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1

Impairment of the oral stereognosis in the partial anterior open bite

100%
Koczorowski M., Wozniak W., Koczorowski R.
Folia Morphologica
|
2006
|
tom 65
|
nr 3
221-224
The study was performed in 20 children with partial anterior open bite and in 20 children of a control group. Stereognosis was evaluated on the basis of correct recognition responses to silicone pieces of the different shapes. Pieces were put on the dorsal surface of the tongue close to its apex. It was evident that the stereognostic ability was impaired in children with anterior open bite. This ability also decreased after infiltration anaesthesia of the tongue. The study indicated that the tongue plays an important role in oral stereognosis.
2

Radiological evaluation of chinchilla mastication organs

86%
Sulik M., Sobolewska E., Seremak B., Ey-Chmielewska H., Fraczak B.
Bulletin of the Veterinary Institute in Puławy
|
2007
|
tom 51
|
nr 1
The studies were undertaken in order to analyse radiologically bone structures of the maxilla and mandibula, including the teeth in chinchillas that show pathological overgrowth of the incisor and molar teeth. The analysis included 10 sick and 10 healthy animals, whose skulls were post-mortem dissected and compared. The X-ray pictures were examined for significant elements of the bone structure: shape and saturation of incisor and molar teeth, shape, saturation, and thickness of cranial sutures, as well as the evenness of the intensity of the symptoms. The structure of the incisor teeth revealed excessive tissue mineralisation. The tooth canal was invisible, which may indicate fibrosis of the pulp. The cutting edges exhibited excessive mineralisation, which implied a lack of abrasion. The pulp growth cone was invisible. The shape of the upper incisor was altered and semicircular, this prevented contact between the edges of the opposing teeth. The surface structure of the molars was considerably saturated with invisible dental pulp, which may imply fibrosis. The roots of the teeth were distended and flask-like in shape, and considerably saturated. The visible excessive mineralisation in all the molar teeth implied a general process of osteosclerosis.
3
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Melatonin and its role in oxidative stress related diseases of oral cavity

58%
Czesnikiewicz-Guzik M., Konturek S. J., Loster B., Wisniewska G., Majewski S.
Journal of Physiology and Pharmacology. Supplement
|
2007
|
tom 58
|
nr 3
5-19
4

Mineralisation level of selected skull parts in farm chinchillas with physiological and disturbed tooth surface wear

58%
Fraczak B., Sulik M., Sobolewska E., Felska-Blaszczyk L., Ey-Chmielewska H., Mirecka A.
Bulletin of the Veterinary Institute in Puławy
|
2010
|
tom 54
|
nr 2
211-216
The study was aimed to establish whether the chinchillas are susceptible to excessive dentition mineralisation and whether this may underlie reduced teeth wear. The analysis involved 14 chinchilla sculls, six showing excessive teeth growth and eight young and healthy animals. The sculls were visually examined and photographed; mandibles and teeth were subjected to mineral assay for the content of calcium, magnesium, and phosphates. The concentrations of calcium, magnesium, and phosphorus were lower in sick animals; the calcium-to-phosphorus ratio, on the other hand, was higher in sick chinchillas, and differed significantly from that in healthy animals. The level of phosphorus in the mandible was more than twice as high as that in other species of mammals. According to many authors, the excessive growth of teeth affecting farm chinchillas is probably due to a change in the diet in favour of low-protein feeds, which reduces the need to chew.
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