Effect of self-ligating bracket appliance on the periodontal tissues in patients with chronic periodontitis after orthodontic treatment

Objective:To explore the effect of self-ligating bracket appliance on the periodontal tissues in patients with chronic periodontitis after orthodontic treatment.Methods:A total of 56 patients with chronic periodontitis who were admitted in our hospital were included in the study and divided into the observation group and the control group according to different treatment protocols. The patients in the observation group were given self-ligating brackets, while the patients in the control group were given traditional brackets. The periodontal tissues and tooth motility (TM) before and after treatment in the two groups were observed and recorded. IL-1βand TNF-α levels in the gingival crervicular fluid (GCF) before and after treatment in the two groups were detected.Results:PD, CAL, SBI, and PLI after treatment in the two groups were significantly reduced, while GR was significantly elevated when compared with the control group. PD, CAL, SBI, and PLI after treatment in the observation group were significantly lower than those in the control group, while GR was significantly higher than that in the control group. TM after treatment in the two groups was significantly improved, among which the number of 0° TM was significantly increased, while the number ofⅠ°-Ⅲ°TM was significantly reduced. IL-1β and TNF-α levels in GCF after treatment in the two groups were significantly reduced when compared with before treatment. IL-1β and TNF-α levels in GCF after treatment in the observation group were significantly lower than those in the control group.Conclusions:The self-ligating brackets can effectively improve the periodontal tissues and TM in patients with chronic periodontitis, and reduce the levels of inflammatory cytokines in periodontal tissues, with an accurate efficacy.

External apical root resorption and the release of interleukin-6 in the gingival crevucular fluid induced by a self-ligating system

The aim of this study was to investigate the amount of external apical root resorption (EARR) and the release of interleukin (IL)-6 in the gingival crevicular fluid (GCF) in subjects treated with a low-force low-friction system. Sixty patients were assigned to two groups of thirty patients for each: one group received treatment with self-ligating brackets and the other with conventional ligated edgewise brackets. All patients were treated with extraction of the maxillary first premolars. The EARR of the maxillary central incisors was evaluated on the periapical radiographs and cephalograms, taken before and after orthodontic treatment. The GCF was also collected non-invasively from the mesial and distal sides of central incisors by using filter paper strips before and after orthodontic treatment. Enzyme-linked immunosorbent assay (ELISA) kits were used to determine the IL-6 levels in the GCF samples. A significant difference was found in the amount of EARR between the patients with self-ligating brackets and conventional brackets. The mean amount of EARR was significantly lower for self-ligating brackets than conventional brackets (p < 0.05). The GCF levels of IL-6 for the patients with self-ligating brackets appliance were significantly lower than for those with the conventional brackets (p < 0.05). These results show that the mean amount of EARR and the GCF levels of IL-6 were significantly lower in the patients treated using low-force low-friction appliances than conventional brackets. Therefore, self-ligating brackets may be a useful system for reducing inflammation and EARR.

SmartClip自锁矫治器排齐效果的研究

目的探讨使用SmartClip自锁矫治器与传统结扎式矫治器排齐拥挤上颌牙弓的效能是否有差异。方法选取48例牙列不齐指数>5mm、年龄12～15岁、采取拔除上颌第一前磨牙治疗的患者,按随机对照原则抽选使用SmartClip自锁矫治器或传统结扎式矫治器。结果使用SPSS15.0进行分析。结果排齐速度与初始不齐指数相关。矫治5周及10周时,自锁组前牙不齐指数及两侧拔牙间隙的减小、前段弓长的增加大于传统组,两组间有显著性差异(P<0.05)。自锁组排齐速度快于传统组。结论使用SmartClip自锁托槽可以缩短、中重度拥挤采取拔牙矫治患者牙弓的排齐时间。

Smartclip自锁托槽矫治技术在正畸治疗中的应用研究

目的:探讨Smartclip自锁托槽矫治技术在正畸治疗中的临床应用价值。方法:将100例双颌牙列轻中度拥挤的非拔牙正畸患者随机分为观察组和对照组各50例,观察组采用Smartclip自锁托槽矫治技术,对照组采用传统的MBT直丝弓矫治技术,比较两组疗效。结果:所有患者均达到Ⅰ类牙合关系,上下牙齿排列正常,无散在间隙及拥挤现象。观察组的椅旁操作时间、总体治疗时间及有效复诊次数均少于对照组,两组比较均有显著性差异(P<0.01)。结论:Smartclip自锁托槽矫治技术治疗双颌牙列轻中度拥挤疗效显著,且能明显缩短椅旁操作时间,并更有利于牙周组织的健康,值得临床推广。

SmartClip自锁托槽对正畸治疗患者菌斑控制的影响

目的探讨SmartClip自锁托槽与传统金属双翼托槽对患者菌斑控制的影响,为研究患者口腔卫生护理提供参考。方法将患者分为SmartClip自锁托槽组、金属双翼托槽组,并以未接受治疗的志愿者为对照组,分别于治疗前、治疗开始后1个月、治疗开始后3个月、治疗结束时4个时间点记录口腔卫生状况,记录右上中切牙(UR1)、左下中切牙(LL1)、右上第一磨牙(UR6)、左下第一磨牙(LL6)、左上尖牙(UL3)、右下尖牙(LR3)6个牙位的菌斑指数,比较各时间点菌斑指数差异。结果较治疗前,SmartClip自锁托槽组和传统固定矫治组中LL1、LR3、LL6、UR6的菌斑量在治疗第1个月、第3个月和治疗结束时增加,差异有统计学意义(P<0.05);治疗结束时与正畸治疗3个月后相比,PLI指数差异无统计学意义(P>0.05);对照组各时间段PLI指数差异无统计学意义(P>0.05);在矫治第3个月时,SmartClip自锁托槽矫治组LL1与LR3的菌斑量多于传统固定矫治组,差异有统计学意义(P<0.05)。结论下前牙区与后牙区是固定矫治较易引起菌斑积聚的区域,影响牙周健康,SmartClip自锁托槽较传统双翼托槽在牙周健康维护上不具备优势。

探讨3M^(TM) Smartclip^(TM)金属自锁托槽系统非拔牙矫治上颌牙列拥挤病例的牙弓变化特征

目的对3M^(TM) Smartclip^(TM)金属自锁托槽系统非拔牙矫治上颌牙列拥挤病例的牙弓变化特征进行研究。方法方便选取2013年4月—2017年3月期间该院收治的上颌牙列轻到中度拥挤的正畸患者110例,所有患者均使用3M^(TM) Smartclip^(TM)金属自锁托槽系统进行非拔牙矫治。对治疗前后的上颌牙弓宽度、牙弓长度等指标。结果治疗后牙弓长度(28.59±1.08)mm、周长(76.81±3.04)mm以及前磨牙间宽度(37.78±1.45)mm、第一磨牙间宽度(48.01±1.98)mm较之前的患者牙弓长度(26.00±1.42)mm、周长(72.60±3.20)mm以及前磨牙间宽度(34.66±1.69)mm、第一磨牙间宽度(46.33±1.71)mm均有明显的增加(P<0.05)。结论应用3m smartclip金属自锁托槽系统可明显增大上颌牙弓宽度、牙弓长度以及周长,进而扩大患者临床治疗上不拔牙矫治的范围。

自锁托槽矫治技术在成人正畸治疗中应用效果及对牙周状况和生活质量的影响

目的探讨自锁托槽矫治技术在成人正畸治疗中的应用价值以及对牙周状况、生活质量的影响。方法在2014年12月—2017年5月我院口腔科收治的接受正畸治疗的成人患者中选取265例,根据治疗方法分组:SmartClip组(使用3M SmartClip自锁托槽矫治,130例)和DQ组(使用Damon Q自锁托槽矫治,135例),收集2组患者的牙周状况、生活质量评分指标等。结果矫治1个月、3个月、6个月后,2组患者的牙周指标PD、CAL、BI、SBI均有明显降低,GR指数明显提高(P<0.01),而组间矫治前后对比差异不明显(P>0.05);矫治6个月后,2组生活质量评分均有明显降低(P<0.05),但组间差异不明显(P>0.05)。结论 3M SmartClip和Damon Q两种自锁托槽在成人正畸治疗中应用效果相当,且均能显著改善患者的牙周健康状况,提高生活质量,值得推广。