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Amalgam vs composite

Carolina Loch, Yuwen Liaw, Atikah Pg Metussin, Christopher Lynch, Nairn Wilson, Igor R Blum, Paul A Brunton
OBJECTIVE: To investigate current teaching and operative techniques of posterior composite restorations in dental schools in Oceania (Australia, New Zealand, Fiji and Papua New Guinea). METHODS: A 24-item validated questionnaire including closed and open questions was mailed to the Heads of Department of Operative/Restorative Dentistry in 16 dental schools. Responses were compiled in Excel and analyzed. RESULTS: The response rate of this study was of 94% (n = 15)...
January 25, 2019: Journal of Dentistry
A Zabrovsky, R Mahmoud, N Beyth, G Ben-Gal
OBJECTIVE: The study aimed to evaluate teaching trends and use of materials in direct posterior restorations during a 13-year period in an Israeli dental school. METHODS: Data registered in computerized files, relating to posterior restorations performed in the student clinic during the past 13 years (2004-2016), were collected. The restorative materials used (ie, amalgam vs composite), the type of tooth, and the number of surfaces restored were analyzed. RESULTS: Data analysis included 26,925 restorations performed during 13 years...
November 2018: Operative Dentistry
Cliff Lee, Hiro Kobayashi, Samuel R Lee, Hiroe Ohyama
The aim of this study was to determine how dental student self-assessment and faculty assessment of operative preparations compared for conventional visual assessment versus assessment of scanned digital 3D models. In 2016, all third-year students in the Class of 2018 (N=35) at Harvard School of Dental Medicine performed preclinical exams of Class II amalgam preparations (C2AP) and Class III composite preparations (C3CP) and completed self-assessment forms; in 2017, all third-year students in the Class of 2019 (N=34) performed the same exams...
April 2018: Journal of Dental Education
Battsetseg Tseveenjav, Jussi Furuholm, Aida Mulic, Håkon Valen, Tuomo Maisala, Seppo Turunen, Sinikka Varsio, Merja Auero, Leo Tjäderhane
BACKGROUND: Caries decline in the western world is accompanied by strong polarization among children; 8% of Finnish 5-year-olds having 76% of untreated caries. This high caries risk group needs preventive and restorative strategies. AIM: To explore survival of extensive restorations in primary molars. DESIGN: This study was based on health records from 2002 to 2016 of children under 18 years. RESULTS: Of severely affected primary molars (n = 1061), 41% were restored with preformed metal crowns (PMCs), 38% with glass-ionomer cement (GIC)/polyacid-modified resin composite (PAMRC)/resin-modified GIC (RMGIC), and 21% with resin composites (RC)...
March 2018: International Journal of Paediatric Dentistry
A H Reshak
The amalgamation of a wide optical band gap photocatalyst with visible-light-active CdO quantum dots (QDs) as sensitizers is one of the most efficient ways to improve photocatalytic performance under visible light irradiation. The photocatalytic performance of cadmium benzoate ((Cd(C7 H5 O2 )2 )3 (CH3 CN)1 ) is comprehensively investigated. The estimated optical band gap of cadmium benzoate is 2.64 eV and the EPc and EPv are about -0.09 V (vs. NHE) and +2.55 V (vs. NHE), respectively, which implies that cadmium benzoate possesses a high negative reduction potential of excited electrons due to its higher conduction band position, and hence, the locations of the conduction band minimum and the valence band maximum meet the redox capacity...
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
Carola Schopf, Alfonso Martín, Daniela Iacopino
Au nanorods were used as plasmonic transducers for investigation of mercury detection through a mechanism of amalgam formation at the nanorod surfaces. Marked scattering color transitions and associated blue shifts of the surface plasmon resonance peak wavelengths (λmax) were measured in individual nanorods by darkfield microscopy upon chemical reduction of Hg(II). Such changes were related to compositional changes occurring as a result of Hg-Au amalgam formation as well as morphological changes in the nanorods' aspect ratios...
2017: Science and Technology of Advanced Materials
Muhanad Alhareky, Mary Tavares
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Amalgam and resin composite longevity of posterior restorations: a systematic review and meta-analysis. Moraschini V, Fai CK, Alto RM, dos Santos GO. J Dent 2015;43(9):1043-50. SOURCE OF FUNDING: Information not available TYPE OF STUDY/DESIGN: Systematic review with meta-analysis of data.
June 2016: Journal of Evidence-based Dental Practice
Hend Alqaderi, Chun-Teh Lee, Sary Borzangy, Tom C Pagonis
OBJECTIVES: This systematic review was performed to evaluate the clinical outcome of coronal pulpotomy treatment to manage carious vital pulp exposure in permanent posterior teeth with closed root apices. DATA/SOURCES: PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guideline was used. A search of articles published between 1960 January and 2015 July was conducted in PubMed, EMBASE, and CENTRAL databases. STUDY SELECTION: Only studies that performed full coronal pulpotomy for carious vital pulp exposure of permanent posterior teeth and had clinical and radiographic assessments during at least one-year follow-up were qualified for data analyses...
January 2016: Journal of Dentistry
Shalizeh A Patel, Juliana A Barros, Christina M Clark, Gary N Frey, Charles F Streckfus, Ryan L Quock
The aim of this study was to examine the impact of psychomotor operative video demonstrations on first-year dental students who are performing specific procedures for the first time in a preclinical setting. The class was randomly divided into two groups, and three restorative procedures were selected. On the date on which each procedure was to be performed in the preclinical laboratory for the first time, one group (experimental, n=50) was shown a technique video for that specific procedure immediately before commencing the exercise; the control cohort (n=50) did not view the video...
September 2015: Journal of Dental Education
Sophie Doméjean, Stéphanie Léger, Marie Maltrait, Ivar Espelid, Anne B Tveit, Stéphanie Tubert-Jeannin
A survey conducted in 2002 among French general dental practitioners (GPs) showed variations between treatment decisions and a tendency towards early restorative intervention for caries. The aims of the present questionnaire survey were to investigate, among a random sample of 2,000 French GPs, the management decisions for occlusal lesions in 2012 and to compare the results to those obtained in 2002. The response rate was 41.9%. The majority of the respondents (60.7%) would postpone their restorative decisions until the lesion was in the dentin, based on clinical and radiographic examinations...
2015: Caries Research
Michael Naumann, Klaus W Neuhaus, Manja Kölpin, Rainer Seemann
OBJECTIVE: The purpose of this study was to assess current opinions, applied techniques, and materials for the restoration of endodontically treated teeth (ETT) in a nationwide survey in Germany. MATERIAL AND METHODS: Completed questionnaires from 1,648 dentists were returned (response rate 63%). RESULTS: In general, posts were reported to be used more frequently (51%) for indirect restorations than for direct restorations (21%). Dentists restored anterior teeth (65%) more frequently with direct restorations than posterior teeth (48%)...
March 2016: Clinical Oral Investigations
Igor R Blum
OBJECTIVE: To investigate the impact of repair vs replacement of failed restorations on patient related outcome measures, and to explore the clinical factors that influence this decision. DESIGN: Multicentre, prospective practice-based study.Setting Dental practices within Salford, Trafford and East Lancashire in the North West of England. SUBJECTS AND METHODS: General dental practitioners were asked to participate and to recruit adult patients attending for routine dental treatment...
January 2015: British Dental Journal
M Laccabue, R L Ahlf, J W Simecek
STATEMENT OF PROBLEM: There are no recent data that describe the replacement rates of resin composite and dental amalgam restorations placed by US Navy dentists. Information is needed to provide the best possible care for our military personnel which would minimize the probability of dental emergencies, especially for those who are deployed. PURPOSE: The purpose of this study was to determine if the frequency of posterior restoration replacement in military personnel differed based on the type of restorative material utilized...
January 2014: Operative Dentistry
Alireza Eshghi, Mahdi Jafarzadeh Samani, Naghme Feyzi Najafi, Maryam Hajiahmadi
BACKGROUND: General anesthesia (GA) allows dental treatment to be rendered under optimal conditions, theoretically ensuring ideal outcomes. The aim of this study was to determine the efficacy of restorative dental procedures performed under GA. MATERIALS AND METHODS: In this cross-sectional retrospective study, 305 pediatric patients who had been treated under GA 6 to 24 months before our survey at Isfahan's hospitalized dentistry center were examined. The examination was performed on dental chair with oral mirror and dental probe...
July 2012: Dental Research Journal
N N Maserejian, R Hauser, M Tavares, F L Trachtenberg, P Shrader, S McKinlay
Resin-based composite dental restoration materials may release bisphenol-A, an endocrine-disrupting chemical. Using secondary analysis of a randomized clinical safety trial of amalgam vs. composites, we tested the hypothesis that dental restoration materials affect children's growth. Children (N = 218 boys, N = 256 girls) aged 6 to 10 yrs at baseline with ≥ 2 decayed posterior teeth were randomized to amalgam or composites (bisphenol-A-diglycidyl-dimethacrylate composite for permanent teeth, urethane-dimethacrylate compomer for primary teeth) for treatment of posterior caries throughout follow-up...
November 2012: Journal of Dental Research
Nancy N Maserejian, Felicia L Trachtenberg, Russ Hauser, Sonja McKinlay, Peter Shrader, Mary Tavares, David C Bellinger
BACKGROUND AND OBJECTIVE: Resin-based dental materials may intraorally release their chemical components and bisphenol A. The New England Children's Amalgam Trial found that children randomized to amalgam had better psychosocial outcomes than those assigned to composites for posterior tooth restorations. The objective of this study was to examine whether greater exposure to dental composites is associated with psychosocial problems in children. METHODS: Analysis of treatment-level data from the New England Children's Amalgam Trial, a 2-group randomized safety trial comparing amalgam with the treatment plan of bisphenol A-glycidyl methacrylate (bisGMA)-based composite and urethane dimethacrylate-based polyacid-modified composite (compomer), among 534 children aged 6 to 10 years at baseline...
August 2012: Pediatrics
N K Kuper, N J M Opdam, E M Bronkhorst, M C D N J M Huysmans
OBJECTIVES: To evaluate whether occlusoproximal restorations with cervical margins apical to the cemento-enamel junction (CEJ) are more prone to failure than restorations with margins coronal to the CEJ, in particular failure due to secondary caries. METHODS: A method was developed for scoring cervical margin extension on bitewings, and validated in vitro. Records from patients with at least one occlusoproximal restoration replaced due to secondary caries were selected from an existing database...
March 2012: Journal of Dentistry
Ulla Palotie, Miira M Vehkalahti
OBJECTIVE: This study aimed at evaluating dentists' perceived reasons for replacement of restorations and ascertaining the differences arising from dentists' gender, time since graduation and working sector (salaried vs private). MATERIALS AND METHODS: A postal questionnaire was sent to a total of 592 working-age general dental practitioners in Finland, 57% (n = 339) responded. The dentists were asked to rank in order of priority the six most common reasons for replacement of composite in the incisors and posterior teeth and amalgam in the posterior tooth from a list of 12 reasons...
December 2012: Acta Odontologica Scandinavica
Michele B Diniz, Luciana Monti Lima, George Eckert, Andrea G Ferreira Zandona, Rita C L Cordeiro, Lourdes Santos Pinto
This in vitro study evaluated the performance of visual (International Caries Detection and Assessment System [ICDAS]) and radiographic (bitewing [BW]) examinations for occlusal caries detection and their associations with treatment decision (TD). Permanent teeth (n=104) with occlusal surfaces varying from sound to cavitated were selected. Sites were identified from 10× occlusal surface photographs. Standardized bitewing (BW) radiographs were taken. Four dentists with at least five years of experience scored all teeth twice (one-week interval) for ICDAS (0–6), BW (0=sound, 1=caries restricted to enamel, 2=caries in outer third dentin, 3=caries in inner third dentin), and TD (0=no treatment, 1=sealant, 2=microabrasion and sealant, 3=round bur sealant, 4a=resin, 4b=amalgam)...
March 2011: Operative Dentistry
Juan-Ignacio Rosales-Leal, Victoria Olmedo-Gaya, Manuel Vallecillo-Capilla, Juan-de-Dios Luna-del Castillo
OBJECTIVES: To evaluate in vitro the effect of cavity preparation with microburs and diamond-coated ultrasonic tips on the microleakage and marginal fit of six end-root filling materials. STUDY DESIGN. The following materials were assessed: amalgam (Amalcap), zinc oxide eugenol (IRM), glass ionomer (Vitrebond), compomer (Cavalite), mineral particle aggregate (MTA) and composite (Clearfil). Cavity preparation was performed with microburs or diamond ultrasonic tips in single-root teeth...
March 2011: Medicina Oral, Patología Oral y Cirugía Bucal
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