Validity of Bite-Wings for Diagnosis of Secondary Caries in Teeth with Occlusal Amalgam Restorations in vitro

1993 ◽  
Vol 27 (4) ◽  
pp. 312-316 ◽  
Author(s):  
M.P. Rudolphy ◽  
J.P. van Amerongen ◽  
Ch. Penning ◽  
J.M. ten Cate
Keyword(s):  
Secondary Caries ◽  
Amalgam Restorations

Validity of Radiographs for Diagnosis of Secondary Caries in Teeth with Class II Amalgam Restorations in vitro

1997 ◽  
Vol 31 (1) ◽  
pp. 24-29 ◽  
Author(s):  
M.P. Rudolphy ◽  
Y. Gorter ◽  
C. van Loveren ◽  
J.P. van Amerongen
Keyword(s):  
Class Ii ◽  
Secondary Caries ◽  
Amalgam Restorations

Review of Fluoride Release and Secondary Caries Reduction by Fluoridating Composites

1995 ◽  
Vol 9 (4) ◽  
pp. 367-376 ◽  
Author(s):  
J. Arends ◽  
G.E.H.M. Dijkman ◽  
A.G. Dijkman
Keyword(s):  
Major Part ◽  
Fluoride Release ◽  
Weak Spot ◽  
Secondary Caries ◽  
Hard Tissues ◽  
Interfacial Gap ◽  
Amalgam Restorations

Secondary caries is one of the main reasons to replace restorations. Due to the pressure to eliminate or reduce the number of amalgam restorations in many countries, fluoride-releasing composites have gained in importance. This review limits itself to information relevant to secondary caries near fluoride-releasing anterior or posterior composites. Although many parameters are very important in composite functioning, a weak spot near a filling is always the interface and the locally present interfacial gap between the composite and the hard tissues, where secondary caries takes place due to plaque action. Relevant parameters such as the amount of fluoride released in vitro in μg.cm-2, the rate of fluoride release, and the period of fluoride release are compared for several composites. In vitro F release has been measured for some fluoridating composites for more than five years. Unfortunately, F release in vivo or in situ cannot be measured adequately. The fluoride released by the composites considered is partly taken up by the surrounding tissues, partly released to the saliva, and partly efficacious in possible marginal gaps and defects. A major part of this paper pertains to in vitro, in situ, and in vivo secondary caries reduction experiments. In vitro caries reductions in the order of 40% from F-releasing composites vs. controls have been found. In in situ model investigations under plaque and saliva conditions, secondary caries reduction percentages of between 40 and 50% have been experimentally measured in gaps in enamel near F composites.

scholarly journals Validity of staining and marginal ditching as criteria for diagnosis of secondary caries around occlusal amalgam restorations: an in vitro study

2009 ◽  
Vol 20 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Claudia Silami Magalhães ◽  
Amanda Beatriz Dahdah Aniceto de Freitas ◽  
Allyson Nogueira Moreira ◽  
Efigênia Ferreira Ferreira
Keyword(s):  
Evaluation Criteria ◽  
In Vitro Study ◽  
Likelihood Ratios ◽  
Human Teeth ◽  
Secondary Caries ◽  
Predictive Values ◽  
Criteria For Diagnosis ◽  
Low Sensitivity ◽  
Amalgam Restorations

This study determined the validity of marginal ditching and staining as criteria for the diagnosis of secondary caries around amalgam restorations. One hundred and twenty-four Class I amalgam restorations on extracted human teeth were submitted to standardized clinical examinations. A calibrated examiner recorded the presence of ditching in the tooth/restoration interface, the occurrence of bluish-grey staining on the occlusal surface, and their relationship with the presence and severity of secondary carious lesions. Examinations were repeated after 4 days to calculate the intra-examiner reliability. Stereomicroscopic inspection of the serial tooth sections was used as the gold-standard. Six teeth were lost during the study. Of the 118 remaining teeth, 19 (16%) showed occlusal bluish-grey staining and 26 showed more than 0.20 mm wide marginal ditches. Of the latter, 14 presented narrow ditches (0.20-0.45 mm), while 12 presented wide ditches (0.45 mm). The evaluation criteria presented low sensitivity and positive predictive values. Positive and negative likelihood ratios showed that the criteria exhibited, indistinctly, the same odds to determine a positive or negative result for a diseased or healthy tooth. It was concluded that marginal ditching and staining were not valid criteria for the diagnosis of secondary caries around occlusal amalgam restorations.

Deterioration of Restorative Materials and the Risk for Secondary Caries

1990 ◽  
Vol 4 (1) ◽  
pp. 14-18 ◽  
Author(s):  
A.J. Goldberg
Keyword(s):  
Background Information ◽  
Material Failure ◽  
Gap Size ◽  
Secondary Caries ◽  
Factors Influencing ◽  
Clinical Investigations ◽  
Amalgam Restorations ◽  
Improved Methods ◽  
Recent Laboratory

This article reviews the literature related to marginal deterioration of amalgam restorations and the risk for secondary caries. Background information on this characteristic material failure is provided, including how it is measured clinically, its rate of progress with time, and the responsible microstructural mechanisms. The association between degree of marginal fracture and recurrent or secondary caries is reviewed in clinical and in vitro studies. Earlier clinical investigations and a more recent laboratory study demonstrated a strong correlation between gap size and recurrent caries for a caries-active environment, supporting replacement of defective restorations for preventive reasons. However, more recent clinical data show the complex and equivocal nature of this association. Poor specificity and validity for detection of recurrent caries with an explorer and mirror further complicate interpretation of some trials and decision-making in clinical practice. Improved methods of diagnosing recurrent caries and further studies of the factors influencing its initiation and progression are needed.

Grey Discolouration and Marginal Fracture for the Diagnosis of Secondary Caries in Molars with Occlusal Amalgam Restorations: An in Vitro Study

1995 ◽  
Vol 29 (5) ◽  
pp. 371-376 ◽  
Author(s):  
M.P. Rudolphy ◽  
J.P. van Amerongen ◽  
Ch. Penning ◽  
J.M. ten Cate
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Secondary Caries ◽  
Amalgam Restorations

Influence of biofilm removal from the tooth-restoration interface on the progression of secondary caries lesions: a preliminary in vitro model study

Biofouling ◽  
2021 ◽  
pp. 1-12
Author(s):  
Cácia Signori ◽  
Tamires Timm Maske ◽  
Vitor Henrique Digmayer Romero ◽  
Maximiliano Sérgio Cenci
Keyword(s):  
In Vitro Model ◽  
Secondary Caries ◽  
Model Study ◽  
Biofilm Removal ◽  
Vitro Model ◽  
Caries Lesions

scholarly journals In Vitro Detection of Caries Around Amalgam Restorations Using Four Different Modalities

2017 ◽  
Vol 11 (1) ◽  
pp. 609-620 ◽  
Author(s):  
Tamara E. Abrams ◽  
Stephen H. Abrams ◽  
Koneswaran S. Sivagurunathan ◽  
Josh D. Silvertown ◽  
Warren M.P. Hellen ◽  
...  
Keyword(s):  
Fluorescence Spectra ◽  
Visual Inspection ◽  
Laser Fluorescence ◽  
Amalgam Restoration ◽  
Icdas Ii ◽  
Sensitivity Specificity ◽  
Natural Decay ◽  
Amalgam Restorations ◽  
Carious Teeth

Objective:The aim of this study was to evaluate the ability of PTR-LUM (The Canary System, CS), laser fluorescence (DIAGNOdent, DD), LED fluorescence (Spectra), and visual inspection (ICDAS II) to detect natural decay around bonded amalgam restorationsin vitro.Methods:Seventeen extracted human molars and premolars, consisting of visually healthy (n=5) and natural cavitated (n=12) teeth were selected. For the carious teeth, caries was removed leaving some decayed tissue on the floor and or wall of the preparation. For sound teeth, 3 mm. deep cavity preparations were made and teeth were restored with bonded-amalgam restorations. Thirty-six sites (13 sound sites; 23 carious sites) were selected. CS and DD scans were performed in triplicate at 2, 1.5, 0.5, and 0 mm away from the margin of the restoration (MOR). Spectra images were captured for the entire surface, and dentists blinded to the samples provided ICDAS II scoring.Results:Canary Numbers (Mean±SE) for healthy and carious sites at 2, 1.5, 0.5, and 0 mm from the MOR ranged from 12.9±0.9 to 15.4±0.9 and 56.1±4.0 to 56.3±2.0, respectively. DD peak values for healthy and carious sites ranged from 4.7±0.5 to 13.5±2.99, and 16.7±3.7 to 24.5±4.4, respectively. For CS and DD, sensitivity/specificity for sites at 2.0, 1.5, 0.5, 0 mm ranged from 0.95-1.0/0.85-1.0, and 0.45-0.74/0.54-1.0, respectively. For ICDAS II, sensitivity and specificity were 1.0 and 0.17, respectively. For Spectra, data and images were inconclusive due to signal intereference from the amalgam restoration.Conclusions:Using thisin-vitromodel, CS and DD were able to differentiate between sound and carious tissue at the MOR, but larger variation, less reliability, and poorer accuracy was observed for DD. Therefore, CS has the potential to detect secondary caries around amalgam restorations more accurately than the other investigated modalities.

In Vitro Bond Strengths of Amalgam Added to Existing Amalgams

2010 ◽  
Vol 35 (3) ◽  
pp. 314-323 ◽  
Author(s):  
C. L. Roggenkamp ◽  
F. A. Berry ◽  
H. Lu
Keyword(s):  
Clinical Relevance ◽  
Bond Strengths ◽  
Original Strength ◽  
Amalgam Restorations

Clinical Relevance Freshly mixed amalgam added to existing amalgam restorations as a means of repair and allowed to set completely may be expected to join with nearly original strength, if sufficient condensation time and pressure are used.

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