Figures 2 and3 illustrate the Kaplan-Meier survival curves for the two types of retainers in the maxillary and mandibular arches.
More than 90% of the respondents recommended to inform the orthodontist in case of problems that can arise with all types of retainers.
Additionally, the findings of the study by Atack et al. [13] showed similar results between fixed and removable retainers and confirmed that a relapse in the lower front teeth can occur with both types of retainers.
The logrank test revealed no statistically significant difference between the two types of retainers in the maxillary (P = 0.084) or the mandibular arches (P = 0.314) in terms of survival function.
The second section examined if orthodontists used retention appliances after orthodontic treatment, which types of retainers were typically used for applied treatment, conditions or malocclusions (for patients with anterior open bite, impacted anterior teeth, etc)., and factors influencing their selection of the retainer type.
Certain special types of retainers, like so-called "bonded" retainers, attach behind the teeth, making them more or less invisible from the front.
It has also been well documented that PDL widens remarkably during the orthodontic treatment [37]; therefore, it seems logical that if a certain type of retainer is to provide physiologic tooth movement, after 6 months of follow-up, PDL should have regained its normal width.
In Dowling v Chicago Options Associates , Inc... the supreme court identified three types of lawyer retainer fees that are permissible in this state ... ...... and referred to the legal descriptions as "Dowling fee classifications".
Two types of fixed retainers were used in this study.
