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1.
Curr Pharm Teach Learn ; 14(2): 153-158, 2022 02.
Article in English | MEDLINE | ID: mdl-35190156

ABSTRACT

INTRODUCTION: The primary objective was to describe the percentage of physician assistant (PA) programs who utilize pharmacists to lecture on pharmacology/pharmacotherapeutics content. Secondary objectives were to describe the percentage of pharmacology/pharmacotherapeutics lectures pharmacists deliver, the percentage of programs who employ a full-time pharmacist to coordinate the Pharmacology/Pharmacotherapeutics courses, and the inclusion of pharmacists in other courses in the curricula. METHODS: This was a prospective, cross-sectional, cohort survey. All PA programs listed on the Accreditation Review Commission on Education for the Physician Assistant (ARC-PA) website with an available email address for the Director of Pre-Clinical Education/Didactic Education, Academic Coordinator, or Chair/Director were recruited for the study. A link to an online survey was distributed to each program. The survey collected data on program characteristics as well as utilization of pharmacists in the curriculum. Descriptive statistics were used for all analyses. RESULTS: Of the 187 programs receiving the survey, 66 completed the survey (35%). Eighty-three percent of programs reported that pharmacists were utilized to deliver pharmacology/pharmacotherapeutics content. For those programs who utilize pharmacists, 80% reported pharmacists teach more than 75% of the lectures. Twenty-three (35%) programs reported having a full-time pharmacist on faculty to coordinate these courses. Almost half of respondents also commented that pharmacists were involved in other courses in the curriculum. CONCLUSIONS: More than 80% of programs responding to the survey utilize pharmacists to deliver pharmacology/pharmacotherapeutics content. Studying the utilization of pharmacists and their impact in other health sciences curricula is warranted.


Subject(s)
Pharmacists , Physician Assistants , Cross-Sectional Studies , Curriculum , Humans , Physician Assistants/education , Prospective Studies , United States
2.
J Funct Morphol Kinesiol ; 7(1)2022 Jan 11.
Article in English | MEDLINE | ID: mdl-35076554

ABSTRACT

There has been limited research to explore the use of body tempering and when the use of this modality would be most appropriate. This study aimed to determine if a body tempering intervention would be appropriate pre-exercise by examining its effects on perceived soreness, range of motion (ROM), and force production compared to an intervention of traditional stretching. The subjects for this study were ten Division 1 (D1) football linemen from Sacred Heart University (Age: 19.9 ± 1.5 years, body mass: 130.9 ± 12.0 kg, height: 188.4 ± 5.1 cm, training age: 8.0 ± 3.5 years). Subjects participated in three sessions with the first session being baseline testing. The second and third sessions involved the participants being randomized to receive either the body tempering or stretching intervention for the second session and then receiving the other intervention the final week. Soreness using a visual analog scale (VAS), ROM, counter movement jump (CMJ) peak force and jump height, static jump (SJ) peak force and jump height, and isometric mid-thigh pull max force production were assessed. The results of the study concluded that body tempering does not have a negative effect on muscle performance but did practically reduce perceived muscle soreness. Since body tempering is effective at reducing soreness in athletes, it can be recommended for athletes as part of their pre-exercise warmup without negatively effecting isometric or dynamic force production.

3.
Pharm Pract (Granada) ; 17(3): 1561, 2019.
Article in English | MEDLINE | ID: mdl-31592297

ABSTRACT

BACKGROUND: Studies examining relationships between patient-related factors and treatment outcome in patients with candidemia are limited and often based on all-cause mortality. OBJECTIVE: Our purpose was to examine the impact of concurrent renal replacement therapy (RRT) and other pre-specified factors on treatment outcome among adults with candidemia. METHODS: This Institutional Review Board (IRB)-approved, single-center, case-cohort study included patients over 18 years of age admitted to Duke University Hospital between Jun 1, 2013 and Jun 1, 2017 with a blood culture positive for Candida spp. Treatment-, patient-, and disease-specific data were collected, and outcome (success/failure) determined 90 days after the index culture. An odds ratio (OR) and 95% confidence interval (95%CI) were calculated for the following during therapy: receipt of RRT, fluconazole monotherapy regimen, intensive care unit (ICU) stay, and neutropenia. RESULTS: Among the 112 encounters (from 110 unique patients) included, treatment failure occurred in 8/112 (7.1%). Demographics were comparable between outcome groups. Among 12 patients receiving concomitant RRT, only 1 patient failed therapy. With regard to treatment failure, no significant differences were observed with RRT (OR, 1.21; 95%CI, 0.14 - 10.75), fluconazole monotherapy regimen (OR, 1.59; 95%CI, 0.3-8.27), ICU stay (OR, 1.43; 95%CI, 0.32-6.29), and neutropenia (0 treatment failures). CONCLUSIONS: Treatment failure, receipt of concomitant RRT, and neutropenia were infrequent in patients undergoing treatment for candidemia. In our cohort, exposure to RRT, a fluconazole monotherapy regimen, ICU stay, or neutropenia during treatment did not impact treatment outcome.

4.
Curr Pharm Teach Learn ; 11(9): 915-919, 2019 09.
Article in English | MEDLINE | ID: mdl-31570129

ABSTRACT

INTRODUCTION: The majority of Americans report using social media, but there is limited research describing impact of social media on academic performance and reading. Our objectives were to describe the association between social media use and reading levels of third-year student pharmacists (P3), describe the association between reading level and pharmacy school admissions data, and assess texts used in the curriculum for readability. METHODS: This was a prospective, cohort study. Reading level was determined by a standardized test. Social media data were collected via questionnaire. Admissions data were obtained from the admissions office. Readability of texts was assessed using readability software. RESULTS: Eighty-nine student pharmacists completed the study. The average reading level was 16.4. Students reported using social media for an average of 126 min daily. Students reported using an average of four social media sites and spending 88 min weekly on extracurricular reading. Negligible linear correlations were found between reading level and time spent on social media (ρ = 0.063), number of sites used (ρ =0.062), and time spent on extracurricular reading (ρ= 0.130). A moderate correlation (ρ = 0.524) was found between reading level and Pharmacy College Admission Test (PCAT) score. The average readability of guidelines and textbook chapters were 18.1 ±â€¯1.0 and 20.4 ±â€¯0.3, respectively. CONCLUSIONS: In P3 students, reading level was not associated with social media use. However, PCAT scores were positively associated with reading level. Furthermore, the readability of assigned texts exceeded the average reading level of the students.


Subject(s)
Literacy/standards , Reading , Social Media/classification , Students, Pharmacy/statistics & numerical data , Adolescent , Adult , Aged , Aged, 80 and over , Cohort Studies , Correlation of Data , Curriculum/trends , Female , Humans , Literacy/psychology , Literacy/statistics & numerical data , Male , Middle Aged , Prospective Studies , Social Media/standards , Social Media/statistics & numerical data , Students, Pharmacy/classification
5.
Pharm. pract. (Granada, Internet) ; 17(3): 0-0, jul.-sept. 2019. tab, graf
Article in English | IBECS | ID: ibc-188126

ABSTRACT

Background: Studies examining relationships between patient-related factors and treatment outcome in patients with candidemia are limited and often based on all-cause mortality. Objective: Our purpose was to examine the impact of concurrent renal replacement therapy (RRT) and other pre-specified factors on treatment outcome among adults with candidemia. Methods: This Institutional Review Board (IRB)-approved, single-center, case-cohort study included patients over 18 years of age admitted to Duke University Hospital between Jun 1, 2013 and Jun 1, 2017 with a blood culture positive for Candida spp. Treatment-, patient-, and disease-specific data were collected, and outcome (success/failure) determined 90 days after the index culture. An odds ratio (OR) and 95% confidence interval (95%CI) were calculated for the following during therapy: receipt of RRT, fluconazole monotherapy regimen, intensive care unit (ICU) stay, and neutropenia. Results: Among the 112 encounters (from 110 unique patients) included, treatment failure occurred in 8/112 (7.1%). Demographics were comparable between outcome groups. Among 12 patients receiving concomitant RRT, only 1 patient failed therapy. With regard to treatment failure, no significant differences were observed with RRT (OR, 1.21; 95%CI, 0.14 - 10.75), fluconazole monotherapy regimen (OR, 1.59; 95%CI, 0.3-8.27), ICU stay (OR, 1.43; 95%CI, 0.32-6.29), and neutropenia (0 treatment failures). Conclusions: Treatment failure, receipt of concomitant RRT, and neutropenia were infrequent in patients undergoing treatment for candidemia. In our cohort, exposure to RRT, a fluconazole monotherapy regimen, ICU stay, or neutropenia during treatment did not impact treatment outcome


No disponible


Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Adult , Middle Aged , Aged , Aged, 80 and over , Candida/pathogenicity , Candidiasis/etiology , Candidemia/epidemiology , Renal Replacement Therapy/adverse effects , Neutropenia/complications , Risk Factors , Fluconazole/therapeutic use , Antifungal Agents/therapeutic use , Intensive Care Units/statistics & numerical data , Retrospective Studies
6.
Pharm Pract (Granada) ; 16(3): 1204, 2018.
Article in English | MEDLINE | ID: mdl-30416622

ABSTRACT

BACKGROUND: There remains variability in both practice and evidence related to optimal initial empiric dosing strategies for vancomycin. OBJECTIVE: Our primary objective was to describe the percentage of obese patients receiving vancomycin doses consistent with nomogram recommendations achieving targeted initial steady-state serum vancomycin concentrations. Secondary objectives were to describe the primary endpoint in subgroups based on patient weight and estimated creatinine clearance, to describe the rate of supratherapeutic vancomycin accumulation following an initial therapeutic trough concentration, and to describe the rate of vancomycin-related adverse events. METHODS: This single-center, IRB-approved, retrospective cohort included adult patients ≥ 100 kilograms total body weight with a body mass index (BMI) >30 kilograms/m2 who received a stable nomogram-based vancomycin regimen and had at least one steady-state vancomycin trough concentration. Data collected included vancomycin regimens and concentrations, vancomycin indication, serum creatinine, and vancomycin-related adverse events. Patients were divided into two cohorts by goal trough concentration: 10-15 mcg/mL and 15-20 mcg/mL. RESULTS: Of 325 patients screened, 85 were included. Goal steady-state concentrations were reached in 42/85 (49.4%) of total patients. CONCLUSIONS: Achievement of initial steady-state vancomycin serum concentrations in the present study (approximately 50%) was consistent with the use of published vancomycin dosing nomograms.

7.
Pharm. pract. (Granada, Internet) ; 16(3): 0-0, jul.-sept. 2018. tab, graf
Article in English | IBECS | ID: ibc-174798

ABSTRACT

Background: There remains variability in both practice and evidence related to optimal initial empiric dosing strategies for vancomycin. Objective: Our primary objective was to describe the percentage of obese patients receiving vancomycin doses consistent with nomogram recommendations achieving targeted initial steady-state serum vancomycin concentrations. Secondary objectives were to describe the primary endpoint in subgroups based on patient weight and estimated creatinine clearance, to describe the rate of supratherapeutic vancomycin accumulation following an initial therapeutic trough concentration, and to describe the rate of vancomycin-related adverse events. Methods: This single-center, IRB-approved, retrospective cohort included adult patients ≥ 100 kilograms total body weight with a body mass index (BMI) >30 kilograms/m2 who received a stable nomogram-based vancomycin regimen and had at least one steady-state vancomycin trough concentration. Data collected included vancomycin regimens and concentrations, vancomycin indication, serum creatinine, and vancomycin-related adverse events. Patients were divided into two cohorts by goal trough concentration: 10-15 mcg/mL and 15-20 mcg/mL. Results: Of 325 patients screened, 85 were included. Goal steady-state concentrations were reached in 42/85 (49.4%) of total patients. Conclusions: Achievement of initial steady-state vancomycin serum concentrations in the present study (approximately 50%) was consistent with the use of published vancomycin dosing nomograms


No disponible


Subject(s)
Humans , Vancomycin/administration & dosage , Obesity/complications , Dosage Forms/standards , Nomograms , Body Weights and Measures/statistics & numerical data , Retrospective Studies , Communicable Diseases/drug therapy
8.
Am J Health Syst Pharm ; 74(23): 1997-2003, 2017 Dec 01.
Article in English | MEDLINE | ID: mdl-29167141

ABSTRACT

PURPOSE: The impact of automatic infectious diseases (ID) consultation for inpatients with fungemia at a large academic medical center was studied. METHODS: In this single-center, retrospective study, the time to appropriate antifungal therapy before and after implementing a policy requiring automatic ID consultation for the management of fungemia for all patients with an inpatient positive blood culture for fungus was examined. The rates of ID consultation; the likelihood of receiving appropriate antifungal therapy; central venous catheter (CVC) removal rates; performance of ophthalmologic examinations; infection-related length of stay (LOS); rates of all-cause inhospital mortality, death, or transfer to an intensive care unit within 7 days of first culture; and inpatient cost of antifungals were also evaluated. RESULTS: A total of 173 unique episodes (94 and 79 in the control and intervention groups, respectively) were included. Candida species were the most frequently cultured organisms, isolated from over 90% of patients in both groups. No differences were observed between the control and intervention groups in time to appropriate therapy, infection-related LOS, or time to CVC removal. However, patients in the intervention group were more likely than those in the control group to receive appropriate antifungal therapy (p = 0.0392), undergo ophthalmologic examination (p = 0.003), have their CVC removed (p = 0.0038), and receive ID consultation (p = 0.0123). Inpatient antifungal costs were significantly higher in the intervention group (p = 0.0177). CONCLUSION: While automatic ID consultation for inpatients with fungemia did not affect the time to administration of appropriate therapy, improvement was observed for several process indicators, including rates of appropriate antifungal therapy selection, time to removal of CVCs, and performance of ophthalmologic examinations.


Subject(s)
Academic Medical Centers/organization & administration , Antifungal Agents/therapeutic use , Disease Management , Fungemia/drug therapy , Referral and Consultation , Adult , Aged , Automation , Candida , Catheter-Related Infections/drug therapy , Catheter-Related Infections/microbiology , Central Venous Catheters , Communicable Diseases/drug therapy , Eye Diseases/diagnosis , Female , Fungemia/microbiology , Humans , Length of Stay , Male , Middle Aged , Retrospective Studies
9.
Ther Clin Risk Manag ; 12: 1197-206, 2016.
Article in English | MEDLINE | ID: mdl-27536124

ABSTRACT

Despite recent advances in both diagnosis and prevention, the incidence of invasive fungal infections continues to rise. Available antifungal agents to treat invasive fungal infections include polyenes, triazoles, and echinocandins. Unfortunately, individual agents within each class may be limited by spectrum of activity, resistance, lack of oral formulations, significant adverse event profiles, substantial drug-drug interactions, and/or variable pharmacokinetic profiles. Isavuconazole, a second-generation triazole, was approved by the US Food and Drug Administration in March 2015 and the European Medicines Agency in July 2015 for the treatment of adults with invasive aspergillosis (IA) or mucormycosis. Similar to amphotericin B and posaconazole, isavuconazole exhibits a broad spectrum of in vitro activity against yeasts, dimorphic fungi, and molds. Isavuconazole is available in both oral and intravenous formulations, exhibits a favorable safety profile (notably the absence of QTc prolongation), and reduced drug-drug interactions (relative to voriconazole). Phase 3 studies have evaluated the efficacy of isavuconazole in the management of IA, mucormycosis, and invasive candidiasis. Based on the results of these studies, isavuconazole appears to be a viable treatment option for patients with IA as well as those patients with mucormycosis who are not able to tolerate or fail amphotericin B or posaconazole therapy. In contrast, evidence of isavuconazole for invasive candidiasis (relative to comparator agents such as echinocandins) is not as robust. Therefore, isavuconazole use for invasive candidiasis may initially be reserved as a step-down oral option in those patients who cannot receive other azoles due to tolerability or spectrum of activity limitations. Post-marketing surveillance of isavuconazole will be important to better understand the safety and efficacy of this agent, as well as to better define the need for isavuconazole serum concentration monitoring.

10.
Infect Drug Resist ; 9: 119-28, 2016.
Article in English | MEDLINE | ID: mdl-27354817

ABSTRACT

JNJ-Q2 is a novel, fifth-generation fluoroquinolone that has excellent in vitro and in vivo activity against a variety of Gram-positive and Gram-negative organisms. In vitro studies indicate that JNJ-Q2 has potent activity against pathogens responsible for acute bacterial skin and skin structure infections (ABSSSI) and community-acquired bacterial pneumonia (CABP), such as Staphylococcus aureus and Streptococcus pneumoniae. JNJ-Q2 also has been shown to have a higher barrier to resistance compared to other agents in the class and it remains highly active against drug-resistant organisms, including methicillin-resistant S. aureus, ciprofloxacin-resistant methicillin-resistant S. aureus, and drug-resistant S. pneumoniae. In two Phase II studies, the efficacy of JNJ-Q2 was comparable to linezolid for ABSSSI and moxifloxacin for CABP. Furthermore, JNJ-Q2 was well tolerated, with adverse event rates similar to or less than other fluoroquinolones. With an expanded spectrum of activity and low potential for resistance, JNJ-Q2 shows promise as an effective treatment option for ABSSSI and CABP. Considering its early stage of development, the definitive role of JNJ-Q2 against these infections and its safety profile will be determined in future Phase III studies.

11.
Expert Rev Anti Infect Ther ; 13(6): 787-98, 2015 Jun.
Article in English | MEDLINE | ID: mdl-25843556

ABSTRACT

Prior to 1981, treatment options for invasive fungal infections were limited and associated with significant toxicities. The introduction of ketoconazole marked the beginning of an era of dramatic improvements over previous therapies for non-life-threatening mycosis. After nearly a decade of use, ketoconazole was quickly replaced by the triazoles fluconazole and itraconazole due to significant improvements in pharmacokinetic profile, spectrum of activity and safety. The triazoles posaconazole and voriconazole followed, and were better known for their further extended spectrum, specifically against emerging mold infections. With the exception of fluconazole, the triazoles have been plagued with significant inter- and intrapatient pharmacokinetic variability and all possess significant drug interactions. Azoles currently in development appear to combine an in vitro spectrum of activity comparable to voriconazole and posaconazole with more predictable pharmacokinetics and fewer adverse effects.


Subject(s)
Antifungal Agents/therapeutic use , Azoles/pharmacokinetics , Azoles/therapeutic use , Mycoses/drug therapy , Azoles/adverse effects , Drug Interactions , Drug Therapy, Combination , Humans
12.
Am J Ther ; 20(6): 685-90, 2013.
Article in English | MEDLINE | ID: mdl-21768870

ABSTRACT

Extended-spectrum ß-lactamase-producing Escherichia coli (ESBLEC) are emerging pathogens causing urinary tract infections (UTIs) in community patients worldwide. Treatment for community-acquired ESBLEC UTIs, especially in the outpatient setting, may be problematic because many of the strains are resistant to the traditional oral therapies. Fosfomycin is an oral agent that is approved for the treatment of uncomplicated UTIs caused by Enterococcus faecalis and E. coli. Data evaluating the clinical efficacy of fosfomycin for the treatment of community-acquired ESBLEC lower UTIs are limited. Three studies evaluating fosfomycin in the treatment of ESBLEC lower UTIs have been conducted. Clinical success was documented in >78% of patients. From the available data, it seems that fosfomycin may be an effective and reasonable treatment option for outpatient management of community-acquired ESBLEC UTIs, excluding pyelonephritis. Fosfomycin is a very attractive agent because it is available orally, has limited drug interactions, has a favorable adverse event profile, and would be very cost effective considering the potential complications of inadequate treatment and the high cost associated with parenteral therapies. Limitations to the clinical use of fosfomycin may include optimal dose and duration not being established, fosfomycin not often being included on culture and sensitivity reports and emerging resistance.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Escherichia coli Infections/drug therapy , Fosfomycin/therapeutic use , Urinary Tract Infections/drug therapy , Ambulatory Care , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/pharmacology , Community-Acquired Infections/drug therapy , Community-Acquired Infections/microbiology , Dose-Response Relationship, Drug , Drug Interactions , Drug Resistance, Bacterial , Escherichia coli/enzymology , Escherichia coli/isolation & purification , Escherichia coli Infections/microbiology , Fosfomycin/administration & dosage , Fosfomycin/pharmacology , Humans , Microbial Sensitivity Tests , Urinary Tract Infections/microbiology , beta-Lactamases/biosynthesis
13.
Med Mycol ; 49(6): 561-80, 2011 Aug.
Article in English | MEDLINE | ID: mdl-21366509

ABSTRACT

The introduction of several new antifungals has significantly expanded both prophylaxis and treatment options for invasive fungal infections (IFIs). Relative to amphotericin B deoxycholate, lipid-based formulations of amphotericin B have significantly reduced the incidence of nephrotoxicity, but at a significant increase in drug acquisition cost. Newer, broad-spectrum triazoles (notably voriconazole and posaconazole) have added significantly to both the prevention and treatment of IFIs, most notably Aspergillus spp. (with voriconazole) and the treatment of some emerging fungal pathogens. Finally, a new class of parenteral antifungals, the echinocandins, is employed most frequently against invasive candidal infections. While the role of these newer agents continues to evolve, this review summarizes the activity, safety and clinical applications of agents most commonly employed in the treatment of IFIs.


Subject(s)
Antifungal Agents/therapeutic use , Mycoses/drug therapy , Antifungal Agents/adverse effects , Antifungal Agents/pharmacology , Chemoprevention/methods , Humans
14.
Mycopathologia ; 168(6): 313-27, 2009 Dec.
Article in English | MEDLINE | ID: mdl-19308672

ABSTRACT

Invasive fungal diseases (IFDs) remain a major cause of morbidity and mortality in allogeneic stem cell transplant (SCT) recipients. While the most common pathogens are Candida spp. and Aspergillus spp., the incidence of infections caused by non-albicans Candida species as well as molds such as Zygomycetes has increased. For many years, amphotericin B deoxycholate (AMB-D) was the only available antifungal for the treatment of IFDs. Within the past decade, there has been a surge of new antifungal agents developed and added to the therapeutic armamentarium. Lipid-based formulations of amphotericin B provide an effective and less nephrotoxic alternative to AMB-D. Voriconazole has now replaced AMB-D as first choice for primary therapy of invasive aspergillosis (IA). Another extended-spectrum triazole, posaconazole, also appears to be a promising agent in the management of zygomycosis, refractory aspergillosis, and for prophylaxis. Members of the newest antifungal class, the echinocandins, are attractive agents in select infections due to their safety profile, and are a more attractive option compared to AMB-D as initial treatment for invasive candidiasis and (based on one study) challenge fluconazole for superiority in management with this mycoses. However, challenges do exist among these newer agents in very high-risk individuals like allogeneic SCT recipients, which may include adverse drug events, drug-drug interactions, variability in oral absorption, and availability of alternative formulations. The addition of newer agents has also stimulated interest in the potential application of combination therapy in serious, life-threatening infections. However, adequate studies are not available for most IFDs; thus, the clinical use of combination therapy is not evidenced based on most cases and preciseness in its use is uncertain. Finally, therapeutic drug monitoring of select antifungals (notably posaconazole and voriconazole) may play an increasing role due to significant interpatient variability in serum concentrations after standard doses.


Subject(s)
Antifungal Agents/therapeutic use , Mycoses/drug therapy , Stem Cell Transplantation/adverse effects , Amphotericin B/therapeutic use , Drug Therapy, Combination , Echinocandins/therapeutic use , Humans , Mycoses/etiology , Transplantation, Homologous , Triazoles/therapeutic use
15.
J Mater Sci Mater Med ; 20(4): 1001-7, 2009 Apr.
Article in English | MEDLINE | ID: mdl-19083083

ABSTRACT

The objective of this study was to assess effects of some clinically related preparation procedures during tooth whitening on enamel bonding properties. Sixty-two extracted human teeth were cleaned and divided into four groups. Forty-two of the teeth were left with their natural surface intact while 20 teeth were polished to form a flat surface. Half of the tooth served as the experimental side and received one of the two whitening products: Opalescence (10% carbamide peroxide) and Crest Whitestrips (6.5% hydrogen peroxide), for 2 weeks. Post-bleaching intervals included: 1 day, 1 week, and 2 weeks. On these days, tooth (10 mm x 1.5 mm x 1.5 mm) sections were evaluated using Raman spectroscopy, scanning electron microscopy and tensile bond strength tests. T-test, ANOVA test, and mixed model regression analysis were used to assess the differences. No significant difference existed between natural surface and polished surface teeth for all groups at both Day One and Week Two (P > 0.05). On Day One, both treated groups had significant lower bond strength than the control group (P = 0.002). After 2 weeks, no significant difference existed between any group (P = 0.381). SEM indicated that resin-enamel interfaces in bleached enamel exhibited more defects in granular formations when compared to the control. Raman results indicated a lower degree of polymerization (DP) of adhesive at the interface for treated teeth surfaces. In summary, pre-bleaching surface treatments such as polish or non-polish, had no effect on bond strength. Bleaching significantly decreased bond strength initially, but after 2 weeks, bleaching had no significant effect on bond strength. Storage time had significant effect on Opalescence treated enamel, but not on control and Whitestrip treated enamel. The decrease of bond strength may be related to interfacial defects and low DP due to oxygen release after bleaching.


Subject(s)
Dental Enamel , Peroxides , Humans , Microscopy, Electron, Scanning , Spectrum Analysis, Raman , Tensile Strength
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