The Prevalence and Associated Factors of Periodontal Disease among 35 to 44-year-old Chinese Adults in the 4th National Oral Health Survey.

Objective: To assess the current periodontal status of 35 to 44-year-olds from the Chinese population and to analyse potential influence factors on periodontal disease.

Methods: The data of subjects were collected from both urban and rural areas of all 31 provinces, autonomous regions and municipalities of the mainland of China, as part of the 4th National Oral Health Survey. All subjects were aged 35 to 44 years old.

Dental Caries Status and its Associated Factors among 3- to 5-year-old Children in China: A National Survey.

Objective: To investigate the prevalence and severity of dental caries among pre-school children in China as part of the 4th National Oral Health Survey.

Methods: The sampling process was conducted with a multistage stratified cluster method. A total of 40,360 children aged between 3 and 5 years were recruited for this study.

Evaluation of Ion Release from Four Dental Sealants.

The purpose of this study was to determine the ion release from four commercially available pit-and-fissure sealants [3M Clinpro, 3M Concise™, BeautiSealant (BS), and GI FX-II)]. With each brand, 18 specimens were prepared. Their fluoride release in de-ionized water was measured by fluoride electrode, while the release of silicate (Si), aluminum (Al), sodium (Na), calcium (Ca), strontium (Sr), and phosphorus (P) was measured by inductively coupled plasma atomic emission spectroscopy (ICP-AES) on days 1, 3, 7, 14, 21, and 28.

Patterns and Risk Factors for White Spot Lesions in Orthodontic Patients with Fixed Appliances.

Objective: To evaluate the development and risk factors of white spot lesions (WSLs) in orthodontic patients with fixed appliances in a Chinese population.

Methods: A total of 202 subjects participated in the cross-sectional study. Clinical examination of the state of the entire labial (buccal) enamel surface was conducted under artificial light using a clinical mirror and an explorer.

A comparative evaluation of the efficacy of two novel desensitising dentifrices.

A comparison of the desensitising efficacy of two commercially available dentifrices with different modes of action was conducted in a randomised, examiner-blind, two-arm, parallel group, 8-week, longitudinal clinical study. Dentifrice A, (Sensodyne Multi Action Iso-Active), contained 50000 ppm KNO(3) and 1450 ppm fluoride as NaF. Dentifrice B, Colgate Sensitive Pro-Relief, contained a combination of 80000 ppm arginine, bicarbonate, calcium carbonate, and 1450 ppm fluorine as NaMFP.

Dental caries and first permanent molar pit and fissure morphology in 7- to 8-year-old children in Wuhan, China.

To obtain the caries experience and, plaque accumulation severity and pit and fissure morphology in first permanent molars in 7-8 children in Wuhan, as a reasonable prediction of caries risk and preventive attention in the future, a convenient sample of five primary schools in the vicinity of the Wuhan University School and Hospital of Stomatology was drawn. Two calibrated examiners orally examined all present grade 2 children in the classroom, using standard caries plaque and tooth morphology criteria. Dental caries was scored at enamel (D(2)) and dentine (D(3)) for tooth and surface level.

[Study of dental caries and the influence of social-behavioral risk factors on dental caries of 1,080 15-year-old adolescents].

Objective: To describe the dental caries of 15-year-old adolescents in Hubei province, and to determine the influence of various social-behavioral risk factors on dental caries in the population.

Methods: The survey employed a multistage, stratified, non-geometric proportional randomized sampling, representing adolescents aged 15-year-old in Hubei province. The epidemiological investigation of dental caries was made by clinical oral health examination.

Immunogenic characterization and protection against Streptococcus mutans infection induced by intranasal DNA prime-protein boost immunization.

Mucosal immune responses act as the first line of defense against dental caries. In this study, an optimal vaccination strategy was developed to enhance anti-caries mucosal immune responses. Mice and rats were vaccinated intranasally firstly with plasmid pCIA-P encoding PAc antigen of Streptococcus mutans and then with rPAc, or with pCIA-P for twice, or with rPAc protein for twice, respectively.

[Study on maternal periodontal diseases of the relationships between porphyromonas gingivalis, serum pro-immflamatory mediators and preterm low birth weight].

Objective: To investigate the associations between periodontal diseases, presence of Porphyromonas gingivalis (P. gingivalis), serum levels of pro-inflammatory mediators and preterm low birth weight (PLBW).

Methods: 60 women (30 PLBW and 30 healthy women), were recruited after postpartum within 3 days in this case-control study.

Assessing the effectiveness of a school-based oral health promotion programme in Yichang City, China.

Objectives: To assess the outcome of oral health promotion in schoolchildren over a 3-year period in Yichang City, Hubei, China.

Methods: In a cluster randomized controlled trial, the concept of the World Health Organization Health Promoting Schools Project was applied to primary schoolchildren. Seven intervention schools and eight control schools were randomly selected from one district by stratified cluster sampling.

Root caries patterns and risk factors of middle-aged and elderly people in China.

The objectives of this study were to describe root caries patterns of Chinese adults and to analyze the effect of selected demographic and socioeconomic factors on these patterns. A total sample of 1080 residents aged 35-44-years-old and 1080 residents aged 65-74-years-old from three urban and three rural survey sites in Hubei Province participated in both an oral health interview and a clinical oral health examination. Root surface caries prevalence rates were 13.

[A two-year randomized clinical trial of 1.23% fluoride foam on dental caries increment in primary teeth].

Objective: To evaluate the effect of bi-annual professional application of 1.23% fluoride foam on caries reduction in the primary dentition over a two-year period.

Methods: In a double-blind, cluster-randomised, placebo-controlled trial, 392 children aged 3 - 4 years from 15 classes were randomly assigned to two groups on a school class basis.

[A three-year evaluation of the effectiveness of the school-based oral health education program].

Purpose: The aim of this study was to evaluate the oral health outcomes of a school-based oral health education (OHE) programme on children, mothers and school teachers.

Methods: The WHO Health Promoting Schools Project was applied to primary schoolchildren in 3 experimental and 3 control schools in Hongshan District, Wuhan City, with a 3-year follow-up. The data were analyzed by means of the SPSS/PC+ system.

Anti-gingivitis effect of a dentifrice containing bioactive glass (NovaMin) particulate.

Background: The objective of this pilot clinical trial was to evaluate the anti-gingivitis and anti-plaque effects of a dentifrice containing bioactive glass (NovaMin) compared with a placebo control dentifrice in a 6 weeks clinical study.

Methods: The study design was a randomized, double-blinded, controlled clinical trial. One hundred volunteers took part in the study and were matched for plaque index (PLI), gingival bleeding index (GBI), age and gender.

Effect of professional application of APF foam on caries reduction in permanent first molars in 6-7-year-old children: 24-month clinical trial.

Objectives: The purpose of the study was to evaluate the effect of 6-monthly professional application of APF foam on caries reduction in permanent first molars in 6-7-year-old children over 24 months, and to compare the caries-preventive effect between APF foam and APF gel.

Methods: In a randomised controlled trial, 661 children aged 6-7-years-old were randomly divided into three groups on a school class basis. The foam group and the gel group received 6-monthly APF foam and APF gel application, respectively, and the control group did not receive any treatment.