Effect of Frozen Storage and Boiling on Tensile Strength of Bovine Dentin

Abstract

Bovine teeth are used for dental research as a substitute for human teeth.In the present study, the effects of storage on the tensile strength of bovine dentin were investigated. Storage conditions selected were frozen storage for 1 week, 4 weeks, and 1 year. Boiling in water for 45 minutes was also employed to clarify the effect of heat.Dumbbell-shaped specimens were prepared from teeth of each condition and tensile tests were performed immediately.The same tests were also performed on specimens, as a control, prepared from bovine teeth within 8 hours of extraction.The tensile strength of the control was 76.1MPa; 1 week frozen storage, 78.7MPa; 4 weeks, 79.9MPa; 1 year, 79.0MPa. The tensile strength of bovine dentin remained unchanged during one year frozen storage. On the other hand, the tensile strength of bovine dentin after boiling was 70.3MPa, showing that tensile strength had decreased.

Influence of Nd:YAG Laser on the Bond Strength of Self-etching and Conventional Adhesive Systems to Dental Hard Tissues

“…The teeth were stored in distilled water and frozen at À188C until use, within a period of less than 28 days. 7 The roots were sectioned with a low-speed diamond saw, and the pulp was removed using endodontic instruments. An opening was made on the lingual side of the teeth to promote exposure of the pulp chamber.…”

Comparison of nanohardness between coronal and radicular intertubular dentin

“…Tensile strength of radicular dentin is greater than that of coronal dentin [5][6][7] . Tensile tests using dumbbell-shaped specimens are reportedly useful for identifying defects easily 5,[8][9][10][11][12] . The fracture surfaces ofcoronaldentinaredifferentfromthoseofradicular dentin as observed by scanning microscopy after tensile tests.…”

Tensile Strength and Durability of Bovine Dentin

“…The slabs were sectioned from an area of mid-coronal dentin, 2.4-3.4 mm from the tooth surface running parallel to the growth line (Fig. 1A) 21,22,[25][26][27] . A dentin slab was harvested from each tooth.…”

“…In this manner, uniformly shaped specimens were obtained. All surfaces of the central narrow portion were finished with 1200-grit wet silicon carbide paper under wet conditions [21][22][23][24][25][26][27] .…”