Ali Maha M M, Abdallah Ali Mena F, Bakr Noura M, Shendy Mennat Allah M, Saleh Wafik A, Diab Amany M, Algariah Ahmed K
Orthodontics, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, EGY.
Oral Biology, Faculty of Dental Medicine for Girls, AL-Azhar University, Cairo, EGY.
Cureus. 2024 Aug 14;16(8):e66909. doi: 10.7759/cureus.66909. eCollection 2024 Aug.
The current study evaluated the bracket bond strength of hypomineralized teeth with and without acid etching. Twenty premolar teeth extracted for orthodontic purposes were used in this study. Hypomineralization was induced in all experimental teeth using a cariogenic solution. Then the teeth were divided into two groups. In the first group, orthodontic brackets were bonded by orthodontic adhesive (Green Gloo, Ormco, USA) without etching, while in the second group, further etching was used before bonding. All specimens were examined for morphological changes in the enamel surface after demineralization and debonding using a scanning electron microscope. The shear bond strength was also measured, and the recorded values of bond strengths were collected and statistically analyzed. All massed results were statistically evaluated via an independent t-test to equate Group 1 (G1) and Group 2 (G2). A p-value of < 0.05 is deemed to be statistically substantial. The shear bond strength of groups interacted by orthodontic adhesive with etching (Group 2) was considerably greater than that of groups bonded by orthodontic adhesive without etching. The etching indicates considerably greater tackiness rates compared to bonding without etching, although it leaves more destructed cores, which may need further treatment.
本研究评估了酸蚀和未酸蚀的矿化不足牙齿的托槽粘结强度。本研究使用了20颗因正畸目的拔除的前磨牙。所有实验牙齿均使用致龋溶液诱导矿化不足。然后将牙齿分为两组。第一组，正畸托槽用正畸粘合剂（美国奥美科公司的Green Gloo）粘结，不进行酸蚀，而第二组在粘结前进行进一步酸蚀。使用扫描电子显微镜检查所有标本脱矿和脱粘后釉质表面的形态变化。还测量了剪切粘结强度，并收集记录的粘结强度值进行统计分析。所有汇总结果均通过独立t检验进行统计评估，以比较第1组（G1）和第2组（G2）。p值<0.05被认为具有统计学意义。经酸蚀后用正畸粘合剂粘结的组（第2组）的剪切粘结强度明显高于未经酸蚀用正畸粘合剂粘结的组。与未酸蚀粘结相比，酸蚀显示出明显更高的粘结率，尽管它会留下更多受损的核心，这可能需要进一步处理。
