Saraswathi T R, Prasanth T
Department of Oral Pathology, Ragas Dental College & Hospital, #2/102, East Coast Road, Uthandi, Chennai-119, Tamilnadu, India.
Indian J Dent Res. 2003 Oct-Dec;14(4):259-63.
Clinical and histopathological evaluation of mechanical trauma on the development of maxillary first molar with Scanning Electron Microscope.
Experimental study with four newborn Wistar rats. Trauma induced on 1st, 3rd, 7th and 10th postnatal days with dental K file. Right first molar region of the maxilla was the experimental side and the left side as control. Animals were sacrificed on the 42nd Postnatal day when the teeth came into functional occlusion. Teeth were evaluated clinically and SEM study of the crown was performed.
Marked disfigurement of cusps, roughened defective, enamel, crown dilacerations and enamel hypoplasia were observed. Damage was less severe to the tooth subjected to trauma on the 10th postnatal day.
通过扫描电子显微镜对机械创伤对上颌第一磨牙发育的临床和组织病理学评估。
对四只新生Wistar大鼠进行的实验研究。在出生后第1天、第3天、第7天和第10天用牙科K锉诱导创伤。上颌右侧第一磨牙区域为实验侧，左侧为对照侧。在出生后第42天牙齿进入功能咬合时处死动物。对牙齿进行临床评估并对牙冠进行扫描电子显微镜研究。
观察到牙尖明显变形、釉质粗糙有缺陷、牙冠弯曲和釉质发育不全。出生后第10天受到创伤的牙齿损伤较轻。
