Amalgam and Composite Posterior Restorations: Curriculum Versus Practice in Operative Dentistry at a US Dental School

Ottenga, Marc; Mjör, Ivar A.

doi:10.2341/06-134

Cited by 26 publications

(28 citation statements)

References 11 publications

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“…One explanation may be that placing composite fillings is more operator sensitive than amalgam fillings and that most of the GPs are more familiar with amalgam than with composite materials. In a study by Ottenga and Mjör [2007], the number of preclinical lectures and laboratory sessions that was spent teaching the preparation and placement of amalgam and resin com-posite was recorded. These data were compared to the use of both materials in the operative clinic by third-and fourth-year students.…”

Section: Discussionmentioning

confidence: 99%

Prevalence and Incidence of Caries Lesions in Relation to Placement and Replacement of Fillings: A Longitudinal Observational Radiographic Study of an Adult Danish Population

Kirkevang¹,

Væth²,

Wenzel³

2009

Caries Res

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The aim was to describe the prevalence and incidence of caries lesions in relation to the placement and replacement of amalgam and non-metal fillings in a randomly selected adult Danish population. In 1997 and in 2003, 470 individuals underwent a full-mouth radiographic survey. All recordings were based on radiographs. A total of 12,361 teeth were examined. Registrations were performed on surfaces: mesial, distal and occlusal or incisal. In 1997 the total number of teeth and the number of unfilled teeth per individual decreased with the age of the individual, whereas the number of caries lesions per individual did not vary systematically with age. In each age group approximately 50% of the individuals had no caries lesions. In 1997 approximately 70% of the filled surfaces were filled with amalgam and 30% with non-metal filling materials. In 2003 60% of the surfaces were amalgam-filled and 40% were non-metal-filled. Overall non-metal filling material was more frequently used than amalgam in both treatments and re-treatments. During the observation period approximately 20% of both amalgam and non-metal-filled surfaces were re-treated. For amalgam fillings this was constant across the tooth groups, but for non-metal fillings the percentage of re-treated surfaces was larger for molars. The percentage of teeth with caries increased from front teeth to posterior teeth. The lowest percentage of surfaces with caries was detected in unfilled surfaces, and the highest in non-metal-filled surfaces. The results from the present study suggest the need for reflection and diligence when using non-metal materials for dental fillings especially in relation to molars.

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Section: Discussionmentioning

confidence: 99%

Prevalence and Incidence of Caries Lesions in Relation to Placement and Replacement of Fillings: A Longitudinal Observational Radiographic Study of an Adult Danish Population

Kirkevang¹,

Væth²,

Wenzel³

2009

Caries Res

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“…However, it has been found that the indications, contraindications and techniques taught for posterior composite restorations vary widely among dental schools [7] .…”

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confidence: 99%

Clinical Evaluation of Posterior Resin Composite Restorations Placed by Dental Students of Kuwait University

Al-Samhan

Alenezi²,

Alomari³

2010

Med Princ Pract

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Objective: To investigate the survival rate over a 3-year period of posterior resin composite restorations placed by dental students of Kuwait University. Materials andMethods: Posterior resin composite restorations placed by 5th-, 6th- and 7th-year dental students between 2004 and 2005 were evaluated. All patients with posterior composite restorations placed during this period of time were recalled. Of the 204 eligible patients, 139 attended the recall. 432 posterior resin composite restorations were evaluated clinically and radiographically according to the United States Public Health Service criteria. For each restoration, the survival time and/or reasons for failure were recorded. Descriptive statistics and logistic regression analysis were used to analyze the data at a statistically significant level of p < 0.05. Results: At 3 years, the survival rate of the restorations was 95.1%, resulting in an annual failure rate of 1.7%. Recurrent caries was the most common cause of failure (71.4%). Oral hygiene and gender and age of the patient were the factors that affected the failure rate of the restoration (p < 0.05). Other factors such as tooth type and location, type of cavity, type of liner used and level of the student who performed the procedure did not affect the failure rate (p > 0.05). Conclusion: Dental students of Kuwait University were able to place resin composite restorations in posterior teeth with a low annual failure rate. Recurrent caries was the most common cause of failure of posterior resin composite restorations. Oral hygiene was the most important factor in determining the survival of resin composite restorations.

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“…Composite resins have proven to be predictable and reliable restorative materials for the treatment of traumatized dentin or dental caries in the anterior region 3,4) . Recent longevity data on resin-based restorations have shown that the quality and longevity of these materials have increased 5) . Against this background, they have been suggested as substitutes for amalgam to restore posterior teeth because of these advantages: they offer improved esthetics and they do not contain mercury [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…Recent longevity data on resin-based restorations have shown that the quality and longevity of these materials have increased 5) . Against this background, they have been suggested as substitutes for amalgam to restore posterior teeth because of these advantages: they offer improved esthetics and they do not contain mercury [3][4][5] . On this note, it has been stated that 21 st century ultrafine compact-filled composite resins may be the materials of choice for restoring posterior cavities 2) .…”

Section: Introductionmentioning

confidence: 99%

Examination of composite resins with electron microscopy, microhardness tester and energy dispersive X-ray microanalyzer

Vilchis¹,

Hotta²,

Hotta³

et al. 2009

Dent. Mater. J.

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This study was conducted to examine the ultrastructures of eight recently improved light-cure restorative composite resins with scanning and transmission electron microscopes (SEM and TEM). Additionally, Vickers hardness, volume/weight fraction of filler, and chemical composition were analyzed. Composite resins selected for evaluation were Beautifil II, Clearfil AP-X, Clearfil Majesty, Estelite Σ, Filtek Supreme, Filtek Z250, Solare, and Synergy. SEM and TEM images revealed a great diversity in ultrastructure, and Vickers hardness test showed significant differences amongst all the composite resins (except between Clearfil Majesty and Estelite Σ, and between Filtek Supreme and Filtek Z250). By means of EDX, similar elements such as C, O, and Si were detected, but the concentration was different in every composite resin. Results obtained in this study served to validate that the methods employed in this study -SEM and TEM at high magnification -were useful in examining the ultrastructures of composite resins. It was also found that the ultrastructure, size of filler particles, volume/weight fraction of filler, and chemical composition of the composite resins had an effect on Vickers hardness. Given the great diversity of ultrastructures amongst the composite resins, which stemmed from the different revolutionary technologies used to manufacture them, further studies are warranted in the search of clinical applications that optimally match the differing properties of these materials.

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Amalgam and Composite Posterior Restorations: Curriculum Versus Practice in Operative Dentistry at a US Dental School

Cited by 26 publications

References 11 publications

Prevalence and Incidence of Caries Lesions in Relation to Placement and Replacement of Fillings: A Longitudinal Observational Radiographic Study of an Adult Danish Population

Prevalence and Incidence of Caries Lesions in Relation to Placement and Replacement of Fillings: A Longitudinal Observational Radiographic Study of an Adult Danish Population

Clinical Evaluation of Posterior Resin Composite Restorations Placed by Dental Students of Kuwait University

Examination of composite resins with electron microscopy, microhardness tester and energy dispersive X-ray microanalyzer

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