Association between Single Nucleotide Polymorphisms in Vitamin D Receptor Gene Polymorphisms and Permanent Tooth Caries Susceptibility to Permanent Tooth Caries in Chinese Adolescent.

Purpose: Dental caries is a multifactorial infectious disease. In this study, we investigated whether single nucleotide polymorphisms (SNPs) in vitamin D receptor (VDR) gene were associated with susceptibility to permanent tooth caries in Chinese adolescents.

Method: A total of 200 dental caries patients and 200 healthy controls aged 12 years were genotyped for gene polymorphisms using the PCR-restriction fragment length polymorphism (PCR-RFLP) assay.

The relationship between vitamin D receptor gene polymorphism and deciduous tooth decay in Chinese children.

Background: In the present study, we explored the link between vitamin D receptor (VDR) BsmI, TaqI, ApaI and FokI gene polymorphisms with deciduous tooth decay in Chinese children.

Methods: Our study included 380 Chinese children aged 4-7 years, whose DNA sample was collected from the buccal mucosa. VDR gene polymorphisms was determined by PCR-RFLP.

Influence of thermocycling on shear bond strength of glass ionomer cement to Er:YAG laser-prepared enamel.

Purpose: To evaluate the long-term influence of the shear bond strength (SBS) on glass-ionomer cement (GIC) to Er:YAG-irradiated and bur-prepared enamel.

Materials And Methods: One hundred and ninety human premolar and molars were selected and the crowns were sectioned. Samples were divided into five groups, according to surface treatments: bur preparation (B); bur preparation, etching with 37% phosphoric acid (BA); laser preparation (L); laser preparation, etching with 37% phosphoric acid (LA); laser preparation, twice irradiating with laser at low (150 mJ, 10 Hz; water spray 10 ml/min) (LL).

Effect of pretreatment on Er:YAG laser-irradiated dentin.

Erbium:yttrium-aluminum-garnet (Er:YAG) laser preparation of tooth cavities for restoration is an increasingly popular method, but its compatibility with existing composite material bonding protocols has not been fully defined. This study evaluated the effect of laser and etchant pretreatments on the performance of one-bottle self-etch adhesives in Er:YAG laser-prepared dentin. Eight groups of 20 extracted teeth were established to investigate bonding in tested dentin disks.