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NCT ID: NCT03703648 Recruiting - Clinical trials for Head and Neck Cancer

Post-radiation Dental Disease Amongst Head and Neck Cancer Patients

Start date: December 1, 2018
Phase:
Study type: Observational

Background Post-radiotherapy head and neck cancer (HANC) patients are at increased risk of dental caries and periodontal disease due to radiation-related damage to the teeth and salivary glands. Currently the exact aetiology of post-radiotherapy dental disease, and variation in its incidence and severity based on tumour location and radiotherapy dose, is poorly understood. Consequently there is a lack of clear guidance on how HANC patients should be dentally managed both before and after their radiotherapy. Aim The aim of this study is to quantify the relationship between dental radiation dose, 'spared' parotid gland radiation dose, tumour location, and post-radiotherapy dental disease. Methods A prospective cohort study will be undertaken in HANC patients treated with radiotherapy. A total of 215 patients will be recruited over a period of 2.5 years. Participants will be assessed and rendered dentally fit prior to radiotherapy in the School of Dentistry, Belfast. All patients will be followed-up at 6, 12, and 24-months post-radiotherapy. Data to be collected at each visit will include: total number of carious teeth, periodontal disease indices, salivary flow rates, diet, oral hygiene, mouth opening, xerostomia and oral health-related quality of life. Radiotherapy, including individual tissue-dose exposures, will be prescribed by the Clinical Oncology team as per current practice. Doses to the teeth and 'spared' parotid gland will be determined using radiotherapy research software (Non-Clinical Eclipse System sold by Varian Medical Systems UK Ltd). Using appropriate statistical tests, data analysis will determine the relationship between dental disease, radiation dose, and tumour location. Anticipated variation in the incidence and severity of post-radiotherapy dental disease based on the radiotherapy dose and tumour location, will inform the development of a clinical risk-assessment tool that will allow dentists to categorise patients as 'high' or 'low' risk of future disease. Guidelines regarding pre-radiotherapy dental extractions and post-radiotherapy preventative strategies will also be developed and will advise clinicians based on this risk assessment. A micro-costings study will be undertaken to evaluate patient and healthcare costs associated with the diagnosis and management of pre- and post-radiotherapy dental disease.

NCT ID: NCT03694496 Completed - Clinical trials for Periodontal Diseases

The Effectiveness of an Oral Health Education Programme of Adolescents in Hong Kong

Start date: September 1, 2018
Phase: N/A
Study type: Interventional

This project aims to evaluate the relative efficacy of a peer-led intervention based on the Social Cognitive Theory and Health Belief Model versus the control (only pamphlet delivery) on increasing the prevalence of healthy oral behaviors and oral health status among adolescents in Hong Kong. A two-arm non-blinded randomized controlled trial will be conducted among random samples of adolescents enrolling in secondary schools in Hong Kong. In addition to a baseline survey, two follow-up evaluative surveys will be conducted at months 6 and 12. Survey questionnaires will be conducted to participants at three time points (baseline, 6-, 12-month follow-up). Dental check-up examinations will be evaluated at two time points (baseline, 6-month follow-up). Repeated measures will be used to record participants' background, oral behaviors, theory based cognition, and potential confounders. Validated scales will be used. DMFT, plaque index and CPI index will be used to assess the oral health status of participants.

NCT ID: NCT03681340 Completed - Caries, Dental Clinical Trials

Remineralization Effects of Hydroxyapatite Toothpaste

Start date: August 7, 2018
Phase: N/A
Study type: Interventional

The objective of this in situ clinical study is to determine whether a toothpaste containing hydroxyapatite microclusters is as effective as a fluoridated kid's toothpaste in promoting remineralization of early caries lesions and inhibiting the development of caries lesions.

NCT ID: NCT03671200 Not yet recruiting - Caries,Dental Clinical Trials

Correlation Between Caries Experience in Primary Molars and First Permanent Molars

Start date: November 2018
Phase:
Study type: Observational

A cross- sectional observational study which will investigate whether data of past caries experience of the primary molars of 6-9 years old children can serve as an indicator for caries development in first permanent molars.as the first permanent molars is selected to represent the future caries status of the permanent dentition.

NCT ID: NCT03667768 Completed - Caries, Dental Clinical Trials

Atraumatic Restorative Treatment Sealants in First Permanent Molars

Start date: March 2010
Phase: N/A
Study type: Interventional

The aim of this bi-center study was to evaluate the retention and caries-preventive effect of Atraumatioc Restorative Treatment (ART) sealants, using two glass ionomer cement (GIC) versus non-sealant on first permanent molars of schoolchildren. The null hypothesis is that there is no difference in the retention rates of the two GIC, as well as in caries prevention between sealants application and non-sealant. Four hundred and thirty-seven 6-to-8-year-old schoolchildren were selected in two cities in Brazil. They were randomly divided into two groups, according to the GIC used (Fuji IX or Maxxion). All children had their four first permanent molars included in the research and two molars were sealed with a GIC, while the other two molars remained unsealed. Clinical evaluations were performed up to 36 months by one independent examiner at each city.

NCT ID: NCT03660410 Completed - Clinical trials for Periodontal Diseases

Study of Oral Conditions in Indigenous Populations in the State of Roraima - Brazil

Start date: March 2, 2017
Phase:
Study type: Observational

The objective of this cross - sectional observational study will be to evaluate the oral conditions of indigenous people in the state of Roraima, comparing habits and hygiene conditions in each ethnicity evaluated. This project was submitted to the Coordination of the Yanomami Indigenous Special Sanitary District, the CONDISI presidency and the CASAI leadership. Around 200 indigenous people from the aforementioned ethnic groups, of both sexes, aged between 18 and 75 years, will be evaluated

NCT ID: NCT03640013 Completed - Caries, Dental Clinical Trials

Comparing Hall vs Conventional Technique in Placing Preformed Metal Crowns From Sudan

Start date: February 1, 2015
Phase: N/A
Study type: Interventional

Preformed metal crowns (PMCs) have high success rates in restoring primary molars in children but they were not generally used by dentists, especially in developing countries due to its demand of high clinical skills with the conventional technique (CT). The biological approach, Hall technique (HT), requires less training and can be placed by less experienced dental operators including therapists. Previous studies were mainly carried out in developed countries. The aims were to investigate and compare the efficacies and cost-effectiveness of PMCs placed by these two techniques.

NCT ID: NCT03635138 Not yet recruiting - Caries, Dental Clinical Trials

Effect of the Incoportation of Copper and Zinc Nanoparticles Into Dental Adhesives

1170575
Start date: December 1, 2018
Phase: N/A
Study type: Interventional

The hypothesis is that Addition of copper or zinc nanoparticles to a dental adhesive confers antimicrobial and enzymatic degradation-resistant properties, retaining its adhesion mechanical properties and biocompatibility. To corroborate this hypothesis two groups of a dental adhesive doped with copper or zinc nanoparticles should be develop with a respective structural characterization by SEM-EDX, AFM and FTIR. This should be followed by a test of the antimicrobial activity of adhesive and a study of the influence of adhesive nanocomposites on matrix metalloproteases levels and/or activity in vitro to determine some concentrations more relevant. These would proceed to next stage. With the selected adhesive doped concentrations should be evaluate mechanical properties of doped adhesives and assess the biocompatibility by assays in primary cultured gingival fibroblast and cells type odontoblasts. Finally, once the concentration of either Cu- or Zn-doped adhesives is known, these will be evaluated with a clinical design phase in an in vivo model to study antimicrobial properties, matrix metaloproteases levels and/or activity. We will also study biocompatibility of adhesive nanocomposites and mechanical properties to corroborate the in vitro and ex vivo properties determined. There are results using copper nanoparticle on biomaterials that corroborates some properties such as antimicrobial activity against various species and copper release. All the evidence suggests that at low concentrations of copper nanoparticles, there are no significant effects on mechanical properties but with added antibacterial properties on the adhesive

NCT ID: NCT03590977 Not yet recruiting - Caries, Dental Clinical Trials

Efficacy of Licorice on Reducing Salivary Streptococcus Mutans Versus Chlorohexidine in Caries Risk Patients

Start date: September 1, 2018
Phase: N/A
Study type: Interventional

To compare the effect of a natural herbal licorice containing preventive measure alternative to chlorohexidine preventive measure to decrease the effect of streptococcus mutans.

NCT ID: NCT03586713 Recruiting - Caries, Dental Clinical Trials

Accuracy Of Sopro-Life Camera In Comparison With ICDAS II For Detection Of Initial Caries

Start date: May 2019
Phase: N/A
Study type: Interventional

This study will be conducted to assess diagnostic predictive values of a light induced fluorescence intraoral camera versus those of the visual-tactile assessment method according to modified ICDAS-II criteria in clinical