BIOMEDICAL ARTICLES
[Anatomical changes in upper airway of patients with OSAHS treated with oral appliance.]
Obstructive sleep apnea and hypopnea syndrome (OSAHS) is characterized by disturbed sleep, excessive daytime sleepiness and heavy snoring. The possible causes are abnormal upper airway structure and factors of nerves and muscles, etc. Oral appliance is known as an effective […]
[The effect of different polishing methods on enamel after interproximal enamel reduction.]
PURPOSE: The aim of this study is to compare the effect of the enamel demineralization degree after interproximal enamel reduction (IER) on extracted teeth with different polishing methods. METHODS: 20 extracted premolars were chosen as samples. In one premolar, a randomized […]
[The disinfecting effect of ozone on four kinds of bacteria.]
PURPOSE: To evaluate the disinfecting effect of ozone on 4 kinds of bacteria: Staphylococcus aureus, Streptococcus mutans, Staphylococcus epidermidis and Streptococcus pneumoniae. METHODS: The concentration of ozone that was transmitted by ozone generator at different time was determined by using iodine titrimetric method. […]
[The influence of Streptococcus sanguis on corrosion resistance of magnetic retainer.]
PURPOSE: To study the effect of Streptococcus sanguis on corrosion resistance of magnetic retainers in which are encapsulated with stainless steel artificial saliva. METHODS: A magnetic retainer was put in one culture flask,which was filled with artificial saliva.Ten of them were added […]
[The effect of overdose fluoride on the expression of Cbfalpha1 in the ameloblasts of rat incisor.]
PURPOSE: To evaluate the effect of overdose fluoride on the expression of Cbfalpha1 in the ameloblasts of rat incisor and its correlation with dental fluorosis at protein level. METHODS: Twenty Wistar rats were divided randomly into two […]
[Proliferation, apoptosis and expression of tissue non-specific alkaline phosphatase in cells of stratum intermedium during amelogenesis in postnatal stage of BALB/c mouse.]
PURPOSE: To study the apoptosis and expression of proliferating cell nuclear antigen(PCNA),tissue non-specific alkaline phosphatase(TNSALP) of stratum intermedium cell in postnatal stage of BALB/c mouse. METHODS: Fifty six BALB/c mice in […]
[Assessment of facial skeletal growth and response to implanted functional appliance therapy with three-dimensional images.]
PURPOSE: To evaluate the facial skeletal growth and response to implanted functional appliance therapy with three-dimensional images. METHODS: Eleven male Beagle dogs (7 months old and in late mixed dentition) were randomly divided into four groups: implanted functional […]
[The effect of different roughness of crown alloy materials on the adhesion of predominant peri-implant subgingival bacteria.]
PURPOSE: To investigate the effect of two crown metal alloys with different roughness on the adhesion of predominant subgingival bacteria. METHODS: Au- Pt alloy and Ni-Cr alloy with different roughness were attached to the Ti implant […]
[In vitro comparison of the retention adjustment of telescopic crowns.]
PURPOSE: The objective of the present in vitro study is to explore the retention readjustment measure of the non-precious metal telescopic crown. METHODS: Twenty-seven standard size dies were divided into three groups randomly, conventional Co-Cr alloy group, Co-Cr alloy slit telescopic crown group […]
[The effect of different concentrations of platelet-rich plasma on human periodontal ligament cells in vitro.]
PURPOSE: To assess the effect of different concentrations of platelet-rich plasma (PRP) on cell proliferation and alkaline phosphatase (ALP) activity of human periodontal ligament cells (hPDLCs) in vitro. METHODS: PRP was obtained from volunteer donors using two-step centrifugation. […]
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