Longitudinal measurements of tooth mobility following orthodontic treatment

Abstract

Objective:The aim of the present study was to evaluate the changes in tooth mobility following orthodontic treatment and to obtain information regarding the guideline of retainer wear duration during the post-treatment period. Methods: The sample consisted of twenty patients who had been treated with edgewise appliances. The mobility of the maxillary teeth from the central incisor to the first molar was measured bilaterally by way of the Periotest Ⓡ , a non-invasive, electronic device that provides an objective measurement of the reaction of the periodontium to a defined impact load. Tooth mobility was monitored at the time of the removal of the orthodontic appliances and subsequently at three-month intervals during the two years following appliance removal. Results: Tooth mobility decreased rapidly for the first six months and then decreased at a slower rate during the next six months; no statistically significant decrease in mobility was observed during the second year following appliance removal. Conclusions: The results of the present study suggest that adequate tooth stabilization is critical during the first six months following appliance removal and that continued wearing of retainers is recommended at least until twelve months after the completion of orthodontic treatment. (Korean J Orthod 2010;40(1):34-39)

Effect of Different Fixed Lingual Retainers on Tooth Mobility: Prospective Clinical Study

“…In the current study, tooth mobility decreased immediately after the LR was applied, and there was no signi cant difference in mobility among all the study groups 10 months later. The difference in the ndings may be due to the fact that Hwang et al [10] measured the mobility of the upper teeth and that no LR was applied.…”

“…Hwang et al [10] evaluated changes in tooth mobility at quarterly intervals for two years after orthodontic treatment using a Periotest® device and found that tooth mobility decreased rapidly in the rst six months and at a slower rate in the following six months. In the current study, tooth mobility decreased immediately after the LR was applied, and there was no signi cant difference in mobility among all the study groups 10 months later.…”

“…A signed informed consent form was obtained from each patient prior to starting the study. In the power analysis (G power program version 3.1.9.7), it was observed that the effect size calculated over the mobility averages among the groups was f = 0.42 and that the power of the study was 95% [10].…”

“…The measurements were taken by a periodontolog (OFA), who held the Periotest ® device at a right angle to the vestibule surface of the tooth to be measured. The tooth mobility was determined by taking three repeat measurements, as mentioned previously [10], from each tooth and calculating the average of these measurements. In this study, all the recorded mobility values were within physiological limit [11].…”

Common Etiologies of Generalized Tooth Mobility: A Review of Literature

“…Among them, 5 relevant studies based on their subject and publication date were chosen to be discussed in detail (Table 1). As shown, it is rational to consider a strong relationship between physiological or systemic conditions and generalized tooth mobility [6][7][8][9][10].…”