PDF(Pubmed)
Abstract：
Dental microwear is used to investigate feeding ecology. Animals ingest geological material in addition to food. The full effect of geological abrasives on tooth wear is unknown. To evaluate mineralogical abrasives as tooth wear agents, rats were fed food manufactured with quartz silt, diatomaceous earth, and calcium carbonate. Rats were assigned to treatments and fed for 15 days. Molars were scanned with a Sensofar Plu Neox confocal microscope and evaluated using ISO-25178-2 parameters and traditional microwear variables using light microscopy. Using a pellet-diet as the control, all treatments had influence on microwear and discriminant function analyses indicated that unique surface textures had been produced. ISO variables with high discriminatory values were correlated to scratch and pit frequencies, but more ISO parameters identified changes associated with numbers of scratches than changes associated with pits. The microwear changes associated with the abrasive inclusions were co-dependent on the type of diet that the abrasives had been added to. The abrasives had less effect with pellets but produced more modified and more differentiated microwear when added to the transgenic dough. Although abrasives produce distinctive surface textures, some knowledge of the properties of food with the abrasives is needed to identify the abrasive agent.
摘要：
牙科微磨损用于研究喂养生态。动物除了食物外还摄取地质材料。地质磨料对牙齿磨损的全部影响尚不清楚。为了评估矿物磨料作为牙齿磨损剂，老鼠被喂食用石英粉制成的食物，硅藻土,和碳酸钙。将大鼠分配给治疗并喂养15天。用SensofarPluNeox共聚焦显微镜扫描磨牙，并使用ISO-25178-2参数和传统的微磨损变量使用光学显微镜进行评估。使用颗粒饮食作为对照，所有处理都对微磨损有影响，判别函数分析表明已经产生了独特的表面纹理。具有高判别值的ISO变量与划痕和凹坑频率相关，但更多的ISO参数识别出与划痕数量相关的变化，而不是与凹坑相关的变化。与磨料夹杂物相关的微磨损变化共同取决于添加了磨料的饮食类型。研磨剂对颗粒的影响较小，但添加到转基因面团中时会产生更多的改性和差异化的微磨损。虽然磨料产生独特的表面纹理，需要对磨料食品的特性有一定的了解才能识别磨料。
