Postovana,
Vi ste ocigledno malo zakasnili sa update-ovanjem svojih saznanja. Procitajte ovo, molim Vas, i obratite paznju na poslednju recenicu:
Dental caries and its relationship to bacterial infection, hypoplasia, diet, and oral hygiene in 6- to 36-month-old children.
Milgrom P, Riedy CA, Weinstein P, Tanner AC, Manibusan L, Bruss J.
Department of Dental Public Health Sciences, University of Washington, Seattle 98195, USA. [email protected]
Caufield et al. (1) have suggested that the acquisition of mutans streptococci in young children most likely takes place during a "window of infectivity" from 19 to 31 months of age. OBJECTIVES AND METHODS: This study determined the prevalence of dental caries and bacterial infection in a randomly selected sample of 199 children 6 to 36 months old from the island of Saipan in the Common-wealth of the Northern Mariana Islands, USA. The relationships between caries and Streptococcus mutans infection, hypoplasia, diet and oral hygiene behavior were investigated. RESULTS AND CONCLUSIONS: The overall estimated prevalence of caries was high: 46.8% of the children had white spot lesions and 39.1% had enamel cavitation. Colonization was seen in very young children; S. mutans was detected in 25% of the predentate children. The results of multi-variable modeling support the hypothesis that bacterial infection, diet, and hypoplasia are important in the etiology of dental caries in this population. Adjusted for age and ethnicity, children with a high level of S. mutans detected were 5 times more likely to have dental caries than children with a lower level of S. mutans detected. Hypoplasia and a high cariogenicity score (diet) were also significant independent predictors. The odds of having any white spot lesions or enamel cavitation were 9.6 times greater for children with any hypoplasia, and 7.8 times greater for children with high cariogenicity scores relative to those with lower scores after adjusting for level of S. mutans, age and ethnicity. Sleeping with a bottle, maternal sharing of utensils, and high snacking frequency were not significant predictors of caries in this population.
izvor:
http://www.ncbi.nlm.nih.gov/entrez/quer ... t=Citation
Nije u potanju secer, nego DUZINA EKSPOZICIJE SECERU, i to ne samo seceru u minimalnim kolicinama koji cete koristiti kao zasladjivac, vec i laktozi iz mleka i svim ostalim ugljenim hidratima, kojima se hrane patogene BAKTERIJE.
Karijes NE IZAZIVA SECER, nego bakterija, Streptococcus mutans. Normalno hranjenje flasicom do 6. meseca NE IZAZIVA povecanje ekspozicije seceru. Ukljucivanje ostale hrane posle 6. meseca, uz koriscenje varalice NIJE OPASNIJE nego isto bez varalice - jer NIKO, ali NIKO u nasoj zemlji deci ne pere desni, niti se brine o higijeni prvih zuba. Sa varalicom ili bez nje, zasladjenom minimalno ili nikako, unos secera je isti i ekspozicija je ista - a higijena je odsutna - osim spontanog ispiranja obicnom vodom.
Slatka varalica prestaje da bude slatka posle samo dvadesetak sekundi - niko nije nenormalan da je stalno "kvasi" i zasladjuje. Ali, trik pomaze, i pritom, NE DAJE SE FLASICA, nema nepotrebnog hranjenja. (Niti dete sisa prst, sto je i bilo pitane koje je pokrenulo ovu diskusiju). Amilaze iz pljuvacke secer rastvaraju i stvara se kisela sredina, koja na zalost pogoduje bakterijama, ALI, uzmite pa merite pH deci koja ne koriste cuclu, videcete da je skoro isti! Sto je jos gore, pH vrednost izgleda da uopste i nije jedina koja je vazna, kao sto bi pojedine reklame za zvakace gume htele da nas ubede - ona je u baznim uslovima zapravo ista kod vecine ispitanika, bez obzira imali karijes ili ne, imali bakterije ili ne...:
The pH of dental plaque in its relation to early enamel caries and dental plaque flora in humans.
Lingstrom P, van Ruyven FO, van Houte J, Kent R.
Department of Cariology, Faculty of Odontology, Goteborg University, Sweden. [email protected]
Dental caries appears to result from the action of multiple, interrelated factors. A companion study dealt with the plaque-flora/caries relationship (van Ruyven et al., 2000). The plaque-pH/caries relationship is the subject of this study. Since both studies involve the same subjects, plaques, and tooth surfaces, data on the examined factors have also been integrated. In vivo plaque pH determinations (microelectrode) were done on buccal sound (s) and "white-spot" (ws) caries surfaces in a selected dentition area in a low-caries (no ws) and higher-caries subject group. The pH response to sugar was evaluated before and after a sugar rinse, a local sugar application, or sucking on a sugary lozenge. pH profiles with sugar rinsing and normal or limited salivary flow conditions, showed progressively decreasing plaque pH values at various time points in the order of: low-caries subjects (s sites), higher-caries subjects (s sites), higher-caries subjects (s + ws sites), and higher-caries subjects (ws sites). The minimum pH values showed the same trend. Analyses of all data indicated only a statistical difference for minimum values for s sites in low-caries subjects vs. ws sites in higher-caries subjects, and for s and ws sites in the latter. Local sugar application and sucking on a sugary lozenge induced smaller pH drops than sugar rinsing; such suboptimal sugar exposure caused a disappearance of the difference between the minimum pH values for s and ws sites observed with sugar rinsing in the higher-caries subjects. Initial plaque pH values were similar regardless of subject or tooth caries status. The values were also not correlated with the plaque levels of strongly iodophilic polysaccharide-storing bacteria.
izvor:
http://www.ncbi.nlm.nih.gov/entrez/quer ... t=Abstract
Postoje brojni kofaktori koji dovode do decjeg karijesa i nemojte se cuditi ako dete ima karijes cak i ako nikada nije videlo flasicu ili varalicu.
Seceri se ne dele na "prirodne" i "vestacke", niti je smisleno smatrati pojedine namirnice dobrim zato sto su prirodne,a druge "kariogenim" zato sto su vestacke...:
" 3 : No scientific basis for extrinsic and intrinsic sugar classification
In a report by the UK COMA Committee in 1989, sugars were classified as being extrinsic or intrinsic. A similar definition was proposed in a WHO Report (916). Extrinsic sugars were defined as those added to a food and intrinsic sugars as those “naturally integrated into the cellular structure”, eg those in fruits and vegetables. The report added that the physical location of sugars influenced their availability for bacterial metabolism and therefore their influences on caries. However, research has shown that extrinsic and intrinsic sugars impact plaque acidity equally. And the rate of metabolism of sugars in whole fruits to acids by plaque bacteria is identical to that of fruit juices."
izvor:
http://www.wsro.org/public/sugarandheal ... aries.html
Na istom izvoru se vidi da je i trend opadanja karijesa u zemljama gde se fluorise voda nezavistan od povecanja unosa secera!
Da stvari budu jos komplikovanije, na zalost onih koji misle da su stare istine vecne, izlaganje ugljenim hidratima nije uvek u korelaciji sa padom pH, pad pH nije uvek kariogen, a ni pomenuta Streptokoka NIJE jedini bakterjski uzrocnik koji dovodi do karijesa! Ukratko: moze da bude, al' ne mora da znaci, kako bi rekao nas narod! Izvolite:
"Previously, a mixed culture chemostat system was used to demonstrate that the pH generated from carbohydrate metabolism, rather than carbohydrate availability per se, was responsible for the shifts observed in the oral microflora which are associated with high carbohydrate diets and the development of dental caries. The aim of this study was to determine more accurately the microbially generated pH at which such shifts occurred. Nine oral bacteria were grown in three independent chemostats, and pulsed with glucose on 10 consecutive days. In one chemostat, pH control was discontinued for 6 h, and the pH fall was restricted to a minimum value of pH 5.5; the pH fall was arrested in the other two chemostats at either pH 5.0, or at pH 4.5. When the pH was allowed to fall, the numbers and proportions of Streptococcus mutans and Lactobacillus rhamnosus increased; this increase was directly related to the magnitude of the pH fall. Veillonella dispar was the most numerous organism following all glucose pulsing regimes, especially at low pH. The increase in proportions of acidogenic bacteria was accompanied by a fall in the proportions of acid-sensitive species (Fusobacterium nucleatum, Prevotella nigrescens, Streptococcus gordonii and Streptococcus oralis). The counts of these species were relatively stable between pH 5.5 and 4.5, but were markedly reduced when the pH fell below pH 4.5; Neisseria subflava could not persist in the culture at pH 4.5 or below. The data suggest that the disruption of communities associated with glucose metabolism and low pH can be explained in terms of a two-stage process. A fall in pH to a value between pH 5.5 and 4.5 may allow the enrichment of potentially cariogenic species, whilst permitting species associated with health to remain relatively unaffected. A further reduction in pH (<pH 4.5) may not only enhance the competitiveness of odontopathogens, but inhibit the growth and metabolism of non-caries-associated species. The results also indicate that species other that mutans streptococci or lactobacilli are competitive at pH values low enough to demineralise enamel, and thus suggest that a broader range of micro-organisms may be associated with caries initiation."
Izvor:
http://content.karger.com/ProdukteDB/pr ... elNr=16487
Jos jednom: bakterije i genetika, tek posle hrana. U protivnom, optuzujete sve one jadne majke cja su deca sa crnim zubicima da su krive - A NISU.
Ja normalno , kao lekar specijalista opste prakse, o ovome svemu ne bih morao nista da znam - ali eto, imam dva mala deteta, pa sam malo citao, a i preko puta moje ordinacije je sjajan stomatolog, koji mi je pre par godina pricao o bakterijama koje su identifikovane u plakovima i koje su PRAVI krivac za karijes - a ima ih skoro svaka cetvrta beba...
Uzgred: napisali ste da se beba "navikava na sladak ukus od malena" - sto je besmisleno. Zelja za slatkisima je zavisna od nivoa glikemije, koji zavisi od rada pankreasa, lucenja somatostatina, grelina i brojnih drugih hormona. Kamo srece kada bi se samo takvom restrikcijom unosa secera deca sprecila da se kasnije ne nagoje i ne pretvore se u sladokusce. To bi onda bilo veoma jednostavno. Na zalost, u medicini stvari uglavnom UOPSTE NISU JEDNOSTAVNE, pa Vas molim da i Vi prestanete da simplificirate problem i prakticno plasite roditelje i sve koji ucestvuju u odgajanju beba.
Manje dogmatizma i trivijalnosti, vise nauke i realnog zivota
Pozdrav!