Address for correspondence

Laboratory research in dentistry and dental education use extracted human teeth as a model for simulation for ex vivo procedures. Human-borne tissues are the first choice of material for bond strength assessment. To obtain comparable results in dental material tests and to ensure microbiological safety, specimens must be stored under specific, uniform conditions. The aim of this paper was to present the contemporary view and recommendations on preserving extracted human teeth. The antimicrobial properties of the storage medium are a crucial aspect, as extracted teeth pose a risk of cross-infection. A classification of different methods (using solutions and otherwise) is presented and their sterilizing efficiency is compared based on the literature. The emphasis is put on the interaction between the storage conditions and the substrate. Tooth specimens should be biologically safe and have normal mechanical properties. The sterilizing process must be neutral for the enamel and dentin microstructure, because even a minor change can affect the adhesive bonding. Autoclave sterilization and storage in 10% formalin solution are widespread and reliable methods, although they do have their disadvantages. There is a need for further investigation in order to establish uniform recommendations on preparing and preserving extracted human teeth used for research purposes.

[1]  J. Bruhn,et al.  The Doctor's Touch: Tactile Communication in the Doctor-Patient Relationship , 1978, Southern medical journal.

[2]  J S Goodwin,et al.  Physician behaviors that correlate with patient satisfaction. , 1982, Journal of medical education.

[3]  Moiz Mumtaz,et al.  Evaluation of Indoor Air Sampling Near Philip Services Corporation, Seattle, Health Consultation , 1992 .

[4]  D. Pashley,et al.  Sterilization of human teeth: its effect on permeability and bond strength. , 1993, American journal of dentistry.

[5]  G. Marshall,et al.  Sterilization of Teeth by Gamma Radiation , 1994, Journal of dental research.

[6]  R. White,et al.  Failure of ethylene oxide to sterilize extracted human teeth. , 1995, Dental materials : official publication of the Academy of Dental Materials.

[7]  D. Oakley,et al.  Psychological aspects of gastrointestinal endoscopy: a review. , 1996, Endoscopy.

[8]  M Shapira,et al.  Presence of family member during upper endoscopy. What do patients and escorts think? , 1996, Journal of clinical gastroenterology.

[9]  G W Marshall,et al.  Spectroscopic changes in human dentine exposed to various storage solutions--short term. , 1996, Journal of dentistry.

[10]  J. Dewald The use of extracted teeth for in vitro bonding studies: a review of infection control considerations. , 1997, Dental materials : official publication of the Academy of Dental Materials.

[11]  D. Pashley,et al.  Dentine permeability and dentine adhesion. , 1997, Journal of dentistry.

[12]  K. Titley,et al.  The effect of various storage methods and media on shear-bond strengths of dental composite resin to bovine dentine. , 1998, Archives of oral biology.

[13]  R. Walmsley,et al.  Factors affecting patient tolerance of upper gastrointestinal endoscopy. , 1998, Journal of clinical gastroenterology.

[14]  T. H. Wang,et al.  Worldwide use of sedation and analgesia for upper intestinal endoscopy. Sedation for upper GI endoscopy in Taiwan. , 1999, Gastrointestinal endoscopy.

[15]  M. Rué,et al.  Identification of factors that influence tolerance of upper gastrointestinal endoscopy. , 1999, European journal of gastroenterology & hepatology.

[16]  S. Y. Chuah,et al.  Common anxieties of patients undergoing oesophago-gastro-duodenoscopy, colonoscopy and endoscopic retrograde cholangio-pancreatography. , 1999, The Medical journal of Malaysia.

[17]  M. Imamura,et al.  Expression of stromal cell-derived factor 1 and CXCR4 ligand receptor system in pancreatic cancer: a possible role for tumor progression. , 2000, Clinical cancer research : an official journal of the American Association for Cancer Research.

[18]  L. Brandt Patients’ Attitudes And Apprehensions About Endoscopy: How To Calm Troubled Waters , 2001, American Journal of Gastroenterology.

[19]  J. Watson,et al.  Audit of sedated versus unsedated gastroscopy: Do patients notice a difference? , 2008 .

[20]  J P Scheetz,et al.  Disinfection/sterilization of extracted teeth for dental student use. , 2001, Journal of dental education.

[21]  M. Farthing,et al.  Factors associated with tolerance to, and discomfort with, unsedated diagnostic gastroscopy. , 2001, Scandinavian journal of gastroenterology.

[22]  F R Tay,et al.  Bonding to Er-YAG-laser-treated dentin. , 2002, Journal of dental research.

[23]  俊郎 黒木,et al.  Centers for Disease Control and Prevention (CDC) ホームページの活用法 , 2002 .

[24]  W. Rutala,et al.  Draft Guideline for Disinfection and Sterilization in Healthcare Facilities , 2002 .