View clinical trials related to Caries.
Filter by:The main objective is the longitudinal follow-up and comparison of the maintenance of the dental filling materials up to 24 months using the HVGIC IonoStar Plus versus Bulk X-Tra -Fil composite (Futurabond U adhesive system). 150 patients will be recruited in the Mafate dental health center. Patients with minimum 2 carious lesions (or multiple of 2, maximum 6) class I or II moderate not including the cusps, and touching the outside part of the middle of dentin. Assignment period will be 4 years: Inclusion period 18 months with 2 years following (6-month, 1 year and 2 years checking) and 3 months for statistical analysis and publications process Estimation of the parameters associated with a failure of the restoration at 24 months will follow the FDI scores. The Secondary objectives are to evaluate the caries risk of isolated population thanks to Cambra application and estimate the concordance of the judgment of maintaining the restoration between the expert in-situ and experts based on the images remotely.
Exploratory, phase I study to evaluate the clinical efficacy of Streptococcus dentisani CECT 7746 in the risk reduction of caries. Patients who meet the inclusion and exclusion criteria will be randomized and receive the corresponding treatment. The study will follow a randomized design, with two groups in parallel (placebo group and probiotic group) of prospective, double-blind follow-up, for a period of 45 days. The present study will be conducted in a single center and will include a total of 70 patients. The present study has a double main objective: - Evaluate whether the administration of the probiotic S. dentisani CECT 7746 alkalizes the basal pH of saliva. - Test the safety and tolerability of the probiotic Secondary - Evaluate other microbiological parameters associated with caries risk such as the presence of microorganisms such as S. mutans. - Evaluate the presence in the mouth and colonization capacity of S. dentisani. - Evaluate the lactic acid and the pH of the ex vivo plate before and after the administration of a sugar solution - Evaluate the salivary pH before and after the administration of a sugar solution - Evaluate the salivary pH before brushing with water. - Evaluate the buffer capacity of saliva
The purpose of this study is to evaluate the fluoride dose response of different dentifrice fluoride concentrations - 0, 250, 500 and 1100 ppm fluoride of our existing in situ model involving the use of human enamel specimens placed in the buccal flange area of the subjects partial denture with the modified model involving placement of bovine enamel specimens in a denture tooth location.
This study will be conducted to compare the diagnostic predictive values of a light induced fluorescence camera and Caries detection dye versus visual assessment method in identification of occlusal carious lesion.
BACKGROUND: To diagnose caries in clinical practice today, a combination of clinical examination with mirror and probe, and in sometimes x-ray images are used. For surfaces in contact with other teeth X-rays (preferably bitewing) are often required. Even though the radiation doses in bitewings are small, it is important to weigh risks against the benefit to avoid unnecessary radiation. There are other methods for diagnosing caries based on different forms of laser light. One such technique is based on the translucency of the teeth. The light is within the near infrared light (NIR) area. A product named DAIGNOcam (diagnostic camera) is using this technology. The light is led in a hand piece held against the tooth. The tooth is illuminated and the caries lesions can be seen like dark spots on a computer monitor screen. The technique is mainly used in adult patients and permanent teeth. However, there is no complete evaluation of how well the technology diagnoses caries in milk teeth. From a radiation hygiene point of view, it is particularly important to reduce the amount of X-rays to young individuals. X-rays are often experienced as difficult by younger children, which leads to poorer diagnostics. It is important to identify early caries in milk teeth as these teeth have thinner enamel and a more "porous" dentin. This may lead to that caries progress much faster thus more difficult to fix. This in turn leads to a risk of toothache and that the damage becomes so extensive that the tooth must be removed. OBJECTIVE: To investigate diagnostic accuracy / precision in caries diagnosis between teeth using DIAGNOcam in milk teeth comparable to caries diagnostics using bitewing x-rays. RESEARCH QUESTIONS: - Is DIAGNOcam a reliable diagnostic method for diagnosing caries in between teeth (approximal caries) in milk teeth? - How does child experience caries diagnosing performed with DIAGNOcam compared to X-rays? INVESTIGATION VARIABLES: Caries data are recorded according to the accepted diagnostic method at the surface level. Each examined tooth surface is assessed as either 1) intact; 2) caries only in enamel; 3) caries i dentin; or 4) the surface can not be judged. The same classification is used for X-rays and DIAGNOcam. The children will also be able to rate their experience of the X-ray examination and the DIAGNOcam survey using a Faces pain scale to see if there is any difference in experience between the different methods of investigation.
The purpose of this study was to evaluate the retention rates of a fissure sealant placed using different adhesive protocols over 24 months.Twenty-four subjects with no restoration and caries received fissure sealants (Clinpro™Sealant, 3M/ESPE) placed with different adhesive protocols. A total of 292 sealants (73 for each group) were placed. The sealants were placed as follows; a-without adhesive (acid-etch only), b-with an etch-and-rinse adhesive (SingleBondTM), c-with a self-etch adhesive (AdperTMEasyBond), d-with acid-etch+self-etch adhesive (AdperTMEasyBond) by two previously calibrated dentists using a table of random numbers. Two other calibrated examiners, independently evaluated the sealants at baseline and at 6-, 12-, 18-, and 24-month recalls. Each sealant was evaluated in terms of caries formation being present or absent and retention using the following criteria: 1=completely retained, 2=partial loss, and 3=total loss. The Pearson χ2 test was used to evaluate differences in retention rates among the sealants for each evaluation period.
The study will compare bacteria levels in cavities before and after silver diamine fluoride (SDF) treatment.
This study is designed to clinically evaluate the retention and development of caries when using self-priming (Embrace wetbond) and conventional flowable composite (Clinpro) as pit and fissure sealant in young first permanent molars.
Oral diseases tend to be exacerbated due to delayed diagnosis. Patients avoid visiting their dentist even for regular checkups, and develop late stage disease, jeopardizing the treatment outcome. There is an urgent need for an inexpensive and minimally invasive technology that would serve as a diagnostic aid, allowing 1) efficient early detection and 2) treatment customization. Diagnostic modalities based on the detection of volatile organic compounds in the exhaled air may answer this need. The proposed research aims at investigating signature molecular patterns of common oral diseases, as a first step toward the development of a computerized non-invasive diagnostic breath test, based on the "Na-Nose" device. The proposed research will be divided to three distinct stages. Stages 1-2 will serve for the detection and analysis of Volatile Organic Compounds connected with common oral diseases, and for the characterization of a specified diagnostic nano-receptor array. Stage 3 will serve for the clinical testing of the array and as a proof of concept. In a pilot experiment, headspaces above colonies of S.mutans, S.sanguis, P.gingivalis and F.nucleatum were trapped and analyzed using Gas Chromatography Mass Spectrometry (GC-MS). A unique VOC signature, consisting of 20-35 molecules, was detected for each of the bacterial strains. These promising results allow the development of an algorithm for statistical detection of oral diseases by their VOC profile alone. Bacteria and distressed tissues emit unique VOCs, and additional research is required with other types and strains of bacteria - including cultivation of samples from active periodontal and carious lesions. The results of the proposed research may be revolutionary. A simple and non-invasive air sampling at home or in a drugstore will significantly increase patient compliance and curability rates, and decrease healthcare expenditure.
Despite the advances in adhesive restorative techniques and materials, dental caries still remains a critical concern even today. In addition, recurrent caries related to microleakage is a common mode of failure of directly placed resin composite restorations. Resin composites are particularly susceptible to recurrent caries due to polymerization contraction and also imperfect adhesion of restorative to tooth tissue. Thus, strong durable bond between adhesive restoratives and tooth tissue and increasing the resistance of teeth to acid by encouraging the development of remineralization are essential to withstand secondary caries. Fluoride has been documented as a major contributing factor for the decline in the incidence of dental caries and also it has been accepted as an agent in the prevention of caries. Giomers are a new group of anhydrous resin based direct adhesive restorative materials based on the filler technology (PRG) have both advantages of glass ionomers namely, fluoride release and recharge, and resin composites with excellent optical and mechanical properties. The chemistry of Giomer materials facilitates fluoride ion release with the potential for a lower incidence of recurrent caries that was accepted as a major factor to retreat a resin restoration. Limited number of studies is available on their fluoride release, and polishability, as well as clinical survival. The objective of this controlled clinical trial is to evaluate the clinical performance of restorative material "SI-R21204 resin composite" versus a "nano-hybrid resin com-posite" materials for Class I and Class II cavities that needs to be restored in per-manent teeth.40 patients are recruited to the project which is carried out at the School of dentistry, Istanbul Medipol University, Turkey.