Comparative evaluation of the viscosity and length of resin tags of conventional and hydrophilic pit and fissure sealants on permanent molars: An In vitro study

Prabakar, Jayashri; John, Joseph; Arumugham, I. Meignana; Kumar, Rupesh; Sakthi, D Sri

doi:10.4103/ccd.ccd_131_18

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…The excess monomer appears to be responsible for enabling longer resin tags. Longer resin tags with the more flowable lower powder content experimental formulations (PLR 3:1) are consistent with other studies with flowable composites ( 33 , 34 ). Lack of Ba and reduced Si content in the tags-rich areas combined with higher C and N suggest that only fluid monomer molecules and to a lesser extent silica nanoparticles, are sufficiently small to diffuse far into the tubules.…”

Section: Discussionsupporting

confidence: 90%

Resin tags formation by modified Renewal MI formulations in a carious dentine model

Alkhouri,

Xia,

Ashley

et al. 2024

Front. Oral. Health

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ObjectivesTo determine which components in a new restorative material (Renewal MI) improve its ability to form resin tags within demineralized dentine.MethodsVaried components included polylysine (PLS), monocalcium phosphate (MCP), powder to liquid ratio (PLR), 4-methacryloyloxyethyl trimellitate anhydride (4META), and polypropylene glycol dimethacrylate (PPGDMA). Urethane dimethacrylate (UDMA), containing PPGDMA (24 wt%) and 4META (3 wt%), was mixed with glass filler with MCP (8 wt%) and PLS (5 wt%). PLR was 3:1 or 5:1. Reducing MCP and/or PLS to 4 and 2 wt% respectively or fully removing MCP, PLS, 4META or PPGDMA gave 16 formulations in total. Renewal MI, Z250 (with or without Scotchbond Universal adhesive) and Activa were used as commercial comparators. Collagen discs were obtained by totally demineralizing 2 mm thick, human, premolar, coronal dentine discs by immersion in formic acid (4M) for 48 h. The restorative materials were then applied on top (n = 3), before dissolving the collagen in sodium hypochlorite (15%). SEM/EDX was employed to determine resin tags length, composition, and surface coverage.ResultsTags were >400, 20 and 200 µm and covered 62, 55 and 39% of the adhesion interface for Renewal MI, Scotchbond and Activa, respectively. With experimental formulations, they were 200 and >400 µm long with high vs. low PLR and composed primarily of polymerized monomers. Percentages of the adhesion interface covered varied between 35 and 84%. Reducing PLS or MCP caused a decline in coverage that was linear with their concentrations. Reducing MCP had lesser effect when PLS or PLR were low. Removal of 4META caused a greater reduction in coverage than PPGDMA removal.ConclusionPLS, MCP, 4META, PPGDMA and low PLR together enhance Renewal MI tags formation in, and thereby sealing of, demineralized dentine.

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Section: Discussionsupporting

confidence: 90%

Resin tags formation by modified Renewal MI formulations in a carious dentine model

Alkhouri,

Xia,

Ashley

et al. 2024

Front. Oral. Health

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“…Sivaram et al 29 Evaluation of shear bond strength of conventional and nanohydroxyapatite crystals incorporated pit and fi ssure sealants…”

Section: Kumar Vyshialimentioning

confidence: 99%

Nanotechnology in Pit and Fissure Sealants: A Systematic Review

Aziz,

Muhammad,

Khan

et al. 2024

J Khyber Coll Dent

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Objectives: To conduct a comprehensive analysis of the literature and off er an overview of the effects of various nanoparticles (NPs) in conjunction with pit and fi ssure sealants (PAFs). Materials and Methods: Studies were chosen using an electronic search and evaluated based on key phrases, titles, and abstracts to see if they matched the inclusion criteria. The studies conducted between 2014-2022 were considered. Those articles which focused on the role of nanoparticles in dental sealants, published in English and had open access were studied. According to the research design, copies of all papers were gathered and analyzed for quality. Two databases (Pub Med and Google Scholar) were used. Results: 78 references were obtained, out of which 20 publications were selected after eliminating duplicates and following the exclusion criteria. According to the investigations of this review,modified sealants may have antibacterial action as well as an impact on mechanical properties. Conclusion: Antimicrobial effi ciency can be attributed to pit and fi ssure sealants by incorporating nanomaterials, which might alter their mechanical and fundamental physiochemical propertiesas well.

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Knowledge, Attitude and Pattern of Smoking Tobacco among Automobile Company Employees in Chennai - A Cross Sectional Study

Barma¹,

Kumar²,

Arumugham³

2021

jemds

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BACKGROUND Tobacco addiction has emerged as a major public health issue resulting in enormous disability, disease, and death and also acquired the dimension of an epidemic. More people die as a result of the worldwide tobacco epidemic than from tuberculosis (TB), human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS), and malaria combined. India is the second largest consumer of tobacco globally. It is estimated that five million preventable deaths occur every year globally. The trend of consumption of cigarettes is mostly seen among the young adult and adult population. Therefore, this study was done to assess the knowledge, attitude, and pattern of smoking among company and factory employees in Chennai. METHODS A cross sectional study was conducted among 102 automobile company employees in Chennai, where a pre-tested, self-administered questionnaire was used. Descriptive statistics, chi square test, Pearson correlation test were used to analyse the data. RESULTS Majority of the participants belonged to the 25 - 34 years age group. About 72.5 % of the participants believed smoking was harmful to their health. A statistically significant association was observed between education level and knowledge on smoking being harmful to health (P > 0.05). A positive correlation was observed among knowledge and attitude; however, both were negatively related to pattern of tobacco use. CONCLUSIONS Knowledge regarding hazards of smoking was high among the study population. However, attitude was found to be satisfactory. Majority of the study participants consumed 10 or less cigarettes per day. Even with a good knowledge towards ill effects of tobacco, good attitude towards quitting tobacco, practice of tobacco smoking was higher among study participants. This implies, tobacco cessation counseling should be made a priority health intervention. KEY WORDS Addiction, Cigarettes, Tobacco, Nicotine, Smoking

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Comparative evaluation of the viscosity and length of resin tags of conventional and hydrophilic pit and fissure sealants on permanent molars: An In vitro study

Cited by 7 publications

References 15 publications

Resin tags formation by modified Renewal MI formulations in a carious dentine model

Resin tags formation by modified Renewal MI formulations in a carious dentine model

Nanotechnology in Pit and Fissure Sealants: A Systematic Review

Knowledge, Attitude and Pattern of Smoking Tobacco among Automobile Company Employees in Chennai - A Cross Sectional Study

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