Ten-year in vitro assessment of the surface status of three retrofilling materials

Biggs, John T.; Benenati, Fred W.; Powell, Steven E.

doi:10.1016/s0099-2399(06)80526-1

Cited by 16 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of present study are in accordance with other studies that concluded that glass ionomer cement doesn't present good results when compared with other materials (30,31) . Xavier et al studied the marginal adaptation of MTA-Angelus, Super-EBA and Vitremer (32) .…”

Section: Discussionsupporting

confidence: 92%

Marginal Adaptation of a new Formulation of MTA Material used as Root-End Filling: A Scanning Electron Microscopy (SEM) Study

Elsherief

Rabie

Negm

2019

Egyptian Dental Journal

View full text Add to dashboard Cite

Introduction Achieving a hermetic apical seal is mandatory to prevent ingress of any microorganisms or periapical fluids into the root canal system. Therefore it is essential to develop new materials having favorable physical, chemical and biological properties.Aim the purpose of this study was to use scanning electron microscopy to compare the marginal adaptation of new formulation of MTA (Harvard MTA), MTA flow and glass ionomer as root end filling materials using ultrasonic root-end preparation.Methodology Thirty-nine extracted single rooted human teeth were prepared using Protaper Next file system (Dentsply/Sirona) and filled with gutta-percha and MTA fillapex sealer (MTA Fillapex; Angelus, Londrina, Brazil) and obturated using cold lateral compaction technique. The apical 3 mm of the roots were sectioned perpendicular to the long axis of the roots. A 3-mm depth root-end cavity was prepared with ultrasonic tips powered by an Enac ultrasonic device. The teeth were randomly allocated into three groups of 13 teeth each according to filling materials tested. Group I the samples were filled with Harvard MTA (Universal, Handmix, Germany, Harvard), Group II filled with MTA Flow (Ultradent Products Inc., South Jordan,UT, USA), group III filled with glass ionomer (Fuji II, GC gold label 2, GC International, Japan). Using SEM the distance between the tested materials and the surrounding dentin was measured at different points. ResultsAccording to the results of Kruskal-Wallis, there was significant difference between the three experimental groups at P value 0.01. The Man Whitney test was used for two-by-two comparison of the groups which revealed no statistical significant difference between MTA flow and MTA Harvard group however; there was statistically significant difference in Glass Ionomer group. Conclusion SEM resultsshowed the presence of gaps in the root-end filling materials in all groups. MTA flow has the best marginal adaptation followed by MTA Harvard while the Glass Ionomer showed the least marginal adaptation.

show abstract

Section: Discussionsupporting

confidence: 92%

Marginal Adaptation of a new Formulation of MTA Material used as Root-End Filling: A Scanning Electron Microscopy (SEM) Study

Elsherief

Rabie

Negm

2019

Egyptian Dental Journal

View full text Add to dashboard Cite

show abstract

“…33,34 Biggs et al wrote that EBA cement and amalgam rated better than Ketac cement in every category except root crazing and suggested that EBA cement might replace amalgam as the retrofill material of choice. 35 These composites had improved mechanical and biological properties, but their bone-bonding strength was not mentioned. Moreover, it was unclear whether they contained amorphous or ␣-alumina.…”

Section: Discussionmentioning

confidence: 99%

Bone-bonding behavior of alumina bead composite

Shinzato

Kobayashi

Choju

et al. 1999

J. Biomed. Mater. Res.

View full text Add to dashboard Cite

Previously we developed an alumina bead composite (ABC) consisting of alumina bead powder (AL-P) and bisphenol-alpha-glycidyl methacrylate (Bis-GMA)-based resin and reported its excellent osteoconductivity in rat tibiae. In the present study, are evaluated histologically and mechanically the effect of alumina crystallinity on the osteoconductivity and bone-bonding strength of the composite. AL-P was manufactured by fusing crushed alpha-alumina powder and quenching it. The AL-P was composed mainly of amorphous and delta-crystal phases of alumina. Its average particle size was 3.5 microm, and it took a spherical form. Another composite (alpha ALC), filled with pure alpha-alumina powder (alpha AL-P), was used as a referential material. The proportion of powder added to each composite was 70% w/w. Mechanical testing of ABC and alpha ALC indicated that they would be strong enough for use under weight-bearing conditions. The affinity indices for ABC, determined using male Wistar rat tibiae, were significantly higher than those for alpha ALC (p < 0.0001) up to 8 weeks. Composite plates (15 x 10 x 2 mm) that had an uncured surface layer on one side were made in situ in a rectangular mold. One of the plates was implanted into the proximal metaphysis of the tibia of a male Japanese white rabbit, and the failure load was measured by a detaching test 10 weeks after implantation. The failure loads for ABC on its uncured surface [1.91+/-1.23 kgf (n = 8)] were significantly higher than those for alpha ALC on its uncured surface [0.35+/-0.33 kgf (n = 8); (p < 0.0001)], and they also were significantly higher than those for ABC on the other (cured surface) side (p < 0.0001). Histological examinations using rabbit tibiae revealed bone ingrowth into the composite only on the uncured surface of ABC. This study revealed that the amorphous phase of alumina and formation of an uncured surface layer are needed for the osteoconductive and bone-bonding ability of ABC. ABC shows promise as a basis for the development of a highly osteoconductive and mechanically strong biomaterial.

show abstract

“…Formation of these reparative tissues probably occurred subsequent to a reduction in cytotoxicity of the surface layer. However, some reports have noted that the long-term efficacy of retrofilling is questionable 8) . Of the three materials examined in the present study, BL showed the highest suitability.…”

Section: Irm Irm Irmmentioning

confidence: 99%

Tissue Reactions After Intraosseous Implantation of Three Retrofilling Materials

Morinaga

Nakagawa

Carr³

2003

Bull. Tokyo Dent. Coll.

View full text Add to dashboard Cite

Bone tissue reactions to EBA, IRM, and cyanoacrylate cement (Base Liner) were studied in the rat mandible using an intraosseous implant method. Osseous cavities (1.4 mm in diameter) were surgically created in the mandibles, and materials were implanted in 60 male Wistar rats. Each specimen was evaluated histologically after 4 and 8 weeks. The development of fibrous connective tissue in direct apposition to the material was observed in the EBA and IRM groups at 4 weeks. A slight degree of macrophage infiltration was seen in the EBA group. After the 8-week observation period, IRM and EBA were frequently separated from the bone cavity by a fibrous connective tissue layer (pϽ0.01). The Base Liner appeared to be in direct apposition to the osseous tissue in several areas (pϽ0.01). These findings indicate that Base Liner reacts favorably with osseous tissue, compared with the EBA and IRM materials tested and seems to be a biocompatible material.

show abstract

Ten-year in vitro assessment of the surface status of three retrofilling materials

Cited by 16 publications

References 14 publications

Marginal Adaptation of a new Formulation of MTA Material used as Root-End Filling: A Scanning Electron Microscopy (SEM) Study

Marginal Adaptation of a new Formulation of MTA Material used as Root-End Filling: A Scanning Electron Microscopy (SEM) Study

Bone-bonding behavior of alumina bead composite

Tissue Reactions After Intraosseous Implantation of Three Retrofilling Materials

Contact Info

Product

Resources

About