Schnabl Dagmar, Dudasne-Orosz Viktoria, Glueckert Rudolf, Handschuh Stephan, Kapferer-Seebacher Ines, Dumfahrt Herbert
University Hospital of Dental Prosthetics and Restorative Dentistry, Medical University of Innsbruck, Innsbruck, Austria.
Department of Otorhinolaryngology, Medical University of Innsbruck, Innsbruck, Austria.
Int J Clin Pediatr Dent. 2019 Mar-Apr;12(2):126-132. doi: 10.5005/jp-journals-10005-1609.
The aim of this study is to investigate the penetration abilities of a commercially available low-viscosity resin infiltrant into developmentally hypomineralized teeth .
Four extracted third molars of a 17-year-old patient with signs of developmental enamel hypomineralization (discoloration, increased opacity, and surface roughness) were infiltrated with a low-viscosity resin mixed with a fluorescent dye, according to the manufacturer's standard protocol. Four extracted molars with sound enamel or showing only initial fissure caries were used as a control group. Specimens were embedded in polymethylmethacrylate, and grindings were prepared. High-resolution projectional radiography of the grindings was performed, and, for one specimen, quantitative micro-computed tomography was used to measure hydroxyapatite density in enamel and dentin lesions. After decalcification, the grindings were examined by reflected bright-field microscopy, wide-field fluorescence microscopy, and confocal laser scanning microscopy. Fluorescence micrographs were superimposed on the radiographs and analyzed correlatively.
The pattern of hypo-/demineralization in enamel and dentin in developmentally hypomineralized teeth showed a good congruence with the pattern of resin infiltration. Cavitations and dentin tubules up to a depth of 2 mm beyond cavitations were filled by the infiltrant. In control teeth, the penetration of the infiltrant was limited to decalcified enamel areas (initial fissure caries).
infiltration of developmentally hypomineralized enamel was successful.
Resin infiltration might be considered as a routine procedure in the treatment of developmentally hypomineralized teeth. Further investigations with higher sample sizes, different degrees of severity, different stages of lesion extension, and modified treatment protocols are necessary.
Schnabl D, Dudasne-Orosz V, Testing the Clinical Applicability of Resin Infiltration of Developmental Enamel Hypomineralization Lesions Using an Model. Int J Clin Pediatr Dent 2019;12(2):126-132.
本研究旨在探讨一种市售低粘度树脂浸润剂对发育性矿化不足牙齿的渗透能力。
按照制造商的标准方案，用与荧光染料混合的低粘度树脂对一名17岁患者的四颗有釉质发育矿化不足迹象（变色、透明度增加和表面粗糙）的拔除第三磨牙进行浸润处理。四颗釉质完好或仅显示初期窝沟龋的拔除磨牙用作对照组。将标本嵌入聚甲基丙烯酸甲酯中，制备磨片。对磨片进行高分辨率投影放射摄影，对于一个标本，使用定量微型计算机断层扫描测量釉质和牙本质病变中的羟基磷灰石密度。脱钙后，通过反射明场显微镜、宽场荧光显微镜和共聚焦激光扫描显微镜对磨片进行检查。将荧光显微照片叠加在放射照片上并进行相关分析。
发育性矿化不足牙齿的釉质和牙本质中的矿化不足/脱矿模式与树脂浸润模式具有良好的一致性。空洞以及空洞外深度达2毫米的牙本质小管被浸润剂填充。在对照牙齿中，浸润剂的渗透仅限于脱钙的釉质区域（初期窝沟龋）。
发育性矿化不足的釉质浸润成功。
树脂浸润可被视为治疗发育性矿化不足牙齿的常规程序。有必要进行更大样本量、不同严重程度、不同病变扩展阶段以及改良治疗方案的进一步研究。
施纳布尔D，杜达斯内 - 奥罗斯V，使用 模型测试发育性釉质矿化不足病变树脂浸润的临床适用性。《国际临床儿科牙科学杂志》2019年；12(2):126 - 132。
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