and, most importantly, for the treatment of these complications in patients with isolated moderate and severe TBI, which requires further active study of this problem.
The effect of surgeon’s pose and duration of operation on movement accuracy and level of microsurgical hand tremor
Authors: Bykanov A. E. , Pitskhelauri D. I. , Kirushin M. A. , Rastvorova O.  A. , Zagidullin T. R. 
Published: April 2024

Background. Physiological hand tremor is one of significant problems in microsurgical technique. One careless movement can cause damage to the neighboring structures and consequently worsen a patient’s condition. Therefore, the problem of reducing hand tremor remains relevant.Aim. To determine the effect of microsurgeon’s pose, duration of operation on the accuracy of surgical action and level of microsurgical hand tremor.Materials and methods. The study included 14 neurosurgery residents satisfying inclusion criteria. For evaluation and simulation of microsurgical action, validated and developed by the study authors devices for testing and surgical microscope Carl Zeiss were used. The experimental results were compared using univariate analysis. The differences were considered statistically significant at p <0.05.Results. Surgeon’s pose standing / sitting did not affect spatial accuracy of surgical action and the level of microsurgical hand tremor. However, statistically significant changes in hand tremor were observed both in standing and sitting positions with increased time of microsurgical action.Conclusion. The choice between sitting or standing pose for microsurgical operation is not a factor significantly affecting microsurgeon’s spatial accuracy of movement and hand tremor. Duration of surgical intervention affects the level of microsurgical hand tremor.
Application of The Unified Kill Chain model for commercial unmanned aircraft systems
Authors: Кузьмин А.Р. , Савельев М.Ф. 
Published: April 2024

Целью статьи является анализ применимости модели объединенной цепочки враждебных действий (The Unified Kill Chain) для беспилотных авиационных систем, преимуществ обеспечения информационной безопасности беспилотных авиационных систем от применения данной модели. В настоящей работе авторы использовали метод системного анализа открытых источников по теме, а также синтез на его базе. Результатом применения данных методов стали описанные применительно к беспилотным авиационным системам этапы the Unified Kill Chain и выработка подходов к минимизации актуальных угроз безопасности беспилотных авиационных систем. Представленная статья является одной из первых работ, посвященных применению the Unified Kill Chain в интересах информационной безопасности беспилотных авиационных систем.
The purpose of the article is to analyze the applicability of The Unified Kill Chain model for unmanned aircraft systems, the benefits for ensuring the information security of unmanned aerial systems due to the use of this model. In this work, the authors use the method of system analysis of open sources on the topic, as well as synthesis based on it. The application of these methods resulted in the stages of The Unified Kill Chain model described in relation to unmanned aerial systems and the development of approaches to minimizing actual threats to the safety of unmanned aerial systems. The presented article is one of the first works devoted to the use of The Unified Kill Chain for UAS’ information security.