Temat: removable denture - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Hygiene, ways of storage and lifetime of removable dentures
Autorzy:: Krawczyk, J.
Bozyk, A.
Kiworkowa-Raczkowska, E.
Berger, M.
Bakalczuk, M.
Szkutnik, J.
Pietryka-Michalowska, E.
Wdowiak, A.
Sapula, M.
Tematy:: human hygiene
hygiene
storage
removable denture
denture; Pokaż więcej
Wydawca:: Instytut Medycyny Wsi
Powiązania:: https://bibliotekanauki.pl/articles/3601.pdf Link otwiera się w nowym oknie
Opis:: Hygiene plays an important role in patients who use removable dentures. The proper way of cleaning and storage also provides better health of oral cavity tissues as well as for the remaining teeth. The research involved 162 patients, 133 women and 29 men, aged 60–90, with different levels of education, the majority with secondary education. All patients were using removable dentures. 85.8% declared earlier use of dentures, and a half of the patients had used dentures for no more than 7.5 years. A considerable percentage (33.95%) used dentures for the whole day. Storing in a container with fluid was used by 25.93% of the respondents. Over 70% used toothpaste to clean their dentures and about 14% immersed them in special preparations, e.g. CoregaTabs, while over 8% used soap. Among patients who cleaned their dentures, the majority cleaned them once a week (75%) and the minority – twice a week (25%). The greatest percentage of patients cleaned their dentures with a toothbrush and toothpaste, which is not recommended due to occurring microabrasions. It is recommended that patients should be educated regarding prosthesis hygiene and regular follow-ups.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Assessment of oral hygiene in patients using fixed and removable dentures treated at the University Dental Clinic in Krakow
Autorzy:: Ryniewicz, Joanna
Gronkiewicz, Krzysztof
Pihut, Małgorzata
Orczykowska, Magdalena
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 3.

Tytuł:: Chewing efficiency and occlusal forces in PMMA, acetal and polyamide removable partial denture wearers
Autorzy:: Macura-Karbownik, A.
Chladek, G.
Żmudzki, J.
Kasperski, J.
Tematy:: materiał protetyczny
wyjmowana proteza częściowa
materiały termoplastyczne
denture base material
removable partial denture
chewing efficiency
occlusal force
thermoplastic materials; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/306359.pdf Link otwiera się w nowym oknie
Opis:: Purpose: Thermoplastic materials, such as acetal (AC) and polyamide (PA), constitute an alternative to polymethyl methacrylate (PMMA) based resins as the materials for removable partial dentures. However, none of the previous studies compared chewing efficiency and occlusal forces in the wearers of dentures made of various materials. Therefore, the aim of this study was to determine and compare the chewing efficiency and occlusal forces in PMMA, PA and AC RPDs’ wearers. The hypothesis was that the type of denture base material shows a significant effect on chewing efficiency (expressed as a degree of food fragmentation) and occlusal force. Methods: The experiment included the group of 30 patients using removable partial dentures. The dentures made of PMMA, acetal and polyamide were tested in each patient. Each denture was worn for 90 days, with a random sequence of the denture manufacturing and insertion. After 7, 30 and 90 days of each denture wear, chewing efficiency coefficient was determined with the aid of a sieving method, and occlusal force was measured with a dynamometer. Results: The use of dentures made of PMMA or acetal was reflected by a marked increase in chewing efficiency and occlusal force. None of these parameters changed significantly with the time of denture wear. Moreover, no significant correlation was found between chewing efficiency and occlusal forces. Conclusions: Denture base material exerts significant effects on the degree of food fragmentation and the level of occlusal forces. The use of dentures and clasps made of materials with lower modulus of elasticity is associated with lower chewing efficiency and lower occlusal forces.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The analysis of the effect of wrought wire clasps on the conditions of abutment teeth
Autorzy:: Kasperski, J
Chladek, G.
Płonka, Ł.
Tematy:: wrought wire clasp (WWC)
wear
removable partial denture
spring constant
zużycie zębów
sprężyna wielokrotna
wyjmowana proteza częściowa; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/307034.pdf Link otwiera się w nowym oknie
Opis:: Laboratory evaluation of spring constants (k) of wrought wire clasps (WWC) separated from removable partial denture (RPD) and the results of tibological tests which represent the dependence of enamel wear with normal force have been presented in the paper. The results of laboratory examinations have been combined with the results of clinical assessment of the level of abutment teeth wear. On the basis of the examinations performed it has been revealed that the following factors have the greatest impact on tribological wear of abutment teeth: the time of using RPD and the normal force exerted by WWC on abutment tooth. Normal force depends to a great extent on the place of contact of WWC with the tooth. It has also been found that abutment teeth featuring higher scale of wear are more loosened. The diameter of wire used for making WWC, total length of the arm and k determined for the total length of the arm did not have any impact upon the scale of wear of abutment teeth.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analysis of the electrolytically polished skeletal dentures surfaces using various nano- and microscopic technologies
Autorzy:: Dąbrowa, Tomasz
Majstrzyk, Wojciech
Tamulewicz, Magdalena
Piasecki, Tomasz
Kunicki, Piotr
Więckiewicz, Włodzimierz
Gotszalk, Teodor
Tematy:: chropowatość powierzchni
skaningowa mikroskopia elektronowa
proteza ruchoma
mikroskopia skaningowa
surface roughness
scanning electron microscopy
removable partial denture
scanning probe microscopy
optical profilometry; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/306706.pdf Link otwiera się w nowym oknie
Opis:: The surface roughness of the dental restorations is significant to the denture plaque adhesion. Methods: In this work, we present the complex analysis of the electropolished CoCrW alloy remanium® star (Dentaurum, Germany) samples with laserengraved fiducial marks performed using complementary set of micro- and nanoscopic techniques: optical profilometry (OP), atomic force microscopy (AFM), scanning electron microscopy (SEM) and focused ion beam (FIB) milling. Results: Both mean and RMS roughness of the samples were reduced by electopolishing process, however, the results obtained using OP and AFM exhibited some discrepancies. This was caused by the relatively high local protruding defects developed on the processed surface. The cross-sections of the protrusions were made to analyze the cause of their formation as the EDS elemental content maps revealed that their composition was uniform. We also analyzed the local roughness in the smaller areas free from the defects. Conclusions: In that case, both OP and AFM techniques delivered the same results. Analysis of results showed that various methods used for the surface roughness evaluation have to be used simultaneously to obtain complete and true analysis of the technological CoCrW samples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Assessment of the impact of removable dentures care agents on the mechanical properties of selected acrylic resins : based on pilot studies
Ocena wpływu środków do higieny protez ruchomych na właściwości mechaniczne wybranych tworzyw akrylowych : na podstawie badań pilotażowych
Autorzy:: Gala, Andrzej
Krupińska-Franczak, Karolina
Wiśniewska, Grażyna
Opis:: Introduction. Removable acrylic dentures are the most commonly used prosthetic restorations. Their use involves daily hygienic care with cleaning agents and disinfectants. There are many uncertainties regarding the effect of disinfectants on the mechanical properties of acrylics. Aim of the study. To assess in vitro whether acrylic denture disinfectants have an effect on the hardness and tensile strength of acrylic materials. Materials and methods. The study was conducted with two acrylic materials of which removable dentures are commonly made, i.e. SR Triplex Hot from Ivoclar Vivadent and Rapid Simplifield from Vertex. The following preparations used for the disinfection of dentures were assessed: 2% chlorhexidine gluconate solution, 2% sodium hypochlorite solution, Corega Tabs cleansing tablets and Fittydent cleansing tablets. Twenty-four samples were made from each material. The samples were divided into three groups. In the first group, samples were stored in distilled water at 37°C and dipped in one of the four disinfectants for 15 minutes once a day. In the second group, samples were stored in distilled water and they were not disinfected. In the third group (control group), samples were tested right after they were made. After 2 and 4 weeks, samples in the first and second groups were tested for hardness and tensile strength. Tensile strength was tested using a universal testing machine, and hardness was tested using a hardness gauge (Vickers method). The results obtained were analysed statistically. Findings. Chlorhexidine was the solution that reduced the hardness and strength of acrylic the most. The smallest drop in the strength properties of acrylic was observed for Fittydent and Corega Tabs cleansing tablets and sodium hypochlorite solution. Conclusions. All the acrylic disinfectants used reduced the mechanical properties of acrylic.
Wprowadzenie. Najczęściej stosowanymi uzupełnieniami protetycznymi są ruchome protezy akrylowe. Użytkowanie takich uzupełnień wiąże się z koniecznością codziennej ich higienizacji za pomocą środków czyszczących i dezynfekujących. Istnieje wiele niejasności dotyczących wpływu środków dezynfekujących na właściwości mechaniczne akrylu. Cel pracy. Celem pracy była ocena „in vitro”, czy środki stosowane do dezynfekcji protez akrylowych mają wpływ na twardość oraz wytrzymałość na rozciąganie akrylu. Materiały i metody. Do badań wybrano dwa materiały akrylowe, z których powszechnie wykonywane są protezy ruchome, tzn. akryl SR Triplex Hot firmy Ivoclar Vivadent oraz Rapid Simplifield firmy Vertex i preparaty stosowane do dezynfekcji protez: 2% roztwór glukonianu chlorheksydyny, 2% roztwór podchlorynu sodu, tabletki czyszczące Corega Tabs oraz tabletki czyszczące Fittydent. Z każdego materiału wykonano po 24 próbki. Próbki podzielono na 3 grupy. W grupie pierwszej próbki przechowywano w wodzie destylowanej o temperaturze 37°C i raz dziennie zanurzano je w jednym z czterech środków dezynfekujących na 15minut. W grupie drugiej próbki przechowywano w wodzie destylowanej i nie poddawano ich dezynfekcji. W grupie trzeciej (kontrolnej) próbki przebadano tuż po ich wykonaniu. Po upływie 2 i 4 tygodni w grupie pierwszej i drugiej zbadano twardość oraz wytrzymałość na rozciąganie. Wytrzymałość na rozciąganie badano z zastosowaniem maszyny wytrzymałościowej, a twardość za pomocą twardościomierza (według metody Vickersa). Uzyskane wyniki poddano analizie statystycznej. Wyniki. Roztworem, który w największym stopniu wpływał na obniżenie twardości i wytrzymałości akrylu była chlorheksydyna. Najmniejszy spadek właściwości wytrzymałościowych akrylu odnotowano w przypadku tabletek czyszczących Fittydent, Corega Tabs i roztworu podchlorynu sodu. Wnioski. Wszystkie środki zastosowane do dezynfekcji akrylu powodowały obniżenie jego właściwości mechanicznych.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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