Active clinical trials for "Dental Caries"

Background: For treating deep caries lesions, selective or stepwise, i. e. one- and two-step incomplete excavation seems advantageous compared with complete caries removal. However, current evidence regarding the success, as defined by not requiring any re-treatments, or survival of teeth after different excavations is insufficient for definitive recommendation, especially when treating deciduous teeth. Moreover, restoration integrity has not been comparatively analyzed longitudinally, and neither patients', dentists' or parents' preferences nor the clinical long-term costs emanating from both initial and re-treatments have been reported yet. Our primary hypothesis is that success rates differ significantly between selectively and stepwise excavated teeth. Secondary hypotheses are that restoration integrity is assumed to significantly differ between selectively and stepwise excavated teeth.

Aim: to examine caries occurrence in children who ten years ago received a mixture of probiotics during infancy. Hypothesis: the administration of probiotics during infancy has no effect on future dental health.

Assess the effectiveness of applying grape seed extract (GSE) gel versus casein phosphopeptide-amorphous calcium phosphate (MI) paste on remineralization of white spot lesion (WSLs) in post orthodontic patients.

This research is conducted to compare the remineralization efficacy of eggshell powder gel and CPP-ACP (MI paste) on post-orthodontic white spot lesions.

Tooth preparation designs for posterior ceramic restorations have been based on traditional cast metal restoration designs, but with more occlusal tooth reduction and with a slightly increased taper. These preparations may involve the removal of considerable tooth structure. As more structure is removed, higher tooth strain and lower fracture resistance may occur.5 The increased tooth structure loss may increase cuspal flexure, thereby reducing the tooth fracture resistance, or open the restoration-tooth interface . However, it has been demonstrated that cusp recovery results in fewer failures, likely increasing the longevity of posterior ceramic restorations. Recently, minimally invasive cavity preparations for posterior indirect restorations were demonstrated to present the benefit of conservation of tooth structure, as well as improved stress distribution. However, the performance of posterior restoration is also material dependent. Due to the continuous advancements in dental ceramics and innovative manufacturing techniques. The aim of this study is to evaluate the clinical functional performance of ceramic onlay restorations with butt joint preparation design and compare them to shoulder preparation design.

This is a randomized clinical study. 48 subjects with a confirmed diagnosis of deep carious molars without pulpal lesions were randomized to one of two treatments: Patients treated with Light-cured calcium silicate (Theracal) liner, or treated with light-cured calcium Hydroxide (Biner LC) liner. Both two Treatments are with the step-wise excavation Technique. Treatment will be done at baseline, collecting dentin sample before application of liner material, then patients will be dismissed with Resin-modified Glass Ionomer restoration and recalled after 6 months. Re-entry of tooth required for completing the step-wise excavation technique collecting the second dentin sample after this time interval (6 months) and permanently restore tooth with composite restoration. Dentin samples will be microbiologically analyzed and the results will be statistically calculated.

The objective of this randomized clinical study is to evaluate the survival of repairs in restorations using composite resin (CR) or high viscosity glass ionomer cement (GIC) in primary molars. This trial is nested to another study (NCT03520309), so patients will be enrolled from CARDEC 3. 312 restorations will be included and randomized into two groups: glass ionomer cement (Riva Self Cure, SDI, Australia) and composite resin (Filtek Bulk Fill and Filtek Bulk Fill Flow, 3M ESPE, USA). After the end of treatments, patients will be followed for 24 months to assess the success of the restorations, which will be considered as the absence of the need for reintervention. The Kaplan-Meier survival curves and the log-rank tests will be performed to assess survival between groups and Cox regression analysis will be used to compare the outcome with the variables (α = 5%).

Effectiveness of lasers in reducing pain during and after root canal treatment for mandibular molar teeth affected with acute irreversible pulpitis.

The aim of the proposed study is to assess the clinical effect of photodynamic therapy (PDT) on dentin with carious lesions in primary teeth. Patients with primary molars exhibiting deep carious lesions on the occlusal surface indicated for restorative treatment will be randomly allocated to three groups: Group 1 - traditional caries removal with a low-speed drill; Group 2 - PDT + PapaMblue (carious tissue removal agent) modified with methylene blue; and Group 3 - PDT with methylene blue 0.05%. PDT will be performed with low-level laser for the treatment of the carious tissue. Dentin samples will be removed before and after PDT for microbiological analysis. The microbiological samples will be cultured in Brucella blood agar, Mitis Salibarius-bacitracin agar and Rogosa SL agar. The teeth will then be restored using high-viscosity glass ionomer cement, with clinical and radiographic follow up at six, 12 and 24 months. The data will be submitted to descriptive statistics.

This study aims to evaluate the effectiveness of 30% silver diamine fluoride in the treatment of clinically caries lesions in enamel, with radiographic image restricted to the enamel or the outer third of dentin on the proximal surfaces of primary and permanent posterior teeth. It also aims to compare it to the resin infiltration and to the control of proximal biofilm through the oral hygiene.