Evaluation of clinical and radiographic warning signs for prediction of oroantral communication following tooth extractions.

OBJECTIVES: Oroantral communication (OAC) is a relatively common and mild complication of maxillary tooth extractions. Preoperative prediction of OAC can reduce treatment duration and prepare both operators and patients for the procedure. This study aims to identify alarming radiographic and clinical indicators that can predict OAC therefore assisting clinical decision making to practicing general dentists. METHODS: In this retrospective case-control study the OAC group consisting of 97 cases and a control group twice the size was established. Clinical data were collected, and measurements were conducted separately by two blinded observers on digital panoramic radiographs. Inter-rater reliability was assessed. In case of disagreement a third observer's results were utilized. The correlation between OAC and demographic data (age, sex), as well as various factors assessed on panoramic radiographs (including, but not limited to, the length of the root, root projection into the sinus, bone width, presence of mesial and distal adjacent teeth), was statistically evaluated. RESULTS: Inter-rater reliability was found to be excellent. Several factors were identified as potential predictors of OAC. According to our model, the strongest predictors were the distance between the cemento-enamel junction and marginal bone, extent of root projection into the sinus, presence of sinus recess around the roots, angulation, and absence of the mesial adjacent tooth. CONCLUSIONS: Well-defined measurements on panoramic radiographs may aid in predicting OAC. Further prospective investigations are necessary to confirm these indicators and address factors related to clinical examination and operation. CLINICAL RELEVANCE: We present several clinical and radiographic warning signs of OAC that can facilitate pre-extraction decision-making.

Unlocking the potential: laser surface modifications for titanium dental implants.

The review critically evaluates the current state of studies investigating laser irradiation for modifying titanium surfaces to enhance the biointegration of dental implants. Laser modification is a rapidly evolving physicochemical surface modification process with the potential to revolutionize dental implant technology. A thorough search of electronic databases, including PubMed, Science Direct, MEDLINE, and Web of Knowledge, was conducted to identify relevant articles. The review focuses on the surface features of laser-modified implants, encompassing in vitro cell culture experiments, rare animal experiments, and limited clinical trials. Of the 26 selected sources, 21 describe surface features, while only two involve in vivo human experiments. The review highlights the lack of long-term clinical experience and calls for further research to mature these technologies. Despite the absence of a consensus on optimal laser types and settings, the overall results are promising, with few negative outcomes. As research in laser irradiation of titanium surfaces progresses, significant advancements in dental implant technology and improved patient well-being are anticipated.

Home Range of the Caspian Whipsnake Dolichophis caspius (Gmelin, 1789) in a Threatened Peri-Urban Population.

Semi-natural environments within cities can provide habitats for vulnerable reptile species. Better understanding of their habitat use and home range sizes is important for their conservation. We investigated the spatial ecology of Caspian whipsnakes (Dolicophis caspius) in a peri-urban habitat in Budapest, Hungary. We used radiotelemetry to track five adult snakes and analyzed their microhabitat preferences, home range sizes and daily movements. The Caspian whipsnakes intensively utilized areas covered with woody vegetation, with a high density of hibernacula. The tracked snakes used an area of 40.15 ha during the activity period from spring to autumn, but for the winter, they withdrew to a central area of 1.75 ha, abundant in hibernacula. During the activity period the individual home range sizes varied between 6.1 and 15.5 ha, estimated using the minimum convex polygon (MCP); however, for the entire datasets of the individuals, the adaptive kernel method gave the highest mean (13.8 ha), while the LoCoH-R yielded the smallest home ranges (5.19 ha). We found that the average daily displacement for the different individuals ranged between 12.6 and 36.6 m during their main activity season. In the study area, the whipsnakes currently have enough space for foraging, but the restricted spatial distribution of hibernacula, which is mainly available in the central dry rocky forest and partly in the shrubby areas, can limit the extent of the suitable habitat. Human activities and anthropogenic disturbances, especially around hibernacula, may exert pressure on this peri-urban snake population.

Foraging decisions with conservation consequences: Interaction between beavers and invasive tree species.

Herbivore species can either hinder or accelerate the invasion of woody species through selective utilization. Therefore, an exploration of foraging decisions can contribute to the understanding and forecasting of woody plant invasions. Despite the large distribution range and rapidly growing abundance of beaver species across the Northern Hemisphere, only a few studies focus on the interaction between beavers and invasive woody plants.We collected data on the woody plant supply and utilization at 20 study sites in Hungary, at two fixed distances from the water. The following parameters were registered: taxon, trunk diameter, type of utilization, and carving depth. Altogether 5401 units (trunks and thick branches) were identified individually. We developed a statistical protocol that uses a dual approach, combining whole-database and transect-level analyses to examine foraging strategy.Taxon, diameter, and distance from water all had a significant effect on foraging decisions. The order of preference for the four most abundant taxa was Populus spp. (softwood), Salix spp. (softwood), Fraxinus pennsylvanica (invasive hardwood), and Acer negundo (invasive hardwood). The diameter influenced the type of utilization, as units with greater diameter were rather carved or debarked than felled. According to the central-place foraging strategy, the intensity of the foraging decreased with the distance from the water, while both the taxon and diameter selectivity increased. This suggests stronger modification of the woody vegetation directly along the waterbank, together with a weaker impact further from the water.In contrast to invasive trees, for which utilization occurred almost exclusively in the smallest diameter class, even the largest softwood trees were utilized by means of carving and debarking. This may lead to the gradual loss of softwoods or the transformation of them into shrubby forms. After the return of the beaver, mature stages of softwood stands and thus the structural heterogeneity of floodplain woody vegetation could be supported by the maintenance of sufficiently large active floodplains.The beaver accelerates the shift of the canopy layer's species composition toward invasive hardwood species, supporting the enemy release hypothesis. However, the long-term impact will also depend on how plants respond to different types of utilization and on their ability to regenerate, which are still unexplored issues in this environment. Our results should be integrated with knowledge about factors influencing the competitiveness of the studied native and invasive woody species to support floodplain conservation and reconstruction.

Testing pigeon control efficiency by different methods in urban industrial areas, Hungary.

The development of cities and urban sprawl has made room for wildlife inhabiting human environments. Among birds, feral pigeons (Columba livia domestica) are often present in large numbers in the cities. Problems related to pigeon occurrence result in economic loss and health issues for humans. There are different methods of controlling pigeon populations in urban areas. In this study, we compared three techniques that can be used for pigeon pest control. In two urban industrial sites in Hungary, we used trapping, falconry (in both Study Area 1 and 2) and mist-netting (only in Study Area 2) to remove pigeons. We compared the effectiveness and limitations of each method. Our results show that over 105 days in Study Area 1, we managed to remove 173 individual pigeons. We did not find a significant difference between the effectiveness of trapping or falconry. In Study Area 2, the overall number of pigeons removed was 1412 over a period of 150 days. There, we managed to catch significantly more birds by netting than by trapping or falconry, but the latter two did not differ statistically. We recommend a combination of techniques for pigeon control. Mist-netting can be the most effective way for direct pigeon removal, whereas trapping is an easier but less efficient method to catch pigeons. Falconry is the least efficient in pigeon catching and requires the most investments, but the bird of prey may chase the pigeons away for a short time.

Preserving for the future the - once widespread but now vanishing - knowledge on traditional pig grazing in forests and marshes (Sava-Bosut floodplain, Serbia).

BACKGROUND: Traditional knowledge is key for sustainability, but it is rapidly disappearing. Pig keeping in forests and marshes is an ancient, once widespread, now vanishing practice, with a major economic and ecological potential. The knowledge of pig keepers and the foraging activity of pigs are hardly documented. METHODS: We studied the knowledge of traditional pig keepers (svinjars) on wild plants and pig foraging on the Sava-Bosut forest-marsh complex in Serbia. We conducted picture-based interviews about 234 locally common and/or salient plant species, and participatory fieldwork (11 days) and visual observation (21 days) on pig foraging. RESULTS: 181 wild plant species were known by svinjars and 106 taxa were consumed by pigs. Svinjars knew well and could name most regularly foraged species. 98 species were reported by svinjars as foraged and 56 as not eaten. 28 species were observed by the authors as eaten regularly, while 21 were nibbled and 17 avoided. Contradictory information on foraging was rare both among svinjars (8 species) and between svinjars and researchers (7 species); several of these species were rare. Leaves of 92, fruits or seeds of 21 and 'roots' of 20 species were reported or observed as eaten, usually with high seasonality. Svinjars were overall observant, but knew little about some less salient species (e.g. Veronica, Circaea). The most common forages (reported and/or observed) were fruits (Quercus, fleshy fruits), grasses (Agrostis, Glyceria), herbs (Ranunculus ficaria, Circaea), nutritious 'roots' (Carex spp., Iris), young shrub leaves (Crataegus, Carpinus) and 'tame' plants growing in the sun (Persicaria dubia, Erigeron annuus). Traditional, now extinct pig breeds were reported as less selective and more 'knowledgeable' about plants, as they received less additional fodder. Svinjars learnt their knowledge since childhood, from community members, but long-term personal observations and everyday encounters with pigs were also important sources of knowledge. CONCLUSIONS: A deeper understanding of pig foraging could contribute to using pigs in nature conservation management, resource management and organic farming, and to a better understanding of wild boar foraging. The knowledge of svinjars is a disappearing intangible cultural heritage of European importance. Knowledge holders deserve recognition, and legal and financial support to continue this tradition.

Prevalence and correlation of severe early childhood caries among preschool children in Pécs / A súlyos korai gyermekkori fogszuvasodás elofordulása és összefüggései pécsi bölcsodések között.

Összefoglaló. Bevezetés és célkituzés: A 3 év alatti korcsoportban a súlyos kisgyermekkori fogszuvasodás (S-ECC) gyakoriságának vizsgálata és a kisgyermekes szülok szájegészséggel kapcsolatos ismereteinek felmérése. Módszer: Háromszázhatvankét, 36 hónapos vagy annál fiatalabb gyermek (átlagéletkor: 28,49 ± 5,25 hónap) fogászati szurovizsgálatát végeztük el, és szüleik számára önkéntesen kitöltheto kérdoívet állítottunk össze. A 306 kitöltött kérdoív eredményét a gyermekek fogászati statusával egyénenként összevetve statisztikai analízist végeztünk. Eredmények: A gyermekek fogászati szurésekor 15,46% volt a cariesprevalencia: df-t-index = 0,685 ± 2,20; az általunk javasolt, az elotört fogak számával módosított df-t-index = 0,758 ± 2,42, SiC-index = 2,06 ± 3,33. A vizsgált populációban nem találtunk tömött vagy fogszuvasodás miatt eltávolított fogat. A korábban szájhigiénés tájékoztatásban részesült/nem részesült szülok gyermekeinél nem volt szignifikáns különbség a szuvas fogak számának (p = 0,196), a fogyasztott folyadék cukortartalmának (81,5%/71,5%) és a bevitel módjának (p = 0,453) tekintetében. A gyermeküket 6 hónapos korukig kizárólagosan anyatejjel tápláló édesanyák nagyobb eséllyel választották a vízzel történo itatást (75%/52%) pohárból (68,1%/28,8%) a késobbiekben. Az édesanya legmagasabb iskolai végzettsége kulcsszerepet játszik mind az anyatejes táplálás melletti elhivatottságban (felsofok: 53,4%, középfok: 34,2%, alapfok: 37,5%), mind a cariesfrekvencia csökkentésében (p = 0,015). Következtetés: A szüloi szájhigiénés prevenciós tájékoztatás jelenleg nem hatékony. Eredményeink alapján a fogászati szurést 1 éves kor elott meg kell kezdeni, amely a hatékony, rendszeres fogászati prevenciós tanácsadás lehetoségét is megteremtené. Szükségesnek látjuk a védonok és a gyermekháziorvosok folyamatos továbbképzésében a kisgyermekkori fogszuvasodás alapismereteinek integrációját. Orv Hetil. 2021; 162(22): 861-869. INTRODUCTION AND OBJECTIVE: To investigate the frequency of severe early childhood caries (S-ECC) under 3 years of age and to assess the oral health related knowledge of parents/guardians with preschool children. METHOD: 362 children younger than 36 months (mean age: 28.49 ± 5.25 months) were screened and a voluntary questionnaire for their parents was compiled. Statistical analysis was carried out comparing the results of the 306 completed questionnaires with the dental status of the screened children. RESULTS: Caries prevalence in the examined population was 15.46%, df-t index = 0.685 ± 2.20, our suggested modified df-t index based on the number of erupted teeth = 0.758 ± 2.42, SiC-index = 2.06 ± 3.33. No filled or extracted tooth due to caries was found in the study group. There was no significant difference in the number of carious teeth (p = 0.196), consumption of sugar-containing drinks (81.5%/71.5%) and administration of drinks (p = 0.453) in the case of children whose parents had previously received/not received oral hygiene information. Mothers who exclusively breastfed until the age of 6 months were more likely to choose to offer water (75%/52%) from cup (68.1%/28.8%) later. The mother's highest level of education plays a key role in both the commitment to breastfeeding (tertiary: 53.4%, secondary: 34.2%, primary: 37.5%) and in reducing the incidence of caries (p = 0.015). CONCLUSION: Parental oral hygiene preventive instruction is currently ineffective. Based on our results, dental screening should be started before the age of 1 year, that would also provide an opportunity of effective, regular dental prevention counseling. There is a need for the integration of the basics of early childhood caries in the continuous professional training of district nurses and pediatricians. Orv Hetil. 2021; 162(22): 861-869.

Course induced dexterity development and cerebellar grey matter growth of dentistry students: a randomised trial.

This study primarily focuses on the assessment of dentistry students' improvement of manual skills resulting from their participation in courses. We aimed to prove that systematic manual skills development significantly improves dexterity. We hypothesized that the dexterity training regimen improves manual dexterity demonstrated by the HAM-Man (Hamburg Assessment Test for Medicine-Manual Dexterity) test scores and CGM (cerebellar grey matter) growth. Thirty volunteers were randomly divided into two equal groups (study and control). Firstly, volunteers were examined by the HAM-Man test and baseline MRI scans. Afterwards, a manual skills development course was launched for the "study group". Secondly, all the manual skills of the students were evaluated longitudinally, by the HAM-Man test. Simultaneously, the follow-up MRI scans were taken to observe morphologic changes in the cerebellum. The Wilcoxon signed-rank test and Student Paired t-test were used for statistical analyses. Value p < 0.05 was considered significant. After the training, significant growth of CGM as well as improvement on manual skill assessment tests, were found in the study group. Training courses are suitable for preparing students with low levels of dexterity for performing demanding tasks. The improvement is demonstrable by a wire bending test and by bilateral CGM enlargement as well.

[Objective measurement of manual dexterity of Parkinson patients operated with DBS]. / DBS-mûtéttel kezelt Parkinson-kóros betegek kézügyesség-javulásának objektív mérése.

The evaluation of hand dexterity is an important marker for the success of DBS (deep brain stimulation) operation in patients with Parkinson's disease. In this study we applied a simple, semiquantitative optical dental plaque staining technique for the evaluation of the hand dexterity. Ten patient with Parkinson's disease were involved in the study. After dental students aided tooth brushing, bacterial dental deposits (plaque) were stained then photographed, and quantified under standard conditions before and after DBS surgery. Our results showed a significant decrease in dental plaque deposits after DBS operation. This simple technique seems to be a routinely applicable marker for the evaluation of the hand dexterity. Our future plans is repeating the previous experiement on a higher number of cases.

Localized Amyloidosis of the Upper Aerodigestive Tract: Complex Analysis of the Cellular Infiltrate and the Amyloid Mass.

OBJECTIVES: The aim of this study was to analyse the composition of amyloid mass and the plasmacytic infiltrate of localized amyloidosis of the upper aerodigestive tract. METHODS: Biopsy materials were studied by light microscopy, immunohistochemistry (IHC), and mRNA in situ hybridization (mRNA-ISH). The amyloid mass was also analysed with high-performance liquid chromatography mass spectrometry- (HPLC-MS-) based proteomics. RESULTS: Nodular and diffuse forms of amyloid deposition were detected. IHC analysis revealed λ-light chain (LC) in two cases, κ-LC in one case. The remaining two were positive with both. Proteins, well known from other amyloidoses like amyloid A (AA), prealbumin/transthyretin (PA), apolipoprotein A-I (ApoAI), and amyloid P component (APC), and also keratin were found with variable intensities in the cases. HPLC-MS revealed dozens of proteins with both LCs in all the lesions but sometimes with surprisingly small intensities. mRNA-ISH analysis revealed identical λ and κ dominance and only one normal κ/λ cell ratio. CONCLUSION: Cellular infiltrate and protein components in the amyloid showed congruent results in all but one case. The only exception with normal cell ratio and λ-dominant amyloid could be originated from the different protein-secreting activity of plasma cell clones. HPLC-MS analysis explored both LCs in all the amyloid in variable amount, but other proteins with much higher intensities like keratins, apolipoprotein A-IV (ApoAIV), were also detected. Proteins like AA, PA, ApoAI, and APC, previously known about amyloid-forming capability, also appeared. This indicates that localized amyloid in the upper aerodigestive tract is not a homogenous immunoglobulin mass but a mixture of proteins. The sometimes very low light chain intensities might also suggest that not all the localized amyloidosis cases of the upper aerodigestive tract are of convincingly AL type, and the analysis of the cellular infiltrate might indicate that not all are monoclonal.

Image analysis of fibrosis in labial salivary glands of patients with systemic autoimmune diseases. Close correlation of lobular fibrosis to seropositive rheumatoid arthritis and increased anti-CCP and RF titres in the serum.

Lobular fibrosis in labial salivary glands of patients with systemic autoimmune disease is a rarely examined and rather neglected histological change. Its significance and disease association is poorly understood. Our aim was to explore the clinical correlations of fibrosis in labial salivary gland samples using objective methods and laboratory parameters. Labial salivary gland samples from more than 300 patients over a 3-year period were selected from the archives of the pathology department, histologically examined, digitised, image analysed and statistically evaluated to identify the presence and intensity of lobular fibrosis, its relation to age, clinical diagnoses of systemic autoimmune disease and the presence of rheumatoid factor (RF), anti-cyclic citrullinated peptide (CCP), antinuclear antibodies (ANAs), and anti-dsDNA serum markers. Significant correlation was found between lobular fibrosis and the presence of autoimmune disease (p = 0.023), mainly seropositive rheumatoid arthritis (p < 0.001). Also significant association was found between the fibrosis and the presence of serum anti-CCP (p < 0.001) and IgA/IgG/IgM-RF (p < 0.001, p < 0.001 and p = 0.008, respectively). Significant association was explored between the anti-dsDNA positivity and the negative histology groups (p = 0.033) and between the ANA positivity and the inflammation only group (p = 0.021). The results suggest that lobular fibrosis tends to associate to certain systemic autoimmune diseases, mainly seropositive rheumatoid arthritis, and seems to be rare in labial salivary gland biopsies of autoimmune diseases characterised by presence of anti-dsDNA. The close correlation of ANA positivity and the inflammation only histology was not surprising, since the majority of patients (62%) have Sjögren's syndrome, known for its inflammatory infiltrate. These findings emphasise that evaluation of lobular fibrosis and inflammation in histological samples of labial salivary gland biopsies are equally important.

Adipose tissue infiltration in minor salivary glands of patients with Sjögren's syndrome: Lack of significant correlation with the disease. An image analysis of 174 cases.

Fatty infiltration in minor salivary gland biopsies and its correlation to systemic autoimmune diseases are controversial in the literature. Presence and extent of fatty infiltration in minor salivary glands of 107 Sjögren's syndrome patients and 67 age-matched sicca controls were compared with statistical analyses. No significant difference was found regarding the presence or the extent of fatty infiltration between the two groups. Fatty infiltration seems to be unrelated to Sjögren's syndrome thus its examination in salivary gland biopsy samples cannot improve the diagnostic accuracy of the disease.

Image analysis of fatty infiltration in labial salivary gland biopsies: extent and its correlation to age, obesity and diabetes.

BACKGROUND: Fatty infiltration of minor salivary gland parenchyma is relatively frequent, but not extensively examined histopathological phenomenon in biopsy samples. Its extent and relation to several suspected background diseases are not well understood. METHODS: In this study, we examined the presence and extent of fatty infiltration on digitally scanned versions of the periodic acid/Schiff-stained minor salivary gland slides of 275 patients. As a result of the image analysis, fatty infiltration was expressed in per cent of the whole selected area. The presence and extent of this change were compared to age, diabetes mellitus and body mass index in various statistical analyses. RESULTS: Significantly higher age and body mass index values were found in the fatty infiltration positive than in the negative group. We also found that not only the number of fatty infiltration positive cases was increased significantly in the gradually worsened body mass index groups, but the extent of fatty infiltration also increased as the obesity worsened. Age also showed significant correlation with the extent of fatty infiltration. DISCUSSION: All of these findings support that the age (which seemed the only independent variable) shows strong correlation with the presence of the fatty infiltration but obesity may also play important role in the development and the extent of this change. Because of its frequency in elderly, at least partly, the fatty infiltration might be responsible for the xerostomia. We also think that presence of fatty infiltration should be mentioned in the histopathological report of salivary gland biopsies.