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78 active trials for Dental Caries

Selective Removal to Soft Dentine vs Selective Removal to Firm Dentine for Deep Posterior Caries Lesions

Removal of infected dentin contaminated with bacteria and remaining affected dentin detected as firm is the conventional strategy for the management of cavitated caries lesions. Recently, this strategy is termed as selective removal to firm dentin (SRFD) and seems to increase the potential risk of pulp exposure or loss of pulp vitality for deep caries lesions radiographically extending ¾ of dentin tissue. Alternatively, selective removal to soft dentine (SRSD) that refers to removal of caries tissue at the periphery of the cavity to firm dentin and remaining caries tissue detected as soft or leathery in proximity with the pulp might be a less invasive excavation method for deep caries lesions to maintain pulpal health. However, information on clinical advantages or disadvantages of SRSD and SRFD excavation methods is sparse and mostly rely on studies conducted for primary teeth. Moreover, clinical trials are needed to demonstrate the combined effect of carious removal strategies and calcium silicate-based materials. The aim of this study is comparison of clinical success rates of SRSD and SRFD techniques in posterior deep caries lesions. The primary outcome of the study is comparison of clinical success of SRSD and SRFD techniques by clinical and radiographic examination after 3 months, 6 months, 1 year and 2 years. The secondary outcome of the study is to investigate whether or not calcium silicate-based materials have an effect on the success rate of the treatment.

Start: November 2018
Impact of Compliance With Fluoride Use on Caries Incidence After Cancer Therapy

Approximately 40 people will participate in this study. This study will compare two different methods of fluoride application. Both methods are currently used in dental practice and both have been shown to be effective. If the participant chooses to participate in this study, participant will be asked to either wear a small tray that has been custom made to fit into the mouth into which fluoride is placed and worn for 5 minutes at bedtime, or participant will be asked to brush fluoride onto the teeth for 2 minutes at bedtime. Participant will be randomly assigned to use one of these methods of fluoride application: participant will not be allowed to choose which method of application you prefer. Participant will be asked to use fluoride every night while enrolled in the study. The fluoride that is used in the study is approved by the United States Food and Drug Administration and is commercially available with a prescription. After the study is over, participant will need to continue to use fluoride every night for life to help reduce the risk for dental cavities in the future. During the study, participant will receive a dental examination every 3 months for a total of 4 study visits over the period of 1 year. This visit will consist of a dental examination to identify any new cavities and instructions for fluoride use. Participant will also be asked to complete a written log to document daily fluoride use and to give feedback about compliance with fluoride use.

Start: August 2017
Longevity of Dental Fillings Utilizing 3D Printing

The aim of the present study is to compare the success of dental fillings prepared using 3D printing technique to those manufactured with the direct composite technique. A total of 100 adult patients will be selected from dental patients attending Kaarina Municipal Health Care Centre from October 2020. The inclusion criteria are as follows: presence of multiple cavities, fractures or cosmetic demands on bilateral permanent teeth. The restorative demand should be a class II, III or IV on first or second molars, or premolars. At least two fillings should be from the same tooth group (premolar/molar) in each patient. This will be a split-mouth study, whereby one tooth on one side will be restored using direct technique, and the contra lateral tooth restored using the indirect technique through random allocation. For both direct and indirect restorations, commercially available short-fibre reinforced composite material (Ever X Flow, GC) is used for core material (replacing dentin) and flowable composite material (Gaenial Universal Injectable, GC) for surface (replacing enamel, appr. 2mm thickness from the surface), according the manufacturer´s instructions. Clinical evaluations will be conducted immediately after the final finishing, and after 1 year, 3 years and 5 years. The evaluation will be based on the United States Public Health Service (USPHS) criteria. Descriptive statistics will be used to describe the frequency distributions of the evaluated criteria. To analyse the failure rate for direct vs. indirect restorations, 2x2 tables will be created. Non-parametric statistical procedures will be used due to ordinally structured data for the assessment of the restorations. Mann-Whitney U-test will be used to explore significant differences at different time points between direct and indirect restorations.

Start: September 2020
Improving Dental Health Among Toddlers in the Dominican Republic

Caries prevalence in the Dominican Republic (DR) seems high, although recent information is lacking. In DR there is a growth and development program for all children from the age of 0 to 5.Even though there is a mandatory educational health program for children and parents in this program, where periodically pediatricians examine them, this program does not include oral health education/prevention. Thus, it is proposed A) to devise materials to be used by pediatricians to share relevant information about caries control to parents of toddlers, and B) to evaluate the impact of such material on caries prevention for groups of toddlers over a 1.5-year period. Educational material will be developed for parents, and the pediatricians will deliver this material to 10-months-old children randomly selected at Plaza de la Salud Hospital. The PI will train the pediatricians in caries prevention and how to deliver the information to the parents in a clear manner. A total of 306 will be allocated into two groups. The experimental group (128 children) will receive the devised educational materials at 10 months, follow-up information will be provided at growth and development visits when the child is 18-, and 24 months old. The second group will be considered as the control group and will not receive any educational materials (178 children). All the enrolled children will receive fluoride containing toothpaste and tooth brushes. After 18 months when the children will be about 3 years old they will be examined to assess dental caries status. A sample mortality rate of 40% is expected during the two-year follow-up. Differences in caries status between the two groups will be examined using Welch's independent t-tests for unequal variances.

Start: February 2019