Results 301 to 310 of about 46,878 (351)

Study on the cytotoxicity of root canal filling materials

Journal of Endodontics, 1986
The purpose of this study was to evaluate the cytotoxicity in tissue cultures of six root canal sealers: Canals, Neodyne, FR, AH26, Tubli-Seal, and Nogenol. Nogenol showed mild cytotoxicity in 1-, 2-, and 3-wk test solutions at 1 and 2 days. Moderate cytotoxicity was observed in the 1- and 3-wk test solutions of Canals for all experimental days ...
Morris C.M. Yip, Fumio Sakakibara, Shinei Hirano, Hiroshi Nakamura, Kazuyoshi Sakai, Yasuaki Matsumoto, Hisaki Hayakawa   +6 more
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Impact of cross‐sectional root canal shape on filled canal volume and remaining root filling material after retreatment [PDF]

International Endodontic Journal, 2012
AbstractAimTo assess the impact of cross‐sectional root canal shape (CSRCS) on the canal volume that can be filled and the root filling material that remains following a subsequent retreatment procedure.MethodologyA total of 15 extracted two‐rooted human maxillary premolars and 15 mandibular first molars were used. Both root canals in the premolars (N =
Rechenberg, D-K, Paqué, F
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Biocompatibility Of Root Canal Filling Materials

Australian Endodontic Journal, 2001
Results of in vitro and in vivo studies clearly indicate that some endodontic sealers may cause local and systemic adverse effects. Though occasionally contradictory data has been reported from various authors, it may be concluded that zinc-oxide-eugenol sealers possess a marked cytotoxic and tissue-irritating potency.
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Sealing ability of a new root canal filling material

Journal of Endodontics, 1982
Summary An in vitro study was made to test the adaptation of a new material designed to be used with the pressure syringe. The study used the dye penetration technique, gutta-percha was used as a control material. It was found that the adaptation and sealing ability of both materials were the same for 1 day, 1 week, and 3 weeks.
Gary Wright, Sawsan R. Al. Rafei, F.S. Sayegh   +2 more
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The chilled silver cone as a root canal filling material

Oral Surgery, Oral Medicine, Oral Pathology, 1969
Abstract In an effort to improve the existing silver cone method of filling root canals, we have presented a chilled silver cone technique that relies on the malleability of silver, on silver's contraction and expansion with temperature change, and on the elasticity of dentine. A preliminary in vitro study was conducted on forty-two freshly extracted
Worth B. Gregory, Robert E. Cassidy
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Use of a hydrophilic plastic as a root canal filling material

Journal of Endodontics, 1976
Hydron was used as a filling material in the anterior teeth of monkeys. The material showed that at periods of 103 to 348 days there was, in the majority of cases, complete healing of both vital and pulpless cases; biocompatibility with tissue; complete filling of all irregularities; and calcification of excess material in the periapical areas.
Melvin Goldman, Herbert Rosen, David W. Rising, Joseph H. Kronman, Bernard H. Benkel, Lawrence B. Goldman   +5 more
openaire   +3 more sources

Physical properties of root canal filling materials

The Journal of the American Dental Association, 1955
The process o f calcification is depend­ ent on the formation of a protein mat­ rix. This matrix serves as the ground substance within which the mineral salts are deposited. The failure to calcify in these experiments appears to be largely the result of inadequate matrix synthesis.
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Influence of Different Root Canal–Filling Materials on the Mechanical Properties of Root Canal Dentin

Journal of Endodontics, 2007
The aims of this study were to compare Resilon (Resilon Research LLC, Madison, CT) in conjunction with either a bonding (Epiphany; Pentron Clinical Technologies, Wallingford, CT) or a nonbonding endodontic sealer (Pulp Canal Sealer; Kerr Corporation, Orange, CA) to EndoRez (Ultradent Products Inc, South Jordan, UT) and gutta-percha with regards to the ...
GRANDE, NICOLA MARIA, G. Plotino, L. Lavorgna, P. Ioppolo, R. Bedini, C. H. Pameijer, F. Somma   +6 more
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The Study of a New Injectable Root Canal Filling Material

Key Engineering Materials, 2005
The new-style injectable root canal filling material was prepared by hydroxyl apatite (HA), calcium hydroxide (Ca (OH) 2), iodoform (CHI3) and silicon oil. The material was injected into the isolate teeth to observe the sealing effect through marinating the isolate teeth in SBF and 1% methylblue solution.
Dayi Wu, Xiudong Yang, Hong Song Fan, Xing Dong Zhang, Li Zhao Teng   +4 more
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Effect of canal preparation and residual root filling material on root impedance

International Endodontic Journal, 2008
AbstractAim  To investigate the effect of root canal preparation and residual root filling material on the impedance characteristics of extracted human roots.Methodology  Thirty extracted, human single‐rooted teeth were mounted in a custom‐made apparatus that allowed strict temperature control.
Michael T. Flanagan, Yuan-Ling Ng, Kishor Gulabivala, A. Al‐bulushi, M. Levinkind   +4 more
openaire   +3 more sources