Kavita Kumari, Sinha Rani Indira, Singh Revati, Singh Rohit, Reddy K R Parameshwar, Kulkarni Ganesh
Department of Dentistry, Nalanda Medical College and Hospital, Patna, Bihar, India.
Department of Pharmacology, Patna Medical College and Hospital, Patna, Bihar, India.
J Pharm Bioallied Sci. 2020 Aug;12(Suppl 1):S440-S443. doi: 10.4103/jpbs.JPBS_131_20. Epub 2020 Aug 28.
The aim of this study was to assess different gingival displacement systems such as aluminum chloride retraction cords, expasyl, and tetrahydrozoline-soaked retraction cord to record intracrevicular margins of tooth preparations.
This study included 60 patients. Patients were divided into four groups of 15 each. In group I, aluminum chloride retraction cords, in group II expasyl, in group III tetrahydrozoline-soaked retraction cord, and in group IV no retraction cord were used.
The mean gingival displacement (μm) in group I was 825.6, in group II was 482.1, in group III was 742.3, and in group IV was 214.8. Significant difference was seen in between groups by one-way analysis of variance as < 0.05. Post hoc Tukey analysis showed significant difference during multiple comparison between groups.
Authors found that maximum gingival retraction was achieved with aluminum chloride retraction cords followed by tetrahydrozoline and expasyl.
本研究旨在评估不同的牙龈退缩系统，如氯化铝收缩龈线、排龈膏和用四氢唑啉浸泡的收缩龈线，以记录牙体预备的龈沟内边缘。
本研究纳入60例患者。患者被分为四组，每组15人。第一组使用氯化铝收缩龈线，第二组使用排龈膏，第三组使用用四氢唑啉浸泡的收缩龈线，第四组不使用收缩龈线。
第一组的平均牙龈退缩量（μm）为825.6，第二组为482.1，第三组为742.3，第四组为214.8。通过单因素方差分析，组间差异显著，P<0.05。事后检验的Tukey分析显示，组间多重比较存在显著差异。
作者发现，使用氯化铝收缩龈线时牙龈退缩最大，其次是四氢唑啉和排龈膏。
