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Assessment of dental anxiety between dental students and law students
No full textCilj istraživanja: Cilj istraživanja bio je usporediti razine dentalne anksioznosti između studenata dentalne medicine i studenata prava
Nacrt studije: Presječno istraživanje provedeno na Fakultetu za dentalnu medicinu i zdravstvo Sveučilišta Josip Juraj Strossmayer u Osijeku i Pravnom fakultetu Sveučilišta u Rijeci
Materijali i metode: Istraživanje je uključilo 100 studenata – 50 studenata dentalne medicine i 50 studenata prava. Podaci su prikupljeni putem anonimne online ankete koja je sadržavala standardiziranu MDAS skalu te dodatna pitanja vezana uz oralnu higijenu, prethodna iskustva i izvore dentalne anksioznosti.
Rezultati: Rezultati su pokazali značajno nižu razinu dentalne anksioznosti među studentima dentalne medicine u odnosu na studente prava. Također utvrđeno je da studenti dentalne medicine češće posjećuju stomatologa i pozitivnije ocjenjuju prethodna stomatološka iskustva. Najveće razlike u anksioznosti zabilježene su u situacijama poput primanja injekcije lokalnog anestetika i čekanja u čekaonici. Zvuk stomatološke turbine identificiran je kao najčešći izvor straha kod studenata prava, dok su studenti dentalne medicine pokazali višu razinu smanjene osjetljivosti prema takvim podražajima.
Zaključak: Edukacija, profesionalna izloženost i pozitivna prethodna iskustva značajno doprinose smanjenju dentalne anksioznosti. Studenti prava, kao populacija bez stručnog znanja o dentalnim zahvatima, iskazuju višu razinu straha, što ukazuje na potrebu za preventivnim i edukativnim programima usmjerenima na smanjenje dentalnog straha među studentima nedentalnih struka.Objectives: The aim of the research was to compare the levels of dental anxiety between dental students and law students
Study Design: Cross-sectional study conducted at the Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University in Osijek and the Faculty of Law, University of Rijeka
Materials and Methods: The study included 100 students – 50 dental students and 50 law students. Data were collected via an anonymous online survey that included a standardized MDAS scale and additional questions related to oral hygiene, previous experiences and sources of dental anxiety.
Results: The results showed a significantly lower level of dental anxiety among dental students compared to law students. It was also found that dental students visit the dentist more often and evaluate their previous dental experiences more positively. The largest differences in anxiety were recorded in situations such as receiving an injection of local anesthetic and waiting in the waiting room. The sound of the dental turbine was identified as the most common source of fear among law students, while dental students showed a higher level of desensitization to such stimuli.
Conclusion: Education, professional exposure, and positive previous experiences significantly contribute to the reduction of dental anxiety. Law students, as a population without professional knowledge of dental procedures, show a higher level of fear, which indicates the need for preventive and educational programs aimed at reducing dental fear among non-dental students
Characterization of Fruit Wine Made from Organically Grown Pears Produced by Using Selected Species of Commercial Wine Yeast
No full textCilj rada bio je istražiti utjecaj selekcioniranih vinskih kvasaca roda Saccharomyces (Actiflore® AC i RMS2 te Zymaflore® 011 BIO i X16) i ne-Saccharomyces vinskog kvasca Torulaspora delbrueckii (Zymaflore®, ALPHA TD) na kinetiku fermentacije, udio ukupnih polifenola i flavonoida te antioksidacijsku aktivnost u soku/vinu od kruške (Pyrus communis L.) iz ekološkog uzgoja. Kinetika fermentacije praćena je u laboratorijskom mjerilu primjenom serija mikrofermentacijskih eksperimenata. Rezultati su pokazali da se svi odabrani vinski kvasci mogu uspješno primijeniti u proizvodnji voćnog vina od kruške. Najveća specifična brzina fermentacije postignuta je primjenom komercijalnog kvasca Actiflore® AC. U uzorcima koji su inokulirani kokulturom Saccharomyces i ne- Saccharomyces vinskih kvasaca (RMS2 i ALPHA TD) uočena je smanjena fermentacijska aktivnost, što je rezultiralo manjim sadržajem alkohola u dobivenim voćnim vinima. Usporedbom udjela ukupnih polifenola i flavonoida, te antioksidacijske aktivnosti u soku od kruške te dobivenim voćnim vinima od kruške vidljivo je kako tijekom fermentacije dolazi do smanjenja svih navedenih parametara.The objective of this study was to examine the impact of selected wine yeasts of the genus Saccharomyces (Actiflore® AC, RMS2, Zymaflore® 011 BIO, and X16) and the non-Saccharomyces yeast Torulaspora delbrueckii (Zymaflore® ALPHA TD) on fermentation kinetics, total polyphenol and flavonoid content, and antioxidant activity in organically grown pear (Pyrus communis L.) juice/wine. Fermentation kinetics were assessed at laboratory scale through a series of microfermentation trials. The results demonstrated that all tested yeasts are suitable for pear wine production. The highest specific fermentation rate was observed with Actiflore® AC. Co-inoculation with RMS2 and ALPHA TD resulted in reduced fermentation activity and subsequently lower ethanol content. A comparison of the total polyphenol and flavonoid content and antioxidant activity in the juice and obtained wines indicated a decrease in all measured parameters during fermentation
Knowledge and opinions of students of the Faculty of Dental Medicine and Health in Osijek about the healthcare system of the Republic of Croatia
No full textCilj istraživanja: Ispitati znanje i mišljenje studenata Fakulteta za dentalnu medicinu i
zdravstvo Osijek o zdravstvenom sustavu Republike Hrvatske s naglaskom na različite aspekte
zdravstvene zaštite.
Nacrt studije: Provedeno je presječno istraživanje na studentima Fakulteta za dentalnu
medicinu i zdravstvo Osijek.
Ispitanici i metode: Sudjelovao je 271 ispitanik koji je student Fakulteta. Podaci su prikupljeni
anketnim upitnikom iz tri dijela u online obliku: socio-demografski upitnik, test znanja o
zdravstvenom sustavu, tvrdnje usmjerene na mišljenje o zdravstvenom sustavu.
Rezultati: Studenti imaju izvrsno znanje o zdravstvenom sustavu Republike Hrvatske.
Rezultati su ukazali na visoku razinu neodlučnosti i nezadovoljstva koje se odnosi na
funkcioniranje zdravstvenog sustava. Najviše je istaknuto nezadovoljstvo dostupnošću
zdravstvenih usluga u udaljenim i otočnim područjima, primarnom zdravstvenom zaštitom te
vremenom čekanja na zdravstvene usluge.
Zaključak: istraživanjem je utvrđeno da studenti imaju izvrsno znanje o zdravstvenom sustavu.
Međutim, mišljenje studenata je da su nezadovoljni određenim aspektima zdravstvenog sustava
koje bi trebalo poboljšati.Aim of the study: To examine the knowledge and opinions of students of the Faculty of Dental
Medicine and Health Osijek about the healthcare system of the Republic of Croatia, with an
emphasis on various aspects of healthcare.
Study design: A cross-sectional study was conducted on students of the Faculty of Dental
Medicine and Health Osijek.
Subjects and methods: 271 Faculty students participated. Data were collected using a threepart
questionnaire: socio-demographic questionnaire, health system knowledge test, and
statements focused on opinions about the health system.
Results: Students have excellent knowledge of the healthcare system in the Republic of Croatia.
The results indicated a high level of indecision and dissatisfaction regarding the functioning of
the healthcare system. The most prominent dissatisfaction was with the availability of
healthcare services in remote and island areas, primary healthcare, and waiting times for
healthcare services.
Conclusion: The research found that students have excellent knowledge of the healthcare
system. However, students' opinion is that they are dissatisfied with certain aspects of the health
care system that should be improved
Acute kidney failure in surgical patients treated at the Department of Intensive Care Medicine, University Hospital Osijek
No full textCiljevi istraživanja: Usporediti težinu kliničke slike, demografska i laboratorijska obilježja te
klinički ishod pacijenata s akutnim bubrežnim zatajenjem hospitaliziranih u JIL s pacijentima
koji nemaju akutno bubrežno zatajenje kao ulazni kriterij za sudjelovanje u istraživanju
hospitaliziranih u JIL-u (kontrolna skupina).
Nacrt studije: Presječno istraživanje
Bolesnici i metode: Ispitivani su demografski pokazatelji, komorbiditeti, vrsta i broj operacija,
duljina mehaničke ventilacije, SAPS II zbroj, laboratorijski pokazatelji i klinički ishod liječenja
u JIL-u. U istraživanju je sudjelovao 101 pacijent s ABZ hospitaliziran tijekom 2024. godine, a
kontrolu su činila 262 pacijenta hospitalizirana tijekom 2019. i 2020. godine.
Rezultati: Studija je pokazala da su pacijenti s ABZ stariji (P = 0,005), većinom hospitalizirani
nakon hitnog kirurškog zahvata (P = 0,005). To su pacijenti s više kardiovaskularnih,
metaboličkih, bubrežnih i koagulopatskih komorbiditeta koji su češće podvrgnuti
reoperacijama (39 % prema 16 %). Nadalje, SAPS II zbroj tih pacijenata je pri prijemu i otpustu
bio viši (medijan 38 prema 33) i laboratorijski nalazi su bili lošiji (CRP P < 0,001). Ishodi
liječenja pacijenata s akutnim bubrežnim zatajenjem bili su lošiji: smrtnost je bila veća (39 %
prema 19 %) te je duljina mehaničke ventilacije bila značajno duža nego kod pacijenata
kontrolne skupine (medijan 30 prema 9 sati).
Zaključak: Sepsa je najčešći uzrok ABZ-a kod pacijenata u JIL-u. Ti pacijenti su stariji te
većinski hospitalizirani nakon hitnih zahvata. Imali su više komorbiditeta, više vrijednosti
upalnih parametara, dulje trajanje mehaničke ventilacije, bili su lošijeg zdravstvenog stanja te
su imali lošije kliničke ishode – mehanička ventilacija trajala je duže, a smrtnost je bila veća.Objectives: To compare the severity of clinical presentation, demographic and laboratory
characteristics, and clinical outcomes between patients with acute kidney injury (AKI) admitted
to the intensive care unit (ICU) and patients without AKI as an inclusion criterion for
participation in the study (control group), also admitted to the ICU.
Study Design: Cross-sectional study.
Patients and Methods: Demographic data, comorbidities, type and number of surgical
procedures, duration of mechanical ventilation, SAPS II scores, laboratory parameters, and
clinical outcomes in the ICU were analyzed. The study included 101 patients with AKI
hospitalized in 2024, and a control group of 262 patients hospitalized in 2019 and 2020.
Results: The study showed that patients with AKI were older (P = 0.005) and were
predominantly hospitalized following emergency surgical procedures (P = 0.005). They had
more cardiovascular, metabolic, renal, and coagulopathic comorbidities and more frequently
required reoperations (39 % vs. 16 %). Additionally, their SAPS II scores were higher at both
admission and discharge (median 38 vs. 33), laboratory findings were worse (CRP P < 0.001),
and the duration of mechanical ventilation was significantly longer (median 30 vs. 9 hours).
Finally, AKI patients had a higher mortality rate (39 % vs. 19 %).
Conclusion: Sepsis is the most common cause of acute kidney injury (AKI) in ICU patients.
These patients are older and mostly hospitalized after emergency procedures. They had more
comorbidities, higher inflammatory marker levels, poorer overall health status, and worse
clinical outcomes, including longer duration of mechanical ventilation and higher mortality
rate
Mentoring as an Important Tool in Personal and Professional Development : Final paper
No full textTema ovog završnog rada je prikaz mentoriranja kao važnog alata u osobnom i profesionalnom
razvoju. Cilj je bio prikazati na koji način mentorstvo doprinosi rastu i napredovanju mentora i
mentorirane osobe te kakvu ulogu ima u razvoju organizacije kroz prijenos znanja, jačanje
komunikacijski vještina i izgradnju međusobnog povjerenja. U teorijskom dijelu rada definirani
su osnovni pojmovi i vrste mentoriranja, značaj uloge mentora, komponente uspješnog
mentorskog odnosa i faze kroz koje odnos prolazi. Posebna pažnja posvećena je važnosti
mentora u profesionalnom razvoju, jer mentor kroz vođenje i podršku razvija vlastite vještine i
priprema se za složenije zadatke. Također, raspravlja se o tome kako osobe koje primaju
mentorstvo stječu samopouzdanje, bolje prepoznaju vlastite ciljeve. Iako proces mentorstva
može biti izazovan i zahtjeva vrijeme, planiranje i jasno komuniciranje. Prednosti poput jačanja
stručnosti, povećanja zadovoljstva na radu i motivacije nadmašuju potencijalne izazove. Na
kraju naglašena je važnost prenošenja znanja i osobni razvoj. Naglašena su i daljnja
usavršavanja i prednosti mentoriranja.The topic of this final paper is a presentation of mentoring as an important tool in personal and
professional development. The aim was to show how mentoring contributes to the growth and
advancement of the mentor and the mentee, and what role it plays in the development of the
organization through the transfer of knowledge, strengthening communication skills and
building mutual trust. The theoretical part of the paper defines the basic concepts and types of
mentoring, the importance of the mentor's role, the components of a successful mentoring
relationship and the phases the relationship goes through. Special attention is paid to the
importance of mentors in professional development, because through guidance and support, the
mentor develops his own skills and prepares for more complex tasks. It also discusses how
people who receive mentoring gain self-confidence, better recognize their own goals. Although
the mentoring process can be challenging and requires time, planning and clear communication.
The benefits such as strengthening expertise, increasing job satisfaction and motivation
outweigh the potential challenges. Finally, the importance of knowledge transfer and personal
development is emphasized. Further training and the advantages of mentoring are also
emphasized
Preparation and characterization of macrocyclic compounds with pyridine-2,6-dicarboxylic acid hydrazide
No full textCilj ovog diplomskog rada je pripraviti nove makrocikličke spojeve koriste i hidrazidni derivat piridin-2,6-dikarboksilne kiseline i aromatske dialdehide kao polazne reaktante. Sinteza cikličkog hidrazidnog derivata provodi se u tri koraka, gdje je prvi korak esterifikacija u kojoj sudjeluju piridin-2,6-dikarboksilna kiselina i etanol. U drugom koraku dietilpiridin-2,6-dikarboksilat reagira s
molekulama hidrazina pri emu nastaje hidrazidni derivat dipikolinske kiseline i na posljetku, u trećem koraku, dolazi do stvaranja finalnog makrocikličkog spoja reakcijom hidrazidnog derivata dipikolinske kiseline i aromatskih dialdehida u etanolu. Struktura i svojstva novonastalih makrocikličkih spojeva određena su 1H NMR, MS i FT-IR spektroskopijom. U ovom radu uspješno su dobivena i identificirana četiri nova makrociklička spoja.The aim of this thesis is to prepare new macrocyclic compounds using the hydrazide derivative of pyridine-2,6-dicarboxylic acid and aromatic dialdehydes as starting reactants. The synthesis of cyclic hydrazide derivative is carried out in three steps, where the first step involves esterification of pyridine-2,6-dicarboxylic acid acid and ethanol. In the second step, diethylpyridine-2,6-dicarboxylate reacts with hydrazine molecules, resulting in the formation of the hydrazide derivative of pyridine-2,6-dicarboxylic acid, and finally, in the third step, the formation of the final macrocyclic compound occurs by the reaction of the hydrazide derivative of pyridine-2,6-dicarboxylic acid and aromatic dialdehydes in ethanol. Structure and properties of the newly formed macrocyclic compounds have been characterized using 1H NMR, MS, and FT-IR spectroscopy. In this thesis, four new macrocyclic compounds were successfully obtained and identified
Comparison of the results of treatment of trigger finger with and without the use of a compression bandage
No full textCilj istraživanja: Ispitati razlike u rezultatima otvorenog kirurškog liječenja pacijenata sa
škljocavim prstom u općoj anesteziji s primjenom kompresijske poveske i lokalnoj anesteziji
bez primjene iste.
Nacrt studije: Presječna studija s povijesnim podacima.
Bolesnici i metode: Bolesnici s operiranim škljocavim prstom podijeljeni su u dvije skupine,
prvu skupinu čine pacijenti operirani u općoj anesteziji s primjenom kompresijske poveske, a
druga su pacijenti operirani u lokalnoj anesteziji bez primjene kompresijske poveske. Podaci o
dobi spolu, komorbiditetima i poteškoćama su dobiveni iz bolničkog informacijskog sustava te
su uspoređeni.
Rezultati: Pacijenti operirani u lokalnoj anesteziji bez kompresijske poveske imali su
numerički manje poteškoća nakon operacije te nisu imali težih komplikacija za razliku od onih
operiranih u općoj anesteziji s primjenom blijede staze, no to nije činilo statistički značajnu
razliku zbog veličine uzorka. Razlike u osjetu boli nije bilo. Škljocavi prst češće zahvaća žene
u omjeru 2,4:1. Najčešći komorbiditet bolesnika je dijabetes tip II, medijan dobi bolesnika
iznosi 59 godina te im je najčešće zahvaćen palac desne ruke.
Zaključak: Otvorena operacija škljocavog prsta u lokalnoj anesteziji bez primjene blijede staze
pokazala je nešto bolje rezultate. Nakon operacije ti pacijenti su imali manje poteškoća i one su
bile blaže, no to nije činilo statistički značajnu razliku zbog veličine uzorka pacijenata. Potrebna
su daljnja istraživanja kako bi dodatno istražili ovu temu.Comparison of the results of treatment of trigger finger with and without the use of a
compression bandage
Objective: To examine differences in the outcomes of open surgical treatment for trigger finger
performed under general anesthesia with the use of a tourniquet versus local anesthesia without
a tourniquet.
Study Design: A cross-sectional study using retrospective data.
Patients and Methods: Patients who underwent open surgery for trigger finger were divided
into two groups. The first group included patients operated under general anesthesia with the
use of a tourniquet, while the second group included patients operated under local anesthesia
without a tourniquet. Data on age, sex, comorbidities, and postoperative difficulties were
retrieved from the hospital information system and compared.
Results: Patients operated under local anesthesia without a tourniquet experienced fewer
postoperative difficulties and no major complications, unlike those operated under general
anesthesia with a tourniquet. However, this difference was not statistically significant due to
the sample size. There was no difference in reported pain levels. Trigger finger was more
common in women, with a female-to-male ratio of 2,4:1. The most frequent comorbidity was
type II diabetes. The median age of patients was 59 years, and the most commonly affected
digit was the right thumb.
Conclusion: Open surgical treatment of trigger finger performed under local anesthesia without
a tourniquet showed slightly better outcomes. These patients experienced fewer and milder
postoperative difficulties, although the difference was not statistically significant due to the
limited sample size. Further research is needed to explore this topic in more detail
Synthesis and characterization of hydroxyapatite from natural calcium carbonate
No full textHidroksiapatit (HAP), spoj kemijske formule Ca10(PO4)6(OH)2, jedan je od najznačajnijih biomaterijala zbog svoje iznimne biokompatibilnosti te strukturne sličnosti s mineralnim dijelom ljudske kosti. Ovaj završni rad usmjeren je na istraživanje temeljnih fizikalno-kemijskih svojstava HAP-a, njegove kristalne strukture, metoda sinteze te širokog spektra primjene u biomedicini, osobito u regeneraciji tvrdih tkiva. Posebna pozornost posvećena je metodi taloženja, u kojoj se fosforna kiselina postupno dodaje u suspenziju kalcijeva hidroksida, što rezultira dobivanjem hidroksiapatita u obliku praha. Važno je istaknuti da je kalcij korišten u ovom procesu dobiven iz prirodnog izvora, kalcijevog karbonata izoliranog iz ljuski kokošjih jaja, čime se dodatno ističe održivost i ekološka prihvatljivost korištene metode. U eksperimentalnom dijelu provedena je laboratorijska sinteza HAP-a, a karakterizacija dobivenog uzorka napravljena je pomoću rendgenske difrakcije na polikristalnom uzorku (PXRD), infracrvene spektroskopije s Fourierovom transformacijom (FT-IR) te analizom površinskih svojstava Brunauer–Emmett–Teller metodom (B.E.T.). Rezultati analiza potvrdili su formiranje kristalne faze tipične za HAP te prisutnost funkcijskih skupina karakterističnih za navedeni spoj. Dobiveni hidroksiapatit pokazuje visoku razinu čistoće i fizikalno-kemijska svojstva pogodna za biomedicinske
primjene. Korištena metoda sinteze pokazala se jednostavnom, ekonomičnom i učinkovitom, čime se potvrđuje njezina prikladnost za daljnji razvoj funkcionalnih biomaterijala, osobito u dentalnoj i ortopedskoj medicini.Hydroxyapatite (HAP), a compound with the chemical formula Ca10(PO4)6(OH)2, is one of the most important biomaterials due to its exceptional biocompatibility and structural similarity to the mineral component of human bone. This thesis deals with the investigation of the basic physico-chemical properties of HAP, its crystal structure, the synthesis methods and its various applications in biomedicine, especially in hard tissue regeneration. Particular attention is paid to the precipitation
method, in which phosphoric acid is gradually added to a calcium hydroxide suspension, resulting in the formation of hydroxyapatite in powder form. It is important to mention that the calcium used in this process comes from a natural source, namely calcium carbonate extracted from chicken eggshells, which emphasises the sustainability and environmental friendliness of the method used. In the experimental part, HAP was synthesised in the laboratory and the resulting sample was characterised using powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR) and surface analysis using the Brunauer–Emmett–Teller (B.E.T.) method. The analysis confirmed the formation of a crystalline phase typical of HAP and the presence of the functional groups characteristic of this compound. Thesynthesised hydroxyapatite exhibited high purity and physicochemical properties suitable for biomedical applications. To summarise, the synthesis method used proved to be simple, cost-effective and efficient, which confirms its suitability for the further development of functional biomaterials, particularly in dentistry and orthopaedics
Parents' attitudes towards the transdisciplinary approach in rehabilitation of children with developmental disabilities and their satisfaction with the therapies provided
No full textCilj istraživanja: Cilj istraživanja bio je ispitati stavove roditelja djece s teškoćama u razvoju o transdisciplinarnome pristupu u rehabilitaciji i njihovo zadovoljstvo provedenim terapijama.
Ispitanici i metode: U istraživanju je sudjelovalo 55 roditelja, većinom majki (78,2 %), u dobi između 26 i 56 godina. Podaci su prikupljeni putem anonimnog online upitnika. Kategorički podaci prikazani su apsolutnim i relativnim frekvencijama, dok su numerički podaci opisani medijanom i interkvartilnim rasponom. Analize su provedene Hi-kvadrat testom, Mann-Whitneyevim U testom i Kruskal-Wallisovim testom (post hoc Dunnov test). Statistička obrada izvršena je u JASP-u (verzija 0.19.3).
Rezultati: Polovina roditelja (50,9 %) nikada nije dobila informacije o transdisciplinarnome pristupu u rehabilitaciji njihove djece. Informiraniji roditelji iskazali su višu razinu zadovoljstva timskom suradnjom (P < 0,001). Premda nije bilo statistički značajne razlike (P = 0,068), roditelji koji se osjećaju ravnopravno uključeni u donošenje odluka bili su skloniji višem zadovoljstvu. Najviše su ocijenjene fizioterapija, senzorna integracija i radna terapija (medijan 5), a nešto niže logopedska i psihološka podrška (medijan 4). Suradnja stručnjaka ocijenjena je kao važna, no često nedovoljna zbog organizacijskih prepreka.
Zaključak: Roditelji prepoznaju vrijednost transdisciplinarnoga pristupa, osobito kada su informirani i uključeni u terapijski proces. Dobiveni su rezultati u skladu s recentnim istraživanjima koja potvrđuju važnost koordinirane suradnje u rehabilitaciji djece s teškoćama.Aim of the study: The aim of the study was to examine the attitudes of parents of children with disabilities towards the transdisciplinary approach in rehabilitation and their satisfaction with the therapies received.
Participants and methods: The study included 55 parents, mostly mothers (78.2%), aged between 26 and 56 years. Data were collected via an anonymous online questionnaire. Categorical data were presented as absolute and relative frequencies, while numerical data were described by median and interquartile range. Analyses were conducted using the Chi-square test, the Mann–Whitney U test, and the Kruskal-Wallis test (post hoc Dunn’s test). Statistical processing was performed using JASP (version 0.19.3).
Results: Half of the parents (50.9%) were never informed about the transdisciplinary approach in the rehabilitation of their children. More informed parents reported higher satisfaction with team cooperation (P < 0.001). Although not statistically significant (P = 0.068), parents who felt equally involved in decision-making tended to report higher satisfaction. Sensory integration, physiotherapy and occupational therapy were rated highest (median 5), with somewhat lower scores for speech therapy and psychological support (median 4). Cooperation among specialists was seen as important but often insufficient due to organizational barriers.
Conclusion: Parents recognize the value of the transdisciplinary approach, especially when informed and involved in the therapeutic process. The results align with recent studies confirming the importance of coordinated collaboration in the rehabilitation of children with disabilities
Development and evaluation of a general deep learning model for quantification of marginal bone loss around dental implants on radiological images
No full textCilj istraživanja: : Cilj ovog istraživanja bio je razvoj i evaluacija općeg modela dubokog učenja,
temeljenog na YOLOv11x-pose arhitekturi, za automatsku detekciju šest ključnih točaka na
dentalnim implantatima i posljedičnu kvantifikaciju periimplantnog marginalnog gubitka kosti
(MGK) na radiološkim snimkama, izraženu kao postotak duljine implantata.
Nacrt studije: Provedena je retrospektivna analitička studija za razvoj i evaluaciju dijagnostičkog
modela.
Materijal i metode: Za treniranje, validaciju i testiranje modela korišten je skup podataka formiran
iz javno dostupnih baza (ukupno 1214 radioloških snimaka s 1570 implantata), podijeljen u omjeru
80:10:10. Anotaciju je proveo educirani član tima uz validaciju specijalista oralne kirurgije.
Performanse su procijenjene korištenjem sljedećih metrika: preklapanje nad unijom (IoU), sličnost
ključnih točaka objekta (OKS), srednja prosječna preciznost (mAP), skalirana euklidska pogreška
lokalizacije te za MGK metrika srednje apsolutne pogreške (MAE), korijena srednje kvadratne
pogreške (RMSE) i Pearsonova koeficijenta korelacije (r).
Rezultati: Na testnom skupu (N = 152 implantata), model je postigao srednji IoU od 0,8434 i
srednji OKS od 0,8808. mAP@50 za detekciju graničnih okvira i ključnih točaka bio je 0,9933.
Ukupna prosječna skalirana euklidska pogreška ključnih točaka iznosila je 2,98 %. Za
kvantifikaciju MGK, MAE iznosila je 6,85 %, a Pearsonov koeficijent korelacije (r) 0,6625.
Zaključak: Razvijeni YOLOv11x-pose model pokazao je visoku točnost u detekciji implantata i
lokalizaciji ključnih točaka na internom skupu podataka. Kvantifikacija MGK pokazala je
umjereno slaganje s procjenama stručnjaka. Model ima potencijal kao pomoćni dijagnostički alat,
no potrebna su daljnja usavršavanja i vanjska validacija.Objectives: The objective of this study was to develop and evaluate a general deep learning model,
based on the YOLOv11x-pose architecture, for the automatic detection of six keypoints on dental
implants and the subsequent quantification of peri-implant marginal bone loss (MBL) on
radiological images, expressed as a percentage of implant length.
Study Design: A retrospective analytical study was conducted for the development and evaluation
of a diagnostic model.
Materials and Methods: A dataset formed from publicly available databases (totalling 1214
radiological images with 1570 implants) was used for training, validation, and testing of the model,
split into an 80:10:10 ratio. Annotations were performed by a trained team member and validated
by an oral surgery specialist. The performance was evaluated using the following metrics:
Intersection over Union (IoU), Object Keypoint Similarity (OKS), mean Average Precision (mAP),
scaled Euclidean localisation error, and, for MGK, the metrics of Mean Absolute Error (MAE),
Root Mean Squared Error (RMSE), and Pearson correlation coefficient (r).
Results: On the test set (N = 152 implants), the model achieved a mean IoU of 0.8434 and a mean
OKS of 0.8808. The mAP@50 for bounding box and keypoint detection was 0.9933. The overall
average scaled Euclidean distance error for keypoints was 2.98%. For MBL quantification, the
MAE was 6.85%, and Pearson's correlation coefficient (r) was 0.6625.
Conclusion: The developed YOLOv11x-pose model demonstrated high accuracy in detecting
implants and localising keypoints on the internal dataset. MBL quantification showed moderate
agreement with expert assessments. The model has potential as an auxiliary diagnostic tool, but
further refinements and external validation are required