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Difference of histology and elemental composition
of the cervical enamels among human permanent teeth |
| TAKAHASHI Masashi1, GOTO Shin-Ichi2, MORI Kazuhisa3, MATAGA Izumi3 |
| 1.Department of Dental Hygiene, The Nippon Dental University College at Niigata; 2.Department of Dental Material Science, School of Life Dentistry at Niigata, The Nippon Dental University; 3.Department of Oral Surgery, School of Life Dentistry at Niigata, The Nippon Dental University |
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Abstract The purpose of this study is to clarify the difference of histology and elemental composition of the cervical enamels among the human permanent teeth. The re-ground surfaces at the cervical enamels of them were observed under scanning electron microscopy (SEM). The contents of seven elements were analyzed quantitatively with electron probe microanalyzer (EPMA). The widths of the rod sections at the cervical enamels were larger than those at the cuspal enamels. The rod sections at the mesial cervical enamels in the incisors were more obscure and more decayed by acid solution than those in the premolars and molars. The calcium and phosphorus contents of the cervical enamels were significantly lower than those of the cuspal enamels. The carbon content of the cervical enamels was significantly higher than that of the cuspal enamels. The calcium and phosphorus contents of the cervical enamels were the significantly highest in the premolars. The carbon and sodium contents of the cervical enamels were significantly highest in the premolars. It is thought that the calcification level is lower, while the content of organic matter is higher at the cervical enamels than those at the cuspal enamels. It is considered that the sodium causes high calcification.
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Issue Date: 05 December 2008
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