Poornima Rajendran, Meena Anand Kukkamalla, Pratibha G
Gen Dent. 2019 Jul-Aug;67(4):75-77.
The aim of this study was to examine the surface roughness produced by root debridement during periodontal maintenance therapy. The root surface roughness produced by hand scaling and subsequent glycine powder air polishing (GPAP) was compared with that produced by ultrasonic scaling and subsequent GPAP. Fifty extracted incisor and premolar teeth were collected and randomly allocated to the following 5 groups (n = 10 per group): 1, hand scaling followed by GPAP; 2, ultrasonic scaling followed by GPAP; 3, hand scaling alone; 4, ultrasonic scaling alone; and 5, no treatment. After the initial scaling procedure, specimens in groups 1 and 2 were incubated at 37°C for 3 days. The specimens then underwent GPAP for 5 seconds. All specimens were examined under a profilometer, and the root surface roughness was measured in micrometers. The specimens in groups 1 (hand scaling with GPAP) and 2 (ultrasonic scaling with GPAP) were studied in detail under a scanning electron microscope. The different protocols produced the following mean root surface roughness values: group 1, 2.31 µm; group 2, 4.33 µm; group 3, 5.84 µm; group 4, 6.32 µm; and group 5, 9.20 µm. The difference between groups 1 and 2 was statistically significant (P < 0.05). In this in vitro study, hand scaling with curettes produced smoother root surfaces than ultrasonic scaling. Adjunctive use of GPAP for 5 seconds along with hand scaling or ultrasonic scaling resulted in improved root surface smoothness during periodontal maintenance therapy.
本研究的目的是检查牙周维护治疗期间根面清创所产生的表面粗糙度。将手工洁治及后续甘氨酸粉末空气抛光（GPAP）所产生的根面粗糙度与超声洁治及后续GPAP所产生的根面粗糙度进行比较。收集50颗拔除的切牙和前磨牙，随机分为以下5组（每组n = 10）：1组，手工洁治后进行GPAP；2组，超声洁治后进行GPAP；3组，单纯手工洁治；4组，单纯超声洁治；5组，不进行处理。在初始洁治程序后，第1组和第2组的标本在37°C下孵育3天。然后对标本进行5秒的GPAP处理。所有标本均在轮廓仪下检查，并以微米为单位测量根面粗糙度。在扫描电子显微镜下对第1组（手工洁治加GPAP）和第2组（超声洁治加GPAP）的标本进行详细研究。不同方案产生的平均根面粗糙度值如下：第1组为2.31 µm；第2组为4.33 µm；第3组为5.84 µm；第4组为6.32 µm；第5组为9.20 µm。第1组和第2组之间的差异具有统计学意义（P < 0.05）。在这项体外研究中，用刮治器进行手工洁治比超声洁治产生的根面更光滑。在牙周维护治疗期间，将GPAP与手工洁治或超声洁治联合使用5秒可改善根面光滑度。
