Indian Journal of Dental Research最新文献

Aim: The objective of this in-vitro study was to assess the cytotoxicity and alkaline phosphatase (ALP) activity of curcumin and aloin extracted from Curcuma longa and Aloe vera, and mineral trioxide aggregate (MTA) on human dental pulp stem cells.

Methods: Human dental pulp stem cells (Lonza Group, Switzerland), curcumin (Sigma-Aldrich, USA), aloin (Sigma-Aldrich, USA), and ProRoot MTA (Dentsply, USA) were used in the study. 2.5-6.75-12.5-25-50 μg/ml of curcumin and aloin, 25%-50%-75%-100% of MTA were prepared; pulp cells unincubated with a material were assessed as controls. Cytotoxicity of all doses/concentrations of materials was analysed on days of 1, 2, 3, and 7 by WST-1 test. 2.5-6.75 μg/ml of curcumin and aloin, 25%-50% of MTA incubated with cells for 7-14 days were evaluated for ALP activity by ELISA test. Data was statistically analysed by One Way ANOVA, Tukey, and Sidak tests at GraphPad Prism 6.

Results: The findings have shown that 2.5 μg/ml of curcumin, all doses of aloin, 25% and 50% of MTA increased cell proliferation significantly on day 1 (P < 0.05). Curcumin, aloin, and MTA decreased the cell viability as dose/concentration and exposure time increased. All materials have shown no significant increases in ALP activity (P > 0.05) on 7 and 14 days.

Conclusion: Data of this study revealed that 2.5 - 6.75 μg/ml of curcumin/aloin, 25%-50% of MTA have promoted cell viability and proliferation of human dental pulp cells; and none of the materials have significantly increased the ALP activity at 7-14 days.

Objective: This clinical study was aimed to investigate the clinical and radiographic outcomes of NeoPutty MTA® (Nusmile), a novel mineral trioxide aggregate (MTA) pulpotomy material, in primary teeth of children aged 4-6 years.

Methods: An in vivo study was done in children aged 4-6 years old. A total of 50 primary second molar teeth were included in the study, with 25 of them undergoing treatment with formocresol (FC) and 25 receiving treatment with NeoPutty MTA®. The subjects were divided into two groups for treatment: the first group received a treatment involving a 1:5 dilution of Buckley's FC. The second group, however, underwent treatment with NeoPutty MTA®. This study employs a meticulous approach to evaluate the impact of different treatments on a significant number of molar teeth, using FC and NeoPutty MTA® as the respective treatment methods. The demographics of the subject pool are well-documented, comprising a balance of male and female participants. The technique employed for pulp removal and the subsequent management of bleeding are outlined, underscoring the thoroughness of the process.

Results: At 12 months, the NeoPutty MTA® pulpotomy group showed a significantly higher success rate clinically (96%) compared to the FC group (72%) (P < 0.05), but radiographically although NeoPutty MTA® was better (92%) than FC (82%), it was not statistically significant. NeoPutty®-treated teeth exhibited no signs of pain or discomfort and demonstrated better pulp vitality compared to the FC group.

Conclusion: NeoPutty MTA® demonstrated superior clinical success rates and better radiographic outcomes compared to traditional FC pulpotomy.

Background: Treatment modalities for cancer including surgery, radiotherapy and chemotherapy, have some complications even in the oral cavity. The literature describes oral lesions that may arise as a result of chemotherapy. However, information regarding oral symptoms in advanced cancer patients is poor.

Objective: To identify the oral manifestations like oral mucositis, dry mouth and loss of taste in patients undergoing chemotherapy treatment.

Methods: We evaluated 60 patients affected by malignancy undergoing chemotherapy treatment. The clinical and pathological data such as age, gender, diagnosis of malignancy and types of treatments with anticancer chemotherapeutic drug treatment, were obtained. Patients were routinely evaluated for the presence of oral mucositis based on the Common Terminology Criteria for Adverse Events (CTCAE) v5.0 scale for adverse effects and graded. Other findings like dry mouth and loss of taste were recorded.

Results: Of the 60 patients, 40 (66.6%) were male, and 20 (33.3%) females with a mean age of 53.7 years. Most patients about 63% and 83% were diagnosed with dry mouth and loss of taste, respectively and 71% of patients had mucositis. Chemotherapy drugs like Cyclophosphamide, carboplatin, nanoxel, paclitaxel, oxaliplatin, docetaxel and doxorubicin, were directly associated with oral mucositis.

Conclusion: Patients treated with chemotherapy for cancer most often suffer from a multitude of intense and debilitating oral dysfunctions. Oral lesions found in patients undergoing chemotherapy were mucositis, dry mouth and loss of taste. These adverse effects and an appropriate symptomatic therapy need to be discussed with the patients. Chemotherapy has a significant but transient effect on the oral symptoms.

Context: Restoration fractures and displacement are the two main causes of failure after the rehabilitation of severely worn primary anterior teeth.

Aims: Compare the effect of three post types on the fracture and push-out bond strength.

Methods and materials: Sixty undamaged maxillary anterior primary teeth were allocated into three groups according to post type: (I) Tetric N Ceram composite post, (II) prefabricated glass fiber post, and (III) high viscous glass ionomer post. Each group was further subdivided into two sub-groups depending on the test used: fracture resistance test and push-out bond strength test. The all specimens were mounted in acrylic resin blocks and tested using a universal testing machine. The fracture and failure mode were determined by a stereomicroscope inspection of all the specimens. Data were analyzed by one-way analysis of variance (ANOVA) and the Bonferroni post hoc test (P < 0.05).

Results: There was a statistically significant difference between fracture resistance and push-out bond strength values for the experimental groups (P < 0.05). The most significant fracture resistance value was in Group II and core/post fracture (restorable fracture) was the most obvious fracture in the three groups with the highest percentage in Group I. The most significant push-out bond strength value was in Group I and adhesive failure between dentin and luting cement/post was the most common type in the groups.

Conclusions: The fracture resistance and push-out bond strength were affected by the type of post (P = 0.000). Prefabricated glass fiber posts showed the highest fracture resistance in this study. However, Tetric N Ceram composite posts had the most restorable fracture. Tetric N Ceram composite posts had the highest bond strength with adhesive failure mode.