National Center for Geriatrics and Gerontology

Fukuoka University

Japan Health Sciences Foundation

Misako Nakashima

Koichiro Iohara

Katsuro Tachibana

Hiroshi Nakamura

Hideto Watanabe

Masahiko Sugiyama

Provided is a dental pretreatment material for dental tissue regeneration by use of dental pulp stem cells, particularly a dental pretreatment material effectively enabling dental tissue regeneration even by use of dental pulp stem cells of middle-aged or older individuals. The dental pretreatment material is characterized by comprising a serine protease, specifically trypsin. The dental pretreatment material comprising trypsin is used as an injection into a root canal before a root canal filling material comprising dental pulp stem cells and an extracellular matrix is inserted into the root canal as an attempt to regenerate a dental pulp and a dentin. The root canal filling material includes an ALK5 inhibitor, a CCR3 antagonist, or a CCL11 neutralizing antibody.

Dental pretreatment material and dental tissue regeneration kit

A root canal filling material for a tooth extraction or tooth non-extraction process can be used clinically because of its easy availability and can efficiently enhance dental tissue regeneration; a method for regenerating dental tissue using the filling material is also provided. A root canal filling materialincluding mesenchymal stem cellsexcluding dental pulp stem cells, which are inserted into the apical side of a root canal subjected to pulp extirpation or to root canal enlargement and cleaning of an infected root canal and including an extracellular matrixis provided, and a method for regenerating dental tissue, through a tooth extracting or tooth non-extracting process, including a step of injecting the root canal filling material into the apical side of a root canal of a non-extracted tooth subjected to pulp extirpation or to root canal enlargement and cleaning of an infected root canal is provided.

Root canal filling material containing mesenchymal stem cells and method for regenerating dental tissue using the same

Disclosed is a root canal filler for non-extracted tooth which causes no internal resorption or external resorption in a tooth with complete root formation, shows no odontoclast, and contributes to the regeneration of a dental tissue in which odontoblasts are smoothly aligned on the dentin wall. After pulpectomy or enlargement/cleaning of an infected root canal, a root canal filler for non-extracted tooth, which comprises tooth pulp stem cells and an extracellular matrix, is inserted into the apical side of the root canal of the non-extracted tooth. The tooth pulp stem cells may be, for example, dental pulp CXCR4-positive cells. It is preferred to attach, to the crown side of the root canal, migration factor(s) including at least one factor selected from among a cell migration factor, a cell proliferation factor, a neurotrophic factor and an angiogenic factor.

Unextracted tooth root canal filler and dental tissue regeneration method for unextracted tooth

A method of treatment for pulpitis and/or enhancement for dentinogenesis, includes using dental materials that include at least one of a protein having matrix metalloprotease 3 activities or matrix metalloprotease 3 precursor protein as an active ingredient. The dental materials can also contain a carrier having biocompatibility, and can contain at least one cell type among pulp cells, pulp stem cells, pulp progenitor cells, odontoblasts or cells that can differentiate into odontoblasts.

Method of treatment for pulpitis and/or enhancement for dentinogenesis

A dental ultrasonic drug delivery system capable of accurately cleaning the inside of root canals and killing bacteria in dentin tubules is provided. The dental ultrasonic drug delivery system delivers a drug to a target using an ultrasonic delivery device 800 . The drug is delivered in a mixed state with nanobubbles. A dental therapeutic probe for applying ultrasound is attached to the ultrasonic delivery device 800 . The dental therapeutic probe is selected from: (1) a root canal insertion probe 100 which is configured to be inserted into a root canal and causes ultrasound to propagate in the root canal; (2) a dental caries therapeutic probe which causes ultrasound to propagate in a dental caries portion; (3) a periodontal disease therapeutic probe which applies ultrasound to a periodontal disease portion; and (4) a hyperesthesia therapeutic probe which applies ultrasound to hyperesthesia portion.

Dental ultrasonic drug delivery system and dental ultrasonic drug delivery method

A material for treatment of cerebral infarction ameliorates angiopathy at a cerebral infarction region and improves brain function. The material for treatment of cerebral infarction according to the present invention comprises a dental pulp stem cell including at least one of a CD105-positive cell, an SP cell, a CD24-positive cell, a CD271-positive cell, and a CD150-positive cell. The material for treatment of cerebral infarction according to the present invention may contain a secretory protein of the dental pulp stem cell. Transplanted dental pulp stem cells do not directly differentiate into neural progenitor cells or neural cells and indirectly participate in the promotion of differentiation to restore and cure a cerebral infarction region such that the region becomes normal.

Brain tissue regeneration method

Provided is a novel and creative dental tissue regeneration method for regenerating dental tissue after pulpectomy or the enlargement and cleaning of an infected root canal. After pulpectomy or the enlargement and cleaning of an infected root canal, a root canal filler () having an extracellular matrix () containing the cells () enriched for dental pulp stem cells, is inserted into the apical side of the root canal of a target tooth (). The cells including dental pulp stem cells include at least one of the following: dental pulp SP cells, CD31-negative and CD146-negative cells, CD24-positive cells, CD105-positive cells, and CD150-positive cells. For instance, dental pulp SP cells are CD31and CD146negative. Even if pulpitis due to deep caries occurs, appropriate dental pulp regeneration and recovery of dental pulp function are possible.

Growing community of inventors

Obu, Japan

Misako Nakashima