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Objective: This study used spectrophotometry to examine how staining beverages affect the color stability of three commercial composite materials (nanohybrid composite (A), bulk fill composite (B), and flowable composite (C)) over time. Materials and Methods: Composite discs were randomly divided into groups. The specimens were kept in coffee, tea, red wine, and cola for 14 days at 37°C in the dark. At baseline, 7 days, and 14 days, spectrophotometers measured color. Calculated and analyzed color differences (E). Results: Staining beverages changed the color of all composites. Composite material A had the best color stability, whereas material C stained beverages the most. Red wine and coffee discolored composites most. Discoloration increased over the 14-day immersion period. Conclusion: Composite materials with better color stability were material A. Red wine and coffee discolored composites most. When choosing restorative materials, dentists should consider composite materials' color stability for long-lasting, visually acceptable results.
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Introduction: The general health of the individual can be calculated using the body mass index (BMI). In our study, we aim to evaluate the association of the BMI to the oral hygiene (OH) and dental caries (DC), in the school pupils. Materials and Methods: We piloted a cross-sectional study with 1000 participants of the ages 5-15 years with mixed dentition. We evaluated the BMI and the Oral Hygeine Index (OHI), DC. We compared the two oral parameters among pupils to the BMI using "ANOVA and Logistic regression analysis" for the identification of the significance and correlation. Results: We observed a significant variation for the different categories of the BMI and the OH, DC. BMI and the OHI, DC both depicted a strong and positive correlation. Conclusions: The nutritional status and the oral health are interrelated. Good oral health has to be promoted for the better general health.
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Introduction: Various materials are used to improve the longevity of the dental implants. In our study, we assessed the marginal bone loss around dental implants after implantation with platelet-rich plasma. Materials and Methods: We conducted a prospective clinical study among 200 subjects who were grouped equally as those with and without the application of PRF in the implantation. The radiographic and clinical features for the marginal bone loss were assessed and compared keeping P < 0.05 as statistically significant. Results: We observed no significant variation between the groups for the mobility, bleeding on probing, plaque index, and marginal bone loss. Conclusion: We can conclude that the application of PRP concentrate did not significantly affect the marginal bone loss in the dental implantation.
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Introduction: With the increased stress among the students, their sleep patterns have been derailed from the routine. Hence, in our study, we aimed to appraise among the dental students the occurrence of sleep disorders. Materials and Methods: We conducted a questionnaire-based survey study among 1115 dental students of 1-4 years. The survey was based on SLEEP-50 that had 50 questions that were given scores from 1 to 4 based on the response. The scores were analyzed for the statistical connotation, keeping P < 0.05 as significant. Results: We observed that 352 students suffered from sleep disorders. The sex ratio of male:female was 25:75. No significant age variation was seen. For the various disorders, insomnia (25%), nightmares (13%), and sleepwalk (8%), circadian rhythm disorders (34%), obstructive sleep apnea (26%), and narcolepsy (30%) were noted with significant variation. The habit of alcohol was seen in 17% of students. Conclusions: The sleep disorders were prevalent among the dental students due to the great amount of stress caused in the study. They should be educated about the stress management methods and importance of sleep.
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Introduction: The most common for the replacement for the teeth are the partial dentures. Hence, in our study, we analyzed the failure rates of the fixed partial dentures (FPDs). Materials and Methods: We conducted a retrospective study from the institutional record and analyzed 150 subjects. The various factors for the FPD's failure were noted and analyzed for any statistical significance. Results: We observed a significant difference between the various factors of the failure caries, periodontitis, uneasiness, and pain. Conclusion: The chief cause for the failure of the FPDs was identified to be caries, periodontitis, uneasiness, and pain.
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Introduction: The students pursuing professional studies such as medicine and dentistry have to endure a lot of stress. Hence, we evaluated the prevalence of stress and coping disorders among dental students. Methods: We conducted a questionnaire-based online survey study among 100 dental students of 1-4 years. The survey was based on the "modified General Health Questionnaire (GHQ-12; Goldberg and Williams, 1988)." The scores were analyzed for the statistical connotation, keeping P < 0.05 as significant. Results: We observed that over half of the dental pupils felt stressed. The dental students resorted to "Destructive coping mechanisms." Less than 15% of students sought medical and psychiatric counseling. The mean GHQ was 12 ± 1.7. Conclusions: Psychological strength is a prerequisite for good health and better performance in the studies as well as for the practice. There is an urgent need to focus on the mental health of the students specifically in the medical and dental fields.
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INTRODUCTION: Endodontically treated teeth dry with time, and its dentin undergoes changes making the teeth brittle and friable. The main function of a post is to strengthen or reinforce a weakened root. However, doing a post and core frequently requires the removal of sound tooth tissue. Recent materials introduced in the market for post and cores have been promising. AIM: The aim of this study is to evaluate the fracture resistance of endodontically treated extracted permanent teeth with variable remaining root dentin thickness after post space preparation. MATERIALS AND METHODS: A total of 270 freshly extracted permanent maxillary central incisors with fully formed apices were selected, decoronated at cementoenamel junction, and divided into three main groups according to remaining root dentin thickness, determined using a Vernier caliper into 0.5, 1, and 1.50 mm after post space preparation. Each group was further divided into three subgroups (subgroup a: Custom-made cobalt-chromium alloy post and core; subgroup b: Prefabricated glass fiber post and composite core; and subgroup c: EverStick fiber post). Each specimen was subjected to compressive load using universal testing machine. The force required to fracture was recorded and data were analyzed using analysis of variance (ANOVA) test. RESULTS: Analysis of variance revealed that compressive strength of the tooth is significantly affected by the increase in the remaining dentin thickness after post space preparation (p < 0.05). Furthermore, teeth with custom fabricated posts showed a significantly higher compressive strength (p < 0.05) than prefabricated glass fiber post and EverStick fiber post groups except the group with minimum remaining dentin thickness. CONCLUSION: The present in vitro study revealed that compressive strength of the post and core systems is directly related to the amount of healthy remaining dentin thickness. Hence, efforts to maximize the preservation of natural dentin should be taken during post space preparation.
