Comparative radiopacity of tetracalcium phosphate and other root-end filling materials

Aim This study compared the radiopacity of tetracalcium phosphate (TTCP) and 11 root‐end filling materials relative to human dentine. Methodology Specimens of 2 mm thickness and a graduated aluminium stepwedge were placed on dental X‐ray films and exposed to an X‐ray beam. The optical densities of t...

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Bibliographic Details
Published in:International endodontic journal 2000-07, Vol.33 (4), p.311-315
Main Authors: Laghios, C. D., Benson, B. W., Gutmann, J. L., Cutler, C. W.
Format: Article
Language:English
Subjects:
Absorptiometry, Photon - methods
Aluminum - chemistry
Aluminum Compounds - chemistry
apicectomy
Bismuth - chemistry
Calcium Compounds - chemistry
Calcium Phosphates - chemistry
Contrast Media - chemistry
Dental Amalgam - chemistry
Dentin - diagnostic imaging
Dentistry
Drug Combinations
endodontics
Glass Ionomer Cements - chemistry
Gutta-Percha - chemistry
Humans
Maleates - chemistry
Oxides - chemistry
Polyvinyls - chemistry
Radiography, Dental
radiopacity
Regression Analysis
Retrograde Obturation - methods
Root Canal Filling Materials - chemistry
root-end filling
Silicates - chemistry
tetracalcium phosphate
Zinc Oxide - chemistry
Zinc Oxide-Eugenol Cement - chemistry
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Summary:Aim This study compared the radiopacity of tetracalcium phosphate (TTCP) and 11 root‐end filling materials relative to human dentine. Methodology Specimens of 2 mm thickness and a graduated aluminium stepwedge were placed on dental X‐ray films and exposed to an X‐ray beam. The optical densities of the specimens and aluminium steps were measured. The optical densities of the specimens were correlated to the equivalent thickness of aluminium with a regression analysis equation. The equation was used to calculate the equivalent aluminium thickness of each of the specimens. Results Nine of the materials were found to be of acceptable radiopacity (at least 2 mm Al more radiopaque than dentine). TCCP and two of the glass‐ionomer compounds were found to have insufficient radiopacity to be radiographically distinguishable from human dentine. Conclusions All the materials were found to be distinguishable radiographically from dentine, except for Vitrebond, TTCP and Ketac‐Fil. Amalgam was the most radiopaque material and Ketac‐Fil was the least radiopaque material tested.
ISSN:0143-2885
1365-2591
DOI:10.1046/j.1365-2591.2000.00281.x