Indian Journal of Dental Research最新文献

Introduction: An increase in the incidence of postoperative sensitivity following composite restorations has become an everyday clinical problem. The aim of this study was to evaluate and compare the clinical effectiveness of a self-etching adhesive in combination with a dentin desensitizer (Gluma desensitizer), to a self-etching adhesive only, in preventing post-composite sensitivity immediately and over 30 days following a single topical application.

Materials and methods: This clinical trial included 112 patients (206 teeth), who were randomized to receive self-etching adhesive in combination with Gluma desensitizer or a self-etching adhesive only. The included teeth were tested for tactile, air blast and cold stimuli, following which patients were asked to rate their sensitivity on an 11-point Numeric Rating Scale (NRS). The subjects were then assessed for post-composite sensitivity immediately after, as well as 1 week and 1 month following the treatment. Descriptive statistics were compared using t-test and Chi-square test. Intergroup comparisons of change in NRS scores to various stimuli were compared using the Mann-Whitney U test.

Results: The baseline comparison of NRS scores to air, water and tactile stimuli did not reveal any statistically significant differences. The change in NRS scores post air blast, 1 week and 1 month, after the treatment for sensitivity, was observed to be significantly higher in the Gluma group compared to self-etching adhesive (P = 0.001).

Conclusion: Subjects belonging to the Gluma desensitizer group reported a statistically significant reduction in postoperative sensitivity to air blast stimuli, following composite restoration, at both 1 week and 1 month follow-up.

Background: The goal of effective primary tooth infection treatment is to keep the child healthy. The need to find the optimum root canal paste, however, was driven by the complex morphology of primary root canals and the desire for shorter therapy sessions.

Aims: To evaluate and compare the clinical and radiographic success of zinc oxide eugenol, Zinc oxide-Propolis, and endoflas as obturating materials in the pulpectomy of primary teeth at 3, 6 and 9 months of follow-up.

Materials and methods: Pulpectomy of 60 nonvital primary molars was accomplished in 50 children aged 4-9 years. Teeth were randomly divided into three equal groups of 20 molars according to the type of root canal filling material. Pulpectomy was performed in a single or multiple visits depending on the condition of the tooth, and a stainless-steel crown was used for final restoration. Clinical and radiographic results were evaluated double-blindly at baseline (1 week), and at 3, 6 and 9 months, while radiographic results were evaluated at baseline (1 week), and at 6 and 9 months. Data were analysed using the Chi-square/Fisher's exact test, and the P value was set at 0.05.

Results: Endoflas and a mixture of zinc oxide powder with Propolis showed promising results (100%), whereas zinc oxide eugenol showed a lower success rate than the other two materials (85%).

Conclusions: Endoflas and a combination of zinc oxide powder with Propolis can be a promising material as an alternative to Zinc Oxide Eugenol for obturation in primary teeth.

Introduction: Developmental dental anomalies are variations from expected clinical appearance, shape, size, color, contour, number, eruption pattern, and degree of tooth development. Early diagnosis of such anomalies helps formulate a treatment plan and provide optimal dental care.

Materials and method: Present study was a retrospective study designed to identify and analyze non-syndromic developmental dental anomalies amongst children and adolescents aged 9 to ≤19 years of Indian origin belonging to both genders who reported for orthodontic treatment. The data were subjected to descriptive and analytical statistics; Pearson's Chi-square test, and Spearman rank correlation coefficient were used.

Results: In 1017 subjects (559 male, 458 female), a total of 569 individuals (277 male, 292 female) and 853 teeth had anomalies. The most common anomalies in the study sample were impacted with teeth (24.5%), dilaceration (10.4%), and hypodontia (6.8%). The maxillary canine was the most commonly involved in any form of anomaly. Approximately, 32.54% (n = 331) of subjects showed only one tooth anomaly, 26.74% (n = 272) of participants showed anomalies in two teeth, whereas 7.6% (n = 77) of patients showed anomalies in three or more teeth.

Conclusion: Most commonly observed anomaly in the present study was impacted teeth (24.5%). The maxillary canine was the most commonly involved tooth in any form of anomaly.

Abstract: Rehabilitation of an attrited dentition is one of the most challenging task faced by a prosthodontist which requires a systematic, phase wise approach. Hobo's techniques and Pankey Mann Schuyler's philosophy are widely used and documented for full mouth rehabilitation. If along with attrition and discoloration teeth are also periodontally compromised, then the extraction of teeth followed by fabrication of complete denture either implant supported or mucosa supported is the only treatment option. In this case series, we have reported three cases of same family with Dentinogenesis Imperfecta, two cases presented with the severely worn dentition, poor aesthetics and difficulty in chewing. To rehabilitate these cases, Hobo's twin stage technique had been adopted and one case had periodontally compromised teeth along with faulty prosthesis in addition to Dentinogenesis Imperfacta, so removal of faulty prosthesis, full mouth extraction followed by implant supported overdenture was planned.

Introduction: The physical and chemical properties of calcium silicate cement might be affected due to exposure to acidic or alkaline conditions during clinical use. The present study aimed to evaluate the effect of acidic and alkaline environments on the surface morphology of biodentine (BD) and white mineral trioxide aggregate (wMTA).

Materials and method: Disc-shaped specimens of BD (n = 30) and wMTA (n = 30) were prepared in a metal mould and wrapped in pieces of gauze. They were divided into three sub-groups according to the storage media: group A, soaked in sterile distilled water at a pH of 7.0; group B, exposed to butyric acid buffered at pH 4.0; and group C, exposed to calcium hydroxide solution buffered at pH 12.0. The specimens were incubated for 7 days at 37°C, followed by examination under scanning electron microscopy at 1000x and 5000x magnification to characterise the microstructural morphology.

Results: Definite changes were seen in the microstructure of BD and wMTA on exposure to acidic and alkaline pH. The microstructure of wMTA tends to exhibit reduced cohesion when exposed to an acidic environment, especially when compared to an alkaline pH. Acidic pH exerts a milder influence on the morphological structure of BD when contrasted with its effects on wMTA.

Conclusion: Biodentine may emerge as a more prudent choice than wMTA for utilisation in inflamed periapical regions.

Introduction: Oral squamous papillomas are common lesions of the oral mucosa of squamous epithelial origin presenting as a papillary or verrucous exophytic mass. It is the fourth most common benign epithelial lesion associated with human papillomavirus (HPV) types 6 and 11. [ 1 ] It is usually seen in the age range of 30-50 years. The most common site of occurrence is the tongue and soft palate; however, other sites in the oral cavity may be affected.

Objectives: The aim of the article was to present a rare case report of juvenile squamous papilloma on the hard palate which has been treated successfully by wide local excision.

Treatment: The oral squamous papilloma was sent for histopathology after wide local excision of the lesion.

Conclusion: Oral squamous papilloma is a rare clinical entity in children. The histopathological and immunohistochemistry (IHC) evaluation revealed the propensity of malignant transformation.

Aim: To correlate oral stereognosis ability (OSA) and denture satisfaction in complete denture patients.

Objectives: Oral stereognosis is defined as the identification of forms solely through the use of oral receptor. When a denture is being worn by the patients the level of adaptation and later the extent of satisfaction has always been an important factor in the success of the treatment. Now here in this study we shall check (1) Whether oral stereognosis tests can be used as one of the diagnostic aids in predicting patients' performance with the complete denture. (2) Difference in oral stereognosis between satisfied and dissatisfied complete denture wearers.

Materials and methods: 60 patients, 40 in Group A and 20 in Group B participated in the study. Group A were experienced denture wearers on an average of 4 years. Group B were first time denture wearers. For assessing patient's opinion about their dentures, a questionnaire was prepared. Custom made heat cure acrylic resin test forms were made to test oral stereognosis ability. Both the groups went through the oral stereognosis test and denture satisfaction questionnaire. Based on the mean scores, both the groups were divided into satisfied and dissatisfied; high and low oral stereognosis score group.

Results: Spearman's analysis showed negative correlation between oral stereognosis and satisfaction of complete denture prosthesis.

Conclusion: Results from the study is conclusive that patients who were satisfied with their dentures had low oral stereognosis score and patients who were dissatisfied with their denture had high oral stereognosis score.

Introduction: Body Mass Index (BMI) percentiles have a bearing on skeletal maturation. The correlation of BMI with serum osteocalcin (OC) and insulin-like growth factor binding protein-3 (IGFBP-3) and cervical vertebral maturation (CVM) assumes even greater importance in orthodontic treatment planning for skeletal Class II jaw discrepancies. The aim of the study was thus to estimate BMI percentiles, serum OC, and IGFBP-3 and correlate it with CVM to assess the opportune pubertal growth spurt.

Materials and methods: Height and body weight were measured to the BMI percentiles of the study participants with skeletal class II malocclusion (n = 51, age 11-18 yrs). Lateral cephalometry was used for CVM staging. Blood was collected to quantitatively assess the serum OC and IGFBP-3 levels using Sandwich-ELISA.

Results: Obesity was more common in females compared to males (24% vs. 7.69%) while the reverse was true for underweight (4% vs. 15.39%). The majority of the obese participants belonged to CVM4-CVM6. Mean OC and IGFBP-3 were the highest in the obese category (71.879 ± 5.275 ng/mL, 55.541 ± 5.795 ng/mL). No statistically significant difference was observed in the mean OC and IGFBP-3 levels between males and females (64.993 ± 10.929 ng/mL vs. 58.795 ± 23.054 ng/mL, P = 0.231: 44.030 ± 12.767 ng/mL vs. 48.081 ± 10.843 ng/mL, P = 0.229).

Conclusion: The clinical relevance of serum biomarkers (OC, IGFBP-3) and their correlation with BMI percentile and CVM stages could be certainly used to assess the circumpubertal growth status. Obese and severely obese females, though they belong to the age range of 13-17 years and later CVM stages, there was a significant increase in OC and IGFBP-3 serum levels that could be used to plan orthopedic treatment.

Aim: This study aims to assess student satisfaction in their proficiency with different intraoral radiographic techniques.

Materials and methods: A Google Form survey was formulated and circulated to both fourth- and fifth-year dental students in 10 Iraqi dental schools.

Results: The analysed data reveal that most students have taken ten or fewer radiographs. Cone cuts and vertical and horizontal angulation errors were infrequent occurrences. Approximately 66% of students encountered challenges when positioning for posterior areas vertically and first premolar areas horizontally. Conversely, the anterior area proved to be less challenging. Out of 304 students, 53% expressed a reasonable level of satisfaction with their training in periapical radiography.

Conclusion: Apparently, number of taken periapical radiographs is not the only factor that influences students' satisfaction. Difficulty of implementing theoretical knowledge in the training seems to play a role in students' satisfaction in their training.

Background: Bisphenol A (BPA) monomer is used during the production of a wide variety of orthodontic materials such as composites, aesthetic brackets, and thermoplastic aligners; its release from incomplete polymerisation and resin degradation poses serious health risks. Hence, this study aims to assess BPA release from different aligners at various time intervals of its usage in an in vitro model.

Aim and objectives: To qualitatively and quantitatively determine BPA released from five different orthodontic aligners, at different time intervals.

Materials and methods: Five different orthodontic aligners, namely Dentcare aligner, Invisalign aligner, SD align, Smile aligner, and TAC aligners, were evaluated for BPA release by subjecting the aligners to surface abrasion, immersing in artificial saliva, and subjecting to thermal shock treatment to simulate oral environment at various time intervals (24 hours, 7 days, and 10 days) using gas-phase chromatography.

Statistical analysis used: Descriptive statistics (frequency and percentages) were employed to describe the study results.

Result: BPA was not detected and thus could not be analysed in the present study at different time points. The other elements were identified, which were totally different from one another at each time points.

Conclusion: It is concluded that BPA was not released from the various aligners at any time intervals. The presence of other components such as diethyl phthalate (DEP), which is more or less similar to BPA in terms of inducing toxicity to the liver and other tissues, is a matter of concern and needs further research.