Exact(5)
The inter-molar diameter maintained 4.6 mm of the initial expansion (96%%) at 21 months post-retention (T3).
Schwartz et al. [38] examined the effects of eugenol and non-eugenol sealers on post-retention and found that the sealer type had no effect.
These findings were also confirmed by a long-term investigation [26], which reported 76 class II patients treated with Pendulum and fixed appliances describing that SN/Go-Gn angle increased 1.3° during the overall orthodontic treatment, but decreased 1.5° in the post-retention period (7 years later, age 22 years and 5 months).
This study was designed to elucidate the changes in the occlusal condition over a long period of time post-retention in Japanese patients who had undergone extraction treatment with the standard edgewise system (SES), a method of treatment in which the intercanine width and intermolar width are kept unchanged in pre- and post-treatment.
Between September 2011 and March 2012, a parallel-group, pre- and post-retention (6-month follow-up) controlled group intervention trial was conducted, with repeated measurements using validated questionnaires.
Similar(54)
The null hypothesis tested was that the adhesive protocol does not intervene on fiber post retention.
The top-end morphology of microrods can be changed by post retention at low temperature after hydrothermal growth.
Post retention was assessed in group 1. Ultrasonic vibration was applied to groups 2 and 3 until post removal.
In this study, this test was applied to compare the post retention of adhesive versus conventional cements.
In addition to the loss of post retention, de-bonding of the fiber post to root canal dentin increases the risk of post/core fracture [5].
The sharp-tip or polygonal shape with specific facets at the top end of ZnO microrods can be obtained by post retention at low temperature.
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