■存在去除龋齿病变的不同方法,包括传统的旋转龋齿去除和新的先进技术,如聚合物基毛刺,化学机械制剂,空气磨损,和激光。
■这项研究显示了牙本质特征的差异(涂抹层,牙本质小管通畅,表面不规则,管间微孔,和暴露的牙本质小管)在不同类型的龋齿去除技术中。
■对60颗具有I类咬合活动性龋齿的初级磨牙进行了体外研究。根据龋齿去除方法将牙齿分为三组(G1:化学机械,G2:机械,有智能钻,和G3:空气磨损)。完成龋齿挖掘后,在扫描电子显微镜(SEM)下以4,000x和8,000x的放大倍数检查牙齿,以显示SEM显微照片的形态特征。使用SPSS程序分析获得的数据,其中Fisher精确,使用Kruskal-Wallis和多重Wilcoxon和秩检验。显著性水平是当p值小于0.05时。
■一般来说,SEM显示涂片层存在的得分1的最高比率,表面不规则,在两个放大倍数中,所有组的微孔性。小管的通畅性在放大倍数4,000倍时,G1中得分1,G2和G3中得分2的比率最高,而8,000x在G1和G2中得分1的比例最高,而G3得分2为最高分。暴露的牙本质小管在4,000倍的放大倍数中,在得分为3的G1中,在得分为2的G2中和在得分为1的G3中显示出最高的比率,而8,000x在G1和G3中得分2的比例最高,而G3得分1最高。放大倍数4,000x的研究显示,暴露的牙本质小管三组之间存在显着差异(S),p值(0.012),化学机械和智能之间有S,化学机械和空气擦伤组的p值(0.041,随后为0.001)。其他牙本质特征在两组之间或两组之间的放大倍数(4,000x,8,000x)。
■所有组均可有效去除龋齿,并能成功治疗年轻,害怕或紧张的病人。所有龋齿去除方法都会在残余牙本质中产生临床参数变化。
UNASSIGNED: Different methods for removing dental carious lesions exist, including conventional rotary caries removal and new advanced technology like polymer-based burs, chemomechanical agents, air abrasion, and laser.
UNASSIGNED: This study shows the differences in features of dentin (smear layer, patency of dentinal tubules, surface irregularities, intertubular micro porosities, and exposed dentinal tubules) among different types of caries removal techniques.
UNASSIGNED: An in vitro study was done on 60 primary molars with occlusal class I active caries. Teeth were divided into three groups according to a method of caries removal (G1: chemomechanical, G2: mechanical with a smart bur, and G3: air-abrasion). After complete caries excavation, the teeth were examined under a scanning electronic microscope (SEM) with the power of magnification 4,000x and 8,000x to show the morphological dentinal features with SEM microphotographs. Data obtained was analyzed using the SPSS program where Fisher exact, Kruskal-Wallis and multiple Wilcoxon sum rank tests were used. The level of significance is when the p-value is less than 0.05.
UNASSIGNED: Generally, SEM showed the highest ratio of score 1 of smear layer presence, surface irregularities, and microporosity in all groups in both magnifications. The patency of tubules showed the highest ratio of score 1 in G1, scores 2 in both G2 and G3 in magnification 4,000x, while 8,000x there was the highest ratio of its score 1 in G1 and G2 while the G3 has score 2 as the highest score. The exposed dentinal tubules showed the highest ratio in G1 in score 3, in G2 in score 2, and in G3 in score 1 in magnification 4,000x, while 8,000x there was the highest ratio of its score 2 in both G1 and G3 while the G3 has highest score 1. The study with magnification 4,000x showed a significant difference (S) among three groups in exposed dentinal tubules with a p-value (0.012), and there was S between chemomechanical and smart, chemomechanical and air-abrasions groups with a p-value (0.041, 0.001 subsequentially). Other dentin features showed non-significant differences (NS) among or between groups in both magnifications (4,000x, 8,000x).
UNASSIGNED: All groups were effective in removing caries and can successfully treat young, scared or stressed patients. All methods of caries removal produce clinically parametric changes in the residual dentin.