47 research outputs found
A dentin caries in vitro modellezése és a de- és remineralizációját befolyásoló tényezők vizsgálata
Az Ă©p fogakon törtĂ©nĹ‘ demineralizálĂł oldatot áramoltatatása után a mintákat három csoportba osztottuk. Az A csoportot fluorid mentes remineralizálĂł oldatba helyeztĂĽk, a B csoportot 2ppm fluoridot tartalmazĂł remineralizálĂł oldattal, a C csoportot 10 ppm fluoridot tartalmazĂł oldattal kezeltĂĽk. A remineralizáciĂł folyamata alatt a pulpakamrát művi dentin folyadĂ©kkal áramoltattuk át. A kezeletlen cavitasok hindraulikus konduktancia (Lp) átlagĂ©rtĂ©ke 7,52?0,62x10-8 m/skPa volt. A művi carieses lĂ©ziĂłk kĂ©pzĹ‘dĂ©se az Lp Ă©rtĂ©kek 44,9?16,75%-os csökkenĂ©sĂ©t eredmĂ©nyezte. A remineralizáciĂł az Lp Ă©rtĂ©k további csökkenĂ©sĂ©t okozta: 14,1?8,7 %, 18, 7?9,2 % Ă©s 41,5?16,6% volt az A, B Ă©s C csoportokban. A C csoport Ă©s a többi csoport között a kĂĽlönbsĂ©g statisztikailag szignifikáns volt (p<0,05). A művi carieses lĂ©ziĂł Lp Ă©rtĂ©ke csak a magas fluorid koncentráciĂł jelenlĂ©tĂ©ben változott. SEM Ă©s röntgen spektroszkĂłpiai elemzĂ©s: Ca, P, F elemek denzitását a cavitas alján a pulpakamráig terjedĹ‘en 3 ponton mĂ©rtĂĽk. A vonalanalĂzis az A mintában nagyon változĂł remineralizáciĂłs terĂĽleteket mutatott (hipermineralizált foltok, Ă©s hipomineralizált terĂĽletek) A fluoridot alacsony koncentráciĂłban tartalmazĂł csoportban homogĂ©n felszĂni remineralizáciĂłs rĂ©teget figyeltĂĽnk meg. A fluoridot nagy koncentráciĂłban tartalmazĂł csoport vastagabb remineralizáciĂłs rĂ©teget mutatott. UtĂłbbi esetben a fluorid szignifikánsan fokozott jelenlĂ©tĂ©t figyeltĂĽk meg (p<0,05). | Artificial carious lesions were formed, then samples were divided into 3 groups: A was immersed into remineralizing solution without fluoride, B was immersed into a 2ppm F containing remineralizing solution, C into 10ppm F containing solution.During the remineralization process, the pulp camber was perfused with an artificial dentinal fluid. Hydraulic conductance(Lp) values of cavities were determined before and after artificial carious lesion formation as well as after remineralizing process.The mean Lp(?SD) of untreated cavities were 7.52?0.62 x 10-8 m/s kPa.Formation of carious like lesions resulted in 44.9?16.7 % reduction of Lp(p<0.05). Remineralization resulted in further reduction of Lp:14.1?8.7%, 18.7?9.2% and 41.5%?6.6% in groups A,B,C respectively. Between the C group and the other groups there were statistically significant difference (p<0,05). Energy dispersive x-ray analysis: Ca,P,F density was detected along the remaining dentine at 3 levels. Line analysis showed different areas of remineralization in case of Agroup (hypermineralized and hypomineralized areas). The low concentration of F resulted a homogenous surface remineralization layer. High concentration of fluoride resulted in a deeper remineralization surface layer at the base of arteficial carious lesion. In addition in this group the remineralized surface layer was associated with an increased fluoride presence, which was statistically significant
Experiences with amine fluoride containing products in the management of dental hard tissue lesions focusing on Hungarian studies: A review.
Fluorides play a significant role in the promotion of oral health, fostering remineralization, inhibiting demineralization processes in the enamel, and having antibacterial activity. The effects of fluorides are mostly exerted by their topical effect. The beneficial effect of amine fluorides (AmF) on caries and dental plaque reduction has been known for a long time. The caries reducing and plaque-inhibiting effect of stannous fluoride (SnF2) was also reported. However, the combination of amine fluoride/stannous fluoride has shown a much better inhibition of plaque accumulation then these products alone. There have been several clinical studies with AmF or AmF/ SnF2 products, using toothpaste, gel, combination of toothpaste and gel/fluid, toothpaste and mouth rinse. The aim of this article is to review the clinical experiences with these products based on Hungarian studies. The first Hungarian studies with AmF containing gel were published by Szoke and Kozma (1989) and Denes and Gabris (1991). Madlena et al. (2002) performed a study with an AmF-containing toothpaste and gel in high risk groups of adolescents. The first Hungarian study with AmF/SnF2 products was published by Banoczy et al. (1989). Based on the favourable results of these products used in combination for 12 weeks, other studies (Madlena et al. 2004, 2012) assessed the effects of toothpastes and mouth rinse containing AmF/SnF2 on plaque accumulation, within a shorter period of time, in young adults and orthodontic patients. CONCLUSION: Regular use of different oral hygienic products containing an AmF and AmF/SnF2 combination contributes to the prevention of plaque accumulation and consequently to the prevention of dental diseases
A nyálmirigy hypofunctio aetiopathológiai jelentősége az orális és szisztémás megbetegedésekben különös tekintettel a Sjögren szindrómára = Etiopathological role of salivary gland hypofunction in oral and systemic diseases with special aspect to Sjögren`s syndrome
Hazai adatokat nyertĂĽnk a száj-Ă©s szemszáradás, Ă©s az azokkal kapcsolatos szubjektĂv panaszok gyakoriságárĂłl. Ă–sszesen 600 szemĂ©ly adatait rögzĂtettĂĽk, ezek 34%-a panaszolt szubjektĂv szájszárazságot, Ă©s 7,5%-ban nyilatkoztak egyĂ©b siccas tĂĽnetekrĹ‘l. A kĂ©rdezettek 21%-a szenvedett szubjektĂv xerophtalmiaban. A nyugalmi kevert nyál szekrĂ©ciĂłs rátája szignifikánsan magasabb volt fĂ©rfiakban, mint nĹ‘kben, minden korcsoportban. A vizsgáltak 3.8 %-a szenvedett hyposalivatioban, ezek DMFT Ă©rtĂ©ke Ă©s szájhygiĂ©niája szignifikánsan rosszabb volt, mint a normosalivatios csoportban. A mĂ©ly parodontalis tasakok száma szemĂ©lyenkĂ©nt nem mutatott szignifikáns eltĂ©rĂ©st az elĹ‘bbi csoportokban. A nyugalmi, teljes nyálszekrĂ©ciĂł csökkenĂ©se volt mĂ©rhetĹ‘ a Sjögren szindrĂłmás betegek vonatkozásában, mĂg a palatinalis szekrĂ©ciĂł nem kĂĽlönbözött a kĂ©t csoportban. MegállapĂthatjuk, hogy a vizsgált neuropeptidek szerepet játszhatnak a Sjögren szindrĂłmában leĂrt szenzoros neuropathia kialakulásában Az IIM betegek esetĂ©ben a jellemzĹ‘ szájnyálkahártya elváltozás a teleangiectasia volt. Kisnyálmirigyek vizsgálatakor PM/DM betegeknĂ©l legjellemzĹ‘bben az ultrastructuralis vizsgálatok a basal membran megvastagodását, Ă©s lamellaris szerkezetĂ©t mutatták. A szĂłja táplálással lĂ©trehozott parotis hypertrophia modell vizsgálata az apoptosis irányában informáciĂłkat nyĂşjthat a humán parotisok hypertrophiájának megismerĂ©sĂ©hez. | The aim of our study was to gain representative Hungarian data on prevalence of oral and ocular dryness. Altogether 600 persons were assessed, 34 % of them complained about subjective xerostomia, and 7.5% on other sicca symptomps. 21 % of them complained on subjective xerophtalmia. The resting whole salivary secretion rate was significantly higher in men than in women at every age groups. Regarding the dental status, DMFT value, and oral hygienic indices were significantly higher in the hyposalivation group. The frequency of the deep periodontal pockets didn't differ between the two groups. Although the resting, whole salivary secretion was lower in the Sjögren's group, the palatal secretion didn't differ between the two groups. Some examined neuropeptides can contribute to the pathogenesis of Sjögren's sy. in minor salivary glands in sensory neuropathy. In case of IIM patients the EM showed in minor salivary glands the thickening of capillary basal membrane, and lamellar structure of those. In soya feeding hypertrophy model we can examine the human parotid hypertrophy in the future
Comparison of the learning of two notations: A pilot study.
INTRODUCTION: MICAP is a new notation in which the teeth are indicated by letters (I-incisor, C-canine, P-premolar, M-molar) and numbers [1,2,3] which are written superscript and subscript on the relevant letters. FDI tooth notation is a two digit system where one digit shows quadrant and the second one shows the tooth of the quadrant. This study aimed to compare the short term retention of knowledge of two notation systems (FDI two digit system and MICAP notation) by lecture method. METHODS: Undergraduate students [N=80] of three schools participated in a cross-over study. Two theory-driven classroom based lectures on MICAP notation and FDI notation were delivered separately. Data were collected using eight randomly selected permanent teeth to be written in MICAP format and FDI format at pretest (before the lecture), post-test I (immediately after lecture) and post-test II (one week after the lecture). Analysis was done by SPSS version 20.0 using repeated measures ANCOVA and independent t-test. RESULTS: The results of pre-test and post-test I were similar for FDI education. Similar results were found between post-test I and post-test II for MICAP and FDI notations. CONCLUSION: The study findings indicated that the two notations (FDI and MICAP) were equally mind cognitive. However, the sample size used in this study may not reflect the global scenario. Therefore, we suggest more studies to be performed for prospective adaptation of MICAP in dental curriculum