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1.
Healthcare (Basel) ; 12(13)2024 Jul 08.
Article in English | MEDLINE | ID: mdl-38998894

ABSTRACT

Background: This cross-sectional study aimed to identify the prevalence of Candida albicans and Malassezia globosa in children with severe early childhood caries and caries-free children in Hong Kong. Methods: This study first recruited a total of 80 children aged between 48 and 72 months old, 40 children with severe early childhood caries, and 40 caries-free children. The children were then further divided into four groups, with 20 children in each group: Group 1: Severe early childhood caries-C. albicans, Group 2: Severe early childhood caries-M. globosa, Group 3: Caries-free-C. albicans and Group 4: Caries-free-M. globosa. Saliva, plaque, and caries lesion samples were collected from participants with severe early childhood caries, while only saliva and plaque samples were collected from caries-free participants. Caries status of the primary molars was assessed using WHO's decayed, missing, and filled tooth index, and the severity of cavitated lesions was determined based on International Caries Diagnosis and Assessment System criteria as caries code 5 or 6. The samples were analyzed using an Internal Transcribed Space and Quantitative Real-Time Polymerase Chain Reaction. Results:C. albicans was more prevalent in saliva and plaque samples of severe early childhood caries than in the caries-free group. Proportion of C. albicans in both saliva and plaque samples differed significantly between severe early childhood caries and caries-free groups (p < 0.05). Within the severe early childhood caries group, the proportion of children with C. albicans varied between 6 and 46%. No significant difference in M. globosa load was found between plaque samples of the severe early childhood caries and caries-free groups (p = 0.159). Conversely, no significant difference in M. globosa load was observed between saliva samples of severe early childhood caries and caries-free groups (p = 0.051). Conclusions: This study demonstrated a strong association between C. albicans and severe early childhood caries. M. globosa was detected in both the caries-free and severe early childhood caries groups, albeit at low levels.

2.
Healthcare (Basel) ; 12(5)2024 Feb 23.
Article in English | MEDLINE | ID: mdl-38470648

ABSTRACT

BACKGROUND: Non-pharmacological behavioural interventions (NPBIs) have been employed by dentists to alleviate dental fear and anxiety (DFA) among preschool and school children. The aim of this systematic review and meta-analysis was to investigate the effectiveness of different NPBIs in reducing DFA among children aged below 12. METHOD: A comprehensive search was conducted using four electronic databases to identify randomised controlled trials that assess the effectiveness of NPBIs among preschool and school children. Two reviewers independently screened and selected the relevant studies, evaluated the risk of bias, and extracted relevant data for qualitative and quantitative syntheses. RESULT: A total of 66 articles were included in the study. Except during more invasive dental procedures, the use of distraction techniques was found to result in significantly lower self-rated anxiety, better cooperation, and lower pulse rate compared to the tell-show-do method. However, inconsistent results were reported regarding the efficacy of virtual reality, modelling, visual pedagogies, tell-show-do and other NPBIs in reducing DFA among children. CONCLUSIONS: The studies exhibited substantial heterogeneity due to varying age groups, methods of implementing NPBIs, dental treatments performed, and measurement scales employed in the evaluation of DFA.

3.
Sci Rep ; 13(1): 18543, 2023 10 29.
Article in English | MEDLINE | ID: mdl-37899469

ABSTRACT

We compare the effect of calcium and phosphate-containing sodium fluoride (NaF) varnishes to conventional NaF varnish on S. mutans and L. fermentum counts. 3-4 years old children were grouped according to their caries status (n = 45 each): caries-free, with non-cavitated and with cavitated lesions. Each group was randomly subdivided (n = 15 each) into: Group 1- 5% NaF, Group 2- 5% NaF with tricalcium phosphate, Group 3- 5% NaF with casein phosphopeptide- amorphous calcium phosphate. Biofilm and saliva were collected to quantify microorganisms at baseline (T1) and 24-months (T2). Differences between groups were compared using Kruskal-Wallis test, followed by Dunn-Bonferroni post-test, at 0.0167 α-level. Significant difference was found for percentage of children with detectable biofilm L. fermentum (p = 0.013) at T1 and salivary S. mutans (p = 0.011) at T2. Percentage of children increased from T1 to T2 in Group 2 with salivary S. mutans (p = 0.007), salivary L. fermentum (p = 0.035), and biofilm L. fermentum (p = 0.019) and in Group 3 with salivary L. fermentum (p = 0.035). Bacterial change was not significant in both samples of intervention groups, except increase in salivary S. mutans (p = 0.038) in Group 3. Both calcium- and phosphate-containing NaF varnishes demonstrated similar antibacterial effect on S. mutans and L. fermentum compared to conventional NaF varnish.


Subject(s)
Dental Caries , Fluorides, Topical , Child, Preschool , Humans , Fluorides, Topical/pharmacology , Calcium , Fluorides/pharmacology , Sodium Fluoride/pharmacology , Bacteria , Calcium, Dietary
5.
Mil Med Res ; 10(1): 8, 2023 02 24.
Article in English | MEDLINE | ID: mdl-36829246

ABSTRACT

Fungi and bacteria afflict humans with innumerous pathogen-related infections and ailments. Most of the commonly employed microbicidal agents target commensal and pathogenic microorganisms without discrimination. To distinguish and fight the pathogenic species out of the microflora, novel antimicrobials have been developed that selectively target specific bacteria and fungi. The cell wall features and antimicrobial mechanisms that these microorganisms involved in are highlighted in the present review. This is followed by reviewing the design of antimicrobials that selectively combat a specific community of microbes including Gram-positive and Gram-negative bacterial strains as well as fungi. Finally, recent advances in the antimicrobial immunomodulation strategy that enables treating microorganism infections with high specificity are reviewed. These basic tenets will enable the avid reader to design novel approaches and compounds for antibacterial and antifungal applications.


Subject(s)
Anti-Infective Agents , Humans , Anti-Bacterial Agents , Bacteria
6.
Small ; 19(19): e2207057, 2023 05.
Article in English | MEDLINE | ID: mdl-36775954

ABSTRACT

Oxidative damage and infection can prevent or delay tissue repair. Moreover, infection reinforces reactive oxygen species (ROS) formation, which makes the wound's condition even worse. Therefore, the need for antioxidant and antibacterial agents is felt for tissue regeneration. There are emerging up-and-coming biomaterials that recapitulate both properties into a package, offering an effective solution to turn the wound back into a healing state. In this article, the principles of antioxidant and antibacterial activity are summarized. The review starts with biological aspects, getting the readers to familiarize themselves with tissue barriers against infection. This is followed by the chemistry and mechanism of action of antioxidant and antibacterial materials (dual function). Eventually, the outlook and challenges are underlined to provide where the dual-function biomaterials are and where they are going in the future. It is expected that the present article inspires the designing of dual-function biomaterials to more advanced levels by providing the fundamentals and comparative points of view and paving the clinical way for these materials.


Subject(s)
Anti-Bacterial Agents , Antioxidants , Anti-Bacterial Agents/chemistry , Antioxidants/pharmacology , Antioxidants/chemistry , Wound Healing , Oxidative Stress , Biocompatible Materials/pharmacology , Biocompatible Materials/chemistry
7.
Arch Oral Biol ; 146: 105607, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36543040

ABSTRACT

OBJECTIVE: To quantify and compare Streptococcus mutans (S. mutans) and Lactobacillus fermentum (L. fermentum) in saliva and biofilm of caries-free children to those with cavitated and non-cavitated lesions. DESIGN: One hundred and thirty-five 3-4 years old children were grouped (n = 45 in each group) according to their caries status: Clinical examination was done by a calibrated examiner. Biofilm and saliva were collected to quantify the microorganisms using qRT-PCR. The decayed-missing-filled surfaces (dmfs) was calculated by adding the number of decayed (ICDAS-II score 3-6), filled (ICDAS-II score 7 and 8) and missing (ICDAS-II score 9) surfaces due to caries. The correlation between the bacterial amounts and the number of carious surfaces was evaluated using Spearman's correlation coefficient. The levels and proportions of the microorganisms were compared using the Kruskal-Wallis test at an α-level of 0.05. RESULTS: The quantity of S. mutans and L. fermentum was significantly higher in saliva and biofilm of children with cavitated lesions, followed by those with non-cavitated lesions and the lowest in caries-free children. Also, salivary and biofilm S. mutans, along with biofilm L. fermentum levels, significantly correlated with the number of non-cavitated surfaces; while salivary and biofilm S. mutans and L. fermentum levels significantly correlated with the number of cavitated surfaces. Additionally, dmfs scores significantly correlated with the salivary and biofilm S. mutans and L. fermentum levels. CONCLUSIONS: S. mutans and L. fermentum in saliva and biofilm samples are associated with caries lesion severity.


Subject(s)
Dental Caries , Humans , Child, Preschool , Child , Dental Caries/microbiology , Streptococcus mutans , Polymerase Chain Reaction , Biofilms , Saliva/microbiology
8.
Int J Paediatr Dent ; 33(1): 50-62, 2023 Jan.
Article in English | MEDLINE | ID: mdl-35737872

ABSTRACT

BACKGROUND: Patients with multi-bracketed fixed orthodontic appliances are at a higher risk of developing enamel demineralisation. AIM: To compare the efficacy of the quarterly application of two varnishes in preventing white spot lesions (WSLs) during multi-bracketed fixed orthodontic treatment. DESIGN: Ninety-nine patients were randomly allocated into three intervention groups: Group A-standard oral hygiene instructions (OHI); Group B-5% sodium fluoride (NaF) varnish with standard OHI; and Group C-NaF plus tricalcium phosphate varnish with standard OHI. The outcome was assessed at 6-monthly intervals using a quantitative laser fluorescence device, clinical evaluation and photographic evaluation on six maxillary anterior teeth. A logistic regression model using generalised estimating equations with the intervention group, time and their interaction was used to compare the occurrence of WSLs, whereas the independent-samples Kruskal-Wallis test was used to compare the means of fluorescent values among different groups at p = .05. RESULTS: Generalised estimating equations (with intervention and time as predictors) showed that only the effect of time was found to be significant (p < .001), whereas there was no significant difference among the three intervention groups (p = .305) using clinical assessment or photographic assessment (p = .599). At the 18-month follow-up, sodium fluoride (NaF) varnish with standard OHI was shown to reduce the odds of WSLs by 55% (p = .200), and NaF plus tricalcium phosphate varnish with standard OHI by 42% (p = .327). CONCLUSION: The study failed to demonstrate that the quarterly application of both the study varnishes with OHI provided additional benefits compared with standard OHI alone in preventing WSLs, taking the effect of time of follow-up into consideration. There were higher odds of developing WSLs with an increased duration of orthodontic treatment.


Subject(s)
Dental Caries , Fluorides, Topical , Humans , Fluorides, Topical/therapeutic use , Sodium Fluoride/therapeutic use , Orthodontic Appliances, Fixed , Dental Caries/prevention & control
9.
J Evid Based Dent Pract ; 22(3): 101732, 2022 09.
Article in English | MEDLINE | ID: mdl-36162891

ABSTRACT

This systematic review aimed to investigate the risk predictors of caries in primary teeth and evaluate their association with the increment of Early Childhood Caries (ECC) among preschool children. This systematic review included only cohort or case-control studies of at least 2 years duration, over 300 participants and with English full-text. Potentially eligible studies were retrieved from 4 electronic databases (Ovid Embase, Ovid MEDLINE; PubMed, Web of Science) from inception to March 1, 2021. Independent screening and data extraction by 2 reviewers to identify factors associated with ECC increment, including family and socioeconomic factors, dietary and oral health-related habits, and clinical parameters. A total of 18 studies from 163 potential reports were included, involving 1,159,226 preschool children. Lower parental education attainment was found associated with ECC increment (WMD:0.87; 95% CI 0.52, 1.21); whereas immigration status (WMD:-0.38; 95% CI -1.09, 0.34), gender (WMD:-0.02; 95% CI -0.28, 0.24), and dental service utilization (WMD:0.35; 95% CI -0.10, 0.79) were not significant factors for ECC increment. All included studies consistently suggested positive correlations between ECC increment and baseline caries experience, plaque level, cariogenic microorganisms, and prenatal and passive smoking, while mixed findings were detected between ECC increment with dietary and oral hygiene practices. Preschool children whose parents have low education level are more likely to have greater increment of ECC over 2 years. Existing caries lesions, increased dental plaque level, cariogenic microorganisms, prenatal or passive smoking were also consistently identified as risk factors for ECC in all reviewed studies. This systematic review highlights specific risk factors to target for the prevention of ECC and supports implementing more oral health promotion for preschool children with parents of lower educational attainment.


Subject(s)
Dental Caries , Tobacco Smoke Pollution , Child, Preschool , Dental Caries/epidemiology , Dental Caries/prevention & control , Dental Caries Susceptibility , Female , Humans , Oral Health , Oral Hygiene/adverse effects , Pregnancy , Risk Factors
10.
JMIR Pediatr Parent ; 5(2): e28238, 2022 Jun 06.
Article in English | MEDLINE | ID: mdl-35666565

ABSTRACT

BACKGROUND: Increasingly, mobile apps are being used to promote oral care. Many of them are aimed at children. OBJECTIVE: This study aimed to systematically search and evaluate apps that promote oral care and hygiene for children. METHODS: A broad search strategy (13 keywords) was developed to identify apps from Apple's App Store and the Google Play Store in April 2019. After reviewing the apps' titles and summaries, potentially relevant apps were downloaded for viewing. The quality of the apps that met the inclusion criteria was assessed by the Health on the Net Foundation Code of Conduct (HONcode) criteria for medical and health websites and the Scientific Basis of Oral Self-care (SBOSC). RESULTS: More than 3000 Apps were identified and 54 relevant apps informed the review. The quality of the apps according to the HONcode criteria was generally low. The mean HONcode score was 1.8/8.0. One-quarter of the apps had a HONcode score of 0 (14/54, 26%). The SBOSC score of the apps was evaluated based on a 6-point scale. The mean SBOSC score was 1.5/6.0; 19% (10/54) of the apps had a score of 0. There was a significant and positive correlation between HONcode and SBOSC scores (r=0.37; P<.01). More recently uploaded apps had significantly higher HONcode scores (P<.05). CONCLUSIONS: There are many apps aiming to promote oral self-care among children. The quality and scientific basis of these apps are low. Newer apps are of higher quality in terms of scientific basis. There is a need to ensure high-quality and evidence-based apps are available. The effectiveness of apps in terms of oral care and clinical outcomes among children needs to be evaluated.

11.
Int J Paediatr Dent ; 32(4): 473-502, 2022 Jul.
Article in English | MEDLINE | ID: mdl-34562331

ABSTRACT

BACKGROUND: Demineralization during multi-bracketed fixed orthodontic treatment is a well-known problem. AIM: To systematically evaluate the evidence for the prevention of enamel demineralization during multi-bracketed fixed orthodontic treatment. DESIGN: Systematic reviews (with or without meta-analysis) that have appraised the primary studies on the prevention of demineralization during multi-bracketed fixed orthodontic treatment were searched systematically and included as per pre-defined eligibility criteria. The risk of bias of the included reviews was assessed by two authors using the ROBIS tool and AMSTAR-2 tool. RESULTS: Twenty-nine reviews conducted on 128 exclusive primary studies were included for the present overview; 23 of these reviews were assessed to be of a high risk of overall bias, 5 were of low risk, and 1 review was of unclear risk of bias. CONCLUSIONS: Predominantly, the published reviews have focused on fluorides, whereas some reviews have also studied the role of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), reminder therapy, lasers, and sealants. Professional fluorides, sealants, reminder therapy, and lasers might be valuable interventions to prevent demineralization during orthodontic treatment based on the conclusions of reviews with high quality; however, further studies are required to elucidate the role of CPP-ACP, chlorhexidine varnish, and powered toothbrushes.


Subject(s)
Fluorides , Tooth Demineralization , Cariostatic Agents , Dental Care , Dental Enamel , Dental Materials , Humans , Systematic Reviews as Topic , Tooth Demineralization/prevention & control
12.
Nanomicro Lett ; 13(1): 93, 2021 Mar 16.
Article in English | MEDLINE | ID: mdl-34138349

ABSTRACT

Transdermal microneedle (MN) patches are a promising tool used to transport a wide variety of active compounds into the skin. To serve as a substitute for common hypodermic needles, MNs must pierce the human stratum corneum (~ 10 to 20 µm), without rupturing or bending during penetration. This ensures that the cargo is released at the predetermined place and time. Therefore, the ability of MN patches to sufficiently pierce the skin is a crucial requirement. In the current review, the pain signal and its management during application of MNs and typical hypodermic needles are presented and compared. This is followed by a discussion on mechanical analysis and skin models used for insertion tests before application to clinical practice. Factors that affect insertion (e.g., geometry, material composition and cross-linking of MNs), along with recent advancements in developed strategies (e.g., insertion responsive patches and 3D printed biomimetic MNs using two-photon lithography) to improve the skin penetration are highlighted to provide a backdrop for future research.

13.
Small ; 17(17): e2007073, 2021 04.
Article in English | MEDLINE | ID: mdl-33710754

ABSTRACT

Metal-based nanoentities, apart from being indispensable research tools, have found extensive use in the industrial and biomedical arena. Because their biological impacts are governed by factors such as size, shape, and composition, such issues must be taken into account when these materials are incorporated into multi-component ensembles for clinical applications. The size and shape (rods, wires, sheets, tubes, and cages) of metallic nanostructures influence cell viability by virtue of their varied geometry and physicochemical interactions with mammalian cell membranes. The anisotropic properties of nonspherical metal-based nanoarchitectures render them exciting candidates for biomedical applications. Here, the size-, shape-, and composition-dependent properties of nonspherical metal-based nanoarchitectures are reviewed in the context of their potential applications in cancer diagnostics and therapeutics, as well as, in regenerative medicine. Strategies for the synthesis of nonspherical metal-based nanoarchitectures and their cytotoxicity and immunological profiles are also comprehensively appraised.


Subject(s)
Metal Nanoparticles , Nanostructures , Anisotropy , Cell Survival , Metals
14.
Pediatr Dent ; 43(1): 1E-12E, 2021 Jan 15.
Article in English | MEDLINE | ID: mdl-33662253

ABSTRACT

Purpose: To systematically evaluate the horizontal transmission of Streptococcus mutans in children and analyze its relationship with dental caries. Methods: Seven databases were searched for observational studies that have determined the transmission of S. mutans among children younger than seven years. Selection of included studies, data extraction, and quality assessment using Downs and Black's (1998) scoring system were performed. The inverse variance random-effect approach was used to pool the results, and statistical heterogeneity was evaluated using I-squared statistics. Results: Fifteen studies were included for qualitative synthesis, five of which were pooled for quantitative analysis. The risk ratio (RR) of sharing only one genotype in caries-free children versus children with caries was found to be 0.60 (95 percent confidence interval [95% CI] equals 0.45 to 0.80; P ≤ 0.001). The RR of sharing more than one genotype was 1.46 (95% CI equals 1.13 to 1.89; P=0.004) in children with caries versus caries-free children. These findings imply that children sharing only one genotype have a 40 percent lesser risk, and children sharing more than one genotype have a 46 percent higher risk of having dental caries. Conclusions: The systematic review provides evidence of the horizontal transmission of S. mutans and its association with dental caries.


Subject(s)
Dental Caries , Streptococcus mutans , Child , Dental Caries/epidemiology , Genotype , Humans , Streptococcus mutans/genetics
15.
J Dent ; 106: 103590, 2021 Mar.
Article in English | MEDLINE | ID: mdl-33524432

ABSTRACT

The current global COVID-19 pandemic has almost marked its one year of existence and influenced everyone either at an individual or community level. There are plenty of clinical recommendations and guidelines for the practitioners, and beyond doubt, the treating clinicians and other healthcare providers who have been in the frontline of this battle might have been significantly affected as a direct consequence of this pandemic. However, most of the clinical recommendations and guidelines are pivoted on intense research, and thus it is entirely reasonable to foretell that if dental research is impacted, the care-providers and consequently the patients will inevitably be affected. The present paper attempts to narratively summarize the potential disruptions on dental research due to the pandemic and endeavours to forewarn the dental researchers and scientific communities about the impact of COVID-19 on ongoing and ensuing dental research in the coming years. The ongoing COVID-19 pandemic has significantly affected laboratory and clinical research globally and will probably change the course of individuals and organizations engaged in dental research for some time. Tailor-made contingency plans by the individuals and organizations and sustaining the momentum of dental research by maintaining the flexibility in administration and utilization of research grants, extensions of grants and funding deadlines, adaption of study designs and procedures, pause or delay enrolment of participants, innovation in research collaborations and scholarly communications across different fields are some of the suggested measures that can be utilized to minimize the disruption during this pandemic.


Subject(s)
COVID-19 , Pandemics , Dental Research , Health Personnel , Humans , SARS-CoV-2
16.
Dent Mater ; 36(12): 1655-1665, 2020 12.
Article in English | MEDLINE | ID: mdl-33162115

ABSTRACT

OBJECTIVE: Proteolytic and demineralizing agents have a profound influence on the dentin ultrastructure, which plays a key role in the mechanical integrity of the tooth and integrity of dentin-biomaterial interfaces. In-depth characterization of dentin treated with a novel root canal irrigation protocol comprising sodium hypochlorite (NaOCl) and etidronate (HEDP) is lacking. This study comprehensively characterized and compared the effects of the continuous chelation (NaOCl/HEDP) and sequential chelation (NaOCl/EDTA) protocols on dentin. METHODS: Dentin blocks, dentin powder and root canals of mandibular premolars were distributed into Group 1, Saline (control); Group 2, NaOCl/EDTA; and Group 3, NaOCl/HEDP. Ultrastructural characteristics of the treated dentin were investigated using electron microscopy and light microscopy, while the surface roughness was analyzed using atomic force microscopy. Chemical compositional changes were characterized using Fourier transform infrared spectroscopy (FTIR) and energy-dispersive-X-ray spectroscopy (EDS), while collagen degradation was determined using ninhydrin assay. Data were statistically analyzed using multiple-factor one-way ANOVA and Tukey HSD tests (P = 0.05). RESULTS: NaOCl/HEDP resulted in partially degraded, yet mineralized collagen fibers, with minimal alteration to the subsurface matrix. Conversely, NaOCl/EDTA dissolved the hydroxyapaptite encapsulation, exposing collagen fibre bundles. There was no significant difference in the surface roughness between the two protocols (P > 0.05). NaOCl/HEDP resulted in homogenous distribution of organic and inorganic components on the treated surface. SIGNIFICANCE: This study highlighted that continuous chelation (NaOCl/HEDP) resulted in a frail surface collagen layer while sequential chelation (NaOCl/EDTA) exposed bare collagen fibres. These surface and sub-surface effects potentially contribute to structural failures of dentin and/or dentin-biomaterial interfacial failures.


Subject(s)
Dentin , Root Canal Irrigants , Dental Pulp Cavity , Edetic Acid , Root Canal Therapy , Sodium Hypochlorite
17.
Adv Mater ; 32(33): e2002129, 2020 Aug.
Article in English | MEDLINE | ID: mdl-32602146

ABSTRACT

Skin infections caused by bacteria, viruses and fungi are difficult to treat by conventional topical administration because of poor drug penetration across the stratum corneum. This results in low bioavailability of drugs to the infection site, as well as the lack of prolonged release. Emerging antimicrobial transdermal and ocular microneedle patches have become promising medical devices for the delivery of various antibacterial, antifungal, and antiviral therapeutics. In the present review, skin anatomy and its barriers along with skin infection are discussed. Potential strategies for designing antimicrobial microneedles and their targeted therapy are outlined. Finally, biosensing microneedle patches associated with personalized drug therapy and selective toxicity toward specific microbial species are discussed.


Subject(s)
Anti-Infective Agents/pharmacology , Needles/microbiology , Skin Diseases/drug therapy , Animals , Anti-Infective Agents/therapeutic use , Biosensing Techniques , Humans , Skin Diseases/microbiology , Skin Diseases/virology
18.
J Evid Based Dent Pract ; 20(2): 101404, 2020 Jun.
Article in English | MEDLINE | ID: mdl-32473795

ABSTRACT

OBJECTIVE: The use of pit and fissure sealants have been well supported in permanent teeth, but no concrete evidence is available to support this procedure in primary molars. This review aims to systematically assess randomized controlled trials and summarize the evidence on the effectiveness of different sealants in prevention and arrest of the pit and fissure occlusal caries in primary molars of children. MATERIALS AND METHODS: Four electronic databases were searched from inception to March 2018. Seven studies were included in the qualitative and quantitative syntheses. Two reviewers independently selected studies, extracted data, assessed risk of bias using the revised Cochrane risk of bias tool, and evaluated the certainty in the evidence adopting the Grading of Recommendations Assessment Development and Evaluation approach. Odds ratio and retention rate of different sealants were recalculated and analyzed. RESULTS: This review identified no significant difference in the overall caries incidence and progression when evaluated over 24 months between (1) resin-based sealant (RBS) and glass ionomer sealants (GIS) or resin-modified GIS; (2) conventional and newly developed RBS; (3) autopolymerized and light-polymerized RBS; (4) RBS with topical fluoride application and topical fluoride alone; and (5) RBS with topical fluoride application and resin infiltration with topical fluoride application. The pooled estimates of the mean retention rates of RBS and GIS on primary molars over an 18-months period were 85.94% and 23.18%, respectively. The certainty in the evidence of each outcome was determined as low or very low mainly because of high risk of overall bias and imprecision. CONCLUSION: There are currently insufficient well-controlled randomized controlled clinical trials to determine whether sealants are beneficial in preventing or arresting noncavitated occlusal caries in the primary molars.


Subject(s)
Dental Caries , Pit and Fissure Sealants , Child , Dentition, Permanent , Fluorides, Topical , Humans , Molar
19.
Lasers Med Sci ; 35(1): 213-219, 2020 Feb.
Article in English | MEDLINE | ID: mdl-31342201

ABSTRACT

To investigate the prevalence of different patterns of cemento-enamel junction (CEJ) morphology under swept-source optical coherence tomography (SS-OCT). One hundred extracted human teeth were used consisting of incisors, premolars, and molars. Each sample was observed for every 500 µm circumferentially along CEJ and OCT images of the pattern were noted. Microscopic observations were done for the representative sample using confocal laser scanning microscope (CLSM) and transmission electron microscope (TEM). The OCT images exhibited four CEJ patterns: edge-to-edge (type I), exposed dentin (type II), cementum overlapping enamel (type III), and enamel overlapping cementum (type IV). The prevalence of CEJ patterns was further statistically considered for mesial, distal, buccal, and lingual surfaces. The real-time imaging by SS-OCT instantly determined CEJ morphology. CLSM and TEM observation revealed morphological features along CEJ, which corresponded to OCT images of CEJ anatomy. OCT results showed 56.8% of type I pattern predominantly found on proximal surfaces, followed by 36.5% of type II pattern on buccal and lingual surface, 6.4% of type III pattern, and 0.3% of type IV pattern. There was a significant difference in prevalence of CEJ patterns among different types of teeth, but there was no statistically significant difference among the four surfaces in each type of teeth. OCT is a non-invasive diagnostic tool to examine the CEJ patterns along the entire circumference. OCT observation revealed even minor dentin exposure that would need clinical and home procedures to prevent any symptoms.


Subject(s)
Dental Enamel/anatomy & histology , Dental Enamel/diagnostic imaging , Tomography, Optical Coherence , Tooth Cervix/anatomy & histology , Tooth Cervix/diagnostic imaging , Bicuspid/anatomy & histology , Bicuspid/diagnostic imaging , Humans , Microscopy, Confocal , Microscopy, Electron, Transmission , Molar/anatomy & histology , Molar/diagnostic imaging
20.
J Atten Disord ; 24(7): 947-962, 2020 05.
Article in English | MEDLINE | ID: mdl-29182035

ABSTRACT

Objective: This systematic review investigated the oral health of children with ADHD. Method: A structured search strategy was performed on five electronic databases: SCOPUS, Web of Science, COCHRANE, PubMed, and PsychInfo. Studies were included in the review if they reported clinical oral health outcomes on a population diagnosed with ADHD under the age of 18 years old. Qualitative and quantitative analysis was performed on pooled prevalence and mean/median values for caries, trauma, periodontal problems, and tooth wear. Results: Twenty-seven effective articles were reviewed by two calibrated assessors. Meta-analysis of the results found higher mean number of decayed surfaces, plaque index, and trauma prevalence among children with ADHD. Conclusion: Children with ADHD show increased risk for caries and traumatic dental injuries, and may have poorer oral hygiene compared with children without ADHD. More awareness among clinicians would promote better caries- and trauma-preventive advice and management.


Subject(s)
Attention Deficit Disorder with Hyperactivity , Adolescent , Child , Humans , Oral Health , Prevalence
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