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

scholarly journals In vitro evaluation of marginal microleakage of class II bonded amalgam restorations using a dentin adhesive and a glass ionomer cement

1999 ◽  
Vol 13 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Edmêr Silvestre PEREIRA JÚNIOR ◽  
Maria Francisca Thereza Borro BIJELLA ◽  
Salete Moura Bonifácio da SILVA ◽  
Bernardo Gonzales VONO
Keyword(s):  
Tap Water ◽  
Glass Ionomer Cement ◽  
Class Ii ◽  
Control Group ◽  
Distilled Water ◽  
Glass Ionomer ◽  
Bonding System ◽  
Amalgam Restorations ◽  
Ionomer Cement

The purpose of this study was to evaluate in vitro the effectiveness of the dentin bonding system All Bond 2 associated with Resinomer (Bisco), and of Vitrebond (3M) glass ionomer cement fresh-mixed, both used in the bonded amalgam technique, to prevent short-term microleakage in class II cavities restored with Dispersalloy (Dentsply), an admixed alloy. The control group utilized the Copalite (Cooley & Cooley) varnish. Forty five sound human extracted premolars were used. Class II cavity preparations were made on the mesial and distal surfaces of non-carious teeth, with the gingival margins wall established 1mm under the cementum enamel junction. The specimens were divided randomly into three groups with thirty cavities in each group. The teeth were stored in distilled water for 24 hours and were thermocyled through 500 cycles in distilled water between 5°C and 55°C with a dwell time of 15 seconds. The apices and roots of the teeth were sealed. They were placed in a 37°C bath of 0.5% basic fuchsin dye for 24 hours. The teeth were washed in tap water for 24 hours and cut. The microleakage scores per restoration were averaged and three values of various test groups were subjected to the Kruskal-Wallis and Dunn test at a significance level of p < 0.05. The All Bond 2/Resinomer showed significantly less microleakage at gingival margins than the Vitrebond and Copalite lined to amalgam restorations. The Vitrebond fresh mixed, lined to amalgam restorations, showed significantly less microleakage than the Copalite lined to 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.

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

The influence of resin composite and bonded amalgam restorations on dentine permeability in Class II cavities in vitro

2001 ◽  
Vol 17 (6) ◽  
pp. 477-484 ◽  
Author(s):  
Ahmet R. Özok ◽  
Anton J. De Gee ◽  
Min-Kai Wu ◽  
Paul R. Wesselink
Keyword(s):  
Resin Composite ◽  
Class Ii ◽  
Amalgam Restorations

scholarly journals Influence of different bonding agents on marginal sealing quality of amalgam restorations

2011 ◽  
Vol 139 (11-12) ◽  
pp. 722-727 ◽  
Author(s):  
Ankica Jakovljevic ◽  
Dragana Pesic ◽  
Milica Popovic ◽  
Irena Melih
Keyword(s):  
Gentian Violet ◽  
Class Ii ◽  
Bonding Agent ◽  
Bonding Agents ◽  
Dye Penetration ◽  
Group I ◽  
Significant Difference ◽  
Amalgam Restorations

Introduction. Although advanced adhesive systems are in use, marginal microleakage is one of the greatest problems of contemporary restorative dentistry. Objective. The aim of this in vitro study was to evaluate the influence of different bonding agents on the marginal sealing quality of class II amalgam restorations. Methods. Forty freshly extracted human premolar and molar teeth were divided into four groups with 10 teeth in each one. Class II preparations were prepared and different adhesives were applied as follows: group I - Amalgam Liner? (Voco); group II - ONE-STEP? PLUS (Bisco); group III - PQ 1 (Ultradent). Group IV was used as a control, without any bonding agent. Amalgam (Cavex Non Gamma 2, Cavex) was hand-condensed into each preparation. Specimens were thermocycled 200 times at the following temperatures: 5-7?C, 37?C and 57-59?C, and were then immersed into 1% solution of gentian violet for 72 hours. The teeth were sectioned longitudinally and microleakage was graded in the area of the gingival and occlusal quantity rim using a binocular magnifying glass with 25 times magnification. Results. The highest microleakage was recorded in the Amalgam Liner group; 1526.0 ?m at the gingival wall and 694.5 ?m at the occlusal cavity wall. The lowest dye penetration was observed in the PQ1 group; 589.5 ?m at the gingival wall, and 599.9 ?m at the occlusal wall of the restoration. ANOVA test showed that there was a statistically significant difference of dye penetration values at the gingival wall among all examination groups (p<0.01). No statistically significant differences were found comparing microleakage values at the occlusal wall. Conclusion. Results of this study showed that the best marginal sealing was accomplished by using the PQ1 bonding agent.

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