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Wyświetlanie 1-4 z 4
Tytuł:
Extraction of asymptomatic impacted third molars – a review
Autorzy:
Błochowiak, Katarzyna
Aleksandrzak, Paweł
Kropielnicki, Kacper
Handschuh, Jakub
Pawlik, Patrycja
Stanek, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1597330.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
impaction
surger
third molars
wisdom teeth
Opis:
Introduction. The prophylactic extraction of asymptomatic wisdom teeth is defined as the surgical removal of wisdom teeth in the absence of local disease. Early extraction of asymptomatic third molars is considered beneficial to patients to prevent the risk of future pathology, and to minimize operative and postoperative risks. The second concept is watchful monitoring of asymptomatic wisdom teeth, adhering to specific indicators for their extraction. Aim. The aim of this paper is to present and evaluate the indications and effects of prophylactic extraction of asymptomatic impacted third molars in adolescents and adults, compared with their retention and watchful monitoring. Material and methods. This study is based on analysis of literature. Conclusion. There exist clear indications for the extraction of third molars which are associated with pathology. Prophylactic extractions of asymptomatic impacted third molars should be performed only before 20 years of age. In older age, asymptomatic third molars should be retained and watchfully monitored, and removed only in cases of evident clinical or radiological symptoms
Źródło:
European Journal of Clinical and Experimental Medicine; 2019, 1; 71-78
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two medium-sized deinotheres (Proboscidea: Mammalia) from the Miocene rocks of the Eastern Carpathians Foreland (Romania)
Autorzy:
Ţibuleac, P.
Powiązania:
https://bibliotekanauki.pl/articles/2060448.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hemimandible
molars
tibia
Drăgeşti
Deleni
Bessarabian
Opis:
The paper summarizes the medium-sized deinothere records from Romania, improving the palaeontological data of two less-known specimens from the Eastern Carpathians Foreland. The area is famous primarily by the large deinothere of Găicena and Mânzaţi assigned to the “Deinotherium gigantissimum”. Later, several fossils of Deinotherium were documented, but they remained generally unknown, and the morphological and biometrical data were not engaged in the further deinothere comparisons. The most important specimen is a fragmentary right hemimandible with well-fossili zed m1-m2, housed in the “Ion Borcea” Natural History Museum of Bacău. The p3-p4 and m3 preserved only the roots; even there are not obvious reworking signs. Furthermore, a tibia sin. fragment were firstly added. The fossil remains were unearthed from the Late Bessarabian rocks (MN 9) near Drăgeşti (Bacău County). The second specimen represents an isolated M2 sin of Deinotherium giganteum stored at the Museum of Paleontology “Alexandru Ioan Cuza” University of laşi. It was collected from a microconglomerate bed (Early Bessarabian, ?MN 7-8-Mn 9) cropping out in the Pietrăria Hill Quarry (Deleni, laşi County). The age of fossil-bearing layers was accurately documented by several mollusc assemblages.
Źródło:
Geological Quarterly; 2018, 62, 3; 669--684
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carnassiform notches improve the functional efficiency of bat molar shearing crests
Autorzy:
Czaplewski, Nicholas J.
Baker, Charles G.
Powiązania:
https://bibliotekanauki.pl/articles/2216220.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Chiroptera
dental morphology
functional morphology
functional design
molars
talonid cests
shearing blades
bio-engineering
Opis:
We surveyed molar surface morphology of bats of 281 extant and extinct species in 5 archaic and 19 extant families using scanning microscopy. We note the occurrence of structural features on talonid crests, the cristid obliqua, postcristid, and entocristid, and their absence in upper molars, even of the same species having them on lowers. We term the structures “carnassiform notches” (CN) for their resemblance to similar features on the carnassial teeth of carnivorans. A CN consists of a small cleft in the edge of a talonid shearing crest accompanied by an adjacent “accessory trough” on the basinward side of the notch. The CN occur in bats with tribosphenic molar morphology and insectivorous or insectivorous–omnivorous dietary habits. Of 19 extant families examined, eight include members that possess lower molars with a CN in at least the cristid obliqua: Megadermatidae, Nycteridae, Mystacinidae, Furipteridae, Thyropteridae, Phyllostomidae, Natalidae, and Vespertilionidae (Murininae and Kerivoulinae only). An extinct genus of Hipposideridae, Vaylatsia, shows CN although extant hipposiderids do not. In extinct families for which lower molar fossils are available, notches were not recognized on the talonids, indicating the condition is not plesiomorphic for bats and probably evolved convergently in different lineages. Where present, the CN or troughs are morphologically consistent within a family, and might serve in some cases as characters supporting phylogenetic analyses and clade diagnoses. CN and accessory troughs probably increase the functional efficiency at sectioning chitin by increasing the effective length of a crest while maintaining the same cusp-to-cusp distance and precise occlusal relationships, and by improving the food-capture area of the shearing blade during occlusion. The accessory troughs provide an immediately adjacent fragment-clearance area. The increased sophistication of this food-processing system might be particularly important in species that must quickly acquire, chew, and swallow their food and resume echolocating in flight. The common ancestor of bats probably did not have CN in its molars, and the presence of CN does not signal carnivory in bats.
Źródło:
Acta Palaeontologica Polonica; 2022, 67, 1; 257-282
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The prevention of dental caries and dental health of 12-year-old children in Żywiec District in Silesian Voivodeship – a Polish experience
Profilaktyka próchnicy a stan uzębienia dzieci 12-letnich w powiecie żywieckim w województwie śląskim – doświadczenia Polskie
Autorzy:
Kalińska, Urszula
Hartman-Petrycka, Magdalena
Błońska-Fajfrowska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1035218.pdf
Data publikacji:
2019
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
12-year-old children
health programme
frequency of caries
dmft
sealing of molars
dzieci 12-letnie
program zdrowotny
frekwencja próchnicy
lakowanie zębów trzonowych
Opis:
INTRODUCTION: To counteract tooth decay in the Żywiec area, the local authorities implemented a health programme aimed at children from 4 to 15 years of age. The programme included educational and preventive actions (oral examinations and the sealing of I and II permanent molars). The aim of this study was to measure the effectiveness of the health programme. MATERIAL AND METHODS: The 12-year-olds who participated in the study were from: the town of Żywiec and covered by the Programme (P group; n = 441); the town of Żywiec, but not covered by the Programme (CT group; n = 131) and non-participants in the Programme from the countryside around Żywiec (CR group; n = 135). The effectiveness of the programme was measured by analysing a survey evaluating the children’s awareness of oral health and an examination of their teeth, in particular, the first and second permanent molars. RESULTS: The children from Group P were more knowledgeable (p < 0.001), had a lower frequency of decay in their permanent teeth (p < 0.001), lower than average values for DMFT (1.3; p < 0.001) and DMFS (1.4; p < 0.001), lower rates of SiC (3.2; p < 0.001) and higher rates of preventive sealant on I (p < 0.001) and II (p < 0.001) molars, than in both control groups. For comparison, Group CT: DMFT = 4.5, DMFS = 5.2, SiC = 7.2; and group CR: DMFT = 3.5, DMFS = 4.3, SiC = 7.0. The treatment index in Group CR (0.44) was much lower than in Groups P (0.80) and CT (0.76). CONCLUSIONS: Implementing a preventative programme of this nature could bring benefits not only in Poland but also in countries where the state of oral health is very low.
WSTĘP: Aby obniżyć częstość występowania próchnicy zębów w Żywcu, władze samorządowe wdrożyły program dedykowany dzieciom w wieku 4–15 lat. Program obejmował działania edukacyjne i profilaktyczne (badanie jamy ustnej oraz lakowanie I i II stałych zębów trzonowych). Celem pracy było zmierzenie skuteczności programu zdrowotnego. MATERIAŁ I METODY: W badaniu wzięli udział 12-letni uczniowie: z miasta Żywiec objęci programem profilaktycznym (grupa P; n = 441); z miasta Żywiec nieobjęci takim programem (grupa CT; n = 131) oraz ze wsi w powiecie żywieckim, również nieuczestniczący w programie (grupa CR; n = 135). Skuteczność programu była oceniana na podstawie wiedzy dzieci na temat zdrowia jamy ustnej oraz oceny stanu uzębienia, w szczególności pierwszych i drugich zębów trzonowych stałych. WYNIKI: Dzieci z grupy P miały większą wiedzę (p < 0,001), obserwowano u nich niższą częstotliwość próchnicy zębów stałych (p < 0,001), niższe średnie wartości DMFT (1,3; p < 0,001) i DMFS (1,4; p < 0,001), niższe wartości SiC (3,2; p < 0,001) oraz wyższe wskaźniki lakowania I (p < 0,001) i II (p < 0,001) zębów trzonowych niż w obu grupach kontrolnych. Dla porównania w grupie CT: DMFT = 4,5; DMFS = 5,2; SiC = 7,2, w grupie CR: DMFT = 3,5; DMFS = 4,3; SiC = 7,0. Wskaźnik leczenia zębów w grupie CR (0,44) był znacznie niższy niż w grupach P (0,80) i CT (0,76). WNIOSKI: Realizacja programu profilaktycznego o takim charakterze mogłaby przynieść korzyści nie tylko w Polsce, lecz także w krajach, w których stan zdrowia jamy ustnej jest bardzo niekorzystny.
Źródło:
Annales Academiae Medicae Silesiensis; 2019, 73; 163-173
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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