Dental School, "Sapienza" University, Rome, Italy.
Dental School, "Sapienza" University, Rome, Italy.
Am J Orthod Dentofacial Orthop. 2018 Jun;153(6):852-860. doi: 10.1016/j.ajodo.2017.10.025.
Many studies on removable retainers have focused on retention efficacy and characteristics. However, studies on plaque accumulation, periodontal health, breakages, and patient compliance are still lacking. Thus, in this study, we aimed at evaluating these parameters in 2 groups of young patients wearing Essix or Hawley retainers for a 6-month period.
Seventy subjects were included. Periodontal health was investigated by measuring the plaque, gingival, calculus, and bleeding on probing indexes. Evaluations were performed at 1, 3, and 6 months of wearing. Accumulation of plaque on the retainers was also evaluated. Furthermore, compliance on wearing retainers and breakage data were collected by specific questionnaires.
Subjects wearing Essix retainers had significantly higher levels of plaque, gingival, and calculus indexes and increased percentages of bleeding sites, compared with subjects wearing Hawley retainers. The Essix group also had increased accumulations of plaque and calculus on the retainers. Nonetheless, subjects of the Essix group had better overall experiences, self-perceptions, and comfort compared with those of the Hawley group. Essix retainers had higher incidences of little and serious breakages compared with Hawley retainers.
Our results suggest that Essix retainers are well accepted by patients for their esthetic and oral comfort characteristics. However, Essix retainers may cause greater accumulations of plaque on both teeth and retainers, presumably because of inhibition of the cleaning effect of saliva caused by the thermoplastic material or the reduced opportunity for good hygiene on the retainer.
许多关于可摘保持器的研究都集中在保持效果和特点上。然而，关于菌斑积累、牙周健康、破损和患者依从性的研究仍然缺乏。因此，在这项研究中，我们旨在评估两组年轻患者在佩戴 Essix 或 Hawley 保持器 6 个月期间的这些参数。
共纳入 70 名受试者。通过测量菌斑、牙龈、牙石和探诊出血指数来评估牙周健康。在佩戴后的 1、3 和 6 个月进行评估。还评估了保持器上菌斑的积累情况。此外，通过专门的问卷收集了佩戴保持器的依从性和破损数据。
与佩戴 Hawley 保持器的受试者相比，佩戴 Essix 保持器的受试者菌斑、牙龈和牙石指数明显更高，探诊出血位点的百分比增加。Essix 组保持器上的菌斑和牙石也有更多的积累。然而，与 Hawley 组相比，Essix 组的受试者总体体验、自我认知和舒适度更好。与 Hawley 保持器相比，Essix 保持器的小破损和严重破损发生率更高。
我们的结果表明，Essix 保持器因其美观和口腔舒适的特点而被患者接受。然而，Essix 保持器可能会导致牙齿和保持器上更大量的菌斑积累，这可能是由于热塑性材料抑制了唾液的清洁效果，或者保持器上的良好卫生机会减少。
