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•Air-abrasion with bioactive glasses do not interfere with the bonding performance of universal adhesives.•Air-abrasion with bioactive glasses may prevent excessive degradation at the ...resin-dentine interface.•Bioactive glasses do not interfere with the differentiation of stem cells to odontoblasts.•Alumina may interfere with the differentiation of stem cells to odontoblasts.
To assess the microtensile bond strength (MTBS) and interfacial characteristics of universal adhesives applied on dentine air-abraded using different powders. The analysis includes the cytotoxicity of the powders and their effect on odontogenic gene expression.
Sound human dentine specimens were air-abraded using bioglass 45S5 (BAG), polycarboxylated zinc-doped bioglass (SEL), alumina (AL) and submitted to SEM analysis. Resin composite was bonded to air-abraded or smear layer-covered dentine (SML) using an experimental (EXP) or a commercial adhesive (ABU) in etch&rinse (ER) or self-etch (SE) modes. Specimens were stored in artificial saliva (AS) and subjected to MTBS testing after 24 h and 10 months. Interfacial nanoleakage assessment was accomplished using confocal microscopy. The cytotoxicity of the powders was assessed, also the total RNA was extracted and the expression of odontogenic genes was evaluated through RT-PCR.
After prolonged AS storage, specimens in the control (SML) and AL groups showed a significant drop in MTBS (p > 0.05), with degradation evident within the bonding interface. Specimens in BAG or SEL air-abraded dentine groups showed no significant difference, with resin-dentine interfaces devoid of important degradation. The metabolic activity of pulp stem cells was not affected by the tested powders. SEL and BAG had no effect on the expression of odontoblast differentiation markers. However, AL particles interfered with the expression of the odontogenic markers.
The use of bioactive glass air-abrasion may prevent severe degradation at the resin-dentine interface. Unlike alumina, bioactive glasses do not interfere with the normal metabolic activity of pulp stem cells and their differentiation to odontoblasts.
Compare the efficacy of the micro-osteoperforation (MOP) and corticotomy techniques in terms of maxillary canine retraction.
Thirteen patients (5 females, 8 males; mean age, 18.07 ± 6.74 years) with ...healthy permanent dentition and requiring the extraction of maxillary first premolars were included in a split-mouth randomized clinical trial. Those subjects with previous orthodontic or endodontic treatment of the canines were excluded. At least 3 months post-extraction, MOPs and corticotomies were performed distal to the canines. Mini-screws with closed-coil springs (150 g) were used for the canine retraction. Dental casts were made at baseline (T0) and 3 months post-intervention (T1). Trained and calibrated examiners measured the distances from the canines to the second premolars on both sides. A signed-rank sum test was used to compare the amount of canine retraction achieved in 3 months (T0-T1) on the 2 sides.
Retraction (mm) at the incisal level was similar in the corticotomy (3.34 ± 1.01) and MOP patients (2.74 ± 1.10) (P = 0.11); furthermore, there were no differences in the degree of medial retraction between the corticotomy (2.56 ± 0.67) and MOP (2.27 ± 0.82) (P = 0.31) procedures. No adverse events were observed.
There were not any clinically or statistically significant differences in retraction between the interventions. At 3 months, a MOP is as effective as a corticotomy in accelerating the rate of tooth movement.
To compare the ability of normalized versus non-normalized metabolite ratios to differentiate recurrent brain tumor from radiation injury using magnetic resonance spectroscopy (MRS) in previously ...treated patients.
Twenty-five patients with previous diagnosis of primary intracranial neoplasm confirmed with biopsy/resection, previously treated with radiation therapy (range, 54-70 Gy) with or without chemotherapy and new contrast enhancing lesion on a 1.5 T magnetic resonance imaging at the site of the primary neoplasm participated in this retrospective study. After MRS, clinical, radiological, and histopathology data were used to classify new contrast-enhancing lesions as either recurrent neoplasm or radiation injury. Volume of interest included both the lesion and normal-appearing brain on the contralateral side. Non-normalized metabolic ratios were calculated from choline (Cho), creatine (Cr), and N-acetylaspartate (NAA) spectroscopic values obtained within the contrast-enhancing lesion: Cho/Cr, NAA/Cr, and Cho/NAA. Normalized ratios were calculated using the metabolic values from the contralateral normal side: Cho/normal creatinine (nCr), Cho/normal N-acetylaspartate (nNAA), Cho/normal choline, NAA/nNAA, NAA/nCr, and Cr/nCr. Results were correlated with the final diagnosis by Wilcoxon rank-sum analysis.
Two of three non-normalized ratios, Cho/NAA (sensitivity 86%, specificity 90%) and NAA/Cr (sensitivity 93%, specificity 70%) significantly associated with tumor recurrence even after correcting for multiple comparisons. Of the six normalized ratios, only Cho/nNAA significantly correlated with tumor recurrence (sensitivity 73%, specificity 40%), but did not remain significant after correcting for multiple comparisons.
Cho/NAA and NAA/Cr were the two ratios with the best discriminating ability and both had better discriminating ability than their corresponding normalized ratios (Area under the curve = 0.92 versus 0.77, AUC= 0.85 vs. 0.66), respectively.
Abstract Diet quality may be influenced by social determinants and weight status. This has not been studied in Puerto Rico; therefore, our cross-sectional study examined whether diet quality, ...assessed by the Healthy Eating Index-2005 (HEI-2005), differs by social determinants (sex, school type, and region) and weight status in children in Puerto Rico. As part of an island-wide study to evaluate oral health in 1,550 children aged 12 years, dietary intake was assessed in a representative subset (n=796) using a 24-hour diet recall. Diet quality was evaluated from the diet recall results using the HEI-2005. Overall mean HEI-2005 score was 40.9, out of a total maximum score of 100. Girls had significantly higher scores for whole fruit, total vegetables, whole grains, and sodium but lower scores for total grains and milk compared with boys ( P <0.05). Children from public schools had higher scores for total fruit, whole fruit, and dark green and orange vegetables and legumes, but lower scores for whole grains and milk compared with those from private schools ( P <0.05). Children from the central mountains had higher scores for the dark green and orange vegetables and legumes and for whole fruit compared with the other regions ( P <0.05). Overweight children had significantly higher scores for total vegetables and milk, but lower scores for total fruit and sodium compared with non-overweight children ( P <0.01). Some components of diet quality were associated with the social determinants studied and with weight status in our sample. Overall diet quality needs improvement in Puerto Rican children so that it is better aligned with dietary recommendations.
To identify the relationship between periodontal health knowledge and oral health-related quality of life among Caribbean adults.
A cross-sectional study was conducted in a representative sample from ...3 Caribbean cities (weighted N = 1805). Participants completed a questionnaire on oral health knowledge, hygiene habits, and other practices, as well as the Oral Health Impact Profile-14 (OHIP-14) questionnaire. The associations between knowledge and habits and OHIP-14 score and its tertiles were evaluated using negative binomial and multinomial logistic regression models, respectively, adjusting for confounders. Odds ratios and regression coefficients were reported.
Participants reporting none, little, and adequate knowledge about gum health had higher odds of being in the worst tertile for OHRQoL, compared to those reporting "good knowledge" (ORnone vs good = 2.38, 95% CI: 1.59-3.54; ORlittle vs good = 1.82, 95% CI: 1.19-2.78; ORadequate vs good = 1.68, 95% CI: 1.11-2.57). Participants reporting toothbrushing ≥ twice/day were less likely to be in the worst tertile for OHRQoL, compared to those brushing less often (OR = 0.67, 95% CI: 0.48-0.92). Self-reported gum bleeding was associated with double the odds of being in the worse tertile (OR = 2.03, 95% CI: 1.60-2.58).
According to the findings of this study, periodontal health knowledge is associated with reduced OHRQoL in Caribbean Adults. In addition, the frequency of brushing and the self-reported gum bleeding was related to a worse quality of life (QoL) level.
Abstract Objective Evaluate the efficacy of 0.8% arginine, potassium nitrate and sodium fluoride mouthwashes on dentine hypersensitivity reduction. Methods Six week randomized, double blinded, two ...cell, parallel single centre clinical study in the Dominican Republic; subjects were randomized into three treatment groups: mouthwash containing 0.8% arginine, PVM/MA copolymer, pyrophosphates, and 0.05% sodium fluoride in an alcohol-free base (arginine); mouthwash containing 2.4% potassium nitrate and 0.022% sodium fluoride (potassium nitrate); a control mouthwash containing 0.05% sodium fluoride (negative control). Tactile and air-blast dentine hypersensitivity assessments were conducted at baseline, thirty minutes post rinsing and two, four, and six weeks of twice-daily product use. For treatment group comparisons, ANCOVA and post hoc Tukey's pair-wise comparisons ( α = 0.05) were done. Results Seventy-five subjects were enrolled; 69 subjects completed the study. There were no differences after thirty minutes of a single use, among the three groups with respect to mean tactile and air blast hypersensitivity scores compared to potassium nitrate and negative control mouthwashes ( p < 0.05). The arginine group presented a statistically significant improvement in the mean tactile scores compared to potassium nitrate and negative control groups after two, four, and six weeks ( p < 0.001) of product use; the arginine group showed a statistically significant enhancement in air blast hypersensitivity mean scores compared to potassium nitrate and negative control groups after two ( p = 0.001), four ( p < 0.001), and six weeks ( p < 0.001) of product use. Conclusion A mouthwash containing arginine provides a significant and superior reduction in dentine hypersensitivity compared to potassium nitrate and a negative control mouthwash after two weeks.
Gingivitis is a common oral health problem. Untreated gingivitis may progress to periodontitis, a common cause of tooth loss. The prevalence of gingivitis and calculus among Puerto Rican children is ...unknown. Understanding this prevalence can support early public health preventative strategies. This study aims to estimate the prevalence of gingivitis and calculus among 12-year-old Puerto Ricans by health region and to explore differences in distribution by school type (proxy for socio-economic status) and gender.
A probability-based sample of 113 schools was selected proportional to enrollment size and stratified by health region, school type, and gender. Two trained examiners evaluated the presence of gingivitis and both supragingival and subgingival dental calculus. Gingivitis was defined as the presence of gingival bleeding upon gentle probing (BOP) in at least one site, and the extent of the problem was classified according to the percentage of teeth whose gingiva presented BOP (limited: 25-49% of the teeth tested; extensive: >50% of teeth tested). Logistic and linear regression models, adjusted for health regions, were used to compare gingivitis and calculus prevalence and extent between genders and school types.
Gingivitis was found in 80.41% of the 1586 children evaluated. Urban-public schoolchildren had a slightly higher prevalence (83.24%) compared to private (79.15%, p = 0.16); those in rural-public (77.59%) and private schools had similar prevalence (p = 0.15). Extensive gingivitis was present in 60.81% of all children. The mean percentage of sites presenting BOP (BOP%) was 17.79%. Rural and urban public schoolchildren presented significantly higher BOP% compared to children from private schools (p = 0.0005, p = 0.002, respectively). Dental calculus was detected in 61.59% of the sample, boys presenting significantly higher (p = 0.005) total and supragingival calculus. Rural-public schoolchildren had a significantly higher prevalence of subgingival calculus compared to private schoolchildren (p = 0.02).
Gingivitis prevalence is higher among 12-year-old Puerto Ricans compared to data reported for U.S. adolescents. Public schoolchildren presented significantly higher BOP% sites compared to private schoolchildren. Boys presented a significantly higher total and supragingival calculus prevalence than girls. Oral health disparities related to gender and school type were identified by this study. Studies exploring the reasons for these disparities are recommended.
OBJECTIVES/GOALS: Patients with nsCL/P are prone to infections due to their open like wound cleft and immune system susceptibility. COVID-19 affected nsCL/P patients access to care and treatment ...delays. This study will determine COVID-19 infection risk between children with nsCL/P compared to those unaffected. METHODS/STUDY POPULATION: Retrospective cohort of children 5 years old and under with nsCL/P (exposed group) and children without nsCL/P (unaffected group); matched by age and gender. Participants will be selected from ongoing case-control study (n=500), School of Dental Medicine, and Pediatric University Hospital. Power analysis will calculate minimum sample size (power=0.80 alpha=0.05). Exclusion criteria: syndromic clefts, patients without diagnosis information and with history of co-morbidity. Other bacterial and viral infections present at the time of COVID-19 diagnosis, sex, age, geographic location, COVID-19 vaccination status and others will be considered as possible cofounders. Descriptive statistics, Chi-square, Odds Ratios at 95% confidence intervals and multiple logistic regression will be estimated. RESULTS/ANTICIPATED RESULTS: We hypothesize that we will identify an increased risk of COVID-19 infection in children with nsCL/P than in those unaffected or children without nsCL/P. Children with nsCL/P will also have an increased risk of symptoms and complications of COVID-19 infection than those unaffected. DISCUSSION/SIGNIFICANCE: Knowing the increased risk of COVID-19 infection in children with nsCL/P will aid to prioritize treatment. If a higher risk of COVID-19 infection is found, it will generate a need to modify elective surgery status to semi-elective; minimizing delayed treatments, unnecessary hospitalizations, complications and increased cost of treatment.
Abstract only Introduction Intracranial atherosclerosis‐related large vessel occlusion (ICAS‐LVO) is a common cause of failed mechanical thrombectomy (MT) in acute ischemic stroke (AIS) 1. Treatment ...of ICAS‐LVO with rescue stenting and/or angioplasty has shown promising outcomes, but diagnosing ICAS‐LVO during MT can be challenging 2, 3. There are uncertainties regarding optimal approaches, techniques, and timing for treating ICAS‐LVO. To understand current practice patterns and address these uncertainties, we conducted a survey among neurointerventional practitioners experienced in ICAS‐LVO management during MT. Methods We conducted an international online survey of neurointerventionalist members of the Society of Neurointerventional Surgery (SNIS) and the Society of Vascular and Interventional Neurology (SVIN). The 28‐question poll evaluated the preferences on diagnosis, treatment, and endovascular approach to ICAS‐LVO. Results 168 individual survey responses were obtained from practicing neurointerventional physicians. Overall, 40.6% reported an incidence of 6–10% of ICAS‐LVO during MT. Most neurointerventionalists (91%) diagnose ICAS‐LVO after a continued or recurrent occlusion or by the presence of fixed focal stenosis (FFS) after multiple MT attempts. Most respondents (86%) preferred acute treatment of ICAS‐LVO with rescue stenting (RS) +/‐ angioplasty. However, in patients who achieved recanalization with a severe FFS, the majority (44%) recommended maximal medical management only. The preferred medication during acute RS was intravenous antiplatelet therapy (69%), and after acute RS was dual oral antiplatelet therapy (58%). Fear of hemorrhagic complications (70%) was the most compelling reason not to perform RS +/‐ angioplasty. Twenty‐five percent of respondents were hesitant to randomize patients to acute RS versus medical therapy in a future randomized trial because of the lack of sensitive and specific biomarkers to diagnose ICAS‐LVO before MT treatment. Conclusion Our survey highlights the significant variability and uncertainty in the diagnosis and management of ICAS‐LVO during MT among neurointerventional practitioners. There is no equipoise regarding the optimal treatment strategy, and the fear of hemorrhagic complications associated with antithrombotic medications contributes to the variation in practice. Our survey underscores the need for future research and randomized clinical trials to address the uncertainties in the management of ICAS‐LVO during MT. Improved imaging biomarkers and consensus guidelines are essential to guide clinical decision‐making and optimize patient outcomes in this challenging population of AIS patients.
OBJECTIVES/GOALS: Evaluate the impact of COVID-19 on oral clefts services including surgical and dental treatments in Puerto Rico. METHODS/STUDY POPULATION: This Observational retrospective cohort ...study will consider patients 0-21 y/o with CL/P that visited the UPR school of Dental Medicine, Pediatric University Hospital Dr. Antonio Ortiz and ongoing case-control research project Face-Genes. Records to be used are classified as follow: Pandemic (March 15, 2020 to March 15 2022) Pre-pandemic (March 15, 2015 to March 15, 2017) Power analysis (power=0.80 alpha=0.05) will be calculated. Unavailable and incomplete medical records and those that did not attended study clinic during study period will be excluded. Data extraction instrument will be based on previous published study. Descriptive statistics, Chi-square, Odds Ratios at 95% confidence intervals and multiple logistic regression will be estimated. RESULTS/ANTICIPATED RESULTS: We hypothesize that surgical and dental services in Puerto Rico will be adversely impacted because of COVID-19 pandemic. DISCUSSION/SIGNIFICANCE: CL/P are common congenital diseases that require early interdisciplinary attention. Lack of timely care as well as surgery and treatment delays, could be associated with poorer prognosis, increased morbidity and mortality. If there is high risk of dh services during emergency situations, our findings will help to allocate the available resources
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