Md Riasat Hasan1,2, Hiroaki Takebe2, Nazmus Shalehin2, Nobuko Obara2, Takashi Saito1, Kazuharu Irie2. 1. Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-gun, Hokkaido, Japan. 2. Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Ishikari-gun, Hokkaido, Japan.
Abstract
BACKGROUND/AIMS: An easily available tooth storage medium is required to preserve a tooth after avulsion. Milk and Hank's balanced salt solution (HBSS) are recommended as tooth storage media, and egg white is also reported to be comparable with milk. The aim of this study was to histologically and immunohistochemically evaluate the effect of different tooth storage media on the periodontal ligament (PDL) of extracted teeth. MATERIALS AND METHODS: This experiment used HBSS, milk, and egg white as tooth storage media. A total of ninety-six 6-week-old male Sprague-Dawley rats were used in these experiments. In each experiment, six rats were used for each medium and for the control group. Extracted rat molar teeth were immersed in these three different storage media for 1 hour. In each medium, six samples (n=18) were fixed immediately, and the remaining samples (n=54) were subcutaneously transplanted. In the control group (n=24), the extracted teeth were fixed or transplanted immediately after extraction. At day 4, 1 and 2 weeks after transplantation, the teeth were examined by radiographic, histological, and immunohistochemical methods. The number of PDL cells in the storage media was also counted. RESULTS: Teeth immersed for 1 hour in milk showed the thinnest PDL. Immunohistochemistry of periostin and CD68 labeling suggested degradation of the extracellular matrix in the PDL. In the media used for immersion, more PDL cells were observed in milk than in the other solutions. After transplantation, the HBSS and egg white groups maintained adequate thickness of PDL but in the milk group, thinner PDL and ankylosis were observed. CONCLUSION: Adequate thickness of PDL was maintained in the egg white group, whereas the milk group showed disturbance in the PDL, which may lead to ankylosis.
BACKGROUND/AIMS: An easily available tooth storage medium is required to preserve a tooth after avulsion. Milk and Hank's balanced salt solution (HBSS) are recommended as tooth storage media, and egg white is also reported to be comparable with milk. The aim of this study was to histologically and immunohistochemically evaluate the effect of different tooth storage media on the periodontal ligament (PDL) of extracted teeth. MATERIALS AND METHODS: This experiment used HBSS, milk, and egg white as tooth storage media. A total of ninety-six 6-week-old male Sprague-Dawley rats were used in these experiments. In each experiment, six rats were used for each medium and for the control group. Extracted rat molar teeth were immersed in these three different storage media for 1 hour. In each medium, six samples (n=18) were fixed immediately, and the remaining samples (n=54) were subcutaneously transplanted. In the control group (n=24), the extracted teeth were fixed or transplanted immediately after extraction. At day 4, 1 and 2 weeks after transplantation, the teeth were examined by radiographic, histological, and immunohistochemical methods. The number of PDL cells in the storage media was also counted. RESULTS: Teeth immersed for 1 hour in milk showed the thinnest PDL. Immunohistochemistry of periostin and CD68 labeling suggested degradation of the extracellular matrix in the PDL. In the media used for immersion, more PDL cells were observed in milk than in the other solutions. After transplantation, the HBSS and egg white groups maintained adequate thickness of PDL but in the milk group, thinner PDL and ankylosis were observed. CONCLUSION: Adequate thickness of PDL was maintained in the egg white group, whereas the milk group showed disturbance in the PDL, which may lead to ankylosis.
Authors: Seyed Mehdi Hosseini; Reza Fekrazad; Hamid Malekzadeh; Parviz Farzadinia; Mohammadreza Hajiani Journal: J Family Med Prim Care Date: 2020-02-28
Authors: Ivan Salarić; Daniela Tikvica Medojević; Ksenija Baždarić; Josipa Kern; Ante Miličević; Petar Đanić; Josip Biočić; Darko Macan Journal: Acta Stomatol Croat Date: 2021-03