A STUDY ON THE TRANSFER OF RADIOACTIVE FLUORINE (18F) TO DENTAL HARD TISSUE

방사성(放射性) 불소(弗素)(18F)의 치아경조직내(齒牙硬組織內) 침투(浸透)에 관(關)한 실험적(實驗的) 연구(硏究)

  • Oh, An-Min (Dept. of Operative Dentistry, Graduate School, Seoul National University)
  • 오안민 (서울대학교 대학원 치의학과 보존학)
  • Published : 1976.12.31

Abstract

The author studied on the transfer of radioactive fluorine ($^{18}F$) to dental hard tissue through animal experiments which was divided into two groups. First group of rats were sacrified 1, 2, 5, 10 and 20 minutes after intraperitoneal injection. Second group were sacrified 1 and 3 minutes after topical application on anterior teeth. The teeth were removed and sectioned by means of abrasive wheel and polished on india stone as thick as about 50 microns. Autoradiograph picture was made by close contact of high-speed dental X-ray film on prepared specimen for 2 hours. The results of this study were as follows; 1) There was no evidence of transfer of $^{18}F$ on dental hard tissue on the cases of 1, 2 and 5 minutes survival after intraperitoneal injection. 2) Radioactive sodium fluorine incorporated to dental hard tissue was slight and diffuse at 10 minutes cases and significant incorporated picture was noticed at 20 minutes cases in intraperitoneal injection. 3) On topical application groups incorporated $^{18}F$ to enamel was traced clearly only on enamel surface at 1 minute cases and significant transfer into whole enamel was found at 3 minutes cases.

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