Other

Lion Hamigaki Kabushiki Kaisha

Mitsuharu Takeuchi

Satoshi Hayashi

Akira Otsuki

Isao Minemoto

A filler for an .alpha.-cyanoacrylate dental material comprising a silica powder coated with at least one solid catalyst having a weak catalytic activity to the .alpha.-cyanoacrylate. Solid catalysts include amino acids and acid-amide compounds. The dental material is prepared by mixing an .alpha.-cyanoacrylate with the filler. The mixture is applied to the tooth and a setter composition comprising a basic amine compound having a strong catalytic activity to the .alpha.-cyanoacrylate is applied to cure the dental material.

.alpha.-Cyanoacrylate dental material and method of preparation

An adhesive pit and fissure sealant for tooth surfaces which consists of a first material of a lower alkyl .alpha.-cyanoacrylate and ultra-microfine particles of silicon dioxide, a second material of a di-lower-alkylformamide and a third material of a hardening promoter.

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Ichikawa, Ichikawa-shi, Chiba-ken, Japan

Mitsuharu Takeuchi